Green Building Team / Mbed 2 deprecated BLE_GreenYourLife_STM32

It is a simple IoT solution for plant life monitoring and maintenance, based on STM32NUCLEO boards and expansion modules.

Dependencies:   BLE_API X_NUCLEO_IDB0XA1 X_NUCLEO_IKS01A1 mbed

GreenYourLife, A Plant Life Monitoring and Maintenance System

Elaborated By Engineers, Designed For The World

Introduction

A healthy ecosystem is one where all the actors in it work in synergy: each of them playing a part that serves the other. Plants play an important part in regulating our quality of life. In the modern world, they would often times be placed in buildings and houses, as decorations or as medicinal and therapeutic purposes. Whatever the reason, GreenYourLife is here to help you manage them.

GreenYourLife is an Internet of Things (IoT) solution that will allow you to perform the following:

  • Follow your plant's well-being on your connected device (smartphone, etc.)
  • Maintain your plant's well-being automatically

We've developed an indoor plant monitoring system with the STM32NUCLEO development board. The system will collect the plant's environmental data (air temperature, air humidity and soil moisture) and transfer them to your connected device. The data collected will then be stored on a cloud server, where you can follow the progress of your plant life.

How it works

Plant maintanence

Our concept of maintanence is the automatic catering of the plant's needs. In this version, we focus on water supply. Future versions may indeed include more than that.

On-board sensors on the STM32NUCLEO will obtain measurements of 3 main parameters on the plant surrounding:

  1. Air temperature
  2. Air humidity
  3. Soil moisture

Based on these values, the software then acts upon the water pump: activating it when in need of water and deactivating it if not.

Plant monitoring

Plant monitoring, for us, is the follow-up of the plant's health by monitoring environment quality and plant nutritions. In this version, we only monitor the three parameters listed above. Future version may include more advanced and smarter monitoring technique.

The STM32NUCLEO device acts as a Bluetooth server and awaits connection from any client (smartphone, etc.). Upon connection, the server updates the plant environment parameters at a fixed interval. The client application will then transfer these received characteristics to the cloud.

Details

Hardware

The target platform is the STM32NUCLEO L476RG development board with two additional modules:

  • the IDB05A1 Bluetooth LE expansion board, which uses a BlueNRG coprocessor
  • and the IKS01A1 MEMS sensor expansion board

There are several additional materials that constitute the system:

  • a Funduino Soil Moisture Sensor, hooked up to 5V at pin PB_1
  • a relay, hooked up to 3.3V at pin PC_8 and controlled by a PWM pulse
  • a DC water pump

Software

We have used the ARM mbed platform for general code bring-up. We've used the following libraries:

  • mbed library by ARM
  • BLE_API library by the Bluetooth Low Energy team
  • X_NUCLEO_IDB0XA1 library by the ST Microelectronics team
  • X_NUCLEO_IKS01A1 library by the ST Microelectronics team

The acquired data on the client device is then sent to a cloud server that we hosted on ThingSpeak, so that people can remotely access the data. It is available at the GreenYourLife channel .

Reference

main.cpp@4:e5550110184d, 2016-12-05 (annotated)

