main.cpp

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2014 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #include <events/mbed_events.h>
00018 #include <mbed.h>
00019 #include "ble/BLE.h"
00020 #include "ble/Gap.h"
00021 #include "CCS811.h"
00022 #include "AirQualityService.h"
00023 
00024 //initial function pin
00025 #ifdef NRF52
00026 Serial pc(p20, p24);
00027 #else
00028 Serial pc(p5, p4);
00029 #endif
00030 
00031 I2C i2c(p3, p2);
00032 DigitalOut ledR(p16, 1);
00033 CCS811 ccs811(i2c, pc);
00034 
00035 static AirQualityService *AQSPtr;
00036 static uint16_t eco2, tvoc;
00037 
00038 const static char     DEVICE_NAME[] = "Mt5MtSense02";
00039 static const uint16_t uuid16_list[] = {GattService::UUID_BATTERY_SERVICE};
00040 
00041 
00042 static EventQueue eventQueue(/* event count */ 16 * EVENTS_EVENT_SIZE);
00043 
00044 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
00045 {
00046     BLE::Instance().gap().startAdvertising();
00047 }
00048 
00049 void updateSensorValue() {
00050     
00051     ledR = 0;
00052     
00053     uint16_t revertECO2 = (eco2>>8) | (eco2<<8);
00054     uint16_t revertTVOC = (tvoc>>8) | (tvoc<<8);
00055     
00056     AQSPtr->updateCO2(revertECO2);
00057     AQSPtr->updateTVOC(revertTVOC);
00058     
00059 }
00060 
00061 void blinkCallback(void)
00062 {
00063     ledR = !ledR; /* Do blinky on LED1 while we're waiting for BLE events */
00064 }
00065 
00066 void CCS811Callback(void) {
00067     
00068     ccs811.readData(&eco2, &tvoc);
00069     
00070     BLE &ble = BLE::Instance();
00071     if (ble.gap().getState().connected) {
00072         eventQueue.call(updateSensorValue);
00073     }
00074     
00075     pc.printf("eco2:%8d, tvoc:%8d\r\n", eco2, tvoc);
00076     
00077 }
00078 
00079 /**
00080  * This function is called when the ble initialization process has failled
00081  */
00082 void onBleInitError(BLE &ble, ble_error_t error)
00083 {
00084     /* Initialization error handling should go here */
00085 }
00086 
00087 /**
00088  * Callback triggered when the ble initialization process has finished
00089  */
00090 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
00091 {
00092     BLE&        ble   = params->ble;
00093     ble_error_t error = params->error;
00094 
00095 
00096     uint8_t co2CID[16] = {
00097             0x00,  'M',  'T', 'M',
00098             'C' ,  'O',  '2', 0xFF,
00099             0xFF, 0xFF, 0xFF, 0xFF,
00100             0xFF, 0xFF, 0xFF, 0xFF
00101     };
00102     
00103     uint8_t tvocCID[16] = {
00104             0x00,  'M',  'T', 'M' ,
00105             'T' ,  'V',  'O', 'C' ,
00106             0xFF, 0xFF, 0xFF, 0xFF,
00107             0xFF, 0xFF, 0xFF, 0xFF
00108     };
00109     
00110     UUID CO2CID (co2CID);
00111     UUID TVOCCID(tvocCID);
00112     
00113     AQSPtr = new AirQualityService(ble, CO2CID, TVOCCID);
00114 
00115 
00116     if (error != BLE_ERROR_NONE) {
00117         /* In case of error, forward the error handling to onBleInitError */
00118         onBleInitError(ble, error);
00119         return;
00120     }
00121 
00122     /* Ensure that it is the default instance of BLE */
00123     if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
00124         return;
00125     }
00126 
00127     ble.gap().onDisconnection(disconnectionCallback);
00128 
00129     /* Setup advertising */
00130     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00131 //    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *) uuid16_list, sizeof(uuid16_list));
00132     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *) DEVICE_NAME, sizeof(DEVICE_NAME));
00133     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00134     ble.gap().setAdvertisingInterval(100); /* 1000ms */
00135     ble.gap().startAdvertising();
00136 }
00137 
00138 void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
00139     BLE &ble = BLE::Instance();
00140     eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
00141 }
00142 
00143 int main()
00144 {
00145     pc.set_flow_control(SerialBase::Disabled);
00146     pc.baud(115200);
00147     pc.printf("\r\n");
00148     pc.printf("Welcome MTM Node !\r\n");
00149     
00150     eventQueue.call_every(500, blinkCallback);
00151 
00152     ccs811.init();
00153 //    ccs811.softRest();
00154     eventQueue.call_every(2000, CCS811Callback);
00155 
00156     BLE &ble = BLE::Instance();
00157     ble.onEventsToProcess(scheduleBleEventsProcessing);
00158     ble.init(bleInitComplete);
00159 
00160     eventQueue.dispatch_forever();
00161 
00162     return 0;
00163 }