git.zerfleddert.de Git - rsbs2/blob - bmc/bmc.c

   1 #include <avr/io.h>
   2 #include <avr/sleep.h>
   3 #include <avr/interrupt.h>
   4 #include <stdio.h>
   5 #include "usart.h"
   6 #include "i2c.h"
   7 #include "bmc.h"
   8
   9 uint8_t ipmb_csum(unsigned char *buf, int len)
  10 {
  11         uint8_t csum = 0x00;
  12         int i;
  13
  14         for(i = 0; i < len; i++) {
  15                 csum += buf[i];
  16         }
  17
  18         return -csum;
  19 }
  20
  21 void decode_bmc_cmd(unsigned char *buf, int len)
  22 {
  23         int i;
  24
  25         printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
  26         printf("Connection Header:\n");
  27         printf("\trs Slave Addr.: 0x%02x\n", buf[0]);
  28         printf("\tnetFn: 0x%02x, LUN: 0x%02x\n", (buf[1]>>2)&0x3f, (buf[1] & 0x03));
  29         printf("\tChecksum: 0x%02x (%s)\n", buf[2],
  30                 (buf[2] == ipmb_csum(buf, 2)) ? "OK" : "Wrong");
  31         printf("Data:\n");
  32         printf("\trq Slave Addr.: 0x%02x\n", buf[3]);
  33         printf("\trqSeq: 0x%02x, rqLUN: 0x%02x\n", (buf[4]>>2)&0x3f, (buf[4] & 0x03));
  34         printf("\tcmd: 0x%02x\n", buf[5]);
  35         printf("\tData: ");
  36         for(i = 6; i < (len - 1); i++) {
  37                 printf("0x%02x ", buf[i]);
  38         }
  39         printf("\n");
  40         printf("\tChecksum: 0x%02x (%s)\n", buf[len-1],
  41                 (buf[len-1] == ipmb_csum(buf+3, len-4)) ? "OK" : "Wrong");
  42         printf("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n");
  43 }
  44
  45 int main(void)
  46 {
  47         DDRB = 0xff;
  48         PORTB = 0xff;
  49
  50         usart_init();
  51         printf("\n");
  52
  53         i2c_init();
  54
  55         printf("Waiting for I2C...\n");
  56
  57         sei();
  58
  59         while(1) {
  60 #if 1
  61                 sleep_mode();
  62 #endif
  63         }
  64
  65         return 0;
  66 }