Committer:
kaiserhaz
Date:
Mon Dec 05 14:36:45 2016 +0000
Revision:
4:e5550110184d
Parent:
3:c460d60ffda6 
Added licence statement.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kaiserhaz 0:7dce5e74ad91 1 /************************ STM32NUCLEO IOT Contest ******************************
kaiserhaz 0:7dce5e74ad91 2 *
kaiserhaz 0:7dce5e74ad91 3 * Green Building IoT Solution for
kaiserhaz 0:7dce5e74ad91 4 * Plant Life Monitoring And Maintenance
kaiserhaz 0:7dce5e74ad91 5 *
kaiserhaz 0:7dce5e74ad91 6 * Authored by
kaiserhaz 0:7dce5e74ad91 7 * Dien Hoa Truong
kaiserhaz 0:7dce5e74ad91 8 * Muhammad Haziq Bin Kamarul Azman
kaiserhaz 0:7dce5e74ad91 9 *
kaiserhaz 0:7dce5e74ad91 10 * for the
kaiserhaz 0:7dce5e74ad91 11 * eSAME 2016 STM32NUCLEO IoT Contest in Sophia-Antipolis
kaiserhaz 0:7dce5e74ad91 12 *
kaiserhaz 0:7dce5e74ad91 13 * main.cpp | Program main
kaiserhaz 0:7dce5e74ad91 14 *
kaiserhaz 4:e5550110184d 15 * See LICENCE.txt for information on copyrights
kaiserhaz 4:e5550110184d 16 *
kaiserhaz 0:7dce5e74ad91 17 ******************************************************************************/
kaiserhaz 0:7dce5e74ad91 18
kaiserhaz 0:7dce5e74ad91 19 /** Includes **/
kaiserhaz 0:7dce5e74ad91 20 #include "mbed.h" // ARM mbed library
kaiserhaz 0:7dce5e74ad91 21 #include "x_nucleo_iks01a1.h" // STM32NUCLEO board library
kaiserhaz 0:7dce5e74ad91 22 #include "ble/BLE.h" // Bluetooth LE library
kaiserhaz 0:7dce5e74ad91 23 #include "GreenBuildingService.h" // Green Building service library
kaiserhaz 0:7dce5e74ad91 24
kaiserhaz 0:7dce5e74ad91 25
kaiserhaz 0:7dce5e74ad91 26
kaiserhaz 0:7dce5e74ad91 27 /** Defines **/
kaiserhaz 2:326a19b95766 28 #define GB_SOIL_MOISTURE_MAX 70 // Soil moisture threshold value
kaiserhaz 0:7dce5e74ad91 29
kaiserhaz 0:7dce5e74ad91 30
kaiserhaz 0:7dce5e74ad91 31
kaiserhaz 0:7dce5e74ad91 32 /** Device declarations **/
kaiserhaz 0:7dce5e74ad91 33
kaiserhaz 0:7dce5e74ad91 34 // Board-specific
kaiserhaz 1:b30300f95d4a 35 PwmOut pumpPWM(PC_8); // PWM motor control out pin
kaiserhaz 0:7dce5e74ad91 36 DigitalOut led1(LED1, 1); // Debug pin instance
kaiserhaz 1:b30300f95d4a 37 AnalogIn moisture_sensor(PB_1); // Moisture sensor
kaiserhaz 0:7dce5e74ad91 38 static X_NUCLEO_IKS01A1 *mems_expansion_board = X_NUCLEO_IKS01A1::Instance(D14, D15); // Expansion board instance
kaiserhaz 0:7dce5e74ad91 39 static HumiditySensor *humidity_sensor = mems_expansion_board->ht_sensor; // Expansion board humidity sensor instance
kaiserhaz 0:7dce5e74ad91 40 static TempSensor *temp_sensor = mems_expansion_board->ht_sensor; // Expansion board temperature sensor instance
kaiserhaz 0:7dce5e74ad91 41
kaiserhaz 0:7dce5e74ad91 42 // BLE-specific
kaiserhaz 0:7dce5e74ad91 43 BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE); // BLE device instance
