SparkFun OpenLog solderpad
sparkfun-openlog / OpenLog_v2 / OpenLog_v2.pde
/*
12-3-09
Nathan Seidle
SparkFun Electronics© 2010
spark at sparkfun.com
OpenLog hardware and firmware are released under the Creative Commons Share Alike v3.0 license.
http://creativecommons.org/licenses/by-sa/3.0/
Feel free to use, distribute, and sell varients of OpenLog. All we ask is that you include attribution of 'Based on OpenLog by SparkFun'.
OpenLog is based on the work of Bill Greiman and sdfatlib:
http://code.google.com/p/sdfatlib/
OpenLog is a simple serial logger based on the ATmega328 running at 16MHz. The ATmega328
should be able to talk to high capacity (larger than 2GB) SD cards. The whole purpose of this
logger was to create a logger that just powered up and worked. OpenLog ships with standard
57600bps serial bootloader running at 16MHz so you can load new firmware with a simple serial
connection. This makes it compatible with Arduino if needed.
OpenLog automatically works with 512MB, 1GB, 2GB, 4GB, 8GB, and 16GB microSD cards. We recommend FAT16 for 2GB and smaller cards. We
recommend FAT32 for 4GB and larger cards.
OpenLog runs at 9600bps by default. This is configurable to 2400, 4800, 9600, 19200, 57600, and 115200bps. You can alter all settings
including baud rate and escape characters by editing config.txt found on OpenLog.
Type '?' to get a list of supported commands.
During power up, you will see '12<'. '1' indicates the serial connection is established. '2' indicates
the SD card has been successfully initialized. '<' indicates OpenLog is ready to receive serial characters.
Recording constant 115200bps datastreams are supported. Throw it everything you've got! To acheive this maximum record rate, please use the
SD card formatter from : http://www.sdcard.org/consumers/formatter/. The fewer files on the card, the faster OpenLog is able to begin logging.
200 files is ok. 2GB worth of music and pictures is not.
To a lower dir, use 'cd ..' instead of 'cd..'.
Only standard 8.3 file names are supported. "12345678.123" is acceptable. "123456789.123" is not.
All file names are pushed to upper case. "NewLog.txt" will become "NEWLOG.TXT".
Type 'set' to enter baud rate configuration menu. Select the baud rate and press enter. You will then
see a message 'Going to 9600bps...' or some such message. You will need to power down OpenLog, change
your system UART settings to match the new OpenLog baud rate and then power OpenLog back up.
If you get OpenLog stuck into an unknown baudrate, there is a safety mechanism built-in. Tie the RX pin
to ground and power up OpenLog. You should see the LEDs blink back and forth for 2 seconds, then blink
in unison. Now power down OpenLog and remove the RX/GND jumper. OpenLog is now reset to 9600bps.
Please note: The preloaded STK500 serial bootloader is 2k, and begins at 0x7800 (30,720). If the code is
larger than 30,719 bytes, you will get verification errors during serial bootloading.
STAT1 LED is sitting on PD5 (Arduino D5) - toggles when character is received
STAT2 LED is sitting on PB5 (Arduino D13) - toggles when SPI writes happen
LED Flashing errors @ 2Hz:
No SD card - 3 blinks
Baud rate change (requires power cycle) - 4 blinks
OpenLog regularly shuts down to conserve power. If after 1.5 seconds no characters are received, OpenLog will record any unsaved characters
and go to sleep. OpenLog will automatically wake up and continue logging the instand a new character is received. If power is lost during normal
operation, OpenLog should lose a maximum of the RX_BUFF / 2. This is currently a max of 350 characters. It's actually quite hard to get into this scenario
and is rare with normal operation.
8mA idle
18mA actively writing
Input voltage on VCC can be 3.3 to 12V. Input voltage on RX-I pin must not exceed 6V. Output voltage on
TX-O pin will not be greater than 3.3V. This may cause problems with some systems - for example if your
attached microcontroller requires 4V minimum for serial communication (this is rare).
OpenLog has progressed significantly over the past year. Please see Changes.txt or GitHub for a full change log.
v2.21 ringp fork brought in. Wildcard remove and list commands now work. Remove directory now works! Change directory up/down the tree works again.
28440 bytes used of 30720.
ringp brought back many great commands! Thanks ringp!
rm LOG*.* works
ls *.TXT works
cd .. works again
ls now correctly shows directories first and files following the directories.
To remove a directory, you have to navigate into that directory. For example:
>cd TEMP (you are now in TEMP directory)
>rm -f TEMP (you are now removing TEMP, and you will be pushed back down one level of the tree)
>ls (shows files and directories where TEMP directory used to be, but TEMP directory should be gone)
ringp added new commands:
efcount: gives the number of files in the current directory. Example: "efcount" returns "count|3". There are 3 files in the current directory.
efinfo <spot>: gives info about the file in <spot>. Example: "efinfo 2" reports "LOG00588.TXT|45". File number 2 is named LOG00588.TXT and is 45 bytes in size.
verbose <"on"|"off">: sets whether command errors are verbose (long winded) or just the "!" character. Example: "verbose off" sets verbose off. Then if a
command like "blah" is received, then only "!>" is seen from the command line interface. This makes it easier for embedded systems to recognize there
was an error. This setting is not recorded to EEPROM.
v2.3 Migrated to v10.10.10 of sdfatlib. Moved to inline RX interrupt and buffer. Improved the ability to receive a constant stream at 57600bps.
27334 bytes out of 30720.
Remember - we had to completely butcher HardwareSerial.cpp so a normal Arduino installation will not work.
C:\arduino-xxxx\hardware\arduino\cores\arduino\HardwareSerial.cpp
I removed the receive interupt handler from HardwareSerial.cpp so that we can deal directly with USART_RX_vect in the main code. This allows
us to return to the way OpenLog used to operate - by having one buffer split in half. Once one half fills, it is recorded to SD while the other
half fills up. This dramatically decreases the time spent in function calls and SD recording, which leads to many fewer characters dropped.
The change log at the top of the main code got so large I've moved it to a version controlled "Changes.txt" file.
By making all these changes, I have broken many things. Ringp - I could use your help here. I apologize for stomping on so much of your work. I was not
good enough to figure out how to re-link from the old function calls to the new sdfatlib setup.
Backspace is broken - ringp, I saw this fix in one of your commits, but looking at the code, I don't see how it is supposed to work. Either way, we still
get 0x08 when trying to backspace.
New sdfatlib doesn't have SdFat.cpp so fileInfo doesn't work. These function calls are marked with //Error
I have chosen to dis-allow deprecated functions:
#define ALLOW_DEPRECATED_FUNCTIONS 0
This forced some trivial changes to the SD write and new file creation function calls. I believe we've successfully migrated to the new version of sdfatlib.
In the command_shell / read_line function : It may be better to pull directly from the UART buffer and use the RX interrupt. For now, we brute force it.
Because of all these changes, I need to re-test power consumption. For now, I'm confident it's low enough.
Testing with 512 buffer array size
1GB @ 57600 - dropped very little out of 3 tests
1GB @ 115200 - dropped very little out of 2 tests
8GB @ 57600 - Formatted using the sd formater (32k byte allocation size). Dropped nothing.
8GB @ 115200 - dropped very little, dropped none
16GB w/ Lots of files @ 57600 - Drops the first part of the file because of start up delay?
16GB w/ Lots of files @ 115200
1024 array size (and 800) does not run
Testing with 700 buffer array size
1GB @ 57600 - 110300 out of 111000 bytes, 110300/111000,
1GB @ 115200 - 111000/111000!, 109600/111000
8GB @ 57600 - 109000/111000, 111000/111000!,
8GB @ 115200 - 111000/111000!, 111000/111000!,
16GB w/ Lots of files @ 57600 - 85120/111000, 85120/111000
16GB w/ Lots of files @ 115200 - 56420 (but once it got going, log looks good). 56420.
I am seeing long delays on cards with lots of files. In the above tests, the 16GB test card is a good example. It has 2GB worth of random files in a sub directory.
After OpenLog boots, goes to '12<'. After I send ~500 characters OpenLog freezes for a couple seconds, then returns to normal, very fast, operation. During
that down time, I believe sdfatlib is searching for an open cluster. The odd thing is that after the cluster is established (after the initial down time) OpenLog
performs excellently. I am hoping to create a faux file or pre-write and save to the file or some how get this allocation done before we report the
'12<' indicating we are ready. That way, if a card does fill up, as long as the host system is checking for '<', it doesn't matter how long it takes
sdfatlib to find the next free cluster.
You can see that we drop 700 bytes at a time. That's a bit odd - I'd expect to drop half or 350 at a time.
What happens if we shrink the array size to say 256? To be expected, this is bad - way more instances of dropped characters.
Added blink for each test to the OpenLog_Test sketch so we can see as the test progresses.
http://www.sdcard.org/consumers/formatter/ is the site for SD card formatting. It looks like this program takes a guess at the correct block size. This could
help a lot in the future.
v2.4 Merged ringp updates. Commands cd, rm, ls work again! New "rm -rf" command to remove directory and its files.
29028 bytes of 30720 (yikes).
Thanks ringp! Great work.
Remember - we had to completely butcher HardwareSerial.cpp so a normal Arduino installation will not work.
C:\arduino-xxxx\hardware\arduino\cores\arduino\HardwareSerial.cpp
I've added the modified HardwareSerial.cpp to the
Testing at 57600
1GB: 110490/111000, 110490/111000
8GB: 111000/111000, 111000/111000, 111000/111000
16GB: 83890/111000, 84908/111000
The 16GB card with tons of files continue to have problems but the other cards (FAT and FAT32) are acceptable. Whenever possible, use a clean,
empty, freshly formatted card.
