Diff: main.cpp

Revision:

8:60ede963dfe2

Parent:

7:f6814152873c

Child:

9:b33f42191584

--- a/main.cpp	Mon Mar 09 15:25:43 2015 +0000
+++ b/main.cpp	Mon Mar 09 19:06:45 2015 +0000
@@ -2,50 +2,66 @@
 #include "BLEDevice.h"
 #include "CustomService.h"
 
-
-// BLE object
 BLEDevice ble;
-
-// LED object
 DigitalOut led(LED1);
 
 const static char     DEVICE_NAME[]        = "ChangeMe!!"; // change this
-static const uint16_t uuid16_list[]        = {0xFFFF}; //Custom UUID, FF is reserved for development
+static const uint16_t uuid16_list[]        = {0xFFFF}; //Custom UUID, FFFF is reserved for development
 
 // Set Up Characteristics
-static uint8_t readValue[1] = {0x00};
-GattCharacteristic readChar(0xAAAA /* read char UUID*/, readValue, sizeof(readValue), sizeof(readValue),
-                        GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
+static uint8_t readValue[10] = {0x00};
+GattCharacteristic readChar(0xA001 /* read char UUID*/, readValue, sizeof(readValue), sizeof(readValue),
+                            GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
 
-static uint8_t writeValue[1] = {0x00};
-GattCharacteristic writeChar(0xBBBB /*write char UUID*/, writeValue, sizeof(writeValue), sizeof(writeValue),
-                            GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
-
-GattCharacteristic *characteristics[] = {&readChar, &writeChar};
+static uint8_t writeValue[10] = {0x00};
+GattCharacteristic writeChar(0xA002 /*write char UUID*/, writeValue, sizeof(writeValue), sizeof(writeValue),
+                             GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
 
 // Set up custom service
-GattService        customService(0x221D /*Service UUID*/, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *));
+GattCharacteristic *characteristics[] = {&readChar, &writeChar};
+GattService        customService(0xA000 /*Service UUID*/, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *));
 
 
-// Restart advertising when phone app disconnects
+/*
+ *  Restart advertising when phone app disconnects
+*/ 
 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
 {
-    ble.startAdvertising(); // restart advertising
+    ble.startAdvertising(); 
 }
 
-// handle writes to writeCharacteristic
+/* 
+ *  handle writes to writeCharacteristic
+*/
 void writeCharCallback(const GattCharacteristicWriteCBParams *params)
 {
-    led = params->data[0];
-    printf("LED Written To, value=%x",params->data[0]);
-    // TODO: update the readChar value to match write char, or better yet give it an english value
-    // TODO: update with info from here : http://developer.mbed.org/forum/team-63-Bluetooth-Low-Energy-community/topic/5502/
+    // check to see what characteristic was written, by handle
+    if(params->charHandle == writeChar.getValueHandle()) {
+        // toggle LED if only 1 byte is written
+        if(params->len == 1) {
+            led = params->data[0];
+        }
+        // print the data if more than 1 byte is written
+        else {
+            for(int x=0; x < params->len; x++) {
+                printf("%x",params->data[x]);
+            }
+            printf("\n\r"); // print newline
+        }
+        // update the readChar with the value of writeChar
+        ble.updateCharacteristicValue(readChar.getValueHandle(),params->data,params->len);
+    }
 }
 
+/*
+ *  main loop
+*/ 
 int
 main(void)
 {
-    led = 1;    // turn LED off
+    /* initialize stuff */
+    printf("\n\r********* Starting Main Loop *********\n\r");
+    led = 1;    // turn LED off (led is inverted)
     ble.init();
     ble.onDisconnection(disconnectionCallback);
     ble.onDataWritten(writeCharCallback); //TODO: this is not correct, figure out correct syntax
@@ -56,17 +72,12 @@
     ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); // add name
     ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); // UUID's broadcast in advertising packet
     ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
-    
 
+    // add our custom service
     ble.addService(customService); // Add our custom service to device
 
     ble.startAdvertising(); // start advertising
     while (true) {
         ble.waitForEvent(); //Save power
     }
-    
-    
-    // TODO: impliment the rest of triggering for LED based on Write of characteristic.
-    // TODO: impliment a read characteristic that sends text back to app
-    // take a look at http://developer.mbed.org/teams/Bluetooth-Low-Energy/code/BLE_GroveColourSensor/file/000c8f8c7f03/main.cpp for inspiration.
-}
\ No newline at end of file
+}