Valentin Tanasa / Mbed 2 deprecated nRF51822_DataLogger_PowerImpulseCounter

App for BLE Nano to monitor the power consumption for a specific location, by intercepting the led flashes of a standard power meter. It counts and log the flashes for each second. It works with RedBear App for smart phone (Simple Chat App).

Dependencies:   BLE_API lib_mma8451q mbed nRF51822

Fork of nRF51822_DataLogger_with_Chat by Valentin Tanasa

Diff: main.cpp

Revision:
6:a574229993b8
Parent:
5:ee7e1a9e1985
Child:
7:609dff35b660
--- a/main.cpp	Thu Mar 31 15:23:00 2016 +0000
+++ b/main.cpp	Thu Mar 31 16:29:40 2016 +0000
@@ -45,6 +45,7 @@
 static const uint8_t uart_rx_uuid[]   = {0x71, 0x3D, 0, 2, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E};
 static const uint8_t uart_base_uuid_rev[] = {0x1E, 0x94, 0x8D, 0xF1, 0x48, 0x31, 0x94, 0xBA, 0x75, 0x4C, 0x3E, 0x50, 0, 0, 0x3D, 0x71};
 
+uint16_t txPower = 0xCD;
 
 uint8_t txPayload[TXRX_BUF_LEN] = {0,};
 uint8_t rxPayload[TXRX_BUF_LEN] = {0,};
@@ -72,17 +73,22 @@
 
 void WrittenHandler(const GattWriteCallbackParams *Handler)
 {   
-    uint8_t buf[TXRX_BUF_LEN];
+    uint8_t buf[TXRX_BUF_LEN+1];
     uint16_t bytesRead, index;
     
     if (Handler->handle == txCharacteristic.getValueAttribute().getHandle()) 
     {
-        ble.readCharacteristicValue(txCharacteristic.getValueAttribute().getHandle(), buf, &bytesRead);
+        ble.readCharacteristicValue(txCharacteristic.getValueAttribute().getHandle(), &buf[2], &bytesRead);
         memset(txPayload, 0, TXRX_BUF_LEN);
-        memcpy(txPayload, buf, TXRX_BUF_LEN);       
-        pc.printf("WriteHandler \r\n");
-        pc.printf("Length: %d \r\n", bytesRead);
-        pc.printf("Data: ");
+        memcpy(txPayload, &buf[2], TXRX_BUF_LEN);       
+        //echo back
+        buf[0]='R';
+        buf[1]=':';
+        ble.updateCharacteristicValue(rxCharacteristic.getValueAttribute().getHandle(), buf, bytesRead+2); 
+        // print on PC monitor
+        //pc.printf("WriteHandler \r\n");
+        //pc.printf("Length: %d \r\n", bytesRead);
+        pc.printf("R: ");
         for(index=0; index<bytesRead; index++)
         {
             pc.putc(txPayload[index]);        
@@ -97,11 +103,12 @@
     {
         rx_buf[rx_len++] = pc.getc();    
         if(rx_len>=20 || rx_buf[rx_len-1]=='\0' || rx_buf[rx_len-1]=='\n')
-        {
-            ble.updateCharacteristicValue(rxCharacteristic.getValueAttribute().getHandle(), rx_buf, rx_len); 
-            pc.printf("RecHandler \r\n");
-            pc.printf("Length: %d \r\n",rx_len);            
-            rx_len = 0;
+        {            
+            ble.updateCharacteristicValue(rxCharacteristic.getValueAttribute().getHandle(), rx_buf, rx_len);             
+            //pc.printf("Rec: Length: %d \r\n",rx_len);                        
+            rx_len = 2;
+            rx_buf[0]='S';
+            rx_buf[1]=':';
             break;
         }
     }
@@ -113,7 +120,7 @@
     ble.onDisconnection(disconnectionCallback);
     ble.onDataWritten(WrittenHandler);  
     
-    pc.baud(9600);
+    pc.baud(19200);
     pc.printf("SimpleChat Init \r\n");
     
     pc.attach( uartCB , pc.RxIrq);
@@ -121,9 +128,11 @@
     ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
     ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
     ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
-                                    (const uint8_t *)"Biscuit", sizeof("Biscuit") - 1);
+                                    (const uint8_t *)"MyBleVT", sizeof("MyBleVT") - 1);
     ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
                                     (const uint8_t *)uart_base_uuid_rev, sizeof(uart_base_uuid));
+    //ble.accumulateAdvertisingPayload(GapAdvertisingData::TX_POWER_LEVEL,(const uint8_t *)txPower, sizeof(txPower)); 
+    ble.setTxPower(txPower);                                                                       
     // 100ms; in multiples of 0.625ms. 
     ble.setAdvertisingInterval(160);