Hi, another annoying question:
I have hardware setup needing asynch UART between a pic processor for data gathering, PC COM for configuration and a Fastrack GO RS232 for transmission. To avoid increasing circuit space I am using the same max232 converter to translate CMOS voltages for both the PC and Fastrack. Handshaking is dealt with by tying both CTS & RTS lines to the Fastrack high, and when the PIC is not running a program the connection is quite capable of sending messages originated in hyperterminal.
However when the PIC starts sending strings, communication is totally lost, and if I attach just the Fastrack and the PIC no messages are being sent and am unable to see Fastrack error output for debugging.
Is there anybody out there who has solved an issue like this before? I would be very greatful for ANY suggestions, I’m stuck in a rut of inserting ever increasing delays into the transmission program in the hope that the processor is outrunning the Fastrack, but without hyperterminal feedback I am blind to the problem.
Thanks for reading!