pxt-calliope/libs/bluetooth/BLEHF2Service.cpp
Peli de Halleux 7bc7d2f2ff
only notify needed ()
* only notify needed

* added docs
2018-10-30 19:57:01 -07:00

50 lines
1.9 KiB
C++

#include "MicroBitConfig.h"
#include "ble/UUID.h"
#include "BLEHF2Service.h"
#include "MicroBitEvent.h"
BLEHF2Service::BLEHF2Service(BLEDevice &_ble) :
ble(_ble)
{
GattCharacteristic txCharacteristic(BLEHF2TxCharacteristicUUID, (uint8_t *)&txCharacteristicMessage, 0,
sizeof(txCharacteristicMessage), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
// Initialise our characteristic values.
memset(&txCharacteristicMessage, 0, sizeof(txCharacteristicMessage));
// Set default security requirements
txCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL);
// setup GATT table
GattCharacteristic *characteristics[] = {&txCharacteristic};
GattService service(BLEHF2ServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *));
ble.addService(service);
// retreive handles
txCharacteristicHandle = txCharacteristic.getValueHandle();
// initialize data
ble.gattServer().write(txCharacteristicHandle,(uint8_t *)&txCharacteristicMessage, sizeof(txCharacteristicMessage));
}
void BLEHF2Service::sendSerial(const char *data, int len, bool isError) {
if (ble.getGapState().connected)
{
int32_t sent = 0;
while(sent < len) {
int32_t n = min(BLEHF2_DATA_LENGTH, len - sent);
txCharacteristicMessage.command = (isError ? BLEHF2_FLAG_SERIAL_OUT : BLEHF2_FLAG_SERIAL_ERR) | n;
memcpy(&txCharacteristicMessage.data, data + sent, n);
ble.gattServer().notify(txCharacteristicHandle,(uint8_t *)&txCharacteristicMessage, sizeof(txCharacteristicMessage));
sent += n;
}
}
}
const uint8_t BLEHF2ServiceUUID[] = {
0xb1,0x12,0xf5,0xe6,0x26,0x79,0x30,0xda,0xa2,0x6e,0x02,0x73,0xb6,0x04,0x38,0x49
};
const uint8_t BLEHF2TxCharacteristicUUID[] = {
0xb1,0x12,0xf5,0xe6,0x26,0x79,0x30,0xda,0xa2,0x6e,0x02,0x73,0xb6,0x04,0x38,0x4a
};