main.cpp

00001 #include "mbed.h"
00002 #include "ultrasonic.h"
00003 #include "ble/BLE.h"
00004 Serial pc(USBTX, USBRX);
00005 
00006 const static char     DEVICE_NAME[] = "EVA BRA TEMP";
00007  
00008  void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
00009 {
00010     BLE::Instance().gap().startAdvertising();
00011 }
00012 
00013 void onBleInitError(BLE &ble, ble_error_t error)
00014 {
00015     /* Avoid compiler warnings */
00016     (void) ble;
00017     (void) error;
00018     
00019     /* Initialization error handling should go here */
00020 }    
00021 
00022 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
00023 {
00024     BLE&        ble   = params->ble;
00025     ble_error_t error = params->error;
00026 
00027     if (error != BLE_ERROR_NONE) {
00028         /* In case of error, forward the error handling to onBleInitError */
00029         onBleInitError(ble, error);
00030         return;
00031     }
00032 
00033     /* Ensure that it is the default instance of BLE */
00034     if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
00035         return;
00036     }
00037  /* Set device name characteristic data */
00038     ble.gap().setDeviceName((const uint8_t *) DEVICE_NAME);
00039 
00040     /* Optional: add callback for disconnection */
00041     ble.gap().onDisconnection(disconnectionCallback);
00042     
00043     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::SERVICE_DATA, distance);
00044 
00045     /* Sacrifice 3B of 31B to Advertising Flags */
00046     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE );
00047     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00048  
00049     
00050     /* Set advertising interval. Longer interval == longer battery life */
00051     ble.gap().setAdvertisingInterval(100); /* 100ms */
00052 
00053     /* Start advertising */
00054     ble.gap().startAdvertising();
00055  
00056  }
00057 
00058  void dist(uint8_t distance)
00059 {
00060     //put code here to execute when the distance has changed
00061     pc.printf("Distance %d mm\r\n", distance);
00062 }
00063 
00064 ultrasonic mu(D6, D7, .1, 1, &dist);    //Set the trigger pin to D8 and the echo pin to D9
00065                                         //have updates every .1 seconds and a timeout after 1
00066                                         //second, and call dist when the distance changes
00067 
00068 int main()
00069 {
00070     BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE);
00071     ble.init(bleInitComplete);
00072     
00073     mu.startUpdates();//start measuring the distance
00074     while(1)
00075     {
00076         ble.waitForEvent();
00077         //Do something else here
00078         mu.checkDistance();     //call checkDistance() as much as possible, as this is where
00079                                 //the class checks if dist needs to be called.
00080     }
00081 }