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@3:c460d60ffda6, 2016-12-01 (annotated)

Committer:
kaiserhaz
Date:
Thu Dec 01 08:28:55 2016 +0000
Revision:
3:c460d60ffda6
Parent:
2:326a19b95766
Child:
4:e5550110184d
Last fixes before pre-conference.

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