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