"rm -rf mydirectory" to remove a directory and all its files
Windows 7 stores the Arduino hex file is an aweful place. Something like:
C:\Users\Main\AppData\Local\Temp\build3390340147786739225.tmp\OpenLog_v2.cpp.hex
Added HardwareSerial.cpp and a readme to the main trunk.
Added OpenLog_v2.cpp.hex to the main trunk.
v2.41 Power loss bug fixed. Adding support for 38400bps for testing with SparkFum 9DOF IMU logging.
29124 bytes of 30720 (yikes)
Found a bug in the append_file routine. If the unit is actively logging, file.writes are flying by quickly. But if OpenLog loses power, none of
the data is recorded because there is no file.sync. Data would only get recorded if the unit went idle or if user entered escape command. This
has since been fixed with two file.sync() commands.
v2.5 Improved 'read' command. Added 'reset' command.
28782 bytes of 30720 (yikes)
Modified the read command so that we can print extended ASCII characters. The function was also failing to print any value over 127
(limited to signed 8 bits - boo). Thank you wilafau! You proposed excellent, easy fixes.
Added raw command during print operation. This allows for non-visible and extended ASCII characters to be printed correctly, if need be.
Issuing 'reset' command causes OpenLog to reset and re-read the config file. This is important if you want to change the config file then restart.
Removed some of the extraneous prints from the help menu to save on space.
v2.51 Improved command prompt parsing (now ignores '\n')
We now ignore the \n character when parsing characters from the command prompt. This makes it easier to create code on a microcontroller that
correctly controls OpenLog. Previously, println or sprintf commands were adding a \n to the end of the string that would confuse OpenLog. One
way around this if you have previous versions is this
sprintf(buff, "new blah.txt\r");
Serial.print(buff); //No println, use \r in string instead
Also - added a CommandTest sketch to demonstrate how you can control OpenLog from a microcontroller / automate the command prompt
*/
#include "SdFat.h"
#include "SdFatUtil.h" // use functions to print strings from flash memory
#include <EEPROM.h>
#include <avr/pgmspace.h> //Needed for strcmp_P - string compare in program space
#include <ctype.h> //Needed for isdigit
#include <avr/sleep.h> //Needed for sleep_mode
#include <avr/power.h> //Needed for powering down perihperals such as the ADC/TWI and Timers
//#include <avr/wdt.h> //Needed for the reset command - uses watch dog timer to reset IC
//Debug turns on (1) or off (0) a bunch of verbose debug statements. Normally use (0)
//#define DEBUG 1
#define DEBUG 0
//Boot time testing is used to see how long it takes to go from power on to ready to receive characters
//The problem with this is that millis() is not running while the bootloader is timing out...
//Current testing shows that time to boot is around 74ms from a hardware reset and 217ms from a power cycle
//#define BOOTTIME_TESTING 1
#define BOOTTIME_TESTING 0
//The bigger the receive buffer, the less likely we are to drop characters at high speed. However, the ATmega has a limited amount of
//RAM. This debug mode allows us to view available RAM at various stages of the program
//#define RAM_TESTING 1 //On
#define RAM_TESTING 0 //Off
#define sbi(port, port_pin) ((port) |= (uint8_t)(1 << port_pin))
#define cbi(port, port_pin) ((port) &= (uint8_t)~(1 << port_pin))
//#define RX_BUFF_SIZE 1024 //This larger buffer size does work but may not work in full OpenLog bells and whistles
//#define RX_BUFF_SIZE 800 //Bad
//#define RX_BUFF_SIZE 700 //Works
#define RX_BUFF_SIZE 512
//#define RX_BUFF_SIZE 256 //Drops lots
char rxBuffer[RX_BUFF_SIZE];
int rxSpot;
//#define Reset_AVR() wdt_enable(WDTO_1S); while(1) {} //Correct way of resetting the ATmega, but doesn't work with Arduino pre-Optiboot bootloader
void(* Reset_AVR) (void) = 0; //Dirty way of resetting the ATmega, but it works for now
//The very important receive interrupt handler
SIGNAL(USART_RX_vect)
{
rxBuffer[rxSpot++] = UDR0;
if(rxSpot == RX_BUFF_SIZE) rxSpot = 0;
}
char general_buffer[30];
// The folder track depth is used by "cd .." and "pwd"
// This looks like an ugly hack but the sdfatlib is not
// supporting going back to previous folder yet.
// The current handling of "cd .." should be removed when
// it's available in the sdfat library.
#define FOLDER_TRACK_DEPTH 15
char folderTree[FOLDER_TRACK_DEPTH][12];
#define CFG_FILENAME "config.txt"
//EEPROM locations for the various user settings
#define LOCATION_BAUD_SETTING 0x01
#define LOCATION_SYSTEM_SETTING 0x02
#define LOCATION_FILE_NUMBER_LSB 0x03
#define LOCATION_FILE_NUMBER_MSB 0x04
#define LOCATION_ESCAPE_CHAR 0x05
#define LOCATION_MAX_ESCAPE_CHAR 0x06
#define BAUD_2400 0
#define BAUD_9600 1
#define BAUD_57600 2
#define BAUD_115200 3
#define BAUD_4800 4
#define BAUD_19200 5
#define BAUD_38400 6
#define MODE_NEWLOG 0
#define MODE_SEQLOG 1
#define MODE_COMMAND 2
// The number of command line arguments
// Increase to support more arguments but be aware of the
// memory restrictions
// command <arg1> <arg2> <arg3> <arg4> <arg5>
#define MAX_COUNT_COMMAND_LINE_ARGS 5
#define FALSE -1
#define TRUE 0
//STAT1 is a general LED and indicates serial traffic
#define STAT1 5 //On PORTD
#define STAT1_PORT PORTD
#define STAT2 5 //On PORTB
#define STAT2_PORT PORTB
int statled1 = 5; //This is the normal status LED
int statled2 = 13; //This is the SPI LED, indicating SD traffic
//Blinking LED error codes
#define ERROR_SD_INIT 3
#define ERROR_NEW_BAUD 5
#if !DEBUG
// Using OpenLog in an embedded environment
// only if not in debug mode. The reason for this
// is that we are out of space if the simple embedded is
// included
#define INCLUDE_SIMPLE_EMBEDDED
#endif
#define ECHO 0x01
#define EXTENDED_INFO 0x02
#ifdef INCLUDE_SIMPLE_EMBEDDED
#define EMBEDDED_END_MARKER 0x08
#endif
Sd2Card card;
SdVolume volume;
SdFile currentDirectory;
SdFile file;
byte setting_uart_speed; //This is the baud rate that the system runs at, default is 9600
byte setting_system_mode; //This is the mode the system runs in, default is MODE_NEWLOG
byte setting_escape_character; //This is the ASCII character we look for to break logging, default is ctrl+z
byte setting_max_escape_character; //Number of escape chars before break logging, default is 3
#if BOOTTIME_TESTING
unsigned long boottime; //Used to keep track of how long it takes to boot
#endif
//Used for wild card delete and search
struct command_arg
{
char* arg; //Points to first character in command line argument
uint8_t arg_length; // Length of command line argument
};
static struct command_arg cmd_arg[MAX_COUNT_COMMAND_LINE_ARGS];
uint8_t feedback_mode = (ECHO | EXTENDED_INFO);
#define MIN(a,b) ((a)<(b))?(a):(b)
// store error strings in flash to save RAM
#define error(s) error_P(PSTR(s))
void error_P(const char *str)
{
PgmPrint("error: ");
SerialPrintln_P(str);
if (card.errorCode()) {
PgmPrint("SD error: ");
Serial.print(card.errorCode(), HEX);
Serial.print(',');
Serial.println(card.errorData(), HEX);
}
while(1);
}
void setup(void)
{
pinMode(statled1, OUTPUT);
//Power down various bits of hardware to lower power usage
set_sleep_mode(SLEEP_MODE_IDLE);
sleep_enable();
//Shut off TWI, Timer2, Timer1, ADC
power_twi_disable();
power_timer1_disable();
power_timer2_disable();
power_adc_disable();
check_emergency_reset(); //Look to see if the RX pin is being pulled low
read_system_settings(); //Load all system settings from EEPROM
//Setup UART
if(setting_uart_speed == BAUD_2400) Serial.begin(2400);
if(setting_uart_speed == BAUD_4800) Serial.begin(4800);
if(setting_uart_speed == BAUD_9600) Serial.begin(9600);
if(setting_uart_speed == BAUD_19200) Serial.begin(19200);
if(setting_uart_speed == BAUD_38400) Serial.begin(38400);
if(setting_uart_speed == BAUD_57600) Serial.begin(57600);
if(setting_uart_speed == BAUD_115200) Serial.begin(115200);
Serial.print("1");
#if RAM_TESTING
PgmPrint("Free RAM start: ");
Serial.println(FreeRam());
#endif
//Setup SD & FAT
if (!card.init(SPI_FULL_SPEED)) {
PgmPrint("error card.init");
blink_error(ERROR_SD_INIT);
} // initialize the SD card
if (!volume.init(&card)) {
PgmPrint("error volume.init");
blink_error(ERROR_SD_INIT);
} // initialize a FAT volume
if (!currentDirectory.openRoot(&volume)) {
PgmPrint("error openRoot");
blink_error(ERROR_SD_INIT);
} // open the root directory
Serial.print("2");
#if RAM_TESTING
PgmPrint("Free RAM post SD init: ");
Serial.println(FreeRam());
#endif
//Search for a config file and load any settings found. This will over-ride previous EEPROM settings if found.
read_config_file();
memset(folderTree, 0, sizeof(folderTree));
}
void loop(void)
{
//If we are in new log mode, find a new file name to write to
if(setting_system_mode == MODE_NEWLOG)
newlog();
//If we are in sequential log mode, determine if seqlog.txt has been created or not, and then open it for logging
if(setting_system_mode == MODE_SEQLOG)
seqlog();
//Once either one of these modes exits, go to normal command mode, which is called by returning to main()
command_shell();
while(1); //We should never get this far
}
int8_t getNextFolderTreeIndex()
{
int8_t i;
for (i = 0; i < FOLDER_TRACK_DEPTH; i++)
if (strlen(folderTree[i]) == 0)
return i;
if (i >= FOLDER_TRACK_DEPTH)
i = -1;
return i;
}
//Log to a new file everytime the system boots
//Checks the spots in EEPROM for the next available LOG# file name
//Updates EEPROM and then appends to the new log file.
