Nrf51 Fast GPIOTE + Ble

RE: Nrf51 Fast GPIOTE + Ble

Sigurd — Wed, 04 Jan 2017 11:58:13 GMT

What SDK are you using?

GPIOTE_IRQHandler() is already implemented in nrf_drv_gpiote, and you should not modify it.

You are calling button_handler() when pin 29 goes from low to high. What does button_handler do?

If you want high priority for the GPIOTE, this can be done in SDK 12 by changing GPIOTE_CONFIG_IRQ_PRIORITY to 1(nRF51). If you are using SDK 11, set the priority to APP_IRQ_PRIORITY_HIGH in nrf_drv_config.h

RE: Nrf51 Fast GPIOTE + Ble

Oguz Emre — Tue, 03 Jan 2017 13:32:15 GMT

Im using AC LAMB. I need zero crossing therefore I want gpiote. Help me please.

RE: Nrf51 Fast GPIOTE + Ble

Sigurd — Tue, 03 Jan 2017 12:22:37 GMT

Hi,

If your goal is to make a dimmer for a LED, I would recommend using PWM.

Using the Low-power PWM library, this can be done something like in the code snippet below, and then you can set the LED brightness using the function low_power_pwm_duty_set().

There is also a Low-Power PWM example in the SDK you can take a look at.

static low_power_pwm_t low_power_pwm_0;

static void pwm_init(void)
{
    uint32_t err_code;
    low_power_pwm_config_t low_power_pwm_config;

    APP_TIMER_DEF(lpp_timer_0);
    low_power_pwm_config.active_high = false;
    low_power_pwm_config.period = UINT8_MAX;
    low_power_pwm_config.bit_mask = BSP_LED_2_MASK;
    low_power_pwm_config.p_timer_id = &lpp_timer_0;

    err_code = low_power_pwm_init((&low_power_pwm_0), &low_power_pwm_config, NULL);
    APP_ERROR_CHECK(err_code);
    
    err_code = low_power_pwm_duty_set(&low_power_pwm_0, 20);
    APP_ERROR_CHECK(err_code);
    err_code = low_power_pwm_start((&low_power_pwm_0), low_power_pwm_0.bit_mask);
}