InfiniTime/src/components/ble/BatteryInformationService.cpp
James A. Jerkins 62dbcbfc95 Connect and bond with a passkey
This commit adds the following:
    Passkey pairing - passkey is displayed on watch
    Swipe down to clear passkey screen
    Connection encryption
    Connection bonding
    Automatic reconnects to a bonded peripheral
    Trusted device on Android

Note that persisting the bond between reboots is NOT included in
this commit. Therefore, rebooting the watch will cause reconnect failures.
You must delete the bond from the phone to reconnect/pair.
2021-12-09 21:14:16 +01:00

56 lines
2.3 KiB
C++

#include "components/ble/BatteryInformationService.h"
#include <nrf_log.h>
#include "components/battery/BatteryController.h"
using namespace Pinetime::Controllers;
constexpr ble_uuid16_t BatteryInformationService::batteryInformationServiceUuid;
constexpr ble_uuid16_t BatteryInformationService::batteryLevelUuid;
int BatteryInformationServiceCallback(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt* ctxt, void* arg) {
auto* batteryInformationService = static_cast<BatteryInformationService*>(arg);
return batteryInformationService->OnBatteryServiceRequested(conn_handle, attr_handle, ctxt);
}
BatteryInformationService::BatteryInformationService(Controllers::Battery& batteryController)
: batteryController {batteryController},
characteristicDefinition {{.uuid = &batteryLevelUuid.u,
.access_cb = BatteryInformationServiceCallback,
.arg = this,
.flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_READ_ENC | BLE_GATT_CHR_F_READ_AUTHEN | BLE_GATT_CHR_F_NOTIFY,
.val_handle = &batteryLevelHandle},
{0}},
serviceDefinition {
{/* Device Information Service */
.type = BLE_GATT_SVC_TYPE_PRIMARY,
.uuid = &batteryInformationServiceUuid.u,
.characteristics = characteristicDefinition},
{0},
} {
}
void BatteryInformationService::Init() {
int res = 0;
res = ble_gatts_count_cfg(serviceDefinition);
ASSERT(res == 0);
res = ble_gatts_add_svcs(serviceDefinition);
ASSERT(res == 0);
}
int BatteryInformationService::OnBatteryServiceRequested(uint16_t connectionHandle,
uint16_t attributeHandle,
ble_gatt_access_ctxt* context) {
if (attributeHandle == batteryLevelHandle) {
NRF_LOG_INFO("BATTERY : handle = %d", batteryLevelHandle);
uint8_t batteryValue = batteryController.PercentRemaining();
int res = os_mbuf_append(context->om, &batteryValue, 1);
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);
}