//Limited to 65535 files but this should not always be the case.
void newlog(void)
{
uint8_t msb, lsb;
uint16_t new_file_number;
//Combine two 8-bit EEPROM spots into one 16-bit number
lsb = EEPROM.read(LOCATION_FILE_NUMBER_LSB);
msb = EEPROM.read(LOCATION_FILE_NUMBER_MSB);
new_file_number = msb;
new_file_number = new_file_number << 8;
new_file_number |= lsb;
//If both EEPROM spots are 255 (0xFF), that means they are un-initialized (first time OpenLog has been turned on)
//Let's init them both to 0
if((lsb == 255) && (msb == 255))
{
new_file_number = 0; //By default, unit will start at file number zero
EEPROM.write(LOCATION_FILE_NUMBER_LSB, 0x00);
EEPROM.write(LOCATION_FILE_NUMBER_MSB, 0x00);
}
//The above code looks like it will forever loop if we ever create 65535 logs
//Let's quit if we ever get to 65534
//65534 logs is quite possible if you have a system with lots of power on/off cycles
if(new_file_number == 65534)
{
//Gracefully drop out to command prompt with some error
PgmPrint("!Too many logs:1!");
return; //Bail!
}
//If we made it this far, everything looks good - let's start testing to see if our file number is the next available
//Search for next available log spot
char new_file_name[] = "LOG00000.TXT";
while(1)
{
new_file_number++;
if(new_file_number > 65533) //There is a max of 65534 logs
{
PgmPrint("!Too many logs:2!");
return;
}
sprintf(new_file_name, "LOG%05d.TXT", new_file_number); //Splice the new file number into this file name
//Try to open file, if fail (file doesn't exist), then break
if (file.open(¤tDirectory, new_file_name, O_CREAT | O_EXCL | O_WRITE)) break;
}
file.close(); //Close this new file we just opened
//file.writeError = false; // clear any write errors
//Record new_file number to EEPROM
lsb = (uint8_t)(new_file_number & 0x00FF);
msb = (uint8_t)((new_file_number & 0xFF00) >> 8);
EEPROM.write(LOCATION_FILE_NUMBER_LSB, lsb); // LSB
if (EEPROM.read(LOCATION_FILE_NUMBER_MSB) != msb)
EEPROM.write(LOCATION_FILE_NUMBER_MSB, msb); // MSB
#if DEBUG
PgmPrint("\nCreated new file: ");
Serial.println(new_file_name);
#endif
//Begin writing to file
append_file(new_file_name);
}
//Log to the same file every time the system boots, sequentially
//Checks to see if the file SEQLOG.txt is available
//If not, create it
//If yes, append to it
//Return 0 on error
//Return anything else on sucess
void seqlog(void)
{
char seq_file_name[13] = "SEQLOG00.TXT";
//Try to create sequential file
if (!file.open(¤tDirectory, seq_file_name, O_CREAT | O_WRITE))
{
PgmPrint("Error creating SEQLOG\n");
return;
}
file.close(); //Close this new file we just opened
append_file(seq_file_name);
}
//Appends a stream of serial data to a given file
//Assumes the currentDirectory variable has been set before entering the routine
//We use the RX interrupt and a circular buffer of 1024 bytes so that we can capture a full stream of
//data even at 115200bps
//Does not exit until Ctrl+z (ASCII 26) is received
//Returns 0 on error
//Returns 1 on success
uint8_t append_file(char* file_name)
{
int checkedSpot;
char escape_chars_received = 0;
// O_CREAT - create the file if it does not exist
// O_APPEND - seek to the end of the file prior to each write
// O_WRITE - open for write
if (!file.open(¤tDirectory, file_name, O_CREAT | O_APPEND | O_WRITE)) {
if ((feedback_mode & EXTENDED_INFO) > 0)
error("open1");
}
#if DEBUG
PgmPrintln("File open");
PgmPrintln("Recording");
#endif
#ifdef INCLUDE_SIMPLE_EMBEDDED
if ((feedback_mode & EMBEDDED_END_MARKER) > 0)
Serial.print((char)0x1A); // Ctrl+Z ends the data and marks the start of result
#endif
Serial.print('<'); //give a different prompt to indicate no echoing
digitalWrite(statled1, HIGH); //Turn on indicator LED
//Clear out the serial buffer
rxSpot = 0;
checkedSpot = 0;
//Start UART buffered interrupts
UCSR0B |= (1<<RXCIE0); //Enable receive interrupts
sei(); //Enable interrupts
//Start recording incoming characters
//HardwareSerial.cpp has a buffer tied to the interrupt. We increased this buffer to 512 bytes
//As characters come in, we read them in and record them to FAT.
while(1){
uint16_t timeout_counter = 0;
#if BOOTTIME_TESTING
boottime = millis(); //Get the time from power on to ready to receive
PgmPrint("Time until ready to recieve (ms): ");
Serial.println(boottime);
#endif
#if RAM_TESTING
PgmPrint("Free RAM receive ready: ");
Serial.println(FreeRam());
#endif
//Testing to try to get rid of long delay after the first synch
//This forces OpenLog to scan the fat table and get the pointers ready before the wave of data starts coming in
//currentDirectory.sync();
//file.write("123", 3);
//file.sync();
//file.close();
//if (!file.open(currentDirectory, file_name, O_CREAT | O_APPEND | O_WRITE)) error("open1");
while(checkedSpot == rxSpot){ //Wait for characters to come in
if(timeout_counter++ > 1200){ //If we haven't seen a character for about 3 seconds, then record the buffer, sync the SD, and shutdown
timeout_counter = 0;
if(checkedSpot != 0 && checkedSpot != (RX_BUFF_SIZE/2)) //There is stuff in buffer to record before we go to sleep
{
if(checkedSpot < (RX_BUFF_SIZE/2)) {
file.write(rxBuffer, checkedSpot); //Record first half the buffer
}
else { //checked_spot > (BUFF_LEN/2)
file.write(rxBuffer + (RX_BUFF_SIZE/2), checkedSpot - (RX_BUFF_SIZE/2)); //Record second half the buffer
}
// rxSpot may have moved while we , copy
unsigned spot = checkedSpot > RX_BUFF_SIZE/2 ? RX_BUFF_SIZE/2 : 0;
unsigned sp = spot; // start of new buffer
cli();
while(checkedSpot != rxSpot)
{
rxBuffer[spot++] = rxBuffer[checkedSpot++]; //Error - We are not checking for escape characters in here
if( checkedSpot >= RX_BUFF_SIZE )
checkedSpot = 0;
}
rxSpot = spot; // set insertion to end of copy
checkedSpot = sp; // reset checked to beginning of copy
sei();
file.sync(); //Push these new file.writes to the SD card
}
//Now power down until new characters to arrive
while(checkedSpot == rxSpot){
digitalWrite(STAT1, LOW); //Turn off stat LED to save power
sleep_mode(); //Stop everything and go to sleep. Wake up if serial character received
}
}
delay(1); //Hang out for a ms
}
//Scan for escape character
if(rxBuffer[checkedSpot] == setting_escape_character){
#if DEBUG
Serial.print("!");
#endif
if(++escape_chars_received == setting_max_escape_character){
//Disable interrupt and we're done!
cli();
UCSR0B &= ~(1<<RXCIE0); //Clear receive interrupt enable
break;
}
}
else
escape_chars_received = 0;
checkedSpot++;
if(checkedSpot == (RX_BUFF_SIZE/2)) { //We've finished checking the first half the buffer
file.write(rxBuffer, RX_BUFF_SIZE/2); //Record first half the buffer
file.sync(); //Push these new file.writes to the SD card
}
if(checkedSpot == RX_BUFF_SIZE){ //We've finished checking the second half the buffer
checkedSpot = 0;
file.write(rxBuffer + (RX_BUFF_SIZE/2), RX_BUFF_SIZE/2); //Record second half the buffer
file.sync(); //Push these new file.writes to the SD card
}
STAT1_PORT ^= (1<<STAT1); //Toggle the STAT1 LED each time we receive a character
} //End while - escape character received or error
//Upon receiving the escape character, we may still have stuff left in the buffer, record the last of the buffer to memory
if(checkedSpot == 0 || checkedSpot == (RX_BUFF_SIZE/2))
{
//Do nothing, we already recorded the buffers right before catching the escape character
}
else if(checkedSpot < (RX_BUFF_SIZE/2))
{
file.write(rxBuffer, checkedSpot); //Record first half the buffer
}
else //checkedSpot > (RX_BUFF_SIZE/2)
{
file.write(rxBuffer + (RX_BUFF_SIZE/2), checkedSpot - (RX_BUFF_SIZE/2)); //Record second half the buffer
}
file.sync();
file.close(); //Done recording, close out the file
digitalWrite(statled1, LOW); //Turn off indicator LED
#if DEBUG
PgmPrintln("Done!");
#endif
PgmPrint("~"); //Indicate a successful record
return(1); //Success!
