main.cpp

00001 /*
00002  
00003 Copyright (c) 2012-2014 RedBearLab
00004  
00005 Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
00006 and associated documentation files (the "Software"), to deal in the Software without restriction, 
00007 including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
00008 and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 
00009 subject to the following conditions:
00010 The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
00011  
00012 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
00013 INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
00014 PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
00015 FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
00016 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00017  
00018 */
00019  
00020 /*
00021  *    The application works with the BlueJelly.js
00022  *
00023  *    http://jellyware.jp/kurage/
00024  *    https://github.com/electricbaka/bluejelly
00025  *
00026  */
00027  
00028 //======================================================================
00029 //Grobal
00030 //====================================================================== 
00031 //------------------------------------------------------------
00032 //Include Header Files
00033 //------------------------------------------------------------ 
00034 #include "mbed.h"
00035 #include "ble/BLE.h"
00036  
00037  
00038 //------------------------------------------------------------
00039 //Definition
00040 //------------------------------------------------------------ 
00041 #define TXRX_BUF_LEN 20                     //max 20[byte]
00042 #define DEVICE_LOCAL_NAME "BlueJelly"     
00043 #define ADVERTISING_INTERVAL 160            //160 * 0.625[ms] = 100[ms] 
00044 #define TICKER_TIME 1000                    //1000[us] = 1[ms]
00045 #define DIGITAL_OUT_PIN P0_9
00046 #define ANALOG_IN_PIN1 P0_4
00047  
00048 //HeartRate
00049 int timer_num = 0;
00050 int threshold_v = 650;
00051 int threshold_t = 300;  
00052 
00053  
00054 //------------------------------------------------------------
00055 //Object generation
00056 //------------------------------------------------------------ 
00057 BLE blenano;
00058 DigitalOut      LED_SET(DIGITAL_OUT_PIN);
00059 AnalogIn        ANALOG1(ANALOG_IN_PIN1);
00060  
00061  
00062 //------------------------------------------------------------
00063 //Service & Characteristic Setting
00064 //------------------------------------------------------------ 
00065 //Service UUID
00066 static const uint8_t base_uuid[] = { 0x71, 0x3D, 0x00, 0x00, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E } ;
00067  
00068 //Characteristic UUID
00069 static const uint8_t tx_uuid[]   = { 0x71, 0x3D, 0x00, 0x03, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E } ;
00070 static const uint8_t rx_uuid[]   = { 0x71, 0x3D, 0x00, 0x02, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E } ;
00071  
00072 //Characteristic Value
00073 uint8_t txPayload[TXRX_BUF_LEN] = {0,};
00074 uint8_t rxPayload[TXRX_BUF_LEN] = {0,};
00075  
00076 //Characteristic Property Setting etc
00077 GattCharacteristic  txCharacteristic (tx_uuid, txPayload, 1, TXRX_BUF_LEN, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
00078 GattCharacteristic  rxCharacteristic (rx_uuid, rxPayload, 1, TXRX_BUF_LEN, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY| GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
00079 GattCharacteristic *myChars[] = {&txCharacteristic, &rxCharacteristic};
00080  
00081 //Service Setting
00082 GattService         myService(base_uuid, myChars, sizeof(myChars) / sizeof(GattCharacteristic *));
00083  
00084  
00085 //======================================================================
00086 //onDisconnection
00087 //======================================================================
00088 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
00089 {
00090     blenano.startAdvertising();
00091 }
00092  
00093  
00094 //======================================================================
00095 //onDataWritten
00096 //======================================================================
00097 void WrittenHandler(const GattWriteCallbackParams *Handler)
00098 {   
00099     uint8_t buf[TXRX_BUF_LEN];
00100     uint16_t bytesRead;
00101     
00102     if (Handler->handle == txCharacteristic.getValueAttribute().getHandle()) 
00103     {
00104         blenano.readCharacteristicValue(txCharacteristic.getValueAttribute().getHandle(), buf, &bytesRead);
00105         memset(txPayload, 0, TXRX_BUF_LEN);
00106         memcpy(txPayload, buf, TXRX_BUF_LEN); 
00107        
00108         if(buf[0] == 1)
00109             LED_SET = 1;
00110         else
00111             LED_SET = 0;
00112     }
00113 }
00114  
00115  
00116 //======================================================================
00117 //onTimeout
00118 //======================================================================
00119 void m_status_check_handle(void)
00120 {   
00121     timer_num ++;
00122 }
00123  
00124  
00125 //======================================================================
00126 //convert reverse UUID
00127 //======================================================================
00128 void reverseUUID(const uint8_t* src, uint8_t* dst)
00129 {
00130     int i;
00131     
00132     for(i=0;i<16;i++)
00133         dst[i] = src[15 - i];
00134 }
00135  
00136  
00137 //======================================================================
00138 //main
00139 //======================================================================
00140 int main(void)
00141 {
00142     uint8_t base_uuid_rev[16];
00143  
00144     //Timer Setting [us]
00145     Ticker ticker;
00146     ticker.attach_us(m_status_check_handle, TICKER_TIME);
00147     
00148     //BLE init
00149     blenano.init();
00150     
00151     //EventListener
00152     blenano.onDisconnection(disconnectionCallback);
00153     blenano.onDataWritten(WrittenHandler);  
00154  
00155     //------------------------------------------------------------
00156     //setup advertising 
00157     //------------------------------------------------------------
00158     //Classic BT not support
00159     blenano.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
00160     
00161     //Connectable to Central
00162     blenano.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00163     
00164     //Local Name
00165     blenano.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME,
00166                                     (const uint8_t *)DEVICE_LOCAL_NAME, sizeof(DEVICE_LOCAL_NAME) - 1);
00167     
00168     //GAP AdvertisingData                                
00169     reverseUUID(base_uuid, base_uuid_rev);  
00170     blenano.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
00171                                     (uint8_t *)base_uuid_rev, sizeof(base_uuid));
00172                                     
00173     //Advertising Interval 
00174     blenano.setAdvertisingInterval(ADVERTISING_INTERVAL);
00175  
00176     //Add Service
00177     blenano.addService(myService);
00178     
00179     //Start Advertising
00180     blenano.startAdvertising(); 
00181     
00182     //------------------------------------------------------------
00183     //Loop
00184     //------------------------------------------------------------
00185     int timer_ms;
00186     
00187     while(1)
00188     {
00189         blenano.waitForEvent(); 
00190         
00191         float s = ANALOG1;
00192         uint16_t value = s * 1024;
00193                         
00194         //---------------------------------------------------------------------------------------------       
00195         //Detect HeartRate Peak
00196         //--------------------------------------------------------------------------------------------- 
00197         timer_ms = TICKER_TIME/1000 * timer_num;
00198         if(value >= threshold_v && timer_ms > threshold_t)
00199         {    
00200             //clear timer_num
00201             timer_num = 0;                
00202             
00203             uint8_t buf[2];
00204             buf[0] = (timer_ms >> 8);
00205             buf[1] = timer_ms;
00206             
00207             //Send out
00208             blenano.updateCharacteristicValue(rxCharacteristic.getValueAttribute().getHandle(), buf, 2);    
00209         }       
00210     }
00211 }