I am using BF707 EZ-BRD, rev1.0, and CCES2.1.0.0 with default SPI device driver.
1. By default, the SPI device driver example is BF707_spi_flashreadback, which applies interrupt mode for SPI read/write. It works on EZKIT.
2. My task is to customize the example to DMA mode for SPI read/write access, however, the example resulted failure(not able to get the expected value read from SPI flash), and not able to do continuous SPI read/write.
I went through the driver code, but no help as the comments in driver library code have no adequate details to guide me out.
Attached is my test .c file.
Please note that:
if I change the code @ line 278
ADI_SPI_TRANSCEIVER Transceiver1 = {&Prologue1[0], 4, NULL, 0, &RxBuffer1[0], 2};
ADI_SPI_TRANSCEIVER Transceiver2 = {&Prologue2[0], 1, NULL, 0, &RxBuffer2[0], 3};
to
ADI_SPI_TRANSCEIVER Transceiver1 = {&Prologue1[0], 4, NULL, 0, &RxBuffer1[0], 4};
ADI_SPI_TRANSCEIVER Transceiver2 = {&Prologue2[0], 1, NULL, 0, &RxBuffer2[0], 4};
I can get the right value from SPI flash.
So what I need is a right way to use the API to get the wanted write/read sequences.
Done after tune the watermark with SPI driver API.