}
uint8_t gotoDir(char *dir)
{
SdFile subDirectory;
uint8_t tmp_var = 0;
//Goto parent directory
//@NOTE: This is a fix to make this work. Should be replaced with
//proper handling. Limitation: FOLDER_TRACK_DEPTH subfolders
if (strncmp_P(dir, PSTR(".."), 2) == 0) {
tmp_var = 1;
//close file system
currentDirectory.close();
// open the root directory
if (!currentDirectory.openRoot(&volume)) error("openRoot");
int8_t index = getNextFolderTreeIndex() - 1;
if (index >= 0)
{
for (int8_t iTemp = 0; iTemp < index; iTemp++)
{
if (!(tmp_var = subDirectory.open(¤tDirectory, folderTree[iTemp], O_READ)))
break;
currentDirectory = subDirectory; //Point to new directory
subDirectory.close();
}
memset(folderTree[index], 0, 11);
}
if (((feedback_mode & EXTENDED_INFO) > 0) && (tmp_var == 0))
{
PgmPrint("cannot cd to parent directory: ");
Serial.println(dir);
}
}
else
{
if (!(tmp_var = subDirectory.open(¤tDirectory, dir, O_READ))) {
if ((feedback_mode & EXTENDED_INFO) > 0)
{
PgmPrint("directory not found: ");
Serial.println(dir);
}
}
else
{
currentDirectory = subDirectory; //Point to new directory
int8_t index = getNextFolderTreeIndex();
if (index >= 0)
strncpy(folderTree[index], dir, 11);
}
}
return tmp_var;
}
void command_shell(void)
{
//Serial.begin causes the receive interrupt to turn on
//This is bad for command_shell that relies on non-interrupt driven line reads
cli();
UCSR0B &= ~(1<<RXCIE0); //Clear receive interrupt enable
//provide a simple shell
char buffer[30];
uint8_t tmp_var;
#ifdef INCLUDE_SIMPLE_EMBEDDED
uint32_t file_index;
uint8_t command_succedded = 1;
#endif //INCLUDE_SIMPLE_EMBEDDED
while(true)
{
#ifdef INCLUDE_SIMPLE_EMBEDDED
if ((feedback_mode & EMBEDDED_END_MARKER) > 0)
Serial.print((char)0x1A); // Ctrl+Z ends the data and marks the start of result
if (command_succedded == 0)
Serial.print('!');
#endif
Serial.print('>');
//read command
char* command = buffer;
if(read_line(command, sizeof(buffer)) < 1)
{
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
continue;
}
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 0;
#endif
//Argument 1: The actual command
char* command_arg = get_cmd_arg(0);
//execute command
if(strcmp_P(command_arg, PSTR("init")) == 0)
{
if ((feedback_mode & EXTENDED_INFO) > 0)
PgmPrintln("Closing down file system");
//close file system
currentDirectory.close();
// open the root directory
if (!currentDirectory.openRoot(&volume)) error("openRoot");
memset(folderTree, 0, sizeof(folderTree));
if ((feedback_mode & EXTENDED_INFO) > 0)
PgmPrintln("File system initialized");
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
}
else if(strcmp_P(command_arg, PSTR("?")) == 0)
{
//Print available commands
print_menu();
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
}
else if(strcmp_P(command_arg, PSTR("help")) == 0)
{
//Print available commands
print_menu();
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
}
else if(strcmp_P(command_arg, PSTR("baud")) == 0)
{
//Go into baud select menu
baud_menu();
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
}
else if(strcmp_P(command_arg, PSTR("set")) == 0)
{
//Go into system setting menu
system_menu();
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
}
#if DEBUG
else if(strcmp_P(command_arg, PSTR("create")) == 0)
{
//Test for creating the maximum number of files that a directory can hold
//create_lots_of_files();
}
#endif
else if(strcmp_P(command_arg, PSTR("ls")) == 0)
{
if ((feedback_mode & EXTENDED_INFO) > 0)
{
PgmPrint("Volume is FAT");
Serial.println(volume.fatType(), DEC);
}
currentDirectory.ls(LS_SIZE, 0, &wildcmp, get_cmd_arg(1));
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
}
else if(strncmp_P(command_arg, PSTR("md"), 2) == 0)
{
//Argument 2: Directory name
command_arg = get_cmd_arg(1);
if(command_arg == 0)
continue;
SdFile newDirectory;
if (!newDirectory.makeDir(¤tDirectory, command_arg)) {
if ((feedback_mode & EXTENDED_INFO) > 0)
{
PgmPrintln("error creating directory: ");
Serial.println(command_arg);
}
}
#ifdef INCLUDE_SIMPLE_EMBEDDED
else
{
command_succedded = 1;
}
#endif
}
//NOTE on using "rm <option>/<file> <subfolder>"
// "rm -rf <subfolder>" removes the <subfolder> and all contents recursively
// "rm <subfolder>" removes the <subfolder> only if its empty
// "rm <filename>" removes the <filename>
else if(strncmp_P(command_arg, PSTR("rm"), 2) == 0)
{
//Argument 2: Remove option or file name/subdirectory to remove
command_arg = get_cmd_arg(1);
if(command_arg == 0)
continue;
//Argument 2: Remove subfolder recursively?
if ((count_cmd_args() == 3) && (strncmp_P(command_arg, PSTR("-rf"), 3) == 0))
{
//Remove the subfolder
if (file.open(¤tDirectory, get_cmd_arg(2), O_READ))
{
tmp_var = file.rmRfStar();
file.close();
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = tmp_var;
#endif
}
continue;
}
//Argument 2: Remove subfolder if empty or remove file
if (file.open(¤tDirectory, command_arg, O_READ))
{
tmp_var = 0;
if (file.isDir() || file.isSubDir())
tmp_var = file.rmDir();
else
{
file.close();
if (file.open(¤tDirectory, command_arg, O_WRITE))
tmp_var = file.remove();
}
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = tmp_var;
#endif
file.close();
continue;
}
//Argument 2: File wildcard removal
uint32_t filesDeleted = currentDirectory.remove(&wildcmp, get_cmd_arg(1), &removeErrorCallback);
if ((feedback_mode & EXTENDED_INFO) > 0)
{
Serial.print(filesDeleted);
Serial.println(" file(s) deleted");
}
#ifdef INCLUDE_SIMPLE_EMBEDDED
if (filesDeleted > 0)
command_succedded = 1;
#endif
}
else if(strncmp_P(command_arg, PSTR("cd"), 2) == 0)
{
//Argument 2: Directory name
command_arg = get_cmd_arg(1);
if(command_arg == 0)
continue;
//open directory
tmp_var = gotoDir(command_arg);
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = tmp_var;
#endif
}
else if(strncmp_P(command_arg, PSTR("read"), 4) == 0)
{
//Argument 2: File name
command_arg = get_cmd_arg(1);
if(command_arg == 0)
continue;
//search file in current directory and open it
if (!file.open(¤tDirectory, command_arg, O_READ)) {
if ((feedback_mode & EXTENDED_INFO) > 0)
{
PgmPrint("Failed to open file ");
Serial.println(command_arg);
}
continue;
}
//Argument 3: File seek position
if ((command_arg = get_cmd_arg(2)) != 0) {
if ((command_arg = is_number(command_arg, strlen(command_arg))) != 0) {
int32_t offset = strtolong(command_arg);
if(!file.seekSet(offset)) {
if ((feedback_mode & EXTENDED_INFO) > 0)
{
PgmPrint("Error seeking to ");
Serial.println(command_arg);
}
file.close();
continue;
}
}
}
//Argument 4: How much data (number of characters) to read from file
uint32_t readAmount = (uint32_t)-1;
if ((command_arg = get_cmd_arg(3)) != 0)
if ((command_arg = is_number(command_arg, strlen(command_arg))) != 0)
readAmount = strtolong(command_arg);
//Argument 5: Should we print ASCII or HEX? 1 = ASCII, 2 = HEX, 3 = RAW
uint32_t printType = 1; //Default to ASCII
if ((command_arg = get_cmd_arg(4)) != 0)
if ((command_arg = is_number(command_arg, strlen(command_arg))) != 0)
printType = strtolong(command_arg);
//Print file contents from current seek position to the end (readAmount)
uint8_t c;
int16_t v;
int16_t readSpot = 0;
while ((v = file.read()) > 0) {
//file.read() returns a 16 bit character. We want to be able to print extended ASCII
//So we need 8 bit unsigned.
c = v; //Force the 16bit signed variable into an 8bit unsigned
if(++readSpot > readAmount) break;
if(printType == 1) { //Printing ASCII
//Test character to see if it is visible, if not print '.'
if(c >= ' ' && c < 127)
Serial.print(c); //Regular ASCII
else if (c == '\n' || c == '\r')
Serial.print(c); //Go ahead and print the carriage returns and new lines
else
Serial.print('.'); //For non visible ASCII characters, print a .
