SPI communication using DPPI i wanna control cs pins as specific period. but cs pin is doesn't move at all.

[LEEJNOW]

/dts-v1/;
#include <nordic/nrf5340_cpuapp_qkaa.dtsi>
#include "bridge_wifi_nrf5340-pinctrl.dtsi"
#include "nrf5340_cpuapp_common.dtsi"

/ {
	model = "Nordic NRF7002 DK NRF5340 Application";
	compatible = "nordic,nrf7002-dk-nrf5340-cpuapp";

	chosen {
		zephyr,sram = &sram0_image;
		zephyr,flash = &flash0;
		zephyr,code-partition = &slot0_partition;
		zephyr,sram-secure-partition = &sram0_s;
		zephyr,sram-non-secure-partition = &sram0_ns;
		zephyr,wifi = &wlan0;
	};
};
#include "bridge_wifi_nrf5340-cpuapp_partitioning.dtsi"
#include "bridge_wifi_nrf5340-shared_sram.dtsi"

&qspi {
	nrf70: nrf7002@1 {
		compatible = "nordic,nrf7002-qspi";
		status = "okay";
		reg = <1>;
		qspi-frequency = <24000000>;
		qspi-quad-mode;

		#include "nrf70_common.dtsi"
		#include "nrf70_common_5g.dtsi"
	};
};

&spi3 {
	compatible = "nordic,nrf-spim";
	status = "okay";
	pinctrl-0 = <&spi3_default>;
	pinctrl-1 = <&spi3_sleep>;
	pinctrl-names = "default", "sleep";

/* ---------------- Child device: Intan RHS2116 ---------------- */
	intanrhs: intanrhs@0 {
		compatible = "vnd,spi-device";
		status = "okay"; 
		reg = <0>; /* CS#0 */
		spi-max-frequency = <8000000>; 
		duplex = <0>; /* SPI_FULL_DUPLEX[2] */
		frame-format = <0>; /* Motorola */
		label = "IntanRHS";
	};
};


&dppic {
    compatible = "nordic,nrf-dppic";
    status = "okay";
};

&timer1 {
	status = "okay";
};


&gpiote1 {
	status = "okay";
};

[LEEJNOW]

#include <zephyr/logging/log.h>

#include <haly/nrfy_gpio.h>

#include <zephyr/net/socket.h>

#include <zephyr/sys/fdtable.h>

#include <zephyr/device.h>

#include <zephyr/devicetree.h>

#include <zephyr/drivers/gpio.h>

#include <zephyr/drivers/spi.h>

#include <zephyr/kernel.h>

#include <hal/nrf_dppi.h>

#include <nrfx_dppi.h>

#include <nrfx_timer.h>

#include <nrfx_spim.h>

#include <nrfx_gpiote.h>

#include "Wifi_Stationing.h"

#include <unistd.h>

#include <errno.h>

#include <stdio.h>

#include <stdint.h>

#include <stdbool.h>

#include "UDP_Server_Ack.h"

#include "deviceInformation.h"

//  FIX 1: Use a unique name for the log module

LOG_MODULE_REGISTER(intan_spi, CONFIG_LOG_DEFAULT_LEVEL);

#define SPI_RHD_STACK_SIZE 7000

#define STM_PRIORITY 7

static struct k_thread intanspi_rhd;

K_THREAD_STACK_DEFINE(INTANSPI_RHD, SPI_RHD_STACK_SIZE);

// --- Peripheral Configuration ---

// TIMER

#define TIMER_TOGGLE_INSTANCE 0

#define TIMER_SPI_INSTANCE 1

#define TIMER_FREQUENCY NRF_TIMER_FREQ_8MHz

#define TIMER_PERIOD_MS 2

#define CS_ACTIVE_US 10 // How long CS is held low (in microseconds)

// Calculate timer ticks

#define TICKS_PER_MICROSECOND 1

#define PERIOD_TICKS (TIMER_PERIOD_MS * 10 * TICKS_PER_MICROSECOND)

#define CS_ACTIVE_TICKS (CS_ACTIVE_US * TICKS_PER_MICROSECOND)

#define DPPI_INSTANCE 0

// SPIM

#define SPI_INSTANCE 3

#define SPI_SCK_PIN NRF_GPIO_PIN_MAP(1,13)

#define SPI_MOSI_PIN NRF_GPIO_PIN_MAP(1,14)

