Implement battery measurement in BatteryController.

Update battery info on wake up (with button)

src/CMakeLists.txt

@@ -38,6 +38,7 @@ list(APPEND SOURCE_FILES
   drivers/SpiMaster.cpp
   Components/Gfx/Gfx.cpp
   BLE/BleManager.c
+  Components/Battery/BatteryController.cpp
 )
 
 set(INCLUDE_FILES
@@ -51,6 +52,7 @@ set(INCLUDE_FILES
   drivers/SpiMaster.h
   Components/Gfx/Gfx.h
   BLE/BleManager.h
+  Components/Battery/BatteryController.h
 )
 
 nRF5x_addExecutable(pinetime-app "${SOURCE_FILES}")

src/Components/Battery/BatteryController.cpp

@@ -0,0 +1,44 @@
+#include <drivers/include/nrfx_saadc.h>
+#include <hal/nrf_gpio.h>
+#include <libraries/log/nrf_log.h>
+#include "BatteryController.h"
+
+using namespace Pinetime::Controllers;
+
+void Battery::Init() {
+  nrf_gpio_cfg_input(12, (nrf_gpio_pin_pull_t)GPIO_PIN_CNF_PULL_Pullup);
+  nrf_gpio_cfg_input(19, (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      = (nrf_saadc_input_t)(SAADC_CH_PSELP_PSELP_AnalogInput7),
+          .pin_n      = NRF_SAADC_INPUT_DISABLED
+  };
+  nrfx_saadc_channel_init(0, &adcChannelConfig);
+}
+
+void Battery::Update() {
+  isCharging = !nrf_gpio_pin_read(12);
+  isPowerPresent = !nrf_gpio_pin_read(19);
+
+  nrf_saadc_value_t value = 0;
+  nrfx_saadc_sample_convert(0, &value);
+
+  voltage = (value * 2.0f) / (1024/3.0f);
+  percentRemaining = ((voltage - 3.55)*100)*3.9;
+
+  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) {
+
+}

src/Components/Battery/BatteryController.h

@@ -0,0 +1,24 @@
+#pragma once
+#include <drivers/include/nrfx_saadc.h>
+
+
+namespace Pinetime {
+  namespace Controllers {
+    class Battery {
+      public:
+        void Init();
+        void Update();
+        float PercentRemaining() const { return percentRemaining; }
+        float Voltage() const { return voltage; }
+        bool IsCharging() const { return isCharging; }
+        bool IsPowerPresent() const { return isPowerPresent; }
+
+      private:
+        static void SaadcEventHandler(nrfx_saadc_evt_t const * p_event);
+        float percentRemaining = 0.0f;
+        float voltage = 0.0f;
+        bool isCharging = false;
+        bool isPowerPresent = false;
+    };
+  }
+}

src/DisplayApp/DisplayApp.cpp

@@ -10,6 +10,10 @@
 
 using namespace Pinetime::Applications;
 
+DisplayApp::DisplayApp(Pinetime::Controllers::Battery &batteryController) : batteryController{batteryController} {
+  msgQueue = xQueueCreate(queueSize, itemSize);
+}
+
 void DisplayApp::Start() {
   if (pdPASS != xTaskCreate(DisplayApp::Process, "DisplayApp", 256, this, 0, &taskHandle))
     APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
@@ -61,6 +65,9 @@ void DisplayApp::InitHw() {
 
   x = 181;
   gfx->DrawChar(&largeFont, '0', &x, 78, 0xffff);
+
+  gfx->DrawString(10, 0, 0xffff, "BLE", &smallFont, false);
+  gfx->DrawString(20, 160, 0xffff, "FRIDAY 27 DEC 2019", &smallFont, false);
 }
 
 void DisplayApp::Refresh() {
@@ -116,9 +123,15 @@ void DisplayApp::SetTime(uint8_t minutes, uint8_t hours) {
 void DisplayApp::RunningState() {
   uint32_t systick_counter = nrf_rtc_counter_get(portNRF_RTC_REG);
 