}
else if (printType == 2) {
Serial.print(c, HEX); //Print in HEX
Serial.print(" ");
}
else if (printType == 3) {
Serial.write(c); //Print raw
}
}
file.close();
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
if ((feedback_mode & EMBEDDED_END_MARKER) == 0)
#endif
Serial.println();
}
else if(strncmp_P(command_arg, PSTR("write"), 5) == 0)
{
//Argument 2: File name
command_arg = get_cmd_arg(1);
if(command_arg == 0)
continue;
//search file in current directory and open it
if (!file.open(¤tDirectory, command_arg, O_WRITE)) {
if ((feedback_mode & EXTENDED_INFO) > 0)
{
PgmPrint("Failed to open file ");
Serial.println(command_arg);
}
continue;
}
//Argument 3: File seek position
if ((command_arg = get_cmd_arg(2)) != 0){
if ((command_arg = is_number(command_arg, strlen(command_arg))) != 0) {
int32_t offset = strtolong(command_arg);
if(!file.seekSet(offset)) {
if ((feedback_mode & EXTENDED_INFO) > 0)
{
PgmPrint("Error seeking to ");
Serial.println(command_arg);
}
file.close();
continue;
}
}
}
//read text from the shell and write it to the file
uint8_t dataLen;
while(1) {
#ifdef INCLUDE_SIMPLE_EMBEDDED
if ((feedback_mode & EMBEDDED_END_MARKER) > 0)
Serial.print((char)0x1A); // Ctrl+Z ends the data and marks the start of result
#endif
Serial.print("<"); //give a different prompt
//read one line of text
dataLen = read_line(buffer, sizeof(buffer));
if(!dataLen) {
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
break;
}
//write text to file
if(file.write((uint8_t*) buffer, dataLen) != dataLen) {
if ((feedback_mode & EXTENDED_INFO) > 0)
PgmPrint("error writing to file\n\r");
break;
}
}
file.close();
}
else if(strncmp_P(command_arg, PSTR("size"), 4) == 0)
{
//Argument 2: File name - no wildcard search
command_arg = get_cmd_arg(1);
if(command_arg == 0)
continue;
//search file in current directory and open it
if (file.open(¤tDirectory, command_arg, O_READ)) {
Serial.print(file.fileSize());
file.close();
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
}
else
{
if ((feedback_mode & EXTENDED_INFO) > 0)
PgmPrint("-1"); //Indicate no file is found*/
}
#ifdef INCLUDE_SIMPLE_EMBEDDED
if ((feedback_mode & EMBEDDED_END_MARKER) == 0)
#endif
Serial.println();
}
else if(strcmp_P(command_arg, PSTR("disk")) == 0)
{
//Print card type
PgmPrint("\nCard type: ");
switch(card.type()) {
case SD_CARD_TYPE_SD1:
PgmPrintln("SD1");
break;
case SD_CARD_TYPE_SD2:
PgmPrintln("SD2");
break;
case SD_CARD_TYPE_SDHC:
PgmPrintln("SDHC");
break;
default:
PgmPrintln("Unknown");
}
//Print card information
cid_t cid;
if (!card.readCID(&cid)) {
PgmPrint("readCID failed");
continue;
}
PgmPrint("Manufacturer ID: ");
Serial.println(cid.mid, HEX);
PgmPrint("OEM ID: ");
Serial.print(cid.oid[0]);
Serial.println(cid.oid[1]);
PgmPrint("Product: ");
for (uint8_t i = 0; i < 5; i++) {
Serial.print(cid.pnm[i]);
}
PgmPrint("\n\rVersion: ");
Serial.print(cid.prv_n, DEC);
Serial.print('.');
Serial.println(cid.prv_m, DEC);
PgmPrint("Serial number: ");
Serial.println(cid.psn);
PgmPrint("Manufacturing date: ");
Serial.print(cid.mdt_month);
Serial.print('/');
Serial.println(2000 + cid.mdt_year_low + (cid.mdt_year_high <<4));
csd_t csd;
uint32_t cardSize = card.cardSize();
if (cardSize == 0 || !card.readCSD(&csd)) {
PgmPrintln("readCSD failed");
continue;
}
PgmPrint("Card Size: ");
cardSize /= 2; //Card size is coming up as double what it should be? Don't know why. Dividing it by 2 to correct.
Serial.print(cardSize);
//After division
//7761920 = 8GB card
//994816 = 1GB card
PgmPrintln(" KB");
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
}
else if(strcmp_P(command_arg, PSTR("sync")) == 0)
{
//Flush all current data and record it to card
//This isn't really tested.
file.sync();
currentDirectory.sync();
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
}
else if(strncmp_P(command_arg, PSTR("reset"), 7) == 0)
{
Reset_AVR();
}
else if(strncmp_P(command_arg, PSTR("new"), 3) == 0)
{
//Argument 2: File name
command_arg = get_cmd_arg(1);
if(command_arg == 0)
continue;
//Try to open file, if fail (file doesn't exist), then break
if (file.open(¤tDirectory, command_arg, O_CREAT | O_EXCL | O_WRITE)) {//Will fail if file already exsists
file.close(); //Everything is good, Close this new file we just opened
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
}
else
{
if ((feedback_mode & EXTENDED_INFO) > 0) {
PgmPrint("Error creating file: ");
Serial.println(command_arg);
}
}
}
else if(strncmp_P(command_arg, PSTR("append"), 6) == 0)
{
//Argument 2: File name
//Find the end of a current file and begins writing to it
//Ends only when the user inputs Ctrl+z (ASCII 26)
command_arg = get_cmd_arg(1);
if(command_arg == 0)
continue;
//append_file: Uses circular buffer to capture full stream of text and append to file
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = append_file(command_arg);
#else
append_file(command_arg);
#endif
}
else if(strncmp_P(command_arg, PSTR("pwd"), 3) == 0)
{
Serial.print(".\\");
tmp_var = getNextFolderTreeIndex();
for (uint8_t i = 0; i < tmp_var; i++)
{
Serial.print(folderTree[i]);
if (i < tmp_var-1) Serial.print("\\");
}
Serial.println("");
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = 1;
#endif
}
// echo <on>|<off>
else if(strncmp_P(command_arg, PSTR("echo"), 4) == 0)
{
//Argument 2: <on>|<off>
// Set if we are going to echo the characters back to the client or not
command_arg = get_cmd_arg(1);
if (command_arg != 0)
{
if ((tmp_var = strncmp_P(command_arg, PSTR("on"), 2)) == 0)
feedback_mode |= ECHO;
else if ((tmp_var = strncmp_P(command_arg, PSTR("off"), 3)) == 0)
feedback_mode &= ((uint8_t)~ECHO);
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = (tmp_var == 0);
#endif
}
}
// verbose <on>|<off>
else if(strncmp_P(command_arg, PSTR("verbose"), 7) == 0)
{
//Argument 2: <on>|<off>
// Set if we are going to show extended error information when executing commands
command_arg = get_cmd_arg(1);
if (command_arg != 0)
{
if ((tmp_var = strncmp_P(command_arg, PSTR("on"), 2)) == 0)
feedback_mode |= EXTENDED_INFO;
else if ((tmp_var = strncmp_P(command_arg, PSTR("off"), 3)) == 0)
feedback_mode &= ((uint8_t)~EXTENDED_INFO);
#ifdef INCLUDE_SIMPLE_EMBEDDED
command_succedded = (tmp_var == 0);
#endif
}
}
#ifdef INCLUDE_SIMPLE_EMBEDDED
// eem (Embedded End Marker) <on>|<off>
else if(strncmp_P(command_arg, PSTR("eem"), 3) == 0)
{
//Argument 2: <on>|<off>
//Set if we are going to enable char 26 (Ctrl+z) as end-of-data
//marker to separate the returned data and the actual
//result of the operation
command_arg = get_cmd_arg(1);
if (command_arg != 0)
{
if ((tmp_var = strncmp_P(command_arg, PSTR("on"), 2)) == 0)
feedback_mode |= EMBEDDED_END_MARKER;
else if ((tmp_var = strncmp_P(command_arg, PSTR("off"), 3)) == 0)
feedback_mode &= ((uint8_t)~EMBEDDED_END_MARKER);
command_succedded = (tmp_var == 0);
}
}
// ecountf
// returns the number of files in current folder |count|
else if(strncmp_P(command_arg, PSTR("efcount"), 7) == 0)
{
//Argument 2: wild card search
command_arg = get_cmd_arg(1);
file_index = 0;
PgmPrint("count|");
Serial.println(currentDirectory.fileInfo(FI_COUNT, 0, buffer));
command_succedded = 1;
}
// efname <file index>
// Returns the name and the size of a file <name>|<size>
else if(strncmp_P(command_arg, PSTR("efinfo"), 6) == 0)
{
//Argument 2: File index
command_arg = get_cmd_arg(1);
if (command_arg != 0)
{
// File index should always be a number
if ((command_arg = is_number(command_arg, strlen(command_arg))) != 0)
{
file_index = strtolong(command_arg);
memset(buffer, 0, sizeof(buffer));
uint32_t size = currentDirectory.fileInfo(FI_INFO, file_index, buffer);
Serial.print(buffer);
Serial.print('|');
Serial.println(size);
command_succedded = 1;
}
}
}
#endif //INCLUDE_SIMPLE_EMBEDDED
else
{
if ((feedback_mode & EXTENDED_INFO) > 0) {
PgmPrint("unknown command: ");
Serial.println(command_arg);
}
}
}
//Do we ever get this far?
