example ble_app_blinky + external interrupt

[koldybin]

Hello,

I'm trying to modify example ble_app_blinky from SDK17.0.0. I need external interrupt. But when I try to integrate two functions "static void gpio_init(void)" and "void in_pin_handler()" from example peripheral\pin_change_int into the examples\ble_peripheral\ble_app_blinky, I get a message

<error> app: Fatal error <warning> app: System reset

But if I integrate the code from example pin_change_int into the example ble_app_beacon, the interrupts work without a problem.

What is the source of the problem?

Thanks in advance

SDK_17.0.0_9d13099, nRF52832

[koldybin]

koldybin said:

But if I integrate the code from example pin_change_int into the example ble_app_beacon, the interrupts work without a problem.

So I have integrated the two functions for the external interrupt in the example ble_app_beacon.

//****************************************************************************// 
// EXT.INTERRUPT GPIOTE
//****************************************************************************//
#include "nrf_drv_gpiote.h"
#define AS_WAKE                   24
#ifdef BSP_LED_1
    #define PIN_OUT BSP_LED_1
#endif
#ifndef PIN_OUT
    #error "Please indicate output pin"
#endif

void in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
    nrf_drv_gpiote_out_toggle(PIN_OUT);
    NRF_LOG_INFO("test %d: %d\n", (int)pin, (int)action); 
}
/**
 * @brief Function for configuring: PIN_IN pin for input, PIN_OUT pin for output,
 * and configures GPIOTE to give an interrupt on pin change.
 */
static void gpio_init(void)
{
    ret_code_t err_code;

    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(PIN_OUT, &out_config);
    APP_ERROR_CHECK(err_code);

    //nrf_drv_gpiote_in_config_t in_config = GPIOTE_CONFIG_IN_SENSE_TOGGLE(true);
    nrf_drv_gpiote_in_config_t in_config = GPIOTE_CONFIG_IN_SENSE_LOTOHI(true);
    in_config.pull = NRF_GPIO_PIN_PULLUP;

    err_code = nrf_drv_gpiote_in_init(AS_WAKE, &in_config, in_pin_handler);
    APP_ERROR_CHECK(err_code);

    nrf_drv_gpiote_in_event_enable(AS_WAKE, true);
}


//****************************************************************************// 
// SPI FUNCTIONS
//****************************************************************************//
/**
 * @brief SPI user event handler.
 * @param event
 */
void spi_event_handler(nrf_drv_spi_evt_t const * p_event,
                       void *                    p_context)
{
    spi_xfer_done = true;
    //NRF_LOG_INFO("Transfer completed.");
    /*
    if (rx_spi_buf[0] != 0)
    {
        NRF_LOG_INFO(" Received: %02x,%02x,%02x,%02x,%02x",m_rx_buf[0],m_rx_buf[1],m_rx_buf[2],m_rx_buf[3],m_rx_buf[4]);
        NRF_LOG_HEXDUMP_INFO(m_rx_buf, strlen((const char *)m_rx_buf));
    }
    */
}

It works perfectly. But power consumption has increased to 246 uA. Original example ble_app_beacon without external interrupt has power consumption up to 10uA between advertising. If I call the function gpio_init (), I get idle power consumption up to 250 uA. How can I reduce the current?

Thanks in advance

[Marjeris Romero]

Hi,

If you are pulling a GPIO pin up to 3V you will get a power consumption of 3V/13kOhm =~ 230mA extra.