kaiserhaz 0:7dce5e74ad91 44 const static char DEVICE_NAME[] = "GB-Sensor"; // Device name
kaiserhaz 0:7dce5e74ad91 45 static const uint16_t uuid16_list[] = {GreenBuildingService::UUID_GREEN_BUILDING_SERVICE};
kaiserhaz 0:7dce5e74ad91 46 GreenBuildingService *gbServicePtr; // Service pointer
kaiserhaz 0:7dce5e74ad91 47
kaiserhaz 0:7dce5e74ad91 48 // Program-specific
kaiserhaz 0:7dce5e74ad91 49 float getMoistureValue();
kaiserhaz 0:7dce5e74ad91 50 float getHumidityValue();
kaiserhaz 0:7dce5e74ad91 51 float getTemperatureValue();
kaiserhaz 0:7dce5e74ad91 52 void errorLoop(void);
kaiserhaz 2:326a19b95766 53 void activateFastSensorPoll();
kaiserhaz 2:326a19b95766 54 void deactivateFastSensorPoll();
kaiserhaz 2:326a19b95766 55 void pumpActivateCallback(void);
kaiserhaz 2:326a19b95766 56 void pumpDeactivateCallback(void);
kaiserhaz 0:7dce5e74ad91 57
kaiserhaz 0:7dce5e74ad91 58 Ticker sanityTicker;
kaiserhaz 0:7dce5e74ad91 59 Ticker sensorPollTicker;
kaiserhaz 2:326a19b95766 60 Ticker fastSensorPollTicker;
kaiserhaz 2:326a19b95766 61 Timeout pumpWaitTimeout;
kaiserhaz 3:c460d60ffda6 62 uint8_t usersConnected;
kaiserhaz 0:7dce5e74ad91 63 bool sensorPolling;
kaiserhaz 2:326a19b95766 64 bool fastSensorPolling;
kaiserhaz 2:326a19b95766 65 bool pumpActivate;
kaiserhaz 2:326a19b95766 66 bool waitOnce;
kaiserhaz 2:326a19b95766 67 bool bleActive;
kaiserhaz 2:326a19b95766 68 bool pumpActive;
kaiserhaz 0:7dce5e74ad91 69
kaiserhaz 0:7dce5e74ad91 70
kaiserhaz 0:7dce5e74ad91 71 /** Callbacks **/
kaiserhaz 0:7dce5e74ad91 72
kaiserhaz 0:7dce5e74ad91 73 // BLE-specific callback
kaiserhaz 0:7dce5e74ad91 74 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) // Callback for everytime the connection gets disconnected
kaiserhaz 0:7dce5e74ad91 75 {
kaiserhaz 0:7dce5e74ad91 76 ble.gap().startAdvertising(); // Restart advertising
kaiserhaz 3:c460d60ffda6 77 if((!pumpActive)||(!usersConnected))
kaiserhaz 2:326a19b95766 78 deactivateFastSensorPoll();
kaiserhaz 2:326a19b95766 79 bleActive = false;
kaiserhaz 3:c460d60ffda6 80 --usersConnected;
kaiserhaz 0:7dce5e74ad91 81 // printf("\r\n> BLE : Disconnected. Advertising restarted.");
kaiserhaz 0:7dce5e74ad91 82 }
kaiserhaz 0:7dce5e74ad91 83
kaiserhaz 0:7dce5e74ad91 84 void connectionCallback(const Gap::ConnectionCallbackParams_t *params) // Callback for everytime the connection is established
kaiserhaz 0:7dce5e74ad91 85 {
kaiserhaz 3:c460d60ffda6 86 ble.gap().stopAdvertising(); // Stop advertising
kaiserhaz 2:326a19b95766 87 activateFastSensorPoll();
kaiserhaz 2:326a19b95766 88 bleActive = true;
kaiserhaz 3:c460d60ffda6 89 ++usersConnected;
kaiserhaz 0:7dce5e74ad91 90 // printf("\r\n> BLE : Connected to %x. Accept no subsequent connections.", params->peerAddr);
kaiserhaz 0:7dce5e74ad91 91 }
