using nrf5340 and Zephyr OS , Is device binding and device tree the only way to use nrf5340's peripheral?

[zhouhaifang]

In a .c file  ,code like below  (build a image using nrf5340dk_cpuappns) :

#include "nrf_gpio.h"

#define SPIM2_CS NRF_GPIO_    PIN_MAP(0,15)
#define SPIM2_SDO NRF_GPIO_ PIN_MAP(0,18)
#define SPIM2_CLK NRF_GPIO     PIN_MAP(0,12)
#define SPIM2_SDI NRF_GPIO_   PIN_MAP(0,14)

static void ADS129x_GPIO_Init(void){

  nrf_gpio_cfg_output(SPIM2_CS);

  nrf_gpio_pin_set(SPIM2_CS);

}

static void ADS129x_SPIInit(void){

   nrf_spim_pins_set(NRF_SPIM2_NS,  SPIM2_CLK,  SPIM2_SDO,  SPIM2_SDI);
    nrf_spim_frequency_set(NRF_SPIM2_NS,  NRF_SPIM_FREQ_1M);
   nrf_spim_configure(NRF_SPIM2_NS,  NRF_SPIM_MODE_1,  NRF_SPIM_BIT_ORDER_MSB_FIRST);
   nrf_spim_enable(NRF_SPIM2_NS);

}

Can use nrf5340's peripheral SPIM2  like this way?

[Simon]

Yes, you can do this. Using lower layers may require more work, and you don't get all the advantages Zephyr comes with, but it is absolutely possible to use the functions in nrf_gpio.h and nrf_spim.h directly.

The nrfx layer is also an option (there is not an nrfx driver for GPIO, so you have to use nrf_gpio.h, like done here). You can take a look at the sample zephyr/samples/boards/nrf/nrfx to get an intuition on how to use the nrfx layer.

Best regards,

Simon