Hello, I see few problems with the code. Firstly, there's no loop, so the application will end up in the default handler after hal_entry function returns. Later in the code, the data written has length 14 but the source array is only 2 bytes long. Similarly for reading the data. Please find a working sample project that implements UART on SCI3 (RS232/485/CAN connector) on HAL layer: (Please visit the site to view this file) Regards
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