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Send BLE notifications as text

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This commit is contained in:
Sybren A. Stüvel 2026-03-14 19:57:01 +01:00
parent f3443ab8f8
commit 8e493f4e99
1 changed files with 7 additions and 0 deletions
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7
src/helpers/esp32/BLELogInterface.h
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@ -68,6 +68,13 @@ public:
BLEService* service = _server->createService(NUS_SERVICE_UUID);
_tx_char = service->createCharacteristic(NUS_TX_UUID, BLECharacteristic::PROPERTY_NOTIFY);
_tx_char->addDescriptor(new BLE2902());
// Characteristic Presentation Format (0x2904): declare value as UTF-8 string
// Format: format(1) exponent(1) unit(2) namespace(1) description(2)
static const uint8_t utf8_format[] = { 0x19, 0x00, 0x00, 0x27, 0x01, 0x00, 0x00 };
BLEDescriptor* pFormat = new BLEDescriptor((uint16_t)0x2904);
pFormat->setValue(const_cast<uint8_t*>(utf8_format), sizeof(utf8_format));
_tx_char->addDescriptor(pFormat);
service->start();
BLEAdvertising* adv = BLEDevice::getAdvertising();