src/components/brightness/BrightnessController.cpp


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#include "components/brightness/BrightnessController.h"
#include <hal/nrf_gpio.h>
#include "displayapp/screens/Symbols.h"
#include "nrf_pwm.h"
#include "drivers/PinMap.h"
using namespace Pinetime::Controllers;

void BrightnessController::Init() {
  nrf_gpio_cfg_output(PinMap::LcdBacklightLow);
  nrf_gpio_cfg_output(PinMap::LcdBacklightMedium);
  nrf_gpio_cfg_output(PinMap::LcdBacklightHigh);
  nrf_gpio_pin_set(PinMap::LcdBacklightLow);
  nrf_gpio_pin_clear(PinMap::LcdBacklightMedium);
  nrf_gpio_pin_clear(PinMap::LcdBacklightHigh);
  uint32_t out_pins[] = {PinMap::LcdBacklightHigh, PinMap::LcdBacklightMedium, NRF_PWM_PIN_NOT_CONNECTED, NRF_PWM_PIN_NOT_CONNECTED};
  nrf_pwm_pins_set(NRF_PWM0, out_pins);
  nrf_pwm_enable(NRF_PWM0);
  nrf_pwm_configure(NRF_PWM0, NRF_PWM_CLK_8MHz, NRF_PWM_MODE_UP, 10000);
  nrf_pwm_loop_set(NRF_PWM0, 0);
  nrf_pwm_decoder_set(NRF_PWM0, NRF_PWM_LOAD_COMMON, NRF_PWM_STEP_AUTO);
  static nrf_pwm_sequence_t seq;
  seq.values.p_common = pwmSequence;
  seq.length = 1;
  seq.repeats = 0;
  seq.end_delay = 0;
  nrf_pwm_sequence_set(NRF_PWM0, 0, &seq);
  nrf_pwm_task_trigger(NRF_PWM0, NRF_PWM_TASK_SEQSTART0);
}