irmpextlog.c

   1 /*---------------------------------------------------------------------------------------------------------------------------------------------------
   2  * irmpextlog.c - external logging
   3  *
   4  * $Id: irmpextlog.c,v 1.4 2014/02/19 12:57:36 fm Exp $
   5  *
   6  * If you cannot use the internal UART logging routine, adapt the
   7  * source below for your application. The following implementation
   8  * is an example for a PIC 18F2550 with USB interface.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *---------------------------------------------------------------------------------------------------------------------------------------------------
  15  */
  16 #include "irmp.h"
  17
  18 #if IRMP_EXT_LOGGING == 1
  19
  20 #include "irmpextlog.h"
  21 #include "system/usb/usb.h"
  22
  23 #define bit_set(var,bitnr)      ((var) |= 1 << (bitnr))         // set single bit in byte
  24 #define loglen                  50                              // byte length for saving the data from irmp.c
  25                                                                 // check your USB settings for max length of USB interface used for this FW!
  26 static unsigned char            logdata[loglen];                // array for saveing the data from irmp.c
  27 static unsigned char            logindex = 3;                   // start index of logdata
  28 static char                     bitindex = 7;                   // bit position in current byte
  29 static unsigned int             bitcount;
  30
  31 /*---------------------------------------------------------------------------------------------------------------------------------------------------
  32  * Initialize external logging
  33  *---------------------------------------------------------------------------------------------------------------------------------------------------
  34  */
  35 void
  36 initextlog (void)                                               // reset all data to default, only during init
  37 {
  38     unsigned char i;
  39
  40     for (i = 0; i < loglen; i++)
  41     {
  42         logdata[i] = 0;
  43     }
  44
  45     bitcount = 0;
  46     logindex = 3;
  47     bitindex = 7;
  48 }
  49
  50 /*---------------------------------------------------------------------------------------------------------------------------------------------------
  51  * Send logging data via device (e.g. USB on PIC)
  52  *---------------------------------------------------------------------------------------------------------------------------------------------------
  53  */
  54 void
  55 sendextlog (unsigned char data)
  56 {
  57     if (logindex == loglen || data == '\n')                     // buffer full or \n  -->  send to application
  58     {
  59         if (mUSBUSARTIsTxTrfReady())                            // check USB, if ready send
  60         {
  61             logdata[0] = 0x01;                                  // indicator for logging, depends on your application
  62             logdata[1] = logindex;                              // save how much bytes are send from irmp.c
  63             logdata[2] = 0;                                     // set \n Index to 0;  0=buffer full;  0xA=\n received
  64
  65             if (data == '\n')
  66             {
  67                 logdata[2] = data;                              // \n --> save \n=0xA in to check in app that \n was received
  68             }
  69
  70             mUSBUSARTTxRam((unsigned char *) &logdata, loglen); // send all Data to main Seoftware
  71
  72             logindex = 3;                                       // reset index
  73             bitindex = 7;                                       // reset bit position
  74             logdata[logindex] = 0;                              // reset value of new logindex to 0
  75         }
  76     }
  77     else
  78     {
  79         bitcount++;
  80
  81         if (data == '1')
  82         {
  83             bit_set(logdata[logindex], bitindex);               // all logdata[logindex] on start = 0 --> only 1 must be set
  84         }
  85
  86         bitindex--;                                             // decrease bitposition, wirte from left to right
  87
  88         if (bitindex == -1)                                     // byte complete Bit 7->0 --> next one
  89         {
  90             bitindex = 7;
  91             logindex++;
  92
  93             if (logindex < loglen)
  94             {
  95                 logdata[logindex] = 0;                          // set next byte to 0
  96             }
  97         }
  98     }
  99 }
 100
 101 #endif //IRMP_EXT_LOGGING
 102
 103 #if defined(PIC_C18)
 104 static void
 105 dummy (void)
 106 {
 107   // Only to avoid C18 compiler error
 108 }
 109 #endif