PRESA Raphaël / Mbed 2 deprecated essai_DS1621

capteur DS1621

Dependencies:   mbed

ds1621.h@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 #ifndef __DS1621_H
rpresa 0:78facd7c14b8 2 #define __DS1621_H
rpresa 0:78facd7c14b8 3
rpresa 0:78facd7c14b8 4 #define VERSION 1.0
rpresa 0:78facd7c14b8 5
rpresa 0:78facd7c14b8 6 #include <mbed.h>
rpresa 0:78facd7c14b8 7
rpresa 0:78facd7c14b8 8 //Temperature conversion commands
rpresa 0:78facd7c14b8 9 #define READ_TEMPERATURE 0xAA
rpresa 0:78facd7c14b8 10 #define READ_COUNTER 0xA8
rpresa 0:78facd7c14b8 11 #define READ_SLOPE 0xA9
rpresa 0:78facd7c14b8 12 #define START_CONVERT_T 0xEE
rpresa 0:78facd7c14b8 13 #define STOP_CONVERT_T 0x22
rpresa 0:78facd7c14b8 14
rpresa 0:78facd7c14b8 15 //Thermostat commands
rpresa 0:78facd7c14b8 16 #define ACCESS_TH 0xA1
rpresa 0:78facd7c14b8 17 #define ACCESS_TL 0xA2
rpresa 0:78facd7c14b8 18 #define ACCESS_CONFIG 0xAC
rpresa 0:78facd7c14b8 19
rpresa 0:78facd7c14b8 20 //Bits of Config register
rpresa 0:78facd7c14b8 21 #define DONE 0x80
rpresa 0:78facd7c14b8 22 #define THF 0x40
rpresa 0:78facd7c14b8 23 #define TLF 0x20
rpresa 0:78facd7c14b8 24 #define NVB 0x10
rpresa 0:78facd7c14b8 25 #define POL 0x02
rpresa 0:78facd7c14b8 26 #define ONESHOT 0x01
rpresa 0:78facd7c14b8 27
rpresa 0:78facd7c14b8 28 class DS1621 {
rpresa 0:78facd7c14b8 29 public:
rpresa 0:78facd7c14b8 30 DS1621(I2C* interface, unsigned char address);
rpresa 0:78facd7c14b8 31
rpresa 0:78facd7c14b8 32 // Set configuration register
rpresa 0:78facd7c14b8 33 void SetConfig(unsigned char cfg);
rpresa 0:78facd7c14b8 34
rpresa 0:78facd7c14b8 35 // Read a DS1621 register
rpresa 0:78facd7c14b8 36 unsigned char ReadReg(unsigned char reg);
rpresa 0:78facd7c14b8 37
rpresa 0:78facd7c14b8 38 // Sets temperature limit
rpresa 0:78facd7c14b8 39 // -- works only with ACCESS_TL, and ACCESS_TH
rpresa 0:78facd7c14b8 40 void SetLimit(unsigned char reg, float temp);
rpresa 0:78facd7c14b8 41
rpresa 0:78facd7c14b8 42 // Start/Stop DS1621 temperature conversion
rpresa 0:78facd7c14b8 43 void StartConversion(bool start);
rpresa 0:78facd7c14b8 44
rpresa 0:78facd7c14b8 45 // Reads temperature or limit
rpresa 0:78facd7c14b8 46 // -- works only with READ_TEMPERATURE, ACCESS_TL, and ACCESS_TH
rpresa 0:78facd7c14b8 47 // -- for actual temperature, set ONESHOT mode off and start conversion
rpresa 0:78facd7c14b8 48 // -- returns true if reg valid
rpresa 0:78facd7c14b8 49 bool GetTemp(unsigned char reg, float *Temp);
rpresa 0:78facd7c14b8 50
rpresa 0:78facd7c14b8 51 // Read high resolution temperature
rpresa 0:78facd7c14b8 52 // -- returns temperature in 1/100ths degrees
rpresa 0:78facd7c14b8 53 // -- DS1621 is set in ONESHOT mode
rpresa 0:78facd7c14b8 54 // -- returns true if conversion has finished, new temperature is calculated
rpresa 0:78facd7c14b8 55 // -- returns false if conversion is busy, previous temperature is given
rpresa 0:78facd7c14b8 56 bool GetHResTemp(float *Temp);
rpresa 0:78facd7c14b8 57
rpresa 0:78facd7c14b8 58 private:
rpresa 0:78facd7c14b8 59 I2C* i2c; // Communication interface
rpresa 0:78facd7c14b8 60 unsigned char address;
rpresa 0:78facd7c14b8 61 void ReadChipTemp(unsigned char cmd, unsigned char *data);
rpresa 0:78facd7c14b8 62 bool conversion_busy;
rpresa 0:78facd7c14b8 63 float LastTemp;
rpresa 0:78facd7c14b8 64 };
rpresa 0:78facd7c14b8 65 #endif