Merge branch 'develop' into fix_adc

src/components/battery/BatteryController.cpp

@@ -1,9 +1,7 @@
 #include "BatteryController.h"
 #include <hal/nrf_gpio.h>
 #include <nrfx_saadc.h>
-#include <libraries/log/nrf_log.h>
 #include <algorithm>
-#include <math.h>
 
 using namespace Pinetime::Controllers;
 
@@ -18,7 +16,6 @@ void Battery::Init() {
 }
 
 void Battery::Update() {
-
   isCharging = !nrf_gpio_pin_read(chargingPin);
   isPowerPresent = !nrf_gpio_pin_read(powerPresentPin);
 
@@ -32,13 +29,13 @@ void Battery::Update() {
   nrfx_saadc_sample();
 }
 
-void Battery::adcCallbackStatic(nrfx_saadc_evt_t const* event) {
+void Battery::AdcCallbackStatic(nrfx_saadc_evt_t const* event) {
   instance->SaadcEventHandler(event);
 }
 
 void Battery::SaadcInit() {
   nrfx_saadc_config_t adcConfig = NRFX_SAADC_DEFAULT_CONFIG;
-  APP_ERROR_CHECK(nrfx_saadc_init(&adcConfig, adcCallbackStatic));
+  APP_ERROR_CHECK(nrfx_saadc_init(&adcConfig, AdcCallbackStatic));
 
   nrf_saadc_channel_config_t adcChannelConfig = {.resistor_p = NRF_SAADC_RESISTOR_DISABLED,
                                                  .resistor_n = NRF_SAADC_RESISTOR_DISABLED,
@@ -54,7 +51,6 @@ void Battery::SaadcInit() {
 }
 
 void Battery::SaadcEventHandler(nrfx_saadc_evt_t const* p_event) {
-
   const uint16_t battery_max = 4180; // maximum voltage of battery ( max charging voltage is 4.21 )
   const uint16_t battery_min = 3200; // minimum voltage of battery before shutdown ( depends on the battery )
 
@@ -69,10 +65,13 @@ void Battery::SaadcEventHandler(nrfx_saadc_evt_t const* p_event) {
     // p_event->data.done.p_buffer[0] = (adc_voltage / reference_voltage) * 1024
     voltage = p_event->data.done.p_buffer[0] * 6000 / 1024;
 
-    percentRemaining = (voltage - battery_min) * 100 / (battery_max - battery_min);
-
-    percentRemaining = std::max(percentRemaining, 0);
-    percentRemaining = std::min(percentRemaining, 100);
+    if (voltage > battery_max) {
+      percentRemaining = 100;
+    } else if (voltage < battery_min) {
+      percentRemaining = 0;
+    } else {
+      percentRemaining = (voltage - battery_min) * 100 / (battery_max - battery_min);
+    }
 
     nrfx_saadc_uninit();
     isReading = false;

src/components/battery/BatteryController.h

@@ -14,7 +14,7 @@ namespace Pinetime {
       void Init();
       void Update();
 
-      int PercentRemaining() const {
+      uint8_t PercentRemaining() const {
         return percentRemaining;
       }
 
@@ -25,6 +25,7 @@ namespace Pinetime {
       bool IsCharging() const {
         return isCharging;
       }
+
       bool IsPowerPresent() const {
         return isPowerPresent;
       }
@@ -37,7 +38,7 @@ namespace Pinetime {
       static constexpr uint32_t powerPresentPin = 19;
       static constexpr nrf_saadc_input_t batteryVoltageAdcInput = NRF_SAADC_INPUT_AIN7;
       uint16_t voltage = 0;
-      int percentRemaining = -1;
+      uint8_t percentRemaining = 0;
 
       bool isCharging = false;
       bool isPowerPresent = false;
@@ -45,7 +46,7 @@ namespace Pinetime {
       void SaadcInit();
 
       void SaadcEventHandler(nrfx_saadc_evt_t const* p_event);
-      static void adcCallbackStatic(nrfx_saadc_evt_t const* event);
+      static void AdcCallbackStatic(nrfx_saadc_evt_t const* event);
 
       bool isReading = false;
     };