kaiserhaz 0:7dce5e74ad91 92
kaiserhaz 0:7dce5e74ad91 93 void onBleInitError(BLE &ble, ble_error_t error)
kaiserhaz 0:7dce5e74ad91 94 {
kaiserhaz 0:7dce5e74ad91 95 // printf("\r\n> BLE : Init error encountered. Error returned: %d", error);
kaiserhaz 0:7dce5e74ad91 96 errorLoop();
kaiserhaz 0:7dce5e74ad91 97 }
kaiserhaz 0:7dce5e74ad91 98
kaiserhaz 0:7dce5e74ad91 99 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
kaiserhaz 0:7dce5e74ad91 100 {
kaiserhaz 0:7dce5e74ad91 101 BLE& ble = params->ble;
kaiserhaz 0:7dce5e74ad91 102 ble_error_t error = params->error;
kaiserhaz 0:7dce5e74ad91 103
kaiserhaz 0:7dce5e74ad91 104 if (error != BLE_ERROR_NONE) { // Check to see init errors
kaiserhaz 0:7dce5e74ad91 105 onBleInitError(ble, error);
kaiserhaz 0:7dce5e74ad91 106 errorLoop();
kaiserhaz 0:7dce5e74ad91 107 }
kaiserhaz 0:7dce5e74ad91 108
kaiserhaz 0:7dce5e74ad91 109 if (ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { // If this is not default instance (double instanciation?)
kaiserhaz 0:7dce5e74ad91 110 // printf("\r\n> BLE : BLE controller instance is invalid.");
kaiserhaz 0:7dce5e74ad91 111 errorLoop();
kaiserhaz 0:7dce5e74ad91 112 }
kaiserhaz 0:7dce5e74ad91 113
kaiserhaz 0:7dce5e74ad91 114 ble.gap().onDisconnection(disconnectionCallback); // Register disconnection callback
kaiserhaz 0:7dce5e74ad91 115 ble.gap().onConnection(connectionCallback); // Register connection callback
kaiserhaz 0:7dce5e74ad91 116
kaiserhaz 0:7dce5e74ad91 117 gbServicePtr = new GreenBuildingService(ble); // Init service with initial value
kaiserhaz 0:7dce5e74ad91 118
kaiserhaz 0:7dce5e74ad91 119 /* Setup advertising. */
kaiserhaz 0:7dce5e74ad91 120 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
kaiserhaz 0:7dce5e74ad91 121 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
kaiserhaz 0:7dce5e74ad91 122 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS,(uint8_t *)uuid16_list, sizeof(uuid16_list));
kaiserhaz 0:7dce5e74ad91 123 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
kaiserhaz 0:7dce5e74ad91 124 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
kaiserhaz 0:7dce5e74ad91 125 ble.gap().startAdvertising();
kaiserhaz 0:7dce5e74ad91 126
kaiserhaz 0:7dce5e74ad91 127 // printf("\r\n> BLE : BLE Init done.");
kaiserhaz 0:7dce5e74ad91 128 }
kaiserhaz 0:7dce5e74ad91 129
kaiserhaz 0:7dce5e74ad91 130 // Helper functions for retrieving data from sensors
kaiserhaz 0:7dce5e74ad91 131 float getMoistureValue()
kaiserhaz 0:7dce5e74ad91 132 {
kaiserhaz 0:7dce5e74ad91 133 float moisture = 0;
kaiserhaz 0:7dce5e74ad91 134 for (int i = 1;i<=10;i++) {
kaiserhaz 0:7dce5e74ad91 135 moisture += moisture_sensor.read(); // Get ten samples
kaiserhaz 0:7dce5e74ad91 136 }
kaiserhaz 0:7dce5e74ad91 137 moisture = moisture / 10;