PgmPrint("Exiting: closing down\n");
}
//Reads a line until the \n enter character is found
uint8_t read_line(char* buffer, uint8_t buffer_length)
{
memset(buffer, 0, buffer_length);
uint8_t read_length = 0;
while(read_length < buffer_length - 1) {
//while (!Serial.available()); //We've destroyed the standard way Arduino reads characters so this no longer works
//uint8_t c = Serial.read();
uint8_t c = uart_getc(); //It would be better to pull directly from the UART buffer and use the RX interrupt, but this works
STAT1_PORT ^= (1<<STAT1); //Blink the stat LED while typing
if(c == 0x08 || c == 0x7f) { //Backspace characters
if(read_length < 1)
continue;
--read_length;
buffer[read_length] = '\0';
Serial.print((char)0x08);
Serial.print(' ');
Serial.print((char)0x08);
continue;
}
// Only echo back if this is enabled
if ((feedback_mode & ECHO) > 0)
Serial.print((char)c);
if(c == '\r') {
Serial.println();
buffer[read_length] = '\0';
break;
}
else if (c == '\n') {
//Do nothing - ignore newlines
//This was added to v2.51 to make command line control easier from a micro
//You never know what fprintf or sprintf is going to throw at the buffer
//See issue 66: https://github.com/nseidle/OpenLog/issues/66
}
else {
buffer[read_length] = c;
++read_length;
}
}
//Split the command line into arguments
split_cmd_line_args(buffer, buffer_length);
return read_length;
}
uint8_t uart_getc(void)
{
while(!(UCSR0A & _BV(RXC0)));
uint8_t b = UDR0;
return b;
}
//Reads the current system settings from EEPROM
//If anything looks weird, reset setting to default value
void read_system_settings(void)
{
//Read what the current UART speed is from EEPROM memory
//Default is 9600
setting_uart_speed = EEPROM.read(LOCATION_BAUD_SETTING);
if(setting_uart_speed > 10)
{
setting_uart_speed = BAUD_9600; //Reset UART to 9600 if there is no speed stored
EEPROM.write(LOCATION_BAUD_SETTING, setting_uart_speed);
}
//Determine the system mode we should be in
//Default is NEWLOG mode
setting_system_mode = EEPROM.read(LOCATION_SYSTEM_SETTING);
if(setting_system_mode > 5)
{
setting_system_mode = MODE_NEWLOG; //By default, unit will turn on and go to new file logging
EEPROM.write(LOCATION_SYSTEM_SETTING, setting_system_mode);
}
//Read the escape_character
//ASCII(26) is ctrl+z
setting_escape_character = EEPROM.read(LOCATION_ESCAPE_CHAR);
if(setting_escape_character == 0 || setting_escape_character == 255)
{
setting_escape_character = 26; //Reset escape character to ctrl+z
EEPROM.write(LOCATION_ESCAPE_CHAR, setting_escape_character);
}
//Read the number of escape_characters to look for
//Default is 3
setting_max_escape_character = EEPROM.read(LOCATION_MAX_ESCAPE_CHAR);
if(setting_max_escape_character == 0 || setting_max_escape_character == 255)
{
setting_max_escape_character = 3; //Reset number of escape characters to 3
EEPROM.write(LOCATION_MAX_ESCAPE_CHAR, setting_max_escape_character);
}
}
void print_menu(void)
{
PgmPrintln("OpenLog v2.5");
PgmPrintln("Basic commands:");
PgmPrintln("new <file>\t\t: Creates <file>");
PgmPrintln("append <file>\t\t: Appends text to end of <file>. The text is read from the UART in a stream and is not echoed. Finish by sending Ctrl+z (ASCII 26)");
//PgmPrintln("write <file> <offset>\t: Writes text to <file>, starting from <offset>. The text is read from the UART, line by line. Finish with an empty line");
//PgmPrintln("rm <file>\t\t: Deletes <file>. Use wildcard to do a wildcard removal of files");
PgmPrintln("md <directory>\t: Creates a directory called <directory>");
//PgmPrintln("cd <directory>\t\t: Changes current working directory to <directory>");
//PgmPrintln("cd ..\t\t: Changes to lower directory in tree");
PgmPrintln("ls\t\t\t: Shows the content of the current directory. Use wildcard to do a wildcard listing of files in current directory");
PgmPrintln("read <file> <start> <length> <type>\t\t: Writes ASCII <length> parts of <file> to the terminal starting at <start>. Omit <start> and <length> to read whole file. <type> 1 prints in ASCII, 2 in HEX.");
PgmPrintln("size <file>\t\t: Write size of file to terminal");
PgmPrintln("disk\t\t\t: Shows card manufacturer, status, filesystem capacity and free storage space");
//PgmPrintln("init\t\t\t: Reinitializes and reopens the memory card");
//PgmPrintln("sync\t\t\t: Ensures all buffered data is written to the card");
PgmPrintln("reset\t\t\t: Causes unit to reset and using any new parameters in config file");
PgmPrintln("\n\rMenus:");
PgmPrintln("set\t\t\t: Menu to configure system mode");
PgmPrintln("baud\t\t\t: Menu to configure baud rate");
}
//Configure what baud rate to communicate at
void baud_menu(void)
{
char buffer[5];
uint8_t uart_speed = EEPROM.read(LOCATION_BAUD_SETTING);
while(1)
{
PgmPrintln("\n\rBaud Configuration:");
PgmPrint("Current: ");
if(uart_speed == BAUD_4800) PgmPrint("48");
if(uart_speed == BAUD_2400) PgmPrint("24");
if(uart_speed == BAUD_9600) PgmPrint("96");
if(uart_speed == BAUD_19200) PgmPrint("192");
if(uart_speed == BAUD_38400) PgmPrint("384");
if(uart_speed == BAUD_57600) PgmPrint("576");
if(uart_speed == BAUD_115200) PgmPrint("1152");
PgmPrintln("00 bps");
PgmPrintln("Change to:");
PgmPrintln("1) 2400 bps");
PgmPrintln("2) 4800 bps");
PgmPrintln("3) 9600 bps");
PgmPrintln("4) 19200 bps");
PgmPrintln("5) 38400 bps");
PgmPrintln("6) 57600 bps");
PgmPrintln("7) 115200 bps");
PgmPrintln("x) Exit");
//print prompt
Serial.print('>');
//read command
char* command = buffer;
if(read_line(command, sizeof(buffer)) < 1)
continue;
//execute command
if(strcmp_P(command, PSTR("1")) == 0)
{
PgmPrintln("Going to 2400bps...");
//Set baud rate to 2400
EEPROM.write(LOCATION_BAUD_SETTING, BAUD_2400);
record_config_file(); //Put this new setting into the config file
blink_error(ERROR_NEW_BAUD);
return;
}
if(strcmp_P(command, PSTR("2")) == 0)
{
PgmPrintln("Going to 4800bps...");
//Set baud rate to 4800
EEPROM.write(LOCATION_BAUD_SETTING, BAUD_4800);
record_config_file(); //Put this new setting into the config file
blink_error(ERROR_NEW_BAUD);
return;
}
if(strcmp_P(command, PSTR("3")) == 0)
{
PgmPrintln("Going to 9600bps...");
//Set baud rate to 9600
EEPROM.write(LOCATION_BAUD_SETTING, BAUD_9600);
record_config_file(); //Put this new setting into the config file
blink_error(ERROR_NEW_BAUD);
return;
}
if(strcmp_P(command, PSTR("4")) == 0)
{
PgmPrintln("Going to 19200bps...");
//Set baud rate to 19200
EEPROM.write(LOCATION_BAUD_SETTING, BAUD_19200);
record_config_file(); //Put this new setting into the config file
blink_error(ERROR_NEW_BAUD);
return;
}
if(strcmp_P(command, PSTR("5")) == 0)
{
PgmPrintln("Going to 38400bps...");
//Set baud rate to 38400
EEPROM.write(LOCATION_BAUD_SETTING, BAUD_38400);
record_config_file(); //Put this new setting into the config file
blink_error(ERROR_NEW_BAUD);
return;
}
if(strcmp_P(command, PSTR("6")) == 0)
{
PgmPrintln("Going to 57600bps...");
//Set baud rate to 57600
EEPROM.write(LOCATION_BAUD_SETTING, BAUD_57600);
record_config_file(); //Put this new setting into the config file
blink_error(ERROR_NEW_BAUD);
return;
}
if(strcmp_P(command, PSTR("7")) == 0)
{
PgmPrintln("Going to 115200bps...");
//Set baud rate to 115200
EEPROM.write(LOCATION_BAUD_SETTING, BAUD_115200);
record_config_file(); //Put this new setting into the config file
blink_error(ERROR_NEW_BAUD);
return;
}
if(strcmp_P(command, PSTR("x")) == 0)
{
PgmPrintln("Exiting");
//Do nothing, just exit
return;
}
}
}
//Change how OpenLog works
//1) Turn on unit, unit will create new file, and just start logging
//2) Turn on, append to known file, and just start logging
//3) Turn on, sit at command prompt
//4) Resets the newlog file number to zero
void system_menu(void)
{
uint8_t system_mode = EEPROM.read(LOCATION_SYSTEM_SETTING);
while(1)
{
PgmPrintln("\r\nSystem Configuration");
PgmPrint("Current boot mode: ");
if(system_mode == MODE_NEWLOG) PgmPrint("New file");
if(system_mode == MODE_SEQLOG) PgmPrint("Append file");
if(system_mode == MODE_COMMAND) PgmPrint("Command");
Serial.println();//("\n");
PgmPrint("Current escape character and amount: ");
Serial.print(setting_escape_character, DEC);
PgmPrint(" x ");
Serial.println(setting_max_escape_character, DEC);
PgmPrintln("Change to:");
PgmPrintln("1) New file logging");
PgmPrintln("2) Append file logging");
PgmPrintln("3) Command prompt");
PgmPrintln("4) Reset new file number");
PgmPrintln("5) New escape character");
PgmPrintln("6) Number of escape characters");
#if DEBUG
PgmPrintln("a) Clear all user settings");
#endif
PgmPrintln("x) Exit");
//print prompt
Serial.print('>');
//read command
char buffer[5];
char* command = buffer;
if(read_line(command, sizeof(buffer)) < 1)
continue;
//execute command
if(strcmp_P(command, PSTR("1")) == 0)
{
PgmPrintln("New file logging");
EEPROM.write(LOCATION_SYSTEM_SETTING, MODE_NEWLOG);
record_config_file(); //Put this new setting into the config file
return;
}
if(strcmp_P(command, PSTR("2")) == 0)
{
PgmPrintln("Append file logging");
EEPROM.write(LOCATION_SYSTEM_SETTING, MODE_SEQLOG);
record_config_file(); //Put this new setting into the config file
return;
}
if(strcmp_P(command, PSTR("3")) == 0)
{
PgmPrintln("Command prompt");
EEPROM.write(LOCATION_SYSTEM_SETTING, MODE_COMMAND);
record_config_file(); //Put this new setting into the config file
return;
}
if(strcmp_P(command, PSTR("4")) == 0)
{
PgmPrintln("New file number reset to zero");
EEPROM.write(LOCATION_FILE_NUMBER_LSB, 0);
EEPROM.write(LOCATION_FILE_NUMBER_MSB, 0);
//65533 log testing
//EEPROM_write(LOCATION_FILE_NUMBER_LSB, 0xFD);
//EEPROM_write(LOCATION_FILE_NUMBER_MSB, 0xFF);
return;
}
if(strcmp_P(command, PSTR("5")) == 0)
{
PgmPrint("Enter a new escape character: ");
//while(!Serial.available()); //Wait for user to hit character
//setting_escape_character = Serial.read();
setting_escape_character = uart_getc();
EEPROM.write(LOCATION_ESCAPE_CHAR, setting_escape_character);
record_config_file(); //Put this new setting into the config file
PgmPrint("\n\rNew escape character: ");
Serial.println(setting_escape_character, DEC);
return;
}
if(strcmp_P(command, PSTR("6")) == 0)
{
uint8_t choice = 10;
while(choice > 9 || choice < 1)
{
PgmPrint("\n\rEnter number of escape characters to look for (1 to 9): ");
//while(!Serial.available()); //Wait for user to hit character
//choice = Serial.read() - '0';
choice = uart_getc() - '0';
}
setting_max_escape_character = choice;
EEPROM.write(LOCATION_MAX_ESCAPE_CHAR, setting_max_escape_character);
record_config_file(); //Put this new setting into the config file
PgmPrint("\n\rNumber of escape characters needed: ");
Serial.println(setting_max_escape_character, DEC);
return;
}
#if DEBUG
//This allows us to reset the EEPROM and config file on a unit to see what would happen to an
//older unit that is upgraded/reflashed to newest firmware
if(strcmp_P(command, PSTR("a")) == 0)
{
EEPROM.write(LOCATION_BAUD_SETTING, 0xFF);
EEPROM.write(LOCATION_SYSTEM_SETTING, 0xFF);
EEPROM.write(LOCATION_FILE_NUMBER_LSB, 0xFF);
EEPROM.write(LOCATION_FILE_NUMBER_MSB, 0xFF);
EEPROM.write(LOCATION_ESCAPE_CHAR, 0xFF);
EEPROM.write(LOCATION_MAX_ESCAPE_CHAR, 0xFF);
//Remove the config file if it is there
SdFile rootDirectory;
if (!rootDirectory.openRoot(&volume)) error("openRoot"); // open the root directory
char configFileName[13];
sprintf(configFileName, CFG_FILENAME); //This is the name of the config file. 'config.sys' is probably a bad idea.
