Method write

src/modules/ble_api/services/BLESerialService.cpp:96–100

size_t BLESerialService::println() { return println(""); }

size_t BLESerialService::write(uint8_t *str, size_t size) {
    serial_char->notify(str, size);
    vTaskDelay(pdMS_TO_TICKS(10));
    return size;
}

int BLESerialService::read() {
    if (!available()) return -1;