void onButtonA(MicroBitEvent)
{
if (advertising == 1) {
return;
}
startAdvertising();
}
ble_error_t Gap::startAdvertising(void)
{
ble_error_t rc;
if ((rc = startAdvertising(_advParams)) == BLE_ERROR_NONE) {
state.advertising = 1;
}
return rc;
}
int main()
{
// Initialise the micro:bit runtime.
uBit.init();
uBit.messageBus.listen(MICROBIT_ID_BUTTON_A, MICROBIT_BUTTON_EVT_CLICK, onButtonA);
uBit.messageBus.listen(MICROBIT_ID_BUTTON_B, MICROBIT_BUTTON_EVT_CLICK, onButtonB);
startAdvertising();
release_fiber();
}
void AppInit(sleep_state last_sleep_state)
{
/* set all PIOs to inputs and pull them down */
PioSetModes(0xFFFFFFFFUL, pio_mode_user);
PioSetDirs(0xFFFFFFFFUL, FALSE);
PioSetPullModes(0xFFFFFFFFUL, pio_mode_strong_pull_down);
/* disable wake up on UART RX */
SleepWakeOnUartRX(FALSE);
/* pull down the I2C lines */
PioSetI2CPullMode(pio_i2c_pull_mode_strong_pull_down);
/* Start advertising */
startAdvertising();
}
/**
* @brief Handle a GATT Server Event.
*
* @param [in] event
* @param [in] gatts_if
* @param [in] param
*
*/
void BLEServer::handleGATTServerEvent(
esp_gatts_cb_event_t event,
esp_gatt_if_t gatts_if,
esp_ble_gatts_cb_param_t* param) {
ESP_LOGD(LOG_TAG, ">> handleGATTServerEvent: %s",
BLEUtils::gattServerEventTypeToString(event).c_str());
// Invoke the handler for every Service we have.
m_serviceMap.handleGATTServerEvent(event, gatts_if, param);
switch(event) {
// ESP_GATTS_CONNECT_EVT
// connect:
// - uint16_t conn_id
// - esp_bd_addr_t remote_bda
// - bool is_connected
case ESP_GATTS_CONNECT_EVT: {
m_connId = param->connect.conn_id; // Save the connection id.
if (m_pServerCallbacks != nullptr) {
m_pServerCallbacks->onConnect(this);
}
m_connectedCount++;
break;
} // ESP_GATTS_CONNECT_EVT
// ESP_GATTS_REG_EVT
// reg:
// - esp_gatt_status_t status
// - uint16_t app_id
case ESP_GATTS_REG_EVT: {
m_gatts_if = gatts_if;
m_semaphoreRegisterAppEvt.give();
break;
} // ESP_GATTS_REG_EVT
// ESP_GATTS_CREATE_EVT
// Called when a new service is registered as having been created.
//
// create:
// * esp_gatt_status_t status
// * uint16_t service_handle
// * esp_gatt_srvc_id_t service_id
//
case ESP_GATTS_CREATE_EVT: {
BLEService* pService = m_serviceMap.getByUUID(param->create.service_id.id.uuid);
m_serviceMap.setByHandle(param->create.service_handle, pService);
//pService->setHandle(param->create.service_handle);
m_semaphoreCreateEvt.give();
break;
} // ESP_GATTS_CREATE_EVT
// ESP_GATTS_READ_EVT - A request to read the value of a characteristic has arrived.
//
// read:
// - uint16_t conn_id
// - uint32_t trans_id
// - esp_bd_addr_t bda
// - uint16_t handle
// - uint16_t offset
// - bool is_long
// - bool need_rsp
//
case ESP_GATTS_READ_EVT: {
break;
} // ESP_GATTS_READ_EVT
// ESP_GATTS_WRITE_EVT - A request to write the value of a characteristic has arrived.
//
// write:
// - uint16_t conn_id
// - uint16_t trans_id
// - esp_bd_addr_t bda
// - uint16_t handle
// - uint16_t offset
// - bool need_rsp
// - bool is_prep
// - uint16_t len
// - uint8_t *value
case ESP_GATTS_WRITE_EVT: {
break;
}
// ESP_GATTS_DISCONNECT_EVT
// If we receive a disconnect event then invoke the callback for disconnects (if one is present).
// we also want to start advertising again.
case ESP_GATTS_DISCONNECT_EVT: {
m_connectedCount--;
if (m_pServerCallbacks != nullptr) {
m_pServerCallbacks->onDisconnect(this);
}
startAdvertising();
break;
} // ESP_GATTS_DISCONNECT_EVT
// ESP_GATTS_ADD_CHAR_EVT - Indicate that a characteristic was added to the service.
