MSP430F5529: MSP430F5529 UART RX

Hi Henry,

Could you send out the UART configuration code for the MSP430 here? 

How often does it happens?

Is there any way to use CCS/IAR for debugging? Just add a break point in the UART interrupt routine. It can give us some clues on whether the MCU has received the data.

Best regards,

Cash Hao

Hi Cash,

The UART configuration code as below:

 #include <ti/drivers/UART.h>

UART_Params_init(&uart0_params);

    uart0_params.writeDataMode = UART_DATA_BINARY;

    uart0_params.readDataMode = UART_DATA_BINARY;

    uart0_params.readReturnMode = UART_RETURN_FULL;

    uart0_params.baudRate = 38400;

    uart0_params.readEcho = UART_ECHO_OFF;

    uart0_handle = UART_open(Board_MSP430_UART_A0, &uart0_params);

There is no CCS/IAR for debugging due to UART port is not enough in our application.

The issue occurs randomly, maybe few minutes or few days.

Thanks

Henry

Hi Henry,

It is hard to find the route cause without debugging. You can use the SBW connection (reset and test pins) for debugging. It is the same port to program your chip. 

You can also try lower the baudrate to 9600 for example to test with if you can not debug the code.

Best regards,

Cash Hao

If this was my system, this plot would tell me that the CPU is doing its job and something is preventing the command from triggering a response. Put a breakpoint in the reponse sending code and see if it is getting triggered. Are you using interrupts or polling?

Pare your software down to a small program that has the problem and post that so we can look at it. Often, the act of trimming it down uncovers the problem!

Hi Henry, I have the similar problems as you have, Could you please tell me how did you solve it ? Thank you very much.

Hi Kathy,

Our code is run on TI-RTOS. I find the task priority will affect UART. So I adjust UART task priority and create two tasks for UART function. One for uart received, the other is uart send.

Hi Zheng Wei,Thank you for your reply, I am not using TI-RTOS, But I still can try to adjust the priority of the UART. Thank you very much.