Data configuration in TMS570LS3137 SPI transmission

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Data configuration in TMS570LS3137 SPI transmission [Copy link]

The above picture is a SPI test program I wrote. The purpose is to use SPI to send ID read commands to 10 M25P64flash chips, and then receive these IDs back through the SPI bus. The chips selected gioA and gioB for a total of 10 interfaces. The spiTransmitAndReceiveData() function in spi.c was called for sending and receiving. The program ultimately failed to achieve the intended function. During the single-step debugging process, it was found that the program was stuck in the spiTransmitAndReceiveData() function while((spi->FLG & 0x00000100U) != 0x00000100U) { } /* Wait */ I think the possible reason is that there is an error in setting dataconfig_t, but I don't know the specific meaning of the four values of dataconfig1_t, so I don't know how to set it correctly. Please help me solve it.

zyr3360

This statement refers to the 9th bit of SPIFLG, TXNTFLG0, which is the buffer. If there is no number, wait.