Steven Ea / Mbed OS projet_B-Hive

delay 10s

Dependencies:   HX711 DHT DS1820

main.cpp@0:2e0fc2c1e24c, 2020-10-12 (annotated)

Committer:
ismatel77
Date:
Mon Oct 12 10:37:18 2020 +0000
Revision:
0:2e0fc2c1e24c
Child:
1:b811fd6ee6f5
projet b-hive;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ismatel77 0:2e0fc2c1e24c 1 #include "mbed.h"
ismatel77 0:2e0fc2c1e24c 2 #include "DHT.h"
ismatel77 0:2e0fc2c1e24c 3 #include "DS1820.h"
ismatel77 0:2e0fc2c1e24c 4
ismatel77 0:2e0fc2c1e24c 5 #define DHT_DATA_PIN D4
ismatel77 0:2e0fc2c1e24c 6
ismatel77 0:2e0fc2c1e24c 7 DS1820 ds1820(D3); // substitute D8 with the actual pin name connected to the DS1820 sensor
ismatel77 0:2e0fc2c1e24c 8 float temp = 0;
ismatel77 0:2e0fc2c1e24c 9 int result = 0;
ismatel77 0:2e0fc2c1e24c 10
ismatel77 0:2e0fc2c1e24c 11 DHT sensor(DHT_DATA_PIN, DHT22); //DHT(PinName pin, eType DHTtype)
ismatel77 0:2e0fc2c1e24c 12 Serial pc(USBTX, USBRX); // tx, rx
ismatel77 0:2e0fc2c1e24c 13
ismatel77 0:2e0fc2c1e24c 14 Serial device(D1, D0); // tx, rx
ismatel77 0:2e0fc2c1e24c 15
ismatel77 0:2e0fc2c1e24c 16 int main()
ismatel77 0:2e0fc2c1e24c 17 {
ismatel77 0:2e0fc2c1e24c 18 int error = 0;
ismatel77 0:2e0fc2c1e24c 19 float h = 0.0f, c = 0.0f;
ismatel77 0:2e0fc2c1e24c 20 pc.baud(9600);
ismatel77 0:2e0fc2c1e24c 21 device.baud(9600);
ismatel77 0:2e0fc2c1e24c 22
ismatel77 0:2e0fc2c1e24c 23 if (!ds1820.begin()){
ismatel77 0:2e0fc2c1e24c 24 pc.printf("No DS1820 sensor found!\r\n");
ismatel77 0:2e0fc2c1e24c 25 }
ismatel77 0:2e0fc2c1e24c 26 else{
ismatel77 0:2e0fc2c1e24c 27 pc.printf("DS1820 sensor found!\r\n");
ismatel77 0:2e0fc2c1e24c 28 }
ismatel77 0:2e0fc2c1e24c 29
ismatel77 0:2e0fc2c1e24c 30 while(1) {
ismatel77 0:2e0fc2c1e24c 31
ismatel77 0:2e0fc2c1e24c 32 ds1820.startConversion(); // start temperature conversion from analog to digital
ismatel77 0:2e0fc2c1e24c 33 ThisThread::sleep_for(1000);// let DS1820 complete the temperature conversion
ismatel77 0:2e0fc2c1e24c 34 result = ds1820.read(temp); // read temperature from DS1820 and perform cyclic redundancy check (CRC)
ismatel77 0:2e0fc2c1e24c 35 error = sensor.readData(); //read error value
ismatel77 0:2e0fc2c1e24c 36
ismatel77 0:2e0fc2c1e24c 37 c = sensor.ReadTemperature(CELCIUS);
ismatel77 0:2e0fc2c1e24c 38 h = sensor.ReadHumidity();
ismatel77 0:2e0fc2c1e24c 39 pc.printf("temperature = %4.2f\r\n", c); // on affiche les valeurs sur teraTerm pour debug
ismatel77 0:2e0fc2c1e24c 40 pc.printf("Humidite = %4.2f\r\n", h);
ismatel77 0:2e0fc2c1e24c 41
ismatel77 0:2e0fc2c1e24c 42 switch (result) {
ismatel77 0:2e0fc2c1e24c 43 case 0: // no errors -> 'temp' contains the value of measured temperature
ismatel77 0:2e0fc2c1e24c 44 pc.printf("temp DS18B20 = %3.1f\r\n", temp);
ismatel77 0:2e0fc2c1e24c 45 break;
ismatel77 0:2e0fc2c1e24c 46
ismatel77 0:2e0fc2c1e24c 47 case 1: // no sensor present -> 'temp' was not updated
ismatel77 0:2e0fc2c1e24c 48 pc.printf("no sensor present\n\r");
ismatel77 0:2e0fc2c1e24c 49 break;
ismatel77 0:2e0fc2c1e24c 50
ismatel77 0:2e0fc2c1e24c 51 case 2: // CRC error -> 'temp' was not updated
ismatel77 0:2e0fc2c1e24c 52 pc.printf("CRC error\r\n");
ismatel77 0:2e0fc2c1e24c 53 }
ismatel77 0:2e0fc2c1e24c 54 device.printf("AT$SF=%02X%02X%02X\r\n", (char) c,(char) h, (char) temp); // on envoie les données sur l'antenne
ismatel77 0:2e0fc2c1e24c 55 wait(2.0f);
ismatel77 0:2e0fc2c1e24c 56 }
ismatel77 0:2e0fc2c1e24c 57 }