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 "ble/services/EnvironmentalService.h"
00022 #include "MtSense01.h"
00023 
00024 /* UART printf */
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 led1(p16, 1);
00033 MtSense01 mtsense1(i2c, pc);
00034 
00035 const static char     DEVICE_NAME[] = "Mt5MtSense01";
00036 static const uint16_t uuid16_list[] = {0x1822, 0x181A};
00037 
00038 static EnvironmentalService *environmentalServicePtr;
00039 
00040 static EventQueue eventQueue(/* event count */ 16 * EVENTS_EVENT_SIZE);
00041 
00042 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
00043 {
00044     BLE::Instance().gap().startAdvertising();
00045 }
00046 
00047 void initMtSense01() {
00048     mtsense1.Initial();
00049 }
00050 
00051 void readMtSense01() {
00052     int pressPa;
00053     float tempC, humidity;
00054     
00055     mtsense1.readData(&tempC, &pressPa, &humidity);
00056     BLE &ble = BLE::Instance();
00057     if (ble.gap().getState().connected) {
00058         environmentalServicePtr->updateHumidity(humidity);
00059         environmentalServicePtr->updatePressure(pressPa);
00060         environmentalServicePtr->updateTemperature(tempC);
00061     }
00062     
00063 //    pc.printf("tempC: %8f, pressPa: %8d, humidity: %8f \r\n", tempC, pressPa, humidity);
00064         
00065 }
00066 
00067 void blinkCallback(void)
00068 {
00069     led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
00070 
00071     BLE &ble = BLE::Instance();
00072 }
00073 
00074 /**
00075  * This function is called when the ble initialization process has failled
00076  */
00077 void onBleInitError(BLE &ble, ble_error_t error)
00078 {
00079     /* Initialization error handling should go here */
00080 }
00081 
00082 /**
00083  * Callback triggered when the ble initialization process has finished
00084  */
00085 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
00086 {
00087     BLE&        ble   = params->ble;
00088     ble_error_t error = params->error;
00089 
00090     if (error != BLE_ERROR_NONE) {
00091         /* In case of error, forward the error handling to onBleInitError */
00092         onBleInitError(ble, error);
00093         return;
00094     }
00095 
00096     /* Ensure that it is the default instance of BLE */
00097     if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
00098         return;
00099     }
00100 
00101     ble.gap().onDisconnection(disconnectionCallback);
00102 
00103     /* Setup primary service */
00104     environmentalServicePtr = new EnvironmentalService(ble);
00105 
00106     /* Setup advertising */
00107     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00108     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *) uuid16_list, sizeof(uuid16_list));
00109     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *) DEVICE_NAME, sizeof(DEVICE_NAME));
00110     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00111     ble.gap().setAdvertisingInterval(100); /* 100ms */
00112     ble.gap().startAdvertising();
00113 }
00114 
00115 void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
00116     BLE &ble = BLE::Instance();
00117     eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
00118 }
00119 
00120 int main()
00121 {
00122     pc.set_flow_control(SerialBase::Disabled);
00123     pc.baud(115200);
00124     pc.printf("\r\n");
00125     pc.printf("Welcome MTM Node !\r\n");
00126     
00127     
00128     eventQueue.call_every(500, blinkCallback);
00129     
00130     initMtSense01();
00131     eventQueue.call_every(1000, readMtSense01); // 1000 ms repeat
00132 
00133     BLE &ble = BLE::Instance();
00134     ble.onEventsToProcess(scheduleBleEventsProcessing);
00135     ble.init(bleInitComplete);
00136 
00137     eventQueue.dispatch_forever();
00138 
00139     return 0;
00140 }