• TI Thinks Resolved

CCS/TMS320F28335: why printf affect serial port of microcontroller?

Prodigy 140 points

Replies: 3

Views: 72

Part Number: TMS320F28335

Tool/software: Code Composer Studio

I am debugging the software on F28335 using CCS 8.0 with XDS100V2.

The problem I found is  that the bits, RXERROR, RXRDY, FE, OE are all set to '1' in SCIB's register  SCIRXST after  function "printf" is called. How could this happen?

I can see the message sent from printf  in CCS's console, while SCIB is set to 38400 baud rate for serial communication in my program. thanks for help.