113 lines
3.9 KiB
C++
113 lines
3.9 KiB
C++
/*
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* Author - Marcel Schulz (alias Schullebernd)
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* *************************************************************
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* See further library details on https://github.com/Schullebernd/SBNetwork
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* *************************************************************
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* This example is a client with a BME280 temperatur, humidity and barometer sensor on I2C.
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* It sends the measured values every 20 seconds to the master.
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* To setup the master device for this example, open the UniversalSensorMaster example and run it on a second device.
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* **************************************************************
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* Step 1 - Prepare your device like in the example sketch GettingStartedClient
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*
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* Step 2 - Connect the BME280 sensor to your arduino/wemos device
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* Connect Arduino --> BME280
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* ------------------
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* A4 --> SDA
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* A5 --> SCL
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* 3V3 --> VCC
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* GND --> GND
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* empty --> CSB
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* empty --> SD0
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* The I2C Address of BME280 usually is 0x76 --> Put this into bme.begin(0x76) at setup function. If this is not working try 0x77.
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*
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* Step 3 - Download and include the Sparkfun BME280 library.
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* https://github.com/sparkfun/SparkFun_BME280_Arduino_Library
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*
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* Step 4 - Run the project
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* Connect the Arduino via USB to the PC, select the right board and COM interface in the tools menu and run the project.
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*/
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#include <SparkFunBME280.h>
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#include <SBNetwork_config.h>
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#include <SBNetwork.h>
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// Type in here the mac address of the device.
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// This must be unique within your complete network otherwise the network will not work.
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//SBMacAddress deviceMac(0x01, 0x02, 0x03, 0x04, 0x05);
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SBMacAddress deviceMac(0x05, 0x04, 0x03, 0x02, 0x01);
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// Create a new network device with Arduino and set the _ce and _cs pin
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// The first argument defines the type of the device. false=master and true=client device
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//SBNetwork networkDevice(false, D2, D8);
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SBNetwork networkDevice(true, 6, 7);
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// time variables
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uint32_t wait = 20000;
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uint32_t lastWait = wait;
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// Define the BME280 sensor
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BME280 bme;
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void setup() {
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Serial.begin(19200);
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Serial.println(F("*** PRESS 'N' to reset the device"));
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// Initialize the network device
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networkDevice.initialize(deviceMac);
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// Initialize the BME280 sensor
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bme.settings.commInterface = I2C_MODE;
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bme.settings.I2CAddress = 0x76;
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bme.settings.runMode = 3;
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bme.settings.tStandby = 0;
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bme.settings.filter = 0;
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bme.settings.tempOverSample = 1;
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bme.settings.pressOverSample = 1;
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bme.settings.humidOverSample = 1;
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Serial.print("Starting BME280... result of .begin(): 0x");
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//Calling .begin() causes the settings to be loaded
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delay(10); //Make sure sensor had enough time to turn on. BME280 requires 2ms to start up.
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Serial.println(bme.begin(), HEX);
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}
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void loop() {
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if (Serial.available())
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{
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char c = toupper(Serial.read());
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if (c == 'N') {
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networkDevice.resetData();
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}
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}
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// Call this in the loop() function to maintain the network device
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networkDevice.update();
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// Send a message to the master every 4 seconds
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if (lastWait < millis()) {
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float fTemp = bme.readTempC();
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Serial.print("Temperature: ");
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Serial.print(fTemp, 2);
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Serial.println(" degrees C");
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float fPressure = bme.readFloatPressure();
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Serial.print("Pressure: ");
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Serial.print(fPressure, 2);
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Serial.println(" Pa");
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float fHumidity = bme.readFloatHumidity();
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Serial.print("%RH: ");
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Serial.print(fHumidity, 2);
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Serial.println(" %");
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byte message[10 + (3*4)]; // the first 10 bytes containing the type of the sensor. The 3*4 bytes are needed for the values. float has a length of 32 bits = 4 bytes and we need 3 of them.
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strcpy((char*)message, "BME280");
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memcpy((void*)(message + 10), &fTemp, sizeof(float));
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memcpy((void*)(message + 10 + 4), &fPressure, sizeof(float));
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memcpy((void*)(message + 10 + 4 + 4), &fHumidity, sizeof(float));
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networkDevice.sendToDevice(networkDevice.NetworkDevice.MasterMAC, message, 10 + (3*4));
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lastWait += wait;
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}
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} // Loop
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