//If there is currently a config file, trash it
if (file.open(&rootDirectory, configFileName, O_WRITE)) {
PgmPrintln("Deleting config");
if (!file.remove()){
PgmPrintln("Remove config failed");
return;
}
}
PgmPrintln("Unit has been reset. Please power cycle");
while(1);
}
#endif
if(strcmp_P(command, PSTR("x")) == 0)
{
//Do nothing, just exit
PgmPrintln("Exiting");
return;
}
}
}
void read_config_file(void)
{
SdFile rootDirectory;
if (!rootDirectory.openRoot(&volume)) error("openRoot"); // open the root directory
char configFileName[13];
sprintf(configFileName, CFG_FILENAME); //This is the name of the config file. 'config.sys' is probably a bad idea.
//Check to see if we have a config file
if (file.open(&rootDirectory, configFileName, O_READ)) {
//If we found the config file then load settings from file and push them into EEPROM
#if DEBUG
PgmPrintln("Found config file!");
#endif
//Read up to 20 characters from the file. There may be a better way of doing this...
char c;
int len;
uint8_t settings_string[20]; //"115200,103,14,0\0" = 115200 bps, escape char of ASCII(103), 14 times, new log mode. 20 characters is longer than the max (16).
for(len = 0 ; len < 20 ; len++) {
if( (c = file.read()) < 0) break; //We've reached the end of the file
settings_string[len] = c;
}
file.close();
rootDirectory.close();
#if DEBUG
//Print line for debugging
Serial.print("Text Settings: ");
for(int i = 0; i < len; i++)
Serial.print(settings_string[i]);
Serial.println();
Serial.print("Len: ");
Serial.println(len);
#endif
//Default the system settings in case things go horribly wrong
char new_system_baud = BAUD_9600;
char new_system_mode = MODE_NEWLOG;
char new_system_escape = 26;
char new_system_max_escape = 3;
//Parse the settings out
uint8_t i = 0, j = 0, setting_number = 0;
char new_setting[7]; //Max length of a setting is 6, the bps setting = '115200' plus '\0'
for(i = 0 ; i < len; i++)
{
//Pick out one setting from the line of text
for(j = 0 ; settings_string[i] != ',' && i < len && j < 6 ; )
{
new_setting[j] = settings_string[i];
i++;
j++;
}
new_setting[j] = '\0'; //Terminate the string for array compare
if(setting_number == 0) //Baud rate
{
if( strcmp(new_setting, "2400") == 0) new_system_baud = BAUD_2400;
else if( strcmp(new_setting, "4800") == 0) new_system_baud = BAUD_4800;
else if( strcmp(new_setting, "9600") == 0) new_system_baud = BAUD_9600;
else if( strcmp(new_setting, "19200") == 0) new_system_baud = BAUD_19200;
else if( strcmp(new_setting, "38400") == 0) new_system_baud = BAUD_38400;
else if( strcmp(new_setting, "57600") == 0) new_system_baud = BAUD_57600;
else if( strcmp(new_setting, "115200") == 0) new_system_baud = BAUD_115200;
else new_system_baud = BAUD_9600; //Default is 9600bps
}
else if(setting_number == 1) //Escape character
{
new_system_escape = atoi(new_setting);
if(new_system_escape == 0 || new_system_escape > 127) new_system_escape = 26; //Default is ctrl+z
}
else if(setting_number == 2) //Max amount escape character
{
new_system_max_escape = atoi(new_setting);
if(new_system_max_escape == 0 || new_system_max_escape > 10) new_system_max_escape = 3; //Default is 3
}
else if(setting_number == 3) //System mode
{
new_system_mode = atoi(new_setting);
if(new_system_mode == 0 || new_system_mode > 5) new_system_mode = MODE_NEWLOG; //Default is NEWLOG
}
else
//We're done! Stop looking for settings
break;
setting_number++;
}
#if DEBUG
//This will print the found settings. Use for debugging
PgmPrint("Settings determined to be: ");
char temp_string[16]; //"115200,103,14,0\0" = 115200 bps, escape char of ASCII(103), 14 times, new log mode
char temp[3];
if(new_system_baud == BAUD_2400) strcpy(temp_string, "2400");
if(new_system_baud == BAUD_4800) strcpy(temp_string, "4800");
if(new_system_baud == BAUD_9600) strcpy(temp_string, "9600");
if(new_system_baud == BAUD_19200) strcpy(temp_string, "19200");
if(new_system_baud == BAUD_38400) strcpy(temp_string, "38400");
if(new_system_baud == BAUD_57600) strcpy(temp_string, "57600");
if(new_system_baud == BAUD_115200) strcpy(temp_string, "115200");
strcat(temp_string, ",");
//Convert escape character to an ASCII visible string
sprintf(temp, "%d", new_system_escape);
strcat(temp_string, temp); //Add this string to the system string
strcat(temp_string, ",");
//Convert max escape character to an ASCII visible string
sprintf(temp, "%d", new_system_max_escape);
strcat(temp_string, temp); //Add this string to the system string
strcat(temp_string, ",");
//Convert system mode to a ASCII visible character
sprintf(temp, "%d", new_system_mode);
strcat(temp_string, temp); //Add this string to the system string
strcat(temp_string, "\0");
Serial.println(temp_string);
#endif
//We now have the settings loaded into the global variables. Now check if they're different from EEPROM settings
boolean recordNewSettings = FALSE;
if(new_system_baud != setting_uart_speed) {
//If the baud rate from the file is different from the current setting,
//Then update the setting to the file setting
//And re-init the UART
EEPROM.write(LOCATION_BAUD_SETTING, new_system_baud);
setting_uart_speed = new_system_baud;
//Move system to new uart speed
if(setting_uart_speed == BAUD_2400) Serial.begin(2400);
if(setting_uart_speed == BAUD_4800) Serial.begin(4800);
if(setting_uart_speed == BAUD_9600) Serial.begin(9600);
if(setting_uart_speed == BAUD_19200) Serial.begin(19200);
if(setting_uart_speed == BAUD_38400) Serial.begin(38400);
if(setting_uart_speed == BAUD_57600) Serial.begin(57600);
if(setting_uart_speed == BAUD_115200) Serial.begin(115200);
recordNewSettings = TRUE;
}
if(new_system_mode != setting_system_mode) {
//Goto new system mode
setting_system_mode = new_system_mode;
EEPROM.write(LOCATION_SYSTEM_SETTING, setting_system_mode);
recordNewSettings = TRUE;
}
if(new_system_escape != setting_escape_character) {
//Goto new system escape char
setting_escape_character = new_system_escape;
EEPROM.write(LOCATION_ESCAPE_CHAR, setting_escape_character);
recordNewSettings = TRUE;
}
if(new_system_max_escape != setting_max_escape_character) {
//Goto new max escape
setting_max_escape_character = new_system_max_escape;
EEPROM.write(LOCATION_MAX_ESCAPE_CHAR, setting_max_escape_character);
recordNewSettings = TRUE;
}
//We don't want to constantly record a new config file on each power on. Only record when there is a change.
if(recordNewSettings == TRUE)
record_config_file(); //If we corrected some values because the config file was corrupt, then overwrite any corruption
#if DEBUG
else
PgmPrintln("Config file matches system settings");
#endif
//All done! New settings are loaded. System will now operate off new config settings found in file.
}
else {
//If we don't have a config file already, then create config file and record the current system settings to the file
#if DEBUG
PgmPrintln("No config found - creating default:");
#endif
//Record the current eeprom settings to the config file
record_config_file();
}
}
//Records the current EEPROM settings to the config file
//If a config file exists, it is trashed and a new one is created
void record_config_file(void)
{
//I'm worried that the user may not be in the root directory when modifying config settings. If that is the case,
//config file will not be found and it will be created in some erroneus directory. The changes to user settings may be lost on the
//next power cycles. To prevent this, we will open another instance of the file system, then close it down when we are done.