-  gfx->DrawString(10, 0, 0xffff, "BLE", &smallFont, false);
+  char batteryChar[11];
-  gfx->DrawString((240-96), 0, 0xffff, "BAT: 58%", &smallFont, false);
+  uint16_t newBatteryValue = batteryController.PercentRemaining();
-  gfx->DrawString(20, 160, 0xffff, "FRIDAY 27 DEC 2019", &smallFont, false);
+  newBatteryValue = (newBatteryValue>100) ? 100 : newBatteryValue;
+  newBatteryValue = (newBatteryValue<0) ? 0 : newBatteryValue;
+  if(newBatteryValue != battery) {
+    battery = newBatteryValue;
+    sprintf(batteryChar, "BAT: %d%%", battery);
+    gfx->DrawString((240-108), 0, 0xffff, batteryChar, &smallFont, false);
+  }
 
   auto raw = systick_counter / 1000;
   auto currentDeltaSeconds = raw - deltaSeconds;
@@ -175,10 +188,6 @@ void DisplayApp::IdleState() {
 
 }
 
-DisplayApp::DisplayApp() {
-  msgQueue = xQueueCreate(queueSize, itemSize);
-}
-
 void DisplayApp::PushMessage(DisplayApp::Messages msg) {
   BaseType_t xHigherPriorityTaskWoken;
   xHigherPriorityTaskWoken = pdFALSE;

src/DisplayApp/DisplayApp.h

@@ -6,6 +6,7 @@
 #include <Components/Gfx/Gfx.h>
 #include <bits/unique_ptr.h>
 #include <queue.h>
+#include <Components/Battery/BatteryController.h>
 #include "lcdfont14.h"
 
 extern const FONT_INFO lCD_70ptFontInfo;
@@ -16,7 +17,7 @@ namespace Pinetime {
       public:
         enum class States {Idle, Running};
         enum class Messages : uint8_t {GoToSleep, GoToRunning} ;
-        DisplayApp();
+        DisplayApp(Pinetime::Controllers::Battery& batteryController);
         void Start();
 
         void Minutes(uint8_t m);
@@ -51,6 +52,9 @@ namespace Pinetime {
         static constexpr uint8_t queueSize = 10;
         static constexpr uint8_t itemSize = 1;
 
+        Pinetime::Controllers::Battery &batteryController;
+        uint16_t battery = 0;
+
     };
   }
 }

src/main.cpp

@@ -6,14 +6,12 @@
 #include <libraries/gpiote/app_gpiote.h>
 #include <DisplayApp/DisplayApp.h>
 #include <softdevice/common/nrf_sdh.h>
-
 #include <softdevice/common/nrf_sdh_freertos.h>
 #include <hal/nrf_rtc.h>
 #include <timers.h>
 #include <libraries/log/nrf_log.h>
-#include <drivers/include/nrfx_saadc.h>
-
 #include "BLE/BleManager.h"
+#include "Components/Battery/BatteryController.h"
 
 #if NRF_LOG_ENABLED
 #include "Logging/NrfLogger.h"
@@ -23,10 +21,11 @@ Pinetime::Logging::NrfLogger logger;
 Pinetime::Logging::DummyLogger logger;
 #endif
 
-Pinetime::Applications::DisplayApp displayApp;
+std::unique_ptr<Pinetime::Applications::DisplayApp> displayApp;
 TaskHandle_t systemThread;
 bool isSleeping = false;
 TimerHandle_t debounceTimer;
+Pinetime::Controllers::Battery batteryController;
 
