Kenji Arai / HDC1000

Digital Humidity Sensor with Temperature Sensor by TI. Default address sets Akizuki kit module.

Dependents:   AmbientExampleLPC1768 HumidifierController_LPC824 TYBLE16_mbedlized_Thermometer

HDC1000.cpp@1:c8f2c01befe1, 2017-08-22 (annotated)

Committer:
kenjiArai
Date:
Tue Aug 22 10:11:30 2017 +0000
Revision:
1:c8f2c01befe1
Parent:
0:927110422689 
countermeasure for  NonCopyable

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kenjiArai 0:927110422689 1 /*
kenjiArai 0:927110422689 2 * mbed library program
kenjiArai 0:927110422689 3 * Low Power, High Accuracy Digital Humidity Sensor with Integrated Temperature Sensor
kenjiArai 0:927110422689 4 * HDC1000 Texas Instruments
kenjiArai 0:927110422689 5 *
kenjiArai 1:c8f2c01befe1 6 * Copyright (c) 2015,'17 Kenji Arai / JH1PJL
kenjiArai 0:927110422689 7 * http://www.page.sannet.ne.jp/kenjia/index.html
kenjiArai 0:927110422689 8 * http://mbed.org/users/kenjiArai/
kenjiArai 0:927110422689 9 * Created: Feburary 9th, 2015
kenjiArai 1:c8f2c01befe1 10 * Revised: AAugust 21st, 2017
kenjiArai 0:927110422689 11 */
kenjiArai 0:927110422689 12
kenjiArai 0:927110422689 13 #include "HDC1000.h"
kenjiArai 0:927110422689 14
kenjiArai 1:c8f2c01befe1 15 HDC1000::HDC1000 (PinName p_sda, PinName p_scl) :
kenjiArai 1:c8f2c01befe1 16 _i2c_p(new I2C(p_sda, p_scl)), _i2c(*_i2c_p)
kenjiArai 0:927110422689 17 {
kenjiArai 0:927110422689 18 HDC1000_addr = HDC1000ADDR;
kenjiArai 0:927110422689 19 init();
kenjiArai 0:927110422689 20 }
kenjiArai 0:927110422689 21
kenjiArai 1:c8f2c01befe1 22 HDC1000::HDC1000 (PinName p_sda, PinName p_scl, uint8_t addr) :
kenjiArai 1:c8f2c01befe1 23 _i2c_p(new I2C(p_sda, p_scl)), _i2c(*_i2c_p)
kenjiArai 0:927110422689 24 {
kenjiArai 0:927110422689 25 HDC1000_addr = addr;
kenjiArai 0:927110422689 26 init();
kenjiArai 0:927110422689 27 }
kenjiArai 0:927110422689 28
kenjiArai 0:927110422689 29 HDC1000::HDC1000 (I2C& p_i2c) : _i2c(p_i2c)
kenjiArai 0:927110422689 30 {
kenjiArai 0:927110422689 31 HDC1000_addr = HDC1000ADDR;
kenjiArai 0:927110422689 32 init();
kenjiArai 0:927110422689 33 }
kenjiArai 0:927110422689 34
kenjiArai 0:927110422689 35 HDC1000::HDC1000 (I2C& p_i2c, uint8_t addr) : _i2c(p_i2c)
kenjiArai 0:927110422689 36 {
kenjiArai 0:927110422689 37 HDC1000_addr = addr;
kenjiArai 0:927110422689 38 init();
kenjiArai 0:927110422689 39 }
kenjiArai 0:927110422689 40
kenjiArai 0:927110422689 41 /////////////// Start conv. and gwt all data //////////////
kenjiArai 0:927110422689 42 void HDC1000::get()
kenjiArai 0:927110422689 43 {
kenjiArai 0:927110422689 44
kenjiArai 0:927110422689 45 dt[0] = HDC1000_REG_TEMP;
kenjiArai 0:927110422689 46 _i2c.write((int)HDC1000_addr, (char *)dt, 1, true);
kenjiArai 0:927110422689 47 wait_ms(15);
kenjiArai 0:927110422689 48 _i2c.read((int)HDC1000_addr, (char *)dt, 4, false);
kenjiArai 0:927110422689 49 temp = dt[0] << 8 | dt[1];
kenjiArai 0:927110422689 50 humi = dt[2] << 8 | dt[3];
kenjiArai 0:927110422689 51 }
kenjiArai 0:927110422689 52
kenjiArai 0:927110422689 53 /////////////// Read data from sensor /////////////////////
kenjiArai 0:927110422689 54 float HDC1000::temperature()
kenjiArai 0:927110422689 55 {
kenjiArai 0:927110422689 56 return (float)temp * 165 / 65536 - 40;
kenjiArai 0:927110422689 57 }
kenjiArai 0:927110422689 58
kenjiArai 0:927110422689 59 /////////////// Read data from sensor /////////////////////
kenjiArai 0:927110422689 60 float HDC1000::humidity()
kenjiArai 0:927110422689 61 {
