Serial Communication Issue on ChipKit PICMAX32

Created Mon, 28 Jan 2013 16:12:00 +0000 by workstation008

workstation008

Mon, 28 Jan 2013 16:12:00 +0000

I bought ChipKit PICMAX32 and Network Shield boards. The first program I wanted to try is the ASCII Table demo code in the example of MPIDE0023-windows20120903. Since the Serial is used for firmware uploading, I changed the "Serial" in demo code to be "Serial1" and use the Pin19(RX1) and Pin18(Tx1) as UART. I also used a Prolific USB/RS232 cable to connect to PC. However, when the program runs, it display wrong characters on the serial monitor. They are not what is supposed to be displayed on screen.

Does anybody have the same issue? THANKS!

workstation008

Mon, 28 Jan 2013 20:14:01 +0000

I found out the reason is the RS232/USB cable has a built-in RS232 Transceiver, while the ChipKit board does not have one. So, the either bypass the transceiver or use another transceiver might be good.