 extern "C" {
   void vApplicationIdleHook() {
@@ -47,25 +46,24 @@ void nrfx_gpiote_evt_handler(nrfx_gpiote_pin_t pin, nrf_gpiote_polarity_t action
 void DebounceTimerCallback(TimerHandle_t xTimer) {
   xTimerStop(xTimer, 0);
   if(isSleeping) {
-    displayApp.PushMessage(Pinetime::Applications::DisplayApp::Messages::GoToRunning);
+    displayApp->PushMessage(Pinetime::Applications::DisplayApp::Messages::GoToRunning);
     isSleeping = false;
+    batteryController.Update();
   }
   else {
-    displayApp.PushMessage(Pinetime::Applications::DisplayApp::Messages::GoToSleep);
+    displayApp->PushMessage(Pinetime::Applications::DisplayApp::Messages::GoToSleep);
     isSleeping = true;
   }
 }
 
-void nrfx_saadc_event_handler(nrfx_saadc_evt_t const * p_event) {
-
-}
-
-
 void SystemTask(void *) {
   APP_GPIOTE_INIT(2);
   bool erase_bonds=false;
   nrf_sdh_freertos_init(ble_manager_start_advertising, &erase_bonds);
-  displayApp.Start();
+  displayApp->Start();
+
+  batteryController.Init();
+  batteryController.Update();
 
   debounceTimer = xTimerCreate ("debounceTimer", 200, pdFALSE, (void *) 0, DebounceTimerCallback);
 
@@ -82,69 +80,16 @@ void SystemTask(void *) {
 
   nrfx_gpiote_in_init(13, &pinConfig, nrfx_gpiote_evt_handler);
 
-  nrf_gpio_cfg_input(12, (nrf_gpio_pin_pull_t)GPIO_PIN_CNF_PULL_Pullup);
-  nrf_gpio_cfg_input(19, (nrf_gpio_pin_pull_t)GPIO_PIN_CNF_PULL_Pullup);
-
-  nrf_gpio_cfg_output(27);
-  nrf_gpio_pin_set(27);
-
-  nrfx_saadc_config_t adcConfig = NRFX_SAADC_DEFAULT_CONFIG;
-  nrfx_saadc_init(&adcConfig, nrfx_saadc_event_handler);
-  nrfx_err_t nrfx_saadc_calibrate_offset(void);
-
-  vTaskDelay(1000);
-
-  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      = (nrf_saadc_input_t)(SAADC_CH_PSELP_PSELP_AnalogInput7),
-    .pin_n      = NRF_SAADC_INPUT_DISABLED
-  };
-  nrfx_saadc_channel_init(0, &adcChannelConfig);
-
-  nrf_saadc_value_t value = 0;
-  nrfx_saadc_sample_convert(0, &value);
-
-  while(true) {
-    bool charge = nrf_gpio_pin_read(12);
-    bool power =  nrf_gpio_pin_read(19);
-
-    if(!charge) {
-      NRF_LOG_INFO("CHARGE ON");
-    } else {
-      NRF_LOG_INFO("CHARGE OFF");
-    }
-
-    if(!power) {
-      NRF_LOG_INFO("POWER ON");
-    } else {
-      NRF_LOG_INFO("POWER OFF");
-    }
-    nrf_saadc_value_t value = 0;
-
-    nrfx_saadc_sample_convert(0, &value);
-    float v = (value * 2.0f) / (1024/3.0f);
-    float percent = ((v - 3.55)*100)*3.9;
-    NRF_LOG_INFO(NRF_LOG_FLOAT_MARKER "v - " NRF_LOG_FLOAT_MARKER "%%", NRF_LOG_FLOAT(v), NRF_LOG_FLOAT(percent));
-
-
-    nrf_gpio_pin_toggle(27);
-    vTaskDelay(1000);
-  }
 
   vTaskSuspend(nullptr);
 }
 
 void OnNewTime(uint8_t minutes, uint8_t hours) {
-  displayApp.SetTime(minutes, hours);
+  displayApp->SetTime(minutes, hours);
 }
 
 int main(void) {
+  displayApp.reset(new Pinetime::Applications::DisplayApp(batteryController));
   logger.Init();
   nrf_drv_clock_init();