Part Number: TMS570LS1227 Tool/software: Code Composer Studio The product uses the chip of TMS570LS1227 to communicate with other MCU through serial port, 115200 baud rate. It can send data by polling mode and run for more than ten days without any problem. Later, there is no waveform on 570TX-line. RX can receive data normally, and the other serial port of the board can output log normally. There is no way to simulate the dormancy function. From the log, we can see that all tasks of the 570 Freertos system are running normally and there is no crash. That is to say, from the log, the sending data program is normally executed without jamming, but there is no data level change on the chip TX pin. Do you have any good ways to sort out this problem? Do you have any errors in sending serial ports of this chip that will lead to this problem? Or which register error will cause this problem, there is no way to think about it now.
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