kaiserhaz 0:7dce5e74ad91 138 moisture = moisture * 3300; // Change the value to be in the 0 to 3300 range
kaiserhaz 0:7dce5e74ad91 139 moisture = moisture / 33; // Convert to percentage
kaiserhaz 0:7dce5e74ad91 140 return moisture;
kaiserhaz 0:7dce5e74ad91 141 }
kaiserhaz 0:7dce5e74ad91 142
kaiserhaz 0:7dce5e74ad91 143 float getHumidityValue()
kaiserhaz 0:7dce5e74ad91 144 {
kaiserhaz 0:7dce5e74ad91 145 float humidity = 0;
kaiserhaz 0:7dce5e74ad91 146 humidity_sensor->GetHumidity(&humidity);
kaiserhaz 0:7dce5e74ad91 147 return humidity;
kaiserhaz 0:7dce5e74ad91 148 }
kaiserhaz 0:7dce5e74ad91 149
kaiserhaz 0:7dce5e74ad91 150 float getTemperatureValue()
kaiserhaz 0:7dce5e74ad91 151 {
kaiserhaz 0:7dce5e74ad91 152 float temperature = 0;
kaiserhaz 0:7dce5e74ad91 153 temp_sensor->GetTemperature(&temperature);
kaiserhaz 0:7dce5e74ad91 154 return temperature;
kaiserhaz 0:7dce5e74ad91 155 }
kaiserhaz 0:7dce5e74ad91 156
kaiserhaz 0:7dce5e74ad91 157
kaiserhaz 0:7dce5e74ad91 158 // Miscellaneous callbacks & functions
kaiserhaz 0:7dce5e74ad91 159 void sanityCallback(void)
kaiserhaz 0:7dce5e74ad91 160 {
kaiserhaz 0:7dce5e74ad91 161 led1 = !led1; // Blink LED1 to indicate system sanity
kaiserhaz 0:7dce5e74ad91 162 }
kaiserhaz 0:7dce5e74ad91 163
kaiserhaz 0:7dce5e74ad91 164 void sensorPollCallback(void)
kaiserhaz 0:7dce5e74ad91 165 {
kaiserhaz 0:7dce5e74ad91 166 sensorPolling = true;
kaiserhaz 0:7dce5e74ad91 167 }
kaiserhaz 0:7dce5e74ad91 168
kaiserhaz 2:326a19b95766 169 void fastSensorPollCallback(void)
kaiserhaz 2:326a19b95766 170 {
kaiserhaz 2:326a19b95766 171 fastSensorPolling = true;
kaiserhaz 2:326a19b95766 172 }
kaiserhaz 2:326a19b95766 173
kaiserhaz 2:326a19b95766 174 void pumpActivateCallback(void)
kaiserhaz 2:326a19b95766 175 {
kaiserhaz 2:326a19b95766 176 pumpActivate = true;
kaiserhaz 2:326a19b95766 177 }
kaiserhaz 2:326a19b95766 178
kaiserhaz 2:326a19b95766 179 void pumpDeactivateCallback(void)
kaiserhaz 2:326a19b95766 180 {
kaiserhaz 2:326a19b95766 181 pumpActivate = false;
kaiserhaz 2:326a19b95766 182 }
kaiserhaz 2:326a19b95766 183
kaiserhaz 2:326a19b95766 184 void activateFastSensorPoll(void)
kaiserhaz 2:326a19b95766 185 {
kaiserhaz 2:326a19b95766 186 fastSensorPolling = true;
kaiserhaz 3:c460d60ffda6 187 fastSensorPollTicker.attach(&fastSensorPollCallback, 0.9);
kaiserhaz 2:326a19b95766 188 }
kaiserhaz 2:326a19b95766 189
kaiserhaz 2:326a19b95766 190 void deactivateFastSensorPoll(void)
kaiserhaz 2:326a19b95766 191 {
kaiserhaz 2:326a19b95766 192 fastSensorPolling = false;
kaiserhaz 2:326a19b95766 193 fastSensorPollTicker.detach();
kaiserhaz 2:326a19b95766 194 }
kaiserhaz 2:326a19b95766 195
kaiserhaz 2:326a19b95766 196
kaiserhaz 0:7dce5e74ad91 197 void errorLoop(void)
kaiserhaz 0:7dce5e74ad91 198 {
kaiserhaz 0:7dce5e74ad91 199 sanityTicker.detach();
