Hi,
i am trying to use SPI on the SN8000xUFL platform.
If I initialize the SPI with "SPI_NO_DMA" bit set, everything works as expected and I can see SPI transfers on the oscilloscope.
If I set the "SPI_USE_DMA" there are not transfers.
The code is pretty straightforward, I found it in one of the examples:
wiced_spi_device_t spi = {
.port = WICED_SPI_1,
.chip_select = WICED_GPIO_23,
.speed = 1500000,
.mode = (SPI_CLOCK_RISING_EDGE | SPI_CLOCK_IDLE_LOW | SPI_USE_DMA | SPI_MSB_FIRST),
.bits = 8
};
wiced_spi_init(&spi);
wiced_spi_message_segment_t segments[1];
uint8_t out[16];
uint8_t in[16];
segments[0].tx_buffer = out;
segments[0].length = 16;
segments[0].rx_buffer = in;
while(1){
// change the resistance on this channel from min to max:
wiced_spi_transfer(&spi, segments, 1);
}
Is there something I have missed or an extra peripheral I forgot to configure?
