PARK JAICHANG / HDC1000

20170911

Dependents:   Hexi_Click_HDC1000 Hexi_Click_HDC1000_v2

HDC1000.cpp@0:2dee66cf94c2, 2017-09-11 (annotated)

Committer:
i_am_kitsune
Date:
Mon Sep 11 02:06:47 2017 +0000
Revision:
0:2dee66cf94c2
Child:
1:383429056bd4
20170911

Who changed what in which revision?

UserRevisionLine numberNew contents of line
i_am_kitsune 0:2dee66cf94c2 1 /*
i_am_kitsune 0:2dee66cf94c2 2 * mbed library program
i_am_kitsune 0:2dee66cf94c2 3 * Low Power, High Accuracy Digital Humidity Sensor with Integrated Temperature Sensor
i_am_kitsune 0:2dee66cf94c2 4 * HDC1000 Texas Instruments
i_am_kitsune 0:2dee66cf94c2 5 *
i_am_kitsune 0:2dee66cf94c2 6 * Copyright (c) 2015,'17 Kenji Arai / JH1PJL
i_am_kitsune 0:2dee66cf94c2 7 * http://www.page.sannet.ne.jp/kenjia/index.html
i_am_kitsune 0:2dee66cf94c2 8 * http://mbed.org/users/kenjiArai/
i_am_kitsune 0:2dee66cf94c2 9 * Created: Feburary 9th, 2015
i_am_kitsune 0:2dee66cf94c2 10 * Revised: AAugust 21st, 2017
i_am_kitsune 0:2dee66cf94c2 11 */
i_am_kitsune 0:2dee66cf94c2 12
i_am_kitsune 0:2dee66cf94c2 13 #include "HDC1000.h"
i_am_kitsune 0:2dee66cf94c2 14
i_am_kitsune 0:2dee66cf94c2 15 HDC1000::HDC1000 (PinName p_sda, PinName p_scl) :
i_am_kitsune 0:2dee66cf94c2 16 _i2c_p(new I2C(p_sda, p_scl)), _i2c(*_i2c_p)
i_am_kitsune 0:2dee66cf94c2 17 {
i_am_kitsune 0:2dee66cf94c2 18 HDC1000_addr = HDC1000ADDR;
i_am_kitsune 0:2dee66cf94c2 19 init();
i_am_kitsune 0:2dee66cf94c2 20 }
i_am_kitsune 0:2dee66cf94c2 21
i_am_kitsune 0:2dee66cf94c2 22 HDC1000::HDC1000 (PinName p_sda, PinName p_scl, uint8_t addr) :
i_am_kitsune 0:2dee66cf94c2 23 _i2c_p(new I2C(p_sda, p_scl)), _i2c(*_i2c_p)
i_am_kitsune 0:2dee66cf94c2 24 {
i_am_kitsune 0:2dee66cf94c2 25 HDC1000_addr = addr;
i_am_kitsune 0:2dee66cf94c2 26 init();
i_am_kitsune 0:2dee66cf94c2 27 }
i_am_kitsune 0:2dee66cf94c2 28
i_am_kitsune 0:2dee66cf94c2 29 HDC1000::HDC1000 (I2C& p_i2c) : _i2c(p_i2c)
i_am_kitsune 0:2dee66cf94c2 30 {
i_am_kitsune 0:2dee66cf94c2 31 HDC1000_addr = HDC1000ADDR;
i_am_kitsune 0:2dee66cf94c2 32 init();
i_am_kitsune 0:2dee66cf94c2 33 }
i_am_kitsune 0:2dee66cf94c2 34
i_am_kitsune 0:2dee66cf94c2 35 HDC1000::HDC1000 (I2C& p_i2c, uint8_t addr) : _i2c(p_i2c)
i_am_kitsune 0:2dee66cf94c2 36 {
i_am_kitsune 0:2dee66cf94c2 37 HDC1000_addr = addr;
i_am_kitsune 0:2dee66cf94c2 38 init();
i_am_kitsune 0:2dee66cf94c2 39 }
i_am_kitsune 0:2dee66cf94c2 40
i_am_kitsune 0:2dee66cf94c2 41 /////////////// Start conv. and gwt all data //////////////
i_am_kitsune 0:2dee66cf94c2 42 void HDC1000::get()
i_am_kitsune 0:2dee66cf94c2 43 {
