CCF_100/InfiniTime
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Notify battery level every 10 minutes when connected to a BLE host.

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Refactor battery percent : only use uint8_t to store the battery % remaining.
This commit is contained in:
Jean-François Milants
2021-07-11 16:55:06 +02:00
parent 6a91b83b12
commit e21f6a7f41
17 changed files with 71 additions and 68 deletions
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13
src/components/battery/BatteryController.cpp
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@@ -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);
@@ -33,13 +30,13 @@ 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,
@@ -55,7 +52,6 @@ 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 )
@@ -69,13 +65,10 @@ void Battery::SaadcEventHandler(nrfx_saadc_evt_t const* p_event) {
// reference_voltage is 0.6V
// 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);
percentRemainingBuffer.insert(percentRemaining);
percentRemainingBuffer.Insert(percentRemaining);
samples++;
if (samples > percentRemainingSamples) {

18
src/components/battery/BatteryController.h
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@@ -19,7 +19,7 @@ namespace Pinetime {
insert member function overwrites the next data to the current
HEAD and moves the HEAD to the newly inserted value.
*/
void insert(const int num) {
void Insert(const uint8_t num) {
head %= cap;
arr[head++] = num;
if (sz != cap) {
@@ -27,13 +27,13 @@ namespace Pinetime {
}
}
int GetAverage() const {
uint8_t GetAverage() const {
int sum = std::accumulate(arr.begin(), arr.end(), 0);
return (sum / sz);
return static_cast<uint8_t>(sum / sz);
}
private:
std::array<int, N> arr; /**< internal array used to store the values*/
std::array<uint8_t, N> arr; /**< internal array used to store the values*/
uint8_t sz; /**< The current size of the array.*/
uint8_t cap; /**< Total capacity of the CircBuffer.*/
uint8_t head; /**< The current head of the CircBuffer*/
@@ -46,8 +46,11 @@ namespace Pinetime {
void Init();
void Update();
int PercentRemaining() const {
return percentRemainingBuffer.GetAverage();
uint8_t PercentRemaining() const {
auto avg = percentRemainingBuffer.GetAverage();
avg = std::min(avg, static_cast<uint8_t>(100));
avg = std::max(avg, static_cast<uint8_t>(0));
return avg;
}
uint16_t Voltage() const {
@@ -57,6 +60,7 @@ namespace Pinetime {
bool IsCharging() const {
return isCharging;
}
bool IsPowerPresent() const {
return isPowerPresent;
}
@@ -80,7 +84,7 @@ 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;
uint8_t samples = 0;

8
src/components/ble/BatteryInformationService.cpp
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@@ -17,7 +17,7 @@ BatteryInformationService::BatteryInformationService(Controllers::Battery& batte
characteristicDefinition {{.uuid = (ble_uuid_t*) &batteryLevelUuid,
.access_cb = BatteryInformationServiceCallback,
.arg = this,
.flags = BLE_GATT_CHR_F_READ,
.flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_NOTIFY,
.val_handle = &batteryLevelHandle},
{0}},
serviceDefinition {
@@ -48,4 +48,8 @@ int BatteryInformationService::OnBatteryServiceRequested(uint16_t connectionHand
return (res == 0) ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
}
return 0;
}
}
void BatteryInformationService::NotifyBatteryLevel(uint16_t connectionHandle, uint8_t level) {
auto* om = ble_hs_mbuf_from_flat(&level, 1);
ble_gattc_notify_custom(connectionHandle, batteryLevelHandle, om);
}

2
src/components/ble/BatteryInformationService.h
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@@ -17,7 +17,7 @@ namespace Pinetime {
void Init();
int OnBatteryServiceRequested(uint16_t connectionHandle, uint16_t attributeHandle, ble_gatt_access_ctxt* context);
void NotifyBatteryLevel(uint16_t connectionHandle, uint8_t level);
private:
Controllers::Battery& batteryController;
static constexpr uint16_t batteryInformationServiceId {0x180F};

6
src/components/ble/NimbleController.cpp
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@@ -235,3 +235,9 @@ void NimbleController::StartDiscovery() {
uint16_t NimbleController::connHandle() {
return connectionHandle;
}
void NimbleController::NotifyBatteryLevel(uint8_t level) {
if(connectionHandle != BLE_HS_CONN_HANDLE_NONE) {
batteryInformationService.NotifyBatteryLevel(connectionHandle, level);
}
}

3
src/components/ble/NimbleController.h
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@@ -70,6 +70,7 @@ namespace Pinetime {
};
uint16_t connHandle();
void NotifyBatteryLevel(uint8_t level);
private:
static constexpr const char* deviceName = "InfiniTime";
@@ -92,7 +93,7 @@ namespace Pinetime {
HeartRateService heartRateService;
uint8_t addrType; // 1 = Random, 0 = PUBLIC
uint16_t connectionHandle = 0;
uint16_t connectionHandle = BLE_HS_CONN_HANDLE_NONE;
ble_uuid128_t dfuServiceUuid {
.u {.type = BLE_UUID_TYPE_128},