// add_char:
// - esp_gatt_status_t status
// - uint16_t attr_handle
// - uint16_t service_handle
// - esp_bt_uuid_t char_uuid
case ESP_GATTS_ADD_CHAR_EVT: {
break;
} // ESP_GATTS_ADD_CHAR_EVT
default: {
break;
}
}
ESP_LOGD(LOG_TAG, "<< handleGATTServerEvent");
} // handleGATTServerEvent
/**
* @brief Handle a GATT Server Event.
*
* @param [in] event
* @param [in] gatts_if
* @param [in] param
*
*/
void BLEServer::handleGATTServerEvent(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t* param) {
ESP_LOGD(LOG_TAG, ">> handleGATTServerEvent: %s",
BLEUtils::gattServerEventTypeToString(event).c_str());
switch(event) {
// ESP_GATTS_ADD_CHAR_EVT - Indicate that a characteristic was added to the service.
// add_char:
// - esp_gatt_status_t status
// - uint16_t attr_handle
// - uint16_t service_handle
// - esp_bt_uuid_t char_uuid
//
case ESP_GATTS_ADD_CHAR_EVT: {
break;
} // ESP_GATTS_ADD_CHAR_EVT
case ESP_GATTS_MTU_EVT:
updatePeerMTU(param->mtu.conn_id, param->mtu.mtu);
break;
// ESP_GATTS_CONNECT_EVT
// connect:
// - uint16_t conn_id
// - esp_bd_addr_t remote_bda
//
case ESP_GATTS_CONNECT_EVT: {
m_connId = param->connect.conn_id;
addPeerDevice((void*)this, false, m_connId);
if (m_pServerCallbacks != nullptr) {
m_pServerCallbacks->onConnect(this);
m_pServerCallbacks->onConnect(this, param);
}
m_connectedCount++; // Increment the number of connected devices count.
break;
} // ESP_GATTS_CONNECT_EVT
// ESP_GATTS_CREATE_EVT
// Called when a new service is registered as having been created.
//
// create:
// * esp_gatt_status_t status
// * uint16_t service_handle
// * esp_gatt_srvc_id_t service_id
//
case ESP_GATTS_CREATE_EVT: {
BLEService* pService = m_serviceMap.getByUUID(param->create.service_id.id.uuid, param->create.service_id.id.inst_id); // <--- very big bug for multi services with the same uuid
m_serviceMap.setByHandle(param->create.service_handle, pService);
m_semaphoreCreateEvt.give();
break;
} // ESP_GATTS_CREATE_EVT
// ESP_GATTS_DISCONNECT_EVT
//
// disconnect
// - uint16_t conn_id
// - esp_bd_addr_t remote_bda
// - esp_gatt_conn_reason_t reason
//
// If we receive a disconnect event then invoke the callback for disconnects (if one is present).
// we also want to start advertising again.
case ESP_GATTS_DISCONNECT_EVT: {
m_connectedCount--; // Decrement the number of connected devices count.
if (m_pServerCallbacks != nullptr) { // If we have callbacks, call now.
m_pServerCallbacks->onDisconnect(this);
}
startAdvertising(); //- do this with some delay from the loop()
removePeerDevice(param->disconnect.conn_id, false);
break;
} // ESP_GATTS_DISCONNECT_EVT
// ESP_GATTS_READ_EVT - A request to read the value of a characteristic has arrived.
//
// read:
// - uint16_t conn_id
// - uint32_t trans_id
// - esp_bd_addr_t bda
// - uint16_t handle
// - uint16_t offset
// - bool is_long
// - bool need_rsp
//
case ESP_GATTS_READ_EVT: {
break;
} // ESP_GATTS_READ_EVT
// ESP_GATTS_REG_EVT
// reg:
// - esp_gatt_status_t status
// - uint16_t app_id
//
case ESP_GATTS_REG_EVT: {
m_gatts_if = gatts_if;
m_semaphoreRegisterAppEvt.give(); // Unlock the mutex waiting for the registration of the app.
break;
} // ESP_GATTS_REG_EVT
// ESP_GATTS_WRITE_EVT - A request to write the value of a characteristic has arrived.
//
// write:
// - uint16_t conn_id
// - uint16_t trans_id
// - esp_bd_addr_t bda
// - uint16_t handle
// - uint16_t offset
// - bool need_rsp
// - bool is_prep
// - uint16_t len
// - uint8_t* value
//
case ESP_GATTS_WRITE_EVT: {
break;
}
case ESP_GATTS_OPEN_EVT:
m_semaphoreOpenEvt.give(param->open.status);
break;
default:
break;
}
// Invoke the handler for every Service we have.
m_serviceMap.handleGATTServerEvent(event, gatts_if, param);
ESP_LOGD(LOG_TAG, "<< handleGATTServerEvent");
} // handleGATTServerEvent