SdFile rootDirectory;
if (!rootDirectory.openRoot(&volume)) error("openRoot"); // open the root directory
char configFileName[13];
sprintf(configFileName, CFG_FILENAME); //This is the name of the config file. 'config.sys' is probably a bad idea.
//If there is currently a config file, trash it
if (file.open(&rootDirectory, configFileName, O_WRITE)) {
#if DEBUG
PgmPrintln("Deleting config");
#endif
if (!file.remove()){
PgmPrintln("Remove config failed");
return;
}
}
//Create config file
if (file.open(&rootDirectory, configFileName, O_CREAT | O_APPEND | O_WRITE) == 0) {
PgmPrintln("Create config failed");
return;
}
else {
//Config was successfully created, now record current system settings to the config file
//Baud, escape character, escape times, system mode (0 = new log)
char settings_string[16]; //"115200,103,14,0\0" = 115200 bps, escape char of ASCII(103), 14 times, new log mode
char temp[3];
//Before we read the EEPROM values, they've already been tested and defaulted in the read_system_settings function
char current_system_baud = EEPROM.read(LOCATION_BAUD_SETTING);
char current_system_mode = EEPROM.read(LOCATION_SYSTEM_SETTING);
char current_system_escape = EEPROM.read(LOCATION_ESCAPE_CHAR);
char current_system_max_escape = EEPROM.read(LOCATION_MAX_ESCAPE_CHAR);
//Determine current baud and copy it to string
if(current_system_baud == BAUD_2400) strcpy(settings_string, "2400");
if(current_system_baud == BAUD_4800) strcpy(settings_string, "4800");
if(current_system_baud == BAUD_9600) strcpy(settings_string, "9600");
if(current_system_baud == BAUD_19200) strcpy(settings_string, "19200");
if(current_system_baud == BAUD_38400) strcpy(settings_string, "38400");
if(current_system_baud == BAUD_57600) strcpy(settings_string, "57600");
if(current_system_baud == BAUD_115200) strcpy(settings_string, "115200");
strcat(settings_string, ",");
//Convert escape character to an ASCII visible string
sprintf(temp, "%d", current_system_escape);
strcat(settings_string, temp); //Add this string to the system string
strcat(settings_string, ",");
//Convert max escape character to an ASCII visible string
sprintf(temp, "%d", current_system_max_escape);
strcat(settings_string, temp); //Add this string to the system string
strcat(settings_string, ",");
//Convert system mode to a ASCII visible character
sprintf(temp, "%d", current_system_mode);
strcat(settings_string, temp); //Add this string to the system string
strcat(settings_string, "\0");
//Record current system settings to the config file
//strcpy( (char*)input_buffer, "9600,26,3,0\0");
strcpy( (char*)general_buffer, settings_string);
#if DEBUG
PgmPrint("\nSetting string: ");
Serial.println(settings_string);
#endif
if(file.write((uint8_t*)general_buffer, strlen(settings_string)) != strlen(settings_string))
PgmPrintln("error writing to file");
file.sync(); //Sync all newly written data to card
file.close(); //Close this file
rootDirectory.close(); //Close this file structure instance
//Now the new config file has the current system settings, nothing else to do!
}
}
//A rudimentary way to convert a string to a long 32 bit integer
//Used to the read command, in command shell
uint32_t strtolong(const char* str)
{
uint32_t l = 0;
while(*str >= '0' && *str <= '9')
l = l * 10 + (*str++ - '0');
return l;
}
//Blinks the status LEDs to indicate a type of error
void blink_error(uint8_t ERROR_TYPE)
{
while(1)
{
for(int x = 0 ; x < ERROR_TYPE ; x++)
{
digitalWrite(statled1, HIGH);
delay(200);
digitalWrite(statled1, LOW);
delay(200);
}
delay(2000);
}
}
//Check to see if we need an emergency UART reset
//Scan the RX pin for 2 seconds
//If it's low the entire time, then return 1
void check_emergency_reset(void)
{
pinMode(0, INPUT); //Turn the RX pin into an input
digitalWrite(0, HIGH); //Push a 1 onto RX pin to enable internal pull-up
//Quick pin check
if(digitalRead(0) == HIGH) return;
//Wait 2 seconds, blinking LEDs while we wait
pinMode(statled2, OUTPUT);
digitalWrite(statled2, HIGH); //Set the STAT2 LED
for(uint8_t i = 0 ; i < 40 ; i++)
{
delay(25);
STAT1_PORT ^= (1<<STAT1); //Blink the stat LEDs
if(digitalRead(0) == HIGH) return; //Check to see if RX is not low anymore
delay(25);
STAT2_PORT ^= (1<<STAT2); //Blink the stat LEDs
if(digitalRead(0) == HIGH) return; //Check to see if RX is not low anymore
}
//If we make it here, then RX pin stayed low the whole time
set_default_settings(); //Reset baud, escape characters, escape number, system mode
//Try to setup the SD card so we can record these new settings
if (!card.init()) error("card.init"); // initialize the SD card
if (!volume.init(&card)) error("volume.init"); // initialize a FAT volume
if (!currentDirectory.openRoot(&volume)) error("openRoot"); // open the root directory
record_config_file(); //Record new config settings
pinMode(statled1, OUTPUT);
pinMode(statled2, OUTPUT);
digitalWrite(statled1, HIGH);
digitalWrite(statled2, HIGH);
//Now sit in forever loop indicating system is now at 9600bps
while(1)
{
delay(500);
STAT1_PORT ^= (1<<STAT1); //Blink the stat LEDs
STAT2_PORT ^= (1<<STAT2); //Blink the stat LEDs
}
}
//Resets all the system settings to safe values
void set_default_settings(void)
{
//Reset UART to 9600bps
EEPROM.write(LOCATION_BAUD_SETTING, BAUD_9600);
//Reset system to new log mode
EEPROM.write(LOCATION_SYSTEM_SETTING, MODE_NEWLOG);
//Reset escape character to ctrl+z
EEPROM.write(LOCATION_ESCAPE_CHAR, 26);
//Reset number of escape characters to 3
EEPROM.write(LOCATION_MAX_ESCAPE_CHAR, 3);
//These settings are not recorded to the config file
//We can't do it here because we are not sure the FAT system is init'd
}
//These functions were added for wild card delete and search
//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//Returns the number of command line arguments
uint8_t count_cmd_args(void)
{
uint8_t count = 0;
uint8_t i = 0;
for(; i < MAX_COUNT_COMMAND_LINE_ARGS; i++)
if((cmd_arg[i].arg != 0) && (cmd_arg[i].arg_length > 0))
count++;
return count;
}
//Safe index handling of command line arguments
char* get_cmd_arg(uint8_t index)
{
memset(general_buffer, 0, sizeof(general_buffer));
if (index < MAX_COUNT_COMMAND_LINE_ARGS)
if ((cmd_arg[index].arg != 0) && (cmd_arg[index].arg_length > 0))
return strncpy(general_buffer, cmd_arg[index].arg, MIN(sizeof(general_buffer), cmd_arg[index].arg_length));
return 0;
}
//Safe adding of command line arguments
void add_cmd_arg(char* buffer, uint8_t buffer_length)
{
uint8_t count = count_cmd_args();
if (count < MAX_COUNT_COMMAND_LINE_ARGS)
{
cmd_arg[count].arg = buffer;
cmd_arg[count].arg_length = buffer_length;
}
}
//Split the command line arguments
//Example:
// read <filename> <start> <length>
// arg[0] -> read
// arg[1] -> <filename>
// arg[2] -> <start>
// arg[3] -> <end>
uint8_t split_cmd_line_args(char* buffer, uint8_t buffer_length)
{
uint8_t arg_index_start = 0;
uint8_t arg_index_end = 1;
//Reset command line arguments
memset(cmd_arg, 0, sizeof(cmd_arg));
//Split the command line arguments
while (arg_index_end < buffer_length)
{
//Search for ASCII 32 (Space)
if ((buffer[arg_index_end] == ' ') || (arg_index_end + 1 == buffer_length))
{
//Fix for last character
if (arg_index_end + 1 == buffer_length)
arg_index_end = buffer_length;
//Add this command line argument to the list
add_cmd_arg(&(buffer[arg_index_start]), (arg_index_end - arg_index_start));
arg_index_start = ++arg_index_end;
}
arg_index_end++;
}
//Return the number of available command line arguments
return count_cmd_args();
}
//Returns char* pointer to buffer if buffer is a valid number or
//0(null) if not.
char* is_number(char* buffer, uint8_t buffer_length)
{
for (int i = 0; i < buffer_length; i++)
if (!isdigit(buffer[i]))
return 0;
return buffer;
}
void removeErrorCallback(const char* fileName)
{
Serial.print((char *)PSTR("Remove failed: "));
Serial.println(fileName);
}
//Wildcard string compare.
//Written by Jack Handy - jakkhandy@hotmail.com
//http://www.codeproject.com/KB/string/wildcmp.aspx
uint8_t wildcmp(const char* wild, const char* string)
{
const char *cp = 0;
const char *mp = 0;
while (*string && (*wild != '*'))
{
if ((*wild != *string) && (*wild != '?'))
return 0;
wild++;
string++;
}
while (*string)
{
if (*wild == '*')
{
if (!(*(++wild)))
return 1;
mp = wild;
cp = string+1;
}
else if ((*wild == *string) || (*wild== '?'))
{
wild++;
string++;
}
else
{
wild = mp;
string = cp++;
}
}
while (*wild == '*')
wild++;
return !(*wild);
}
//End wildcard functions
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