static void hfclk_stop(void)
{
#ifndef SOFTDEVICE_PRESENT
nrf_clock_task_trigger(NRF_CLOCK_TASK_HFCLKSTOP);
while (nrf_clock_hf_is_running(NRF_CLOCK_HF_SRC_HIGH_ACCURACY));
#else
UNUSED_VARIABLE(sd_clock_hfclk_release());
#endif
}
uint32_t GetAdcValue(void)
{
NRF_ADC->EVENTS_END = ADC_BUSY;
while (ADC_IDLE == NRF_ADC->EVENTS_END);
uint32_t uRet = NRF_ADC->RESULT & ADC_RESULT_RESULT_Msk;
NRF_ADC->TASKS_STOP = 1;
NRF_ADC->EVENTS_END = 0;
//Release the external crystal
sd_clock_hfclk_release();
return uRet;
}
static void hfclk_stop(void)
{
#ifdef SOFTDEVICE_PRESENT
if (softdevice_handler_is_enabled())
{
(void)sd_clock_hfclk_release();
return;
}
#endif // SOFTDEVICE_PRESENT
nrf_clock_task_trigger(NRF_CLOCK_TASK_HFCLKSTOP);
while (nrf_clock_hf_is_running(NRF_CLOCK_HFCLK_HIGH_ACCURACY))
{}
m_clock_cb.hfclk_on = false;
}
/**
* @brief ADC interrupt handler.
*/
static void adc_event_handler(nrf_drv_adc_evt_t const * p_event)
{
uint32_t err_code;
uint16_t adc_sum_value = 0;
uint16_t adc_average_value;
uint16_t adc_result_millivolts;
uint8_t adc_result_percent;
sd_clock_hfclk_release(); //Release the external crystal
adc_event_counter++;
NRF_LOG_INFO(" ADC event counter: %d\r\n", adc_event_counter);
if (p_event->type == NRF_DRV_ADC_EVT_DONE)
{
uint32_t i;
for (i = 0; i < p_event->data.done.size; i++)
{
NRF_LOG_INFO("Sample value %d: %d\r\n", i+1, p_event->data.done.p_buffer[i]);
adc_sum_value += p_event->data.done.p_buffer[i]; //Sum all values in ADC buffer
}
adc_average_value = adc_sum_value / p_event->data.done.size; //Calculate average value from all samples in the ADC buffer
NRF_LOG_INFO("Average ADC value: %d\r\n", adc_average_value);
adc_result_millivolts = ADC_RESULT_IN_MILLI_VOLTS(adc_average_value); //Transform the average ADC value into millivolts value
NRF_LOG_INFO("ADC result in millivolts: %d\r\n", adc_result_millivolts);
adc_result_percent = battery_level_in_percent(adc_result_millivolts); //Transform the millivolts value into battery level percent.
NRF_LOG_INFO("ADC result in percent: %d\r\n", adc_result_percent);
//Send the battery level over BLE
err_code = ble_bas_battery_level_update(&m_bas, adc_result_percent); //Send the battery level over BLE
if ((err_code != NRF_SUCCESS) &&
(err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != BLE_ERROR_NO_TX_PACKETS) &&
(err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING))
{
APP_ERROR_HANDLER(err_code); //Assert on error
}
}
}
