Thread: Problem with Serial I/O to RS-232 Port

In your code

PutSerialChar (rtxSpaFd, (char)RTX_115K_BAUD);
PutSerialChar (rtxSpaFd, (char)RTX_115K_BAUD);

Please show how RTX_115K_BAUD is defined.

Jim

#define RTX_115K_BAUD 0x85

So it is an unsigned char not a char. You should change your PutSerialChar to use an unsigned char.

Jim