void TestDeviceCode()
{
char filename[200] = {0};
sprintf(filename,"/bin/udevcode");
unsigned char devicecode[16];
unsigned char number[4];
if(ReadBinFile(filename, UUID_MAGIC, devicecode, 16) > 0)
{
DebugPrint(0, "Read UUID ok, \n uuid :");
PrintHexLog(0, devicecode, 16);
}
else
{
DebugPrint(0, "Read UUID fail, ");
}
}
/**
* @brief 接收数据帧
* @param dest 目的地址
* @param buf 接收缓存区指针
* @param len 接收缓存区长度
* @param timeout 超时时间(100ms)
* @param 成功返回接收到的数据长度, 失败返回负数(参见错误码PLCERR_XXX)
*/
int Rs485BusRecvPkt(const plc_dest_t *dest, unsigned char *buf, int len, int timeout)
{
unsigned char state, recvlen, maxlen, cnt;
unsigned char *pbuf = Rs485BusBuffer;
unsigned char port;
int times;
AssertLog(len <= 0, "invalid len(%d)\n", len);
state = 0;
recvlen = 0;
maxlen = 0;
port = 1;
cnt = 0;
for(times=0; times<timeout; times++) {
while(Rs485Recv(port, pbuf, 1) > 0) {
PrintLog(LOGTYPE_DOWNLINK, "recv: %02X, %d\n", *pbuf, state);
switch(state) {
case 0:
if(0x68 == *pbuf) {
pbuf++;
recvlen = 1;
maxlen = 6;
cnt = 0;
state = 1;
}
break;
case 1:
pbuf++;
recvlen++;
cnt ++;
if(cnt >= maxlen){
state = 2;
}
break;
case 2:
if(0x68 != *pbuf){
pbuf = Rs485BusBuffer;
state = 0;
break;
}
pbuf++;
recvlen++;
state = 3;
break;
case 3:
pbuf++;
recvlen++;
state = 4;
break;
case 4:
recvlen++;
cnt = 0;
maxlen = *pbuf;
if(maxlen>128){
pbuf = Rs485BusBuffer;
state = 0;
break;
}
pbuf++;
maxlen += 2;
state = 5;
break;
case 5:
recvlen++;
cnt++;
if(cnt >= maxlen) {
if(0x16 == *pbuf){
goto mark_rcvend;
}
else{
pbuf = Rs485BusBuffer;
state = 0;
break;
}
}
pbuf++;
}
}
Sleep(10);
}
PrintLog(LOGTYPE_DOWNLINK, "Rs485 recv timeout(%d), time=%d00ms:\n", recvlen, times);
if(recvlen) PrintHexLog(LOGTYPE_DOWNLINK, Rs485BusBuffer, recvlen);
return PLCERR_TIMEOUT;
mark_rcvend:
PrintLog(LOGTYPE_DOWNLINK, "Rs485 recv(%d), time=%d00ms:\n", recvlen, times);
PrintHexLog(LOGTYPE_DOWNLINK, Rs485BusBuffer, recvlen);
smallcpy(buf, Rs485BusBuffer, recvlen);
return recvlen;
}
