83 lines
3 KiB
C++
83 lines
3 KiB
C++
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#include "HeartRateService.h"
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#include "components/heartrate/HeartRateController.h"
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#include "systemtask/SystemTask.h"
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using namespace Pinetime::Controllers;
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constexpr ble_uuid16_t HeartRateService::heartRateServiceUuid;
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constexpr ble_uuid16_t HeartRateService::heartRateMeasurementUuid;
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namespace {
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int HeartRateServiceServiceCallback(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg) {
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auto* heartRateService = static_cast<HeartRateService*>(arg);
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return heartRateService->OnHeartRateRequested(conn_handle, attr_handle, ctxt);
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}
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}
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// TODO Refactoring - remove dependency to SystemTask
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HeartRateService::HeartRateService(Pinetime::System::SystemTask &system, Controllers::HeartRateController& heartRateController) :
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system{system},
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heartRateController{heartRateController},
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characteristicDefinition{
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{
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.uuid = (ble_uuid_t *) &heartRateMeasurementUuid,
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.access_cb = HeartRateServiceServiceCallback,
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.arg = this,
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.flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_NOTIFY,
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.val_handle = &heartRateMeasurementHandle
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},
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{
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0
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}
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},
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serviceDefinition{
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{
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/* Device Information Service */
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.type = BLE_GATT_SVC_TYPE_PRIMARY,
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.uuid = (ble_uuid_t *) &heartRateServiceUuid,
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.characteristics = characteristicDefinition
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},
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{
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0
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},
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}{
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// TODO refactor to prevent this loop dependency (service depends on controller and controller depends on service)
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heartRateController.SetService(this);
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}
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void HeartRateService::Init() {
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int res = 0;
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res = ble_gatts_count_cfg(serviceDefinition);
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ASSERT(res == 0);
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res = ble_gatts_add_svcs(serviceDefinition);
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ASSERT(res == 0);
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}
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int HeartRateService::OnHeartRateRequested(uint16_t connectionHandle, uint16_t attributeHandle,
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ble_gatt_access_ctxt *context) {
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if(attributeHandle == heartRateMeasurementHandle) {
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NRF_LOG_INFO("BATTERY : handle = %d", heartRateMeasurementHandle);
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static uint8_t batteryValue = heartRateController.HeartRate();
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uint8_t buffer[2] = {0, heartRateController.HeartRate()}; // [0] = flags, [1] = hr value
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int res = os_mbuf_append(context->om, buffer, 2);
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return (res == 0) ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
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}
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return 0;
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}
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void HeartRateService::OnNewHeartRateValue(uint8_t heartRateValue) {
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uint8_t buffer[2] = {0, heartRateController.HeartRate()}; // [0] = flags, [1] = hr value
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auto *om = ble_hs_mbuf_from_flat(buffer, 2);
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uint16_t connectionHandle = system.nimble().connHandle();
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if (connectionHandle == 0 || connectionHandle == BLE_HS_CONN_HANDLE_NONE) {
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return;
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}
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ble_gattc_notify_custom(connectionHandle, heartRateMeasurementHandle, om);
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}
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