Sleep Modes and Wakeup Through GPIO IRQ

RE: Sleep Modes and Wakeup Through GPIO IRQ

Einar Thorsrud — Tue, 29 Mar 2022 12:52:53 GMT

Hi,

[quote user="RixtronixLAB"]Will this function overwrite "bsp_button_is_pressed()" function ?[/quote]

The bsp_button_is_pressed() simply reads the state of a GPIO pin , in the end using nrf_gpio_pin_read(). So this cannot be "overwritten". But if you change the confguration of this pin, for instance making it an output in stead of an input, changing pull configuration or similar, then it will affect how you read it.

There are fundamental flaws about this code snippet, though, which are not directlyrelated to the question. You are making repeated calls to bsp_btn_ant_init(), but this function is intended to be called once, and any subsequent call will overwrite the previous configuration (it updates internal static variables so there is only one channel and channel type at a time).

PS: This is getting quite detailed and straying away from the original topic of this thread. Please make a new case for new questions in the future.

RE: Sleep Modes and Wakeup Through GPIO IRQ

RixtronixLAB — Tue, 29 Mar 2022 12:32:23 GMT

Hi Einar,

Thanks for the reply,

Will this function overwrite "bsp_button_is_pressed()" function ?

static void utils_setup(void)
{
    //ret_code_t err_code;
	  ret_code_t err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);
    //originally
    err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS ,
                        bsp_event_handler);
	  /*
	  err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS,   //bsp_button_event_handler at E:\nRF5_SDK_17.0.2_d674dde\components\libraries\bsp\bsp.c 24Mar22 Rixtronix LAB
                        bsp_button_event_handler);
	  */
    APP_ERROR_CHECK(err_code);

    err_code = nrf_pwr_mgmt_init();
    APP_ERROR_CHECK(err_code);
		
	    
	
    err_code = bsp_btn_ant_init(m_ant_hrm.channel_number, HRM_DISP_CHANNEL_TYPE);
    APP_ERROR_CHECK(err_code);

    //err_code = ant_state_indicator_init(m_ant_hrm.channel_number, HRM_DISP_CHANNEL_TYPE);
    APP_ERROR_CHECK(err_code);
	
	  err_code = bsp_btn_ant_init(m_ant_bsc.channel_number, BSC_DISP_CHANNEL_TYPE);
    APP_ERROR_CHECK(err_code);
		
		err_code = bsp_btn_ant_init(m_ant_bpwr.channel_number, BPWR_DISP_CHANNEL_TYPE);
    APP_ERROR_CHECK(err_code);
	
	  //err_code = ant_state_indicator_init(m_ant_bsc.channel_number, BSC_DISP_CHANNEL_TYPE);
    APP_ERROR_CHECK(err_code);
		NRF_LOG_INFO("utils_setup\r\n");
}
static void utils_setup(void)
{
    //ret_code_t err_code;
	  ret_code_t err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);
    //originally
    err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS ,
                        bsp_event_handler);
	  /*
	  err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS,   //bsp_button_event_handler at E:\nRF5_SDK_17.0.2_d674dde\components\libraries\bsp\bsp.c 24Mar22 Rixtronix LAB
                        bsp_button_event_handler);
	  */
    APP_ERROR_CHECK(err_code);

    err_code = nrf_pwr_mgmt_init();
    APP_ERROR_CHECK(err_code);
		
	    
	
    err_code = bsp_btn_ant_init(m_ant_hrm.channel_number, HRM_DISP_CHANNEL_TYPE);
    APP_ERROR_CHECK(err_code);

    //err_code = ant_state_indicator_init(m_ant_hrm.channel_number, HRM_DISP_CHANNEL_TYPE);
    APP_ERROR_CHECK(err_code);
	
	  err_code = bsp_btn_ant_init(m_ant_bsc.channel_number, BSC_DISP_CHANNEL_TYPE);
    APP_ERROR_CHECK(err_code);
		
		err_code = bsp_btn_ant_init(m_ant_bpwr.channel_number, BPWR_DISP_CHANNEL_TYPE);
    APP_ERROR_CHECK(err_code);
	
	  //err_code = ant_state_indicator_init(m_ant_bsc.channel_number, BSC_DISP_CHANNEL_TYPE);
    APP_ERROR_CHECK(err_code);
		NRF_LOG_INFO("utils_setup\r\n");
}

I put this function,

 	// Wake up button 28Mar22 Rixtronix LAB
    nrf_gpio_cfg_sense_input(BSP_BUTTON_3, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);

after

log_init(); //comment out for GPS test 26 Oct 21
    utils_setup(); //comment out for GPS test 26 Oct 21
	  
    softdevice_setup(); //comment out for GPS test 26 Oct 21

but I can't get a proper response,

BSP_BUTTON_3 is working well for shutdown but can not turn on

	 void bsp_event_handler(bsp_event_t event)
	 .
	 .
	 .
	 case BSP_EVENT_KEY_2:
					 //NRF_LOG_INFO("BSP_EVENT_KEY 2 PUSH \n");
				   if(button2_state)
										{
										
