In the STM32F4 example, it says I have to enable or disable TRANSMITTER_BOARD, but I don't know where or how to do that.

[DBenn.1311]

The example I'm trying to work with comes from: STM32Cube_FW_F4_V1.25.0\Projects\STM32F4-Discovery\Examples\UART\UART_TwoBoards_ComPolling

To enable in the compiler means the board is the transmitter and disable means the board is the receiver. The compiler line is fixed though so I don't see how to add the enable or disable switch. Please let me know how, if you can.

Thank you for helping.

Dan

[DBenn.1311]

Nevermind. I figured out the solution to my problem.

In main.c

To enable just leave line 52 as #define TRANSMITTER_BOARD

To disable comment line 52 out

Connect an RS232 rig to the receive board: Tx to Tx and Rx to Rx and use a terminal program to monitor the communication from receive board to transmit board.

[waclawek.jan]

Thumbs up.

Can you please select your post as Best so that this thread is marked as resolved. Thanks.

JW