kenjiArai 0:927110422689 62 return (float)humi * 100 / 65536;
kenjiArai 0:927110422689 63 }
kenjiArai 0:927110422689 64
kenjiArai 0:927110422689 65 /////////////// Initialize ////////////////////////////////
kenjiArai 0:927110422689 66 void HDC1000::init()
kenjiArai 0:927110422689 67 {
kenjiArai 0:927110422689 68 _i2c.frequency(100000);
kenjiArai 0:927110422689 69 get_IDs();
kenjiArai 0:927110422689 70 set_config(BOTH_T_14_H_14);
kenjiArai 0:927110422689 71 }
kenjiArai 0:927110422689 72
kenjiArai 0:927110422689 73 /////////////// ID ////////////////////////////////////////
kenjiArai 0:927110422689 74 uint16_t HDC1000::read_M_ID()
kenjiArai 0:927110422689 75 {
kenjiArai 0:927110422689 76 return manufacturer_id_number;
kenjiArai 0:927110422689 77 }
kenjiArai 0:927110422689 78
kenjiArai 0:927110422689 79 uint16_t HDC1000::read_D_ID()
kenjiArai 0:927110422689 80 {
kenjiArai 0:927110422689 81 return device_id_number;
kenjiArai 0:927110422689 82 }
kenjiArai 0:927110422689 83
kenjiArai 0:927110422689 84 uint8_t HDC1000::who_am_i()
kenjiArai 0:927110422689 85 {
kenjiArai 0:927110422689 86 if (device_id_number == I_AM_HDC1000) {
kenjiArai 0:927110422689 87 return 1;
kenjiArai 0:927110422689 88 } else {
kenjiArai 0:927110422689 89 return 0;
kenjiArai 0:927110422689 90 }
kenjiArai 0:927110422689 91 }
kenjiArai 0:927110422689 92
kenjiArai 0:927110422689 93 /////////////// Configration //////////////////////////////
kenjiArai 0:927110422689 94 uint16_t HDC1000::set_config(uint16_t cfg)
kenjiArai 0:927110422689 95 {
kenjiArai 0:927110422689 96 dt[0] = HDC1000_REG_CONFIG;
kenjiArai 0:927110422689 97 dt[1] = (uint8_t)(cfg >> 8);
kenjiArai 0:927110422689 98 dt[2] = (uint8_t)(cfg & 0xff);
kenjiArai 0:927110422689 99 _i2c.write((int)HDC1000_addr, (char *)dt, 3, false);
kenjiArai 0:927110422689 100 return read_config();
kenjiArai 0:927110422689 101 }
kenjiArai 0:927110422689 102
kenjiArai 0:927110422689 103 uint16_t HDC1000::read_config(void)
kenjiArai 0:927110422689 104 {
kenjiArai 0:927110422689 105 dt[0] = HDC1000_REG_CONFIG;
kenjiArai 0:927110422689 106 _i2c.write((int)HDC1000_addr, (char *)dt, 1, true);
kenjiArai 0:927110422689 107 _i2c.read(HDC1000_addr, (char *)dt, 2, false);
kenjiArai 0:927110422689 108 return (uint16_t)(dt[0] << 8 | dt[1]);
kenjiArai 0:927110422689 109 }
kenjiArai 0:927110422689 110
kenjiArai 0:927110422689 111 /////////////// I2C Freq. /////////////////////////////////
kenjiArai 0:927110422689 112 void HDC1000::frequency(int hz)
kenjiArai 0:927110422689 113 {
kenjiArai 0:927110422689 114 _i2c.frequency(hz);
kenjiArai 0:927110422689 115 }
kenjiArai 0:927110422689 116
kenjiArai 0:927110422689 117 /////////////// Read ID ///////////////////////////////////
kenjiArai 0:927110422689 118 void HDC1000::get_IDs()
kenjiArai 0:927110422689 119 {
kenjiArai 0:927110422689 120 // Manufacturer ID
kenjiArai 0:927110422689 121 dt[0] = HDC1000_REG_M_ID;
kenjiArai 0:927110422689 122 _i2c.write((int)HDC1000_addr, (char *)dt, 1, true);
kenjiArai 0:927110422689 123 _i2c.read(HDC1000_addr, (char *)dt, 2, false);
kenjiArai 0:927110422689 124 manufacturer_id_number = dt[0] << 8 | dt[1];
kenjiArai 0:927110422689 125 // Device ID
kenjiArai 0:927110422689 126 dt[0] = HDC1000_REG_D_ID;
kenjiArai 0:927110422689 127 _i2c.write((int)HDC1000_addr, (char *)dt, 1, true);
kenjiArai 0:927110422689 128 _i2c.read(HDC1000_addr, (char *)dt, 2, false);
kenjiArai 0:927110422689 129 device_id_number = dt[0] << 8 | dt[1];
kenjiArai 0:927110422689 130 }