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/*---------------------------------------------------------------------------------------------------------------------------------------------------
* irmpextlog.c - external logging
*
* $Id: irmpextlog.c,v 1.1 2012/02/16 10:40:08 fm Exp $
*
* If you cannot use the internal UART logging routine, adapt the
* source below for your application. The following implementation
* is an example for a PIC 18F2550 with USB interface.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*---------------------------------------------------------------------------------------------------------------------------------------------------
*/
#include "irmpconfig.h"
#if IRMP_EXT_LOGGING == 1
#include "irmpextlog.h"
#include "system/usb/usb.h"
#define bit_set(var,bitnr) ((var) |= 1 << (bitnr)) // set single bit in byte
#define loglen 50 // byte length for saving the data from irmp.c
// check your USB settings for max length of USB interface used for this FW!
static unsigned char logdata[loglen]; // array for saveing the data from irmp.c
static unsigned char logindex = 3; // start index of logdata
static char bitindex = 7; // bit position in current byte
static unsigned int bitcount;
/*---------------------------------------------------------------------------------------------------------------------------------------------------
* Initialize external logging
*---------------------------------------------------------------------------------------------------------------------------------------------------
*/
void
initextlog (void) // reset all data to default, only during init
{
unsigned char i;
for (i = 0; i < loglen; i++)
{
logdata[i] = 0;
}
bitcount = 0;
logindex = 3;
bitindex = 7;
}
/*---------------------------------------------------------------------------------------------------------------------------------------------------
* Send logging data via device (e.g. USB on PIC)
*---------------------------------------------------------------------------------------------------------------------------------------------------
*/
void
sendextlog (unsigned char data)
{
if (logindex == loglen || data == '\n') // buffer full or \n --> send to application
{
if (mUSBUSARTIsTxTrfReady()) // check USB, if ready send
{
logdata[0] = 0x01; // indicator for logging, depends on your application
logdata[1] = logindex; // save how much bytes are send from irmp.c
logdata[2] = 0; // set \n Index to 0; 0=buffer full; 0xA=\n received
if (data == '\n')
{
logdata[2] = data; // \n --> save \n=0xA in to check in app that \n was received
}
mUSBUSARTTxRam((unsigned char *) &logdata, loglen); // send all Data to main Seoftware
logindex = 3; // reset index
bitindex = 7; // reset bit position
logdata[logindex] = 0; // reset value of new logindex to 0
}
}
else
{
bitcount++;
if (data == '1')
{
bit_set(logdata[logindex], bitindex); // all logdata[logindex] on start = 0 --> only 1 must be set
}
bitindex--; // decrease bitposition, wirte from left to right
if (bitindex == -1) // byte complete Bit 7->0 --> next one
{
bitindex = 7;
logindex++;
if (logindex < loglen)
{
logdata[logindex] = 0; // set next byte to 0
}
}
}
}
#endif //IRMP_EXT_LOGGING
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