I write a source code to test led and button driver. it's work with a loop but when add sd_app_evt_wait() to use low power mode of nRF52. I suppose that I forgot something but I can't find. Someone knows this issue ?
Thanks
My source code :
#include <stdbool.h>
#include <stdint.h>
#include "nrf_drv_gpiote.h"
#include "config/nrf_drv_config.h"
#include "bsp.h"
#include "app_timer.h"
#include "nrf_drv_clock.h"
#include "nordic_common.h"
#include "softdevice_handler.h"
#define GPIO_PIN_1 1
#define GPIO_PIN_2 2
#define GPIO_PIN_3 3
#define GPIO_PIN_4 4
#define GPIO_PIN_5 5
#define GPIO_PIN_6 6
#define GPIO_PIN_7 7
#define GPIO_PIN_8 8
#define GPIO_PIN_9 9
#define GPIO_PIN_10 10
#define GPIO_PIN_11 11
#define GPIO_PIN_12 12
#define GPIO_PIN_13 13
#define GPIO_PIN_14 14
#define GPIO_PIN_15 15
#define GPIO_PIN_16 16
#define GPIO_PIN_17 17
#define GPIO_PIN_18 18
#define GPIO_PIN_19 19
#define GPIO_PIN_20 20
#define APP_TIMER_PRESCALER 0 /**< Value of the RTC1 PRESCALER register. */
#define APP_TIMER_MAX_TIMERS 6 /**< Maximum number of simultaneously created timers. */
#define APP_TIMER_OP_QUEUE_SIZE 4
#define BUTTON_DETECTION_DELAY APP_TIMER_TICKS(50, APP_TIMER_PRESCALER) /**< Delay from a GPIOTE event until a button is reported as pushed (in number of timer ticks). */
/**@brief Function for doing power management.
*/
static void power_manage(void)
{
uint32_t err_code = sd_app_evt_wait();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling events from the button handler module.
*
* @param[in] pin_no The pin that the event applies to.
* @param[in] button_action The button action (press/release).
*/
static void button_event_handler(uint8_t pin_no, uint8_t button_action)
{
if (pin_no == GPIO_PIN_13)
{
if (button_action == APP_BUTTON_PUSH)
nrf_drv_gpiote_out_toggle(GPIO_PIN_17);
}
}
/**@brief Function for the Timer initialization.
*
* @details Initializes the timer module.
*/
static void timers_init(void)
{
// Initialize timer module, making it use the scheduler
APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, false);
}
/**@brief Function for initializing the button handler module.
*/
static void buttons_init(void)
{
uint32_t err_code;
//The array must be static because a pointer to it will be saved in the button handler module.
static app_button_cfg_t buttons[] =
{
{GPIO_PIN_13, false, BUTTON_PULL, button_event_handler}
};
err_code = app_button_init(buttons, sizeof(buttons) / sizeof(buttons[0]),
BUTTON_DETECTION_DELAY);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initialization oscillators.
*/
void clock_initialization()
{
/* Start 16 MHz crystal oscillator */
NRF_CLOCK->EVENTS_HFCLKSTARTED = 0;
NRF_CLOCK->TASKS_HFCLKSTART = 1;
/* Wait for the external oscillator to start up */
while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0)
{
// Do nothing.
}
/* Start low frequency crystal oscillator for app_timer(used by bsp)*/
NRF_CLOCK->LFCLKSRC = (CLOCK_LFCLKSRC_SRC_Xtal << CLOCK_LFCLKSRC_SRC_Pos);
NRF_CLOCK->EVENTS_LFCLKSTARTED = 0;
NRF_CLOCK->TASKS_LFCLKSTART = 1;
while (NRF_CLOCK->EVENTS_LFCLKSTARTED == 0)
{
// Do nothing.
}
}
/**
* @brief Function for application main entry.
*/
int main(void)
{
uint32_t err_code=0;
err_code = nrf_drv_clock_init();
APP_ERROR_CHECK(err_code);
nrf_clock_lf_cfg_t clock_lf_cfg = NRF_CLOCK_LFCLKSRC;
// Initialize the SoftDevice handler module.
SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL);
err_code = sd_softdevice_disable();
APP_ERROR_CHECK(err_code);
timers_init();
buttons_init();
//Clock Init
clock_initialization();
if(!nrf_drv_gpiote_is_init())
{
err_code = nrf_drv_gpiote_init();
}
nrf_drv_gpiote_out_config_t config_gpio_out = GPIOTE_CONFIG_OUT_SIMPLE(NRF_GPIOTE_INITIAL_VALUE_LOW);
config_gpio_out.init_state = NRF_GPIOTE_INITIAL_VALUE_LOW;
err_code = nrf_drv_gpiote_out_init(GPIO_PIN_17, &config_gpio_out);
err_code = app_button_enable();
APP_ERROR_CHECK(err_code);
//Enter main loop.
for (;; )
{
power_manage();
}
return (int)err_code;
}
/**
* @}
*/
