Hi all,
I need to use the SPI3M interface and following various example I implemented the following code on the nRF52840 with SDK 3.0.2
nrfx_err_t status;
(void)status;
#if defined(__ZEPHYR__)
IRQ_CONNECT(NRFX_IRQ_NUMBER_GET(NRF_SPIM_INST_GET(SPIM_INST_IDX)), IRQ_PRIO_LOWEST,
NRFX_SPIM_INST_HANDLER_GET(SPIM_INST_IDX), 0, 0);
#endif
PINCTRL_DT_DEFINE(SPI_NODE_RHS);
nrfx_spim_config_t spim_config = NRFX_SPIM_DEFAULT_CONFIG(
NRF_SPIM_PIN_NOT_CONNECTED,
NRF_SPIM_PIN_NOT_CONNECTED,
NRF_SPIM_PIN_NOT_CONNECTED,
NRF_SPIM_PIN_NOT_CONNECTED);
spim_config.frequency = MHZ(24);
spim_config.mode = NRF_SPIM_MODE_0;
spim_config.bit_order = NRF_SPIM_BIT_ORDER_MSB_FIRST;
spim_config.skip_gpio_cfg = true;
spim_config.skip_psel_cfg = true;
spim_config.ss_active_high = false;
status = pinctrl_apply_state(PINCTRL_DT_DEV_CONFIG_GET(SPI_NODE_RHS),
PINCTRL_STATE_DEFAULT);
if (status != 0)
{
LOG_ERR("Could not pinctrl_apply_state %X", status);
return;
}
/* Set initial state of SCK according to the SPI mode. */
u32_t sck_pin = nrf_spim_sck_pin_get(spim_inst.p_reg);
u32_t mosi_pin = nrf_spim_mosi_pin_get(spim_inst.p_reg);
u32_t miso_pin = nrf_spim_miso_pin_get(spim_inst.p_reg);
LOG_INF("SCK pin: %d, MOSI pin: %d, MISO pin: %d", sck_pin, mosi_pin, miso_pin);
if (sck_pin != NRF_SPIM_PIN_NOT_CONNECTED)
{
nrfy_gpio_pin_write(sck_pin, NRF_SPIM_MODE_0);
}
nrf_spim_csn_configure(spim_inst.p_reg, NRF_DT_GPIOS_TO_PSEL(SPI_NODE_RHS, cs_gpios), NRF_SPIM_CSN_POL_LOW, 2);
status = nrfx_spim_init(&spim_inst, &spim_config, NULL, NULL);
if (status != NRFX_SUCCESS)
{
LOG_ERR("Could not get spi_dev_rhs device - err %X", status);
return;
}
LOG_INF("Device spi_dev_rhs Correctly configured!");
Whenever I configure the SPI to work at 8 MHz I don't have any issue, but when I try the 24 MHz (which is the frequency I need since the external device has a maximum speed of 25 MHz), I get and error on the function "nrfx_spim_init" with code 0xBAD0004 and the NRFX_LOG explicitly says "NRFX_SPIM: Function: spim_configuration_verify, error code: NRFX_ERROR_INVALID_PARAM."
Any suggestion?
