45 lines
1.6 KiB
C++
45 lines
1.6 KiB
C++
#include <drivers/include/nrfx_saadc.h>
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#include <hal/nrf_gpio.h>
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#include <libraries/log/nrf_log.h>
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#include "BatteryController.h"
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using namespace Pinetime::Controllers;
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void Battery::Init() {
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nrf_gpio_cfg_input(chargingPin, (nrf_gpio_pin_pull_t)GPIO_PIN_CNF_PULL_Pullup);
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nrf_gpio_cfg_input(powerPresentPin, (nrf_gpio_pin_pull_t)GPIO_PIN_CNF_PULL_Pullup);
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nrfx_saadc_config_t adcConfig = NRFX_SAADC_DEFAULT_CONFIG;
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nrfx_saadc_init(&adcConfig, SaadcEventHandler);
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nrf_saadc_channel_config_t adcChannelConfig = {
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.resistor_p = NRF_SAADC_RESISTOR_DISABLED,
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.resistor_n = NRF_SAADC_RESISTOR_DISABLED,
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.gain = NRF_SAADC_GAIN1_5,
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.reference = NRF_SAADC_REFERENCE_INTERNAL,
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.acq_time = NRF_SAADC_ACQTIME_3US,
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.mode = NRF_SAADC_MODE_SINGLE_ENDED,
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.burst = NRF_SAADC_BURST_DISABLED,
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.pin_p = batteryVoltageAdcInput,
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.pin_n = NRF_SAADC_INPUT_DISABLED
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};
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nrfx_saadc_channel_init(0, &adcChannelConfig);
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}
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void Battery::Update() {
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isCharging = !nrf_gpio_pin_read(chargingPin);
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isPowerPresent = !nrf_gpio_pin_read(powerPresentPin);
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nrf_saadc_value_t value = 0;
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nrfx_saadc_sample_convert(0, &value);
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// see https://forum.pine64.org/showthread.php?tid=8147
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voltage = (value * 2.0f) / (1024/3.0f);
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percentRemaining = ((voltage - 3.55)*100)*3.9;
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NRF_LOG_INFO("BATTERY " NRF_LOG_FLOAT_MARKER " %% - " NRF_LOG_FLOAT_MARKER " v", NRF_LOG_FLOAT(percentRemaining), NRF_LOG_FLOAT(voltage));
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NRF_LOG_INFO("POWER Charging : %d - Power : %d", isCharging, isPowerPresent);
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}
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void Battery::SaadcEventHandler(nrfx_saadc_evt_t const * event) {
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} |