firmware/usbdrv/oddebug.c

   1 /* Name: oddebug.c
   2  * Project: AVR library
   3  * Author: Christian Starkjohann
   4  * Creation Date: 2005-01-16
   5  * Tabsize: 4
   6  * Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
   7  * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
   8  */
   9
  10 #include "oddebug.h"
  11
  12 #if DEBUG_LEVEL > 0
  13
  14 #warning "Never compile production devices with debugging enabled"
  15
  16 static void uartPutc(char c)
  17 {
  18     while(!(ODDBG_USR & (1 << ODDBG_UDRE)));    /* wait for data register empty */
  19     ODDBG_UDR = c;
  20 }
  21
  22 static uchar    hexAscii(uchar h)
  23 {
  24     h &= 0xf;
  25     if(h >= 10)
  26         h += 'a' - (uchar)10 - '0';
  27     h += '0';
  28     return h;
  29 }
  30
  31 static void printHex(uchar c)
  32 {
  33     uartPutc(hexAscii(c >> 4));
  34     uartPutc(hexAscii(c));
  35 }
  36
  37 void    odDebug(uchar prefix, uchar *data, uchar len)
  38 {
  39     printHex(prefix);
  40     uartPutc(':');
  41     while(len--){
  42         uartPutc(' ');
  43         printHex(*data++);
  44     }
  45     uartPutc('\r');
  46     uartPutc('\n');
  47 }
  48
  49 #endif