											 NRF_LOG_INFO("BSP_EVENT_KEY 2 PUSH OFF\n");
												button2_state = STATE2_OFF;  
										
										}
										else
										{
											  NRF_LOG_INFO("BSP_EVENT_KEY 2 PUSH ON\n");
												button2_state = STATE2_ON;
											
										}

at main :

if(button2_state==STATE2_OFF) //check button2 ON/OFF flag
{	
  ssd1306_Power_On();
	nrf_delay_ms(888);		
	nrf_pwr_mgmt_run(); //Enter System On sleep mode****Rixtronix LAB 28Mar22
	
}		 

if(button2_state==STATE2_ON) //check button2 ON/OFF flag
{	
  ssd1306_Power_Off();
	nrf_delay_ms(888);	
  ssd1306_displayOff();	
	nrf_delay_ms(888);	
	//nrf_pwr_mgmt_run(); //Enter System On sleep mode****Rixtronix LAB 28Mar22
	nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF);//Enter System Off sleep mode****Rixtronix LAB 28Mar22
	
}

Any clues ?

Regards,

Rixtronix LAB

RE: Sleep Modes and Wakeup Through GPIO IRQ

Einar Thorsrud — Tue, 29 Mar 2022 12:01:56 GMT

Hi,

[quote user="RixtronixLAB"]Does bsp_button_is_pressed() work with softdevice ?[/quote]

Yes.

[quote user="RixtronixLAB"]and will ant button initialization overwrite all the bsp init ?[/quote]

I am not entirely sure what you mean. Can you elaborate?

RE: Sleep Modes and Wakeup Through GPIO IRQ

RixtronixLAB — Tue, 29 Mar 2022 06:52:13 GMT

Hi Enar,

Does bsp_button_is_pressed() work with softdevice ?

and will ant button initialization overwrite all the bsp init ?

Regards,

Rixtronix LAB

RE: Sleep Modes and Wakeup Through GPIO IRQ

Einar Thorsrud — Mon, 28 Mar 2022 07:22:28 GMT

Hi,

Yes, nrf_gpio_cfg_sense_input() can be used together with the SoftDevice.

RE: Sleep Modes and Wakeup Through GPIO IRQ

RixtronixLAB — Mon, 28 Mar 2022 05:22:15 GMT

Hi Einar,

Does nrf_gpio_cfg_sense_input work with softdevice ?

Regards,

Rixtronix LAB

RE: Sleep Modes and Wakeup Through GPIO IRQ

Einar Thorsrud — Fri, 19 Feb 2016 12:37:53 GMT

How have you used it? You can verify that the above code works by running it on a nRF51 DK. You must of course adapt it to your application, but it shows the principle. Particularly you must substitute BSP_BUTTON_2 with whichever pin you want to use to wake up the chip.

If you cannot make it work and need more assistance you would be more likely to get good help if you describe in detail what you have done and how it fails.

RE: Sleep Modes and Wakeup Through GPIO IRQ

BHAGYESH — Fri, 19 Feb 2016 12:31:01 GMT

I used your settings but it's not working with my program. My controller still in sleep mode.

RE: Sleep Modes and Wakeup Through GPIO IRQ

Einar Thorsrud — Fri, 19 Feb 2016 09:34:07 GMT

This example (tested with SDK 10) demonstrates how you can use a GPIO to wake up a chip from system OFF mode. The key is to use pin sensing. This can be configured with nrf_gpio_cfg_sense_input().

#include <stdbool.h>
#include "nrf.h"
#include "nrf_drv_gpiote.h"
#include "app_error.h"
#include "boards.h"

static void gpio_init(void)
{
    ret_code_t err_code;

    // Configure output pin for LED
    err_code = nrf_drv_gpiote_init();
    APP_ERROR_CHECK(err_code);
    nrf_drv_gpiote_out_config_t out_config = GPIOTE_CONFIG_OUT_SIMPLE(false);
    err_code = nrf_drv_gpiote_out_init(BSP_LED_0, &out_config);
    APP_ERROR_CHECK(err_code);

    // Wake up button
    nrf_gpio_cfg_sense_input(BSP_BUTTON_2, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);
}


int main(void)
{
    gpio_init();

    while (true)
    {
        // Toggle LED (will continuously toggle while button is pressed, so it will appear dimmed)
        nrf_drv_gpiote_out_toggle(BSP_LED_0);
        
        // Go to system off
        NRF_POWER->SYSTEMOFF = 1; 
    }
}