Joseph Ellsworth / hdc1080

interface library to support TI hdc1080 humidity and temperature sensor

Dependents:   xj-Nucleo-F303K8-hdc1080-test HelloWorld_NFC02A1laatste

hdc1080.h@0:36666c79a60f, 2016-07-28 (annotated)

Committer:
joeata2wh
Date:
Thu Jul 28 02:20:22 2016 +0000
Revision:
0:36666c79a60f
Child:
1:dd3a07b44fe2
wip still not working

Who changed what in which revision?

UserRevisionLine numberNew contents of line
joeata2wh 0:36666c79a60f 1 /*
joeata2wh 0:36666c79a60f 2
joeata2wh 0:36666c79a60f 3 See Also:
joeata2wh 0:36666c79a60f 4 http://www.ti.com/lit/ds/symlink/hdc1080.pdf
joeata2wh 0:36666c79a60f 5 https://github.com/closedcube/ClosedCube_HDC1080_Arduino/blob/master/src/ClosedCube_HDC1080.cpp
joeata2wh 0:36666c79a60f 6 http://e.pavlin.si/2016/06/04/hdlc-like-data-link-via-rs485/
joeata2wh 0:36666c79a60f 7
joeata2wh 0:36666c79a60f 8 */
joeata2wh 0:36666c79a60f 9
joeata2wh 0:36666c79a60f 10 #ifndef hdc1080_h
joeata2wh 0:36666c79a60f 11 #define hdc1080_h
joeata2wh 0:36666c79a60f 12 #include "mbed.h"
joeata2wh 0:36666c79a60f 13
joeata2wh 0:36666c79a60f 14 #define hdc_chip_addr (0x40 << 1) // Page #8.5.1.1 - 1000000
joeata2wh 0:36666c79a60f 15 // left shift 1 bit for 7 bit address required by
joeata2wh 0:36666c79a60f 16 // I2C library
joeata2wh 0:36666c79a60f 17 //#define hdc_chip_addr 0x40 // Page #8.5.1.1 - 1000000
joeata2wh 0:36666c79a60f 18 const int off_temp = 0x00;
joeata2wh 0:36666c79a60f 19 const int off_humid_off = 0x01;
joeata2wh 0:36666c79a60f 20 const int off_config = 0x02;
joeata2wh 0:36666c79a60f 21 const int off_man_id = 0xFE;
joeata2wh 0:36666c79a60f 22 const int off_serial_first = 0xFB;
joeata2wh 0:36666c79a60f 23 const int off_serial_mid = 0xFC;
joeata2wh 0:36666c79a60f 24 const int off_serial_last = 0xFD;
joeata2wh 0:36666c79a60f 25 char comm = off_man_id;
joeata2wh 0:36666c79a60f 26
joeata2wh 0:36666c79a60f 27 char hdc_buff[10];
joeata2wh 0:36666c79a60f 28
joeata2wh 0:36666c79a60f 29 //I2C i2c(D4,D5);
joeata2wh 0:36666c79a60f 30
joeata2wh 0:36666c79a60f 31 void hdc_begin() {
joeata2wh 0:36666c79a60f 32 printf("hdc_begin\r\n");
joeata2wh 0:36666c79a60f 33 memset(hdc_buff,0,3);
joeata2wh 0:36666c79a60f 34 hdc_buff[0] = off_config;
joeata2wh 0:36666c79a60f 35 int res = i2c.write(hdc_chip_addr, hdc_buff, 2);
joeata2wh 0:36666c79a60f 36 printf("hdc_begin write res=%d\r\n", res);
joeata2wh 0:36666c79a60f 37 }
joeata2wh 0:36666c79a60f 38
joeata2wh 0:36666c79a60f 39 float hdc_readTemp() {
joeata2wh 0:36666c79a60f 40 printf("hdc_readTemp()\r\n");
joeata2wh 0:36666c79a60f 41 memset(hdc_buff,0,3);
joeata2wh 0:36666c79a60f 42 hdc_buff[0] = off_temp;
joeata2wh 0:36666c79a60f 43 int res = i2c.write(hdc_chip_addr, hdc_buff, 1);
joeata2wh 0:36666c79a60f 44 printf("write res=%d\r\n", res);
joeata2wh 0:36666c79a60f 45 wait(0.015);
joeata2wh 0:36666c79a60f 46 memset(hdc_buff,0,3);
joeata2wh 0:36666c79a60f 47 res = i2c.read(hdc_chip_addr, hdc_buff,2);
joeata2wh 0:36666c79a60f 48 printf("read res=%d hdc_buff [0]=%d [1]=%d\r\n", res, (int) hdc_buff[0], (int) hdc_buff[1]);
joeata2wh 0:36666c79a60f 49 }
joeata2wh 0:36666c79a60f 50
joeata2wh 0:36666c79a60f 51 float hdc_readHumid() {
joeata2wh 0:36666c79a60f 52
joeata2wh 0:36666c79a60f 53 }
joeata2wh 0:36666c79a60f 54
joeata2wh 0:36666c79a60f 55 float hdc_readManufactId() {
joeata2wh 0:36666c79a60f 56 printf("hdc_readManufactId()\r\n");
joeata2wh 0:36666c79a60f 57 wait(0.015);
joeata2wh 0:36666c79a60f 58 memset(hdc_buff,0,3);
joeata2wh 0:36666c79a60f 59 hdc_buff[0] = off_man_id;
joeata2wh 0:36666c79a60f 60 int res = i2c.write(hdc_chip_addr, hdc_buff, 1);
joeata2wh 0:36666c79a60f 61 printf("write res=%d\r\n", res);
joeata2wh 0:36666c79a60f 62
joeata2wh 0:36666c79a60f 63 wait(0.015);
joeata2wh 0:36666c79a60f 64 memset(hdc_buff,0,3);
joeata2wh 0:36666c79a60f 65 res = i2c.read(hdc_chip_addr, hdc_buff,2);
joeata2wh 0:36666c79a60f 66 printf("read res=%d hdc_buff [0]=%d [1]=%d\r\n", res, (int) hdc_buff[0], (int) hdc_buff[1]);
joeata2wh 0:36666c79a60f 67
joeata2wh 0:36666c79a60f 68 }
joeata2wh 0:36666c79a60f 69
joeata2wh 0:36666c79a60f 70 #endif