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#include "BatteryController.h"
#include <hal/nrf_gpio.h>
#include <libraries/log/nrf_log.h>
#include <algorithm>
using namespace Pinetime::Controllers;
void Battery::Init() {
nrf_gpio_cfg_input(chargingPin, (nrf_gpio_pin_pull_t)GPIO_PIN_CNF_PULL_Pullup);
nrf_gpio_cfg_input(powerPresentPin, (nrf_gpio_pin_pull_t)GPIO_PIN_CNF_PULL_Pullup);
nrfx_saadc_config_t adcConfig = NRFX_SAADC_DEFAULT_CONFIG;
nrfx_saadc_init(&adcConfig, SaadcEventHandler);
nrf_saadc_channel_config_t adcChannelConfig = {
.resistor_p = NRF_SAADC_RESISTOR_DISABLED,
.resistor_n = NRF_SAADC_RESISTOR_DISABLED,
.gain = NRF_SAADC_GAIN1_5,
.reference = NRF_SAADC_REFERENCE_INTERNAL,
.acq_time = NRF_SAADC_ACQTIME_3US,
.mode = NRF_SAADC_MODE_SINGLE_ENDED,
.burst = NRF_SAADC_BURST_DISABLED,
.pin_p = batteryVoltageAdcInput,
.pin_n = NRF_SAADC_INPUT_DISABLED
};
nrfx_saadc_channel_init(0, &adcChannelConfig);
}
void Battery::Update() {
isCharging = !nrf_gpio_pin_read(chargingPin);
isPowerPresent = !nrf_gpio_pin_read(powerPresentPin);
nrf_saadc_value_t value = 0;
nrfx_saadc_sample_convert(0, &value);
// see https://forum.pine64.org/showthread.php?tid=8147
voltage = (value * 2.0f) / (1024/3.0f);
float percentRemaining = ((voltage - 3.55f)*100.0f)*3.9f;
percentRemaining = std::max(percentRemaining, 0.0f);
percentRemaining = std::min(percentRemaining, 100.0f);
percentRemainingBuffer.insert(percentRemaining);
// NRF_LOG_INFO("BATTERY " NRF_LOG_FLOAT_MARKER " %% - " NRF_LOG_FLOAT_MARKER " v", NRF_LOG_FLOAT(percentRemaining), NRF_LOG_FLOAT(voltage));
// NRF_LOG_INFO("POWER Charging : %d - Power : %d", isCharging, isPowerPresent);
}
void Battery::SaadcEventHandler(nrfx_saadc_evt_t const * event) {
}
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