#define SPI_MISO_PIN NRF_GPIO_PIN_MAP(1,15)

#define SPI_CS_PIN NRF_GPIO_PIN_MAP(1,12) // The pin we will control manually

#define SPI_FREQUENCY NRFX_MHZ_TO_HZ(8)

// Peripherals

static const nrfx_timer_t m_timer = NRFX_TIMER_INSTANCE(TIMER_SPI_INSTANCE);

static const nrfx_spim_t m_spim = NRFX_SPIM_INSTANCE(SPI_INSTANCE);

static const nrfx_gpiote_t m_gpiote = NRFX_GPIOTE_INSTANCE(1);

// DPPI Channels

static uint8_t m_dppi_ch_timer_to_spi;

static uint8_t m_dppi_ch_spi_to_cs_high;

// Buffers and flags

static uint8_t m_tx_buf[64] = {0x00, 0x01, 0x01, 0x01, 0x02, 0x01, 0x03, 0x01, 0x04, 0x01, 0x05, 0x01, 0x06, 0x01, 0x07, 0x01,

0x08, 0x01, 0x09, 0x01, 0x0a, 0x01, 0x0b, 0x01, 0x0c, 0x01, 0x0d, 0x01, 0x0e, 0x01, 0x0f, 0x01,

0x10, 0x01, 0x11, 0x01, 0x12, 0x01, 0x13, 0x01, 0x14, 0x01, 0x15, 0x01, 0x16, 0x01, 0x17, 0x01,

0x18, 0x01, 0x19, 0x01, 0x1a, 0x01, 0x1b, 0x01, 0x1c, 0x01, 0x1d, 0x01, 0x1e, 0x01, 0x1f, 0x01,};

static uint8_t m_rx_buf[64];

static volatile bool m_spi_xfer_done = false;

// --- Event Handler ---

void spim_event_handler(nrfx_spim_evt_t const *p_event, void *p_context)

{

if (p_event->type == NRFX_SPIM_EVENT_DONE) {

m_spi_xfer_done = true;

}

}

// --- Peripheral Initialization ---

static void gpiote_init(void)

{

nrfx_err_t err;

// nrfx_gpiote_init() is deprecated, use nrfx_gpiote_init_check and nrfx_gpiote_init

if (!nrfx_gpiote_init_check(&m_gpiote)) {

err = nrfx_gpiote_init(&m_gpiote, NRFX_GPIOTE_DEFAULT_CONFIG_IRQ_PRIORITY);

NRFX_ASSERT(err == NRFX_SUCCESS);

}

nrfx_gpiote_output_config_t output_config = {

.drive = NRF_GPIO_PIN_H0H1,

.input_connect = NRF_GPIO_PIN_INPUT_DISCONNECT,

.pull = NRF_GPIO_PIN_NOPULL,

};

// The task polarity is relative to the task execution, not the pin level.

// OUT task will set the pin to the state configured in .initial_value

// CLR task will set it to the opposite. SET task will set it to the same.

nrfx_gpiote_task_config_t task_config = {

.task_ch = 0, // A specific channel can be used if needed, 0 is fine for basic tasks

.polarity = GPIOTE_CONFIG_POLARITY_Toggle, // Not critical for OUT tasks, but good to define

.init_val = NRF_GPIOTE_INITIAL_VALUE_HIGH

};

err = nrfx_gpiote_output_configure(&m_gpiote, SPI_CS_PIN, &output_config, &task_config);

NRFX_ASSERT(err == NRFX_SUCCESS);

}

static void timer_init(void)

{

nrfx_err_t err;

nrfx_timer_config_t timer_config = NRFX_TIMER_DEFAULT_CONFIG(TIMER_FREQUENCY);

timer_config.bit_width = NRF_TIMER_BIT_WIDTH_32;

err = nrfx_timer_init(&m_timer, &timer_config, NULL); // No timer handler needed

NRFX_ASSERT(err == NRFX_SUCCESS);

nrfx_timer_extended_compare(&m_timer, NRF_TIMER_CC_CHANNEL0, PERIOD_TICKS, NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK, false);

nrfx_timer_compare(&m_timer, NRF_TIMER_CC_CHANNEL1, CS_ACTIVE_TICKS, false);

LOG_INF("TIMER initialized. Period: %d ms, CS Active: %d us", TIMER_PERIOD_MS, CS_ACTIVE_US);

}

static void spim_init(void)

