PRESA Raphaël / Mbed 2 deprecated essai_DS1621

capteur DS1621

Dependencies:   mbed

Main.cpp@0:78facd7c14b8, 2020-05-20 (annotated)

Committer:
rpresa
Date:
Wed May 20 12:03:32 2020 +0000
Revision:
0:78facd7c14b8
essai DS1621

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rpresa 0:78facd7c14b8 1 #include "ds1621.h"
rpresa 0:78facd7c14b8 2
rpresa 0:78facd7c14b8 3
rpresa 0:78facd7c14b8 4
rpresa 0:78facd7c14b8 5 #define DS1621_ADDR 0x90 // I2c DS1621 address is 0x00
rpresa 0:78facd7c14b8 6
rpresa 0:78facd7c14b8 7 Serial pc(USBTX, USBRX); // port série USB
rpresa 0:78facd7c14b8 8 //pins are: TX RX
rpresa 0:78facd7c14b8 9
rpresa 0:78facd7c14b8 10
rpresa 0:78facd7c14b8 11 I2C i2c(p9, p10); // Declare I2C (pullup resistors 2.2k from p9 and p10 to +5v)
rpresa 0:78facd7c14b8 12 DS1621 ds(&i2c, DS1621_ADDR); // Declare ds1621 throught i2c interface
rpresa 0:78facd7c14b8 13
rpresa 0:78facd7c14b8 14
rpresa 0:78facd7c14b8 15
rpresa 0:78facd7c14b8 16
rpresa 0:78facd7c14b8 17 float Temperature = 24.0,
rpresa 0:78facd7c14b8 18 Temp_H=25.0,
rpresa 0:78facd7c14b8 19 Temp_L=23.0,
rpresa 0:78facd7c14b8 20 Temp_cons=35,
rpresa 0:78facd7c14b8 21 hysteresis=5.0,
rpresa 0:78facd7c14b8 22 periode=1.0; // acquisition toutes les secondes
rpresa 0:78facd7c14b8 23
rpresa 0:78facd7c14b8 24 unsigned char trame[6];
rpresa 0:78facd7c14b8 25 int cpt=0; // compteur trame
rpresa 0:78facd7c14b8 26 int flag=0; // detection de debut de trame
rpresa 0:78facd7c14b8 27 int etat_regulation=0; // =0 pas de regulation =1 regulation
rpresa 0:78facd7c14b8 28 int Sortie_reg=0; // etat sortie reg du DS1621
rpresa 0:78facd7c14b8 29
rpresa 0:78facd7c14b8 30
rpresa 0:78facd7c14b8 31
rpresa 0:78facd7c14b8 32 int main() {
rpresa 0:78facd7c14b8 33 i2c.frequency(5000); //5khz
rpresa 0:78facd7c14b8 34 pc.printf("-----------------------\n\rMain\n\r");
rpresa 0:78facd7c14b8 35 char reg;
rpresa 0:78facd7c14b8 36 int result;
rpresa 0:78facd7c14b8 37
rpresa 0:78facd7c14b8 38
rpresa 0:78facd7c14b8 39
rpresa 0:78facd7c14b8 40 ds.SetConfig(0x00); // POL=1, 1SHOT=0
rpresa 0:78facd7c14b8 41 wait(1);
rpresa 0:78facd7c14b8 42 reg=ds.ReadReg(ACCESS_CONFIG); // lecture registre CONFIG pour controle
rpresa 0:78facd7c14b8 43 pc.printf("REG=%d\n\r",reg);
rpresa 0:78facd7c14b8 44 ds.SetLimit(ACCESS_TH,-20); // fixe TH: valeur basse pour avoir commande de sortie =0
rpresa 0:78facd7c14b8 45 wait(1);
rpresa 0:78facd7c14b8 46 ds.SetLimit(ACCESS_TL, -21.0); // fixe TL: valeur basse pour avoir commande de sortie =0
rpresa 0:78facd7c14b8 47 wait(1);
rpresa 0:78facd7c14b8 48
rpresa 0:78facd7c14b8 49 ds.StartConversion(1);
rpresa 0:78facd7c14b8 50 wait(1);
rpresa 0:78facd7c14b8 51
rpresa 0:78facd7c14b8 52 result=ds.GetTemp(ACCESS_TL,&Temp_L);
rpresa 0:78facd7c14b8 53 if(result==1) pc.printf("TL=%3.1f\n\r",Temp_L);
rpresa 0:78facd7c14b8 54 wait(1);
rpresa 0:78facd7c14b8 55 result= ds.GetTemp(ACCESS_TH,&Temp_H);
rpresa 0:78facd7c14b8 56 if(result==1) pc.printf("TH=%3.1f\n\r",Temp_H);
rpresa 0:78facd7c14b8 57 wait(1);
rpresa 0:78facd7c14b8 58
rpresa 0:78facd7c14b8 59 while (1) {
rpresa 0:78facd7c14b8 60 result= ds.GetTemp(READ_TEMPERATURE,&Temperature); // acquisition Temp à 0.5
rpresa 0:78facd7c14b8 61 //result= ds.GetHResTemp(&Temperature); // acquisition Temp à 0.1 °C
rpresa 0:78facd7c14b8 62 pc.printf("Temperature=%3.1f C\n\r",Temperature);
rpresa 0:78facd7c14b8 63 wait(1);
rpresa 0:78facd7c14b8 64 }
rpresa 0:78facd7c14b8 65 }