kaiserhaz 0:7dce5e74ad91 200 sensorPollTicker.detach();
kaiserhaz 0:7dce5e74ad91 201 ble.shutdown();
kaiserhaz 1:b30300f95d4a 202 // printf("\r\n> ERROR : Error encountered. Infinite looping.");
kaiserhaz 0:7dce5e74ad91 203 while(true)
kaiserhaz 0:7dce5e74ad91 204 {
kaiserhaz 0:7dce5e74ad91 205 led1 != led1;
kaiserhaz 0:7dce5e74ad91 206 }
kaiserhaz 0:7dce5e74ad91 207 }
kaiserhaz 0:7dce5e74ad91 208
kaiserhaz 0:7dce5e74ad91 209
kaiserhaz 0:7dce5e74ad91 210
kaiserhaz 0:7dce5e74ad91 211 /** Pre-main inits **/
kaiserhaz 0:7dce5e74ad91 212
kaiserhaz 0:7dce5e74ad91 213
kaiserhaz 0:7dce5e74ad91 214
kaiserhaz 0:7dce5e74ad91 215 /** Main loop **/
kaiserhaz 0:7dce5e74ad91 216 int main(void)
kaiserhaz 0:7dce5e74ad91 217 {
kaiserhaz 3:c460d60ffda6 218 pumpPWM.write(1);
kaiserhaz 3:c460d60ffda6 219 pumpPWM.period(1.0f);
kaiserhaz 3:c460d60ffda6 220
kaiserhaz 0:7dce5e74ad91 221 printf("\r\n/**\r\n * Green Building Sensor Device: Debug Info\r\n */");
kaiserhaz 0:7dce5e74ad91 222
kaiserhaz 0:7dce5e74ad91 223 sensorPolling = false;
kaiserhaz 2:326a19b95766 224 fastSensorPolling = false;
kaiserhaz 2:326a19b95766 225 pumpActivate = false;
kaiserhaz 2:326a19b95766 226 waitOnce = true;
kaiserhaz 2:326a19b95766 227 bleActive = false;
kaiserhaz 2:326a19b95766 228 pumpActive = false;
kaiserhaz 0:7dce5e74ad91 229
kaiserhaz 0:7dce5e74ad91 230 sanityTicker.attach(sanityCallback, 1.1); // LED sanity checker
kaiserhaz 2:326a19b95766 231 sensorPollTicker.attach(sensorPollCallback, 4.9); // Sensor poll ticker
kaiserhaz 0:7dce5e74ad91 232
kaiserhaz 0:7dce5e74ad91 233 printf("\r\n> MAIN : Tickers initialized.");
kaiserhaz 0:7dce5e74ad91 234
kaiserhaz 0:7dce5e74ad91 235 volatile GreenBuildingService::PlantEnvironmentType_t peVal; // Plant environment var
kaiserhaz 3:c460d60ffda6 236 uint8_t pumpWaitTime = 3; // Pump waiting time
kaiserhaz 0:7dce5e74ad91 237
kaiserhaz 0:7dce5e74ad91 238 ble.init(bleInitComplete); // Pass BLE init complete function upon init
kaiserhaz 0:7dce5e74ad91 239
kaiserhaz 1:b30300f95d4a 240 // while(ble.hasInitialized() == false);
kaiserhaz 0:7dce5e74ad91 241
kaiserhaz 0:7dce5e74ad91 242 printf("\r\n> MAIN : BLE Init procedure done.");
kaiserhaz 0:7dce5e74ad91 243
kaiserhaz 0:7dce5e74ad91 244 // Infinite loop
kaiserhaz 0:7dce5e74ad91 245 while (true) {
kaiserhaz 0:7dce5e74ad91 246
kaiserhaz 2:326a19b95766 247 if(sensorPolling || fastSensorPolling)
kaiserhaz 0:7dce5e74ad91 248 {
kaiserhaz 0:7dce5e74ad91 249 sensorPolling = false; // Deassert polling bit
kaiserhaz 2:326a19b95766 250 fastSensorPolling = false;
kaiserhaz 0:7dce5e74ad91 251
kaiserhaz 0:7dce5e74ad91 252 peVal.soilMoisture = (uint8_t) getMoistureValue(); // Update all measurements
kaiserhaz 0:7dce5e74ad91 253 peVal.airHumidity = (uint8_t) getHumidityValue();
