we found the following comment in the file “software/TuyaOS/vendor/t2/beken_os/beken378/driver/spi/spi_master_bk7231n_new.c”: // 全双工收发接口，也可仅发送或仅接收 //存在问题，收发同时时，接收会丢掉一个字节，在2M频率下 int bk_spi_master_dma_xfer(struct spi_message *spi_msg) This function is call by tkl_spi_transfer(SPI_ID, spi_send_buffer, ...

thanks very much for your propose. It was a little confusing. But we have found a solution, The program is working but in hardware it does NOT work, because the Chip-Select Pin does not work correct. could you please give some advise for us, thank you / spi init / STATIC TUYA_SPI_BASE_CFG_T spi_cfg ...

the SPI communications “hangs” randomly. Please find attached the analysis of the problem and the modified tuya_app_main.c from the quickstart demo. can you check this on a T2 Demo Board and can you run the spi in a Loop for a few minutes at least and with the function “tkl_spi_transfer(SPI_ID, spi_...