Initial tutorial commit

gem-remotes-esp32/src/main.rs

@@ -0,0 +1,81 @@
+
+
+use esp32_nimble::{enums::*, uuid128, BLEAdvertisementData, BLEDevice, NimbleProperties};
+use esp_idf_hal::delay::FreeRtos;
+use esp_idf_sys as _;
+
+fn main() {
+    esp_idf_sys::link_patches();
+
+    // Bind the log crate to the ESP Logging facilities
+    esp_idf_svc::log::EspLogger::initialize_default();
+
+    // Take ownership of device
+    let ble_device = BLEDevice::take();
+
+    // Obtain handle for peripheral advertiser
+    let ble_advertiser = ble_device.get_advertising();
+
+    // Configure Device Security
+    ble_device
+        .security()
+        .set_auth(AuthReq::all())
+        .set_passkey(123456)
+        .set_io_cap(SecurityIOCap::DisplayOnly)
+        .resolve_rpa();
+
+    // Obtain handle for server
+    let server = ble_device.get_server();
+
+    // Define server connect behaviour
+    server.on_connect(|server, clntdesc| {
+        // Print connected client data
+        println!("{:?}", clntdesc);
+        // Update connection parameters
+        server
+            .update_conn_params(clntdesc.conn_handle(), 24, 48, 0, 60)
+            .unwrap();
+    });
+
+    // Define server disconnect behaviour
+    server.on_disconnect(|_desc, _reason| {
+        println!("Disconnected, back to advertising");
+    });
+
+    // Create a service with custom UUID
+    let my_service = server.create_service(uuid128!("9b574847-f706-436c-bed7-fc01eb0965c1"));
+
+    // Create a characteristic to associate with created service
+    let my_service_characteristic = my_service.lock().create_characteristic(
+        uuid128!("681285a6-247f-48c6-80ad-68c3dce18585"),
+        NimbleProperties::READ | NimbleProperties::READ_ENC,
+    );
+
+    // Modify characteristic value
+    my_service_characteristic.lock().set_value(b"Start Value");
+
+    // Configure Advertiser Data
+    ble_advertiser
+        .lock()
+        .set_data(
+            BLEAdvertisementData::new()
+                .name("ESP32 Server")
+                .add_service_uuid(uuid128!("9b574847-f706-436c-bed7-fc01eb0965c1")),
+        )
+        .unwrap();
+
+    // Start Advertising
+    ble_advertiser.lock().start().unwrap();
+
+    // (Optional) Print dump of local GATT table
+    // server.ble_gatts_show_local();
+
+    // Init a value to pass to characteristic
+    let mut val = 0;
+
+    loop {
+        FreeRtos::delay_ms(1000);
+        my_service_characteristic.lock().set_value(&[val]).notify();
+        val = val.wrapping_add(1);
+    }
+}