Hello,
I am trying to bring up a similar (simpler) SPI master test program on 20735-B1, based on the SPI master example on 20719. My SDK version is 6.4.
Some code snippet:
wiced_hal_gpio_select_function(WICED_P38, WICED_SPI_1_MOSI);
wiced_hal_gpio_select_function(WICED_P07, WICED_SPI_1_CLK);
wiced_hal_pspi_reset(SPI1);
wiced_hal_pspi_init(
SPI1,
SPI_MASTER,
0,
spi_master_get_gpio_cfg(WICED_P07, WICED_P38, WICED_P06),
2.4*1000000,
SPI_MSB_FIRST,
SPI_SS_ACTIVE_LOW,
SPI_MODE_0,
WICED_P26
);
uint8_t to_send[10] = {0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55,0x55};
wiced_hal_pspi_tx_data(SPI1, 10, to_send);
I've hooked up CLK and MOSI to an oscillator.
The CLK signal is as expected. However the MOSI output is definitely not 0x55.
Picture of sending one byte 0x55:
As you can see in the above pictures, sending the same byte 0x55 results in different wave forms.
I wonder if there is any additional configurations needed for WICED_P38 port. Or I am missing some other software setups.
I've also tried an older revision of 20735 board using WICED 4.1. Same result.
