decode packets

[rsbs2] / bmc / bmc.c

diff --git a/bmc/bmc.c b/bmc/bmc.c
index c786032e092d235dec4240be704dae4eda4c34b6..4db28a6fab3cb2c9408a38f7b39dcdd6da8cdc55 100644 (file)
--- a/bmc/bmc.c
+++ b/bmc/bmc.c
@@ -1,32 +1,65 @@
 #include <avr/io.h>
+#include <avr/sleep.h>
 #include <avr/interrupt.h>
 #include <stdio.h>
 #include "usart.h"
 #include "i2c.h"
+#include "bmc.h"
 
-int main(void)
+uint8_t ipmb_csum(unsigned char *buf, int len)
 {
-       uint8_t pb = 0x00;
-       int8_t dir = 1;
-       volatile uint16_t i;
+       uint8_t csum = 0x00;
+       int i;
+
+       for(i = 0; i < len; i++) {
+               csum += buf[i];
+       }
+
+       return -csum;
+}
 
+void decode_bmc_cmd(unsigned char *buf, int len)
+{
+       int i;
+
+       printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
+       printf("Connection Header:\n");
+       printf("\trs Slave Addr.: 0x%02x\n", buf[0]);
+       printf("\tnetFn: 0x%02x, LUN: 0x%02x\n", (buf[1]>>2)&0x3f, (buf[1] & 0x03));
+       printf("\tChecksum: 0x%02x (%s)\n", buf[2],
+               (buf[2] == ipmb_csum(buf, 2)) ? "OK" : "Wrong");
+       printf("Data:\n");
+       printf("\trq Slave Addr.: 0x%02x\n", buf[3]);
+       printf("\trqSeq: 0x%02x, rqLUN: 0x%02x\n", (buf[4]>>2)&0x3f, (buf[4] & 0x03));
+       printf("\tcmd: 0x%02x\n", buf[5]);
+       printf("\tData: ");
+       for(i = 6; i < (len - 1); i++) {
+               printf("0x%02x ", buf[i]);
+       }
+       printf("\n");
+       printf("\tChecksum: 0x%02x (%s)\n", buf[len-1],
+               (buf[len-1] == ipmb_csum(buf+3, len-4)) ? "OK" : "Wrong");
+       printf("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n");
+}
+
+int main(void)
+{
        DDRB = 0xff;
+       PORTB = 0xff;
 
        usart_init();
+       printf("\n");
+
        i2c_init();
 
-       sei();
+       printf("Waiting for I2C...\n");
 
-       printf("Hallo!\n");
+       sei();
 
        while(1) {
-               pb += dir;
-               PORTB = pb;
-
-               for (i = 0; i < (pb<<5); i++) {}
-
-               if ((pb == 0) || (pb == 0xff))
-                       dir = -dir;
+#if 1
+               sleep_mode();
+#endif
        }
 
        return 0;