BTLE example for a CJMCU-8223 (NRF51822+Lis3dh). Also includes an OLED display. Further details on ioprog.com

Dependencies:   mbed BLE_API nRF51822

Revision:
0:8fa1c7356f71
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/accelService.h	Wed Jun 24 11:37:11 2020 +0000
@@ -0,0 +1,66 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __BLE_ACCEL_SERVICE_H__
+#define __BLE_ACCEL_SERVICE_H__
+#include <mbed.h>
+#include <lis3dh.h>
+lis3dh Lis3dh;
+class accelService {
+public:
+    const static uint16_t ACCEL_SERVICE_UUID = 0xA012;
+    const static uint16_t ACCEL_X_CHARACTERISTIC_UUID = 0xA013;
+    const static uint16_t ACCEL_Y_CHARACTERISTIC_UUID = 0xA014;
+    const static uint16_t ACCEL_Z_CHARACTERISTIC_UUID = 0xA015;
+
+    accelService(BLEDevice &_ble, int16_t initialValueForACCELCharacteristic) :
+        ble(_ble), AccelX(ACCEL_X_CHARACTERISTIC_UUID, &initialValueForACCELCharacteristic),AccelY(ACCEL_Y_CHARACTERISTIC_UUID, &initialValueForACCELCharacteristic),AccelZ(ACCEL_Z_CHARACTERISTIC_UUID, &initialValueForACCELCharacteristic)
+    {
+        GattCharacteristic *charTable[] = {&AccelX,&AccelY,&AccelZ};
+        GattService         AccelService(ACCEL_SERVICE_UUID, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
+        ble.addService(AccelService);
+        Lis3dh.begin();
+    }
+
+    GattAttribute::Handle_t getValueHandle() const {
+        return AccelX.getValueHandle();
+    }
+    void updateAccelX(uint16_t newValue) {
+        ble.gattServer().write(AccelX.getValueHandle(), (uint8_t *)&newValue, sizeof(uint16_t));
+    }
+    void updateAccelY(uint16_t newValue) {
+        ble.gattServer().write(AccelY.getValueHandle(), (uint8_t *)&newValue, sizeof(uint16_t));
+    }
+    void updateAccelZ(uint16_t newValue) {
+        ble.gattServer().write(AccelZ.getValueHandle(), (uint8_t *)&newValue, sizeof(uint16_t));
+    }
+    void poll()
+    {                
+        int X,Y,Z;
+        Lis3dh.read(X,Y,Z);        
+        updateAccelX(X);
+        updateAccelY(Y);
+        updateAccelZ(Z);        
+        
+    }
+private:
+    BLEDevice &ble;
+    ReadOnlyGattCharacteristic<int16_t>  AccelX;
+    ReadOnlyGattCharacteristic<int16_t>  AccelY;
+    ReadOnlyGattCharacteristic<int16_t>  AccelZ;
+};
+
+#endif /* #ifndef __BLE_ACCEL_SERVICE_H__ */