SBNetwork/examples/BME280_Client/BME280_Client.ino

113 lines
3.9 KiB
Arduino
Raw Normal View History

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