kaiserhaz 0:7dce5e74ad91 254 peVal.airTemperature = (int8_t) getTemperatureValue();
kaiserhaz 0:7dce5e74ad91 255
kaiserhaz 0:7dce5e74ad91 256 if(ble.getGapState().connected) // Update characteristic if connected
kaiserhaz 0:7dce5e74ad91 257 gbServicePtr->updatePlantEnvironment(peVal);
kaiserhaz 0:7dce5e74ad91 258
kaiserhaz 2:326a19b95766 259 // printf("\r\n> MAIN : Current soil moisture = %d", peVal.soilMoisture);
kaiserhaz 2:326a19b95766 260 // printf("\r\n> MAIN : Current air humidity = %d", peVal.airHumidity);
kaiserhaz 2:326a19b95766 261 // printf("\r\n> MAIN : Current air temperature = %d", peVal.airTemperature);
kaiserhaz 2:326a19b95766 262 printf("%d\t%d\t%d\r\n", peVal.airTemperature, peVal.airHumidity, peVal.soilMoisture);
kaiserhaz 0:7dce5e74ad91 263
kaiserhaz 2:326a19b95766 264 // If moisture is below 50% of max when user is present
kaiserhaz 2:326a19b95766 265 // or if less than 30% of max
kaiserhaz 2:326a19b95766 266 if( ( ((peVal.soilMoisture < 0.5*GB_SOIL_MOISTURE_MAX) && ble.getGapState().connected) ||
kaiserhaz 2:326a19b95766 267 ((peVal.soilMoisture < 0.3*GB_SOIL_MOISTURE_MAX) && !ble.getGapState().connected) ) &&
kaiserhaz 2:326a19b95766 268 waitOnce
kaiserhaz 2:326a19b95766 269 )
kaiserhaz 2:326a19b95766 270 {
kaiserhaz 3:c460d60ffda6 271 pumpWaitTimeout.attach(&pumpActivateCallback, pumpWaitTime); // Waiting time is hard coded but may be calculated, I think
kaiserhaz 2:326a19b95766 272 activateFastSensorPoll();
kaiserhaz 2:326a19b95766 273 waitOnce = false;
kaiserhaz 2:326a19b95766 274 pumpActive = true;
kaiserhaz 2:326a19b95766 275 }
kaiserhaz 3:c460d60ffda6 276 else if((peVal.soilMoisture >= 0.6*GB_SOIL_MOISTURE_MAX) && pumpActivate) // Stop condition: when soil moisture is at 60% of max
kaiserhaz 0:7dce5e74ad91 277 {
kaiserhaz 3:c460d60ffda6 278 pumpPWM.write(1);
kaiserhaz 2:326a19b95766 279 pumpWaitTimeout.detach();
kaiserhaz 2:326a19b95766 280 pumpDeactivateCallback();
kaiserhaz 2:326a19b95766 281 if(!bleActive)
kaiserhaz 2:326a19b95766 282 deactivateFastSensorPoll();
kaiserhaz 2:326a19b95766 283 waitOnce = true;
kaiserhaz 2:326a19b95766 284 pumpActive = false;
kaiserhaz 2:326a19b95766 285 }
kaiserhaz 2:326a19b95766 286
kaiserhaz 2:326a19b95766 287 if(pumpActivate)
kaiserhaz 2:326a19b95766 288 {
kaiserhaz 2:326a19b95766 289 // printf("\r\n> MAIN : Activating water pump.");
kaiserhaz 3:c460d60ffda6 290 pumpPWM.write(0.7);
kaiserhaz 2:326a19b95766 291 pumpActivate = false;
kaiserhaz 2:326a19b95766 292 pumpWaitTimeout.attach(&pumpActivateCallback, 1);
kaiserhaz 0:7dce5e74ad91 293 }
kaiserhaz 2:326a19b95766 294
kaiserhaz 0:7dce5e74ad91 295 }
kaiserhaz 0:7dce5e74ad91 296 else
kaiserhaz 2:326a19b95766 297 ble.waitForEvent(); //Low power wait for event
kaiserhaz 0:7dce5e74ad91 298
kaiserhaz 0:7dce5e74ad91 299 }
kaiserhaz 0:7dce5e74ad91 300 }