{

nrfx_spim_config_t spim_config = NRFX_SPIM_DEFAULT_CONFIG(

SPI_SCK_PIN,

SPI_MOSI_PIN,

SPI_MISO_PIN,

NRF_SPIM_PIN_NOT_CONNECTED

);

spim_config.frequency = SPI_FREQUENCY;

//  FIX 4: Use the 'err' variable to make the code more robust.

nrfx_err_t err = nrfx_spim_init(&m_spim, &spim_config, spim_event_handler, NULL);

NRFX_ASSERT(err == NRFX_SUCCESS);

LOG_INF("SPIM%d initialized with manual CS.", SPI_INSTANCE);

}

static void dppi_init_and_connect(void)

{

nrfx_err_t err;

const nrfx_dppi_t m_dppi = NRFX_DPPI_INSTANCE(DPPI_INSTANCE);

// DPPI 채널 할당

err = nrfx_dppi_channel_alloc(&m_dppi, &m_dppi_ch_timer_to_spi);

NRFX_ASSERT(err == NRFX_SUCCESS);

err = nrfx_dppi_channel_alloc(&m_dppi, &m_dppi_ch_spi_to_cs_high);

NRFX_ASSERT(err == NRFX_SUCCESS);

uint32_t timer_compare0_evt = nrfx_timer_event_address_get(&m_timer, NRF_TIMER_EVENT_COMPARE0);

uint32_t spim_start_task = nrfx_spim_start_task_address_get(&m_spim);

uint32_t spim_end_evt = nrfx_spim_end_event_address_get(&m_spim);

uint32_t timer_compare1_evt = nrfx_timer_event_address_get(&m_timer, NRF_TIMER_EVENT_COMPARE1);

uint32_t gpiote_cs_set_task = nrfx_gpiote_set_task_address_get(&m_gpiote, SPI_CS_PIN);

uint32_t gpiote_cs_clr_task = nrfx_gpiote_clr_task_address_get(&m_gpiote, SPI_CS_PIN);

uint32_t gpiote_cs_out_task = nrfx_gpiote_out_task_address_get(&m_gpiote, SPI_CS_PIN);

NRF_DPPI_ENDPOINT_SETUP(spim_start_task, m_dppi_ch_timer_to_spi);

NRF_DPPI_ENDPOINT_SETUP(gpiote_cs_out_task, m_dppi_ch_timer_to_spi); // CS LOW

NRF_DPPI_ENDPOINT_SETUP(timer_compare0_evt, m_dppi_ch_timer_to_spi);

nrfx_dppi_channel_enable(&m_dppi, m_dppi_ch_timer_to_spi);

NRF_DPPI_ENDPOINT_SETUP(spim_end_evt , m_dppi_ch_spi_to_cs_high);

NRF_DPPI_ENDPOINT_SETUP(gpiote_cs_out_task, m_dppi_ch_spi_to_cs_high); // CS HIGH

nrfx_dppi_channel_enable(&m_dppi, m_dppi_ch_spi_to_cs_high);

LOG_INF("DPPI configured with corrected logic.");

}

// --- Main Thread ---

int spi_rhd(void)

{

LOG_INF("Starting Periodic SPI with robust state management...");

gpiote_init();

spim_init();

timer_init();

dppi_init_and_connect();

nrfx_spim_xfer_desc_t xfer_desc = NRFX_SPIM_XFER_TRX(m_tx_buf, sizeof(m_tx_buf), m_rx_buf, sizeof(m_rx_buf));

nrfx_spim_xfer(&m_spim, &xfer_desc, NRFX_SPIM_FLAG_HOLD_XFER);

nrfx_timer_enable(&m_timer);

while (1) {

while (!m_spi_xfer_done) {

k_sleep(K_MSEC(0.1));

}

m_spi_xfer_done = false;

nrfx_spim_xfer(&m_spim, &xfer_desc, NRFX_SPIM_FLAG_HOLD_XFER);

}

return 0;

}

void Intan_SPI_Init(void) {

k_thread_create(

&intanspi_rhd,

INTANSPI_RHD,

SPI_RHD_STACK_SIZE,

(k_thread_entry_t)spi_rhd,

NULL,

NULL,

NULL,

STM_PRIORITY,

0,

K_NO_WAIT

);

k_thread_name_set(&intanspi_rhd, "rhd_spi");

k_thread_start(&intanspi_rhd);

}