File content as of revision 5:0d9e292a9d06:

#include "NRFDevKit.h"

#define VBAT_MAX_IN_MV 3300

// constructor
NRFDevKit::NRFDevKit(Logger& logger) 
:  m_logger(logger),
   m_led1(LED1, 0) {
}

void NRFDevKit::blink1(void) {
		m_led1 = !m_led1;
}

uint8_t NRFDevKit::getBatteryLevel(void) {
  // Configure ADC
  NRF_ADC->CONFIG = (ADC_CONFIG_RES_8bit                        << ADC_CONFIG_RES_Pos) |
                    (ADC_CONFIG_INPSEL_SupplyOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos) |
                    (ADC_CONFIG_REFSEL_VBG                      << ADC_CONFIG_REFSEL_Pos) |
                    (ADC_CONFIG_PSEL_Disabled                   << ADC_CONFIG_PSEL_Pos) |
                    (ADC_CONFIG_EXTREFSEL_None                  << ADC_CONFIG_EXTREFSEL_Pos);

  NRF_ADC->EVENTS_END = 0;
  NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Enabled;

  NRF_ADC->EVENTS_END = 0;    // Stop any running conversions.
  NRF_ADC->TASKS_START = 1;

  while (!NRF_ADC->EVENTS_END) {
  }

  uint16_t vbg_in_mv = 1200;
  uint8_t adc_max = 255;
  uint16_t vbat_current_in_mv = (NRF_ADC->RESULT * 3 * vbg_in_mv) / adc_max;
    
  NRF_ADC->EVENTS_END     = 0;
  NRF_ADC->TASKS_STOP     = 1;

  return (uint8_t) ((vbat_current_in_mv * 100) / VBAT_MAX_IN_MV);
}

PinName NRFDevKit::getSCL(void) {
	return p6;
}
  
PinName NRFDevKit::getSDA(void) {
	return p5;
}

PinName NRFDevKit::getDataRdy(void) {
	return P0_15;
}