basic led control implemented

main/ble.cpp

@@ -0,0 +1,69 @@
+#include "ble.h"
+
+// esp-idf includes
+#include <esp_log.h>
+
+// 3rdparty lib includes
+#include <NimBLEDevice.h>
+#include <ArduinoJson.h>
+
+// local includes
+#include "wifi.h"
+
+namespace {
+constexpr const char * const TAG = "BLE";
+
+BLEServer *server{};
+BLEService *service{};
+BLECharacteristic *characteristic{};
+
+class BleCallbacks : public NimBLECharacteristicCallbacks
+{
+public:
+    void onWrite(NimBLECharacteristic* pCharacteristic) override;
+};
+
+BleCallbacks bleCallbacks;
+}
+
+void ble_setup()
+{
+    BLEDevice::init(deviceName);
+
+    const auto serviceUuid{"26e743b6-8cf2-43b0-8bd0-f762a03e120e"};
+
+    server = BLEDevice::createServer();
+
+    service = server->createService(serviceUuid);
+
+    characteristic = service->createCharacteristic("87d4bcc1-233f-4317-87e9-02b93f60f27b", NIMBLE_PROPERTY::WRITE);
+    characteristic->setCallbacks(&bleCallbacks);
+
+    service->start();
+
+    BLEAdvertising *advertising = BLEDevice::getAdvertising();
+    advertising->addServiceUUID(serviceUuid);
+    advertising->setScanResponse(true);
+    BLEDevice::startAdvertising();
+}
+
+void ble_update()
+{
+
+}
+
+namespace {
+void BleCallbacks::onWrite(NimBLECharacteristic* pCharacteristic)
+{
+    const auto &val = pCharacteristic->getValue();
+
+    StaticJsonDocument<256> doc;
+    if (const auto error = deserializeJson(doc, val))
+    {
+        ESP_LOGW(TAG, "ignoring cmd with invalid json: %.*s %s", val.size(), val.data(), error.c_str());
+        return;
+    }
+
+    // TODO
+}
+}