i_am_kitsune 0:2dee66cf94c2 44
i_am_kitsune 0:2dee66cf94c2 45 dt[0] = HDC1000_REG_TEMP;
i_am_kitsune 0:2dee66cf94c2 46 _i2c.write((int)HDC1000_addr, (char *)dt, 1, true);
i_am_kitsune 0:2dee66cf94c2 47 wait_ms(15);
i_am_kitsune 0:2dee66cf94c2 48 _i2c.read((int)HDC1000_addr, (char *)dt, 4, false);
i_am_kitsune 0:2dee66cf94c2 49 temp = dt[0] << 8 | dt[1];
i_am_kitsune 0:2dee66cf94c2 50 humi = dt[2] << 8 | dt[3];
i_am_kitsune 0:2dee66cf94c2 51 }
i_am_kitsune 0:2dee66cf94c2 52
i_am_kitsune 0:2dee66cf94c2 53 /////////////// Read data from sensor /////////////////////
i_am_kitsune 0:2dee66cf94c2 54 float HDC1000::temperature()
i_am_kitsune 0:2dee66cf94c2 55 {
i_am_kitsune 0:2dee66cf94c2 56 return (float)temp * 165 / 65536 - 40;
i_am_kitsune 0:2dee66cf94c2 57 }
i_am_kitsune 0:2dee66cf94c2 58
i_am_kitsune 0:2dee66cf94c2 59 float HDC1000::conv_c_to_f()
i_am_kitsune 0:2dee66cf94c2 60 {
i_am_kitsune 0:2dee66cf94c2 61 float tmp = temperature();
i_am_kitsune 0:2dee66cf94c2 62 tmp = temp;
i_am_kitsune 0:2dee66cf94c2 63 return (tmp * 1.8f) + 32.0f ;
i_am_kitsune 0:2dee66cf94c2 64 }
i_am_kitsune 0:2dee66cf94c2 65
i_am_kitsune 0:2dee66cf94c2 66
i_am_kitsune 0:2dee66cf94c2 67 /////////////// Read data from sensor /////////////////////
i_am_kitsune 0:2dee66cf94c2 68 float HDC1000::humidity()
i_am_kitsune 0:2dee66cf94c2 69 {
i_am_kitsune 0:2dee66cf94c2 70 return (float)humi * 100 / 65536;
i_am_kitsune 0:2dee66cf94c2 71 }
i_am_kitsune 0:2dee66cf94c2 72
i_am_kitsune 0:2dee66cf94c2 73 /////////////// Initialize ////////////////////////////////
i_am_kitsune 0:2dee66cf94c2 74 void HDC1000::init()
i_am_kitsune 0:2dee66cf94c2 75 {
i_am_kitsune 0:2dee66cf94c2 76 _i2c.frequency(100000);
i_am_kitsune 0:2dee66cf94c2 77 get_IDs();
i_am_kitsune 0:2dee66cf94c2 78 set_config(BOTH_T_14_H_14);
i_am_kitsune 0:2dee66cf94c2 79 }
i_am_kitsune 0:2dee66cf94c2 80
i_am_kitsune 0:2dee66cf94c2 81 /////////////// ID ////////////////////////////////////////
i_am_kitsune 0:2dee66cf94c2 82 uint16_t HDC1000::read_M_ID()
i_am_kitsune 0:2dee66cf94c2 83 {
i_am_kitsune 0:2dee66cf94c2 84 return manufacturer_id_number;
i_am_kitsune 0:2dee66cf94c2 85 }
i_am_kitsune 0:2dee66cf94c2 86
i_am_kitsune 0:2dee66cf94c2 87 uint16_t HDC1000::read_D_ID()
i_am_kitsune 0:2dee66cf94c2 88 {
i_am_kitsune 0:2dee66cf94c2 89 return device_id_number;
i_am_kitsune 0:2dee66cf94c2 90 }
i_am_kitsune 0:2dee66cf94c2 91
i_am_kitsune 0:2dee66cf94c2 92 uint8_t HDC1000::who_am_i()
i_am_kitsune 0:2dee66cf94c2 93 {
i_am_kitsune 0:2dee66cf94c2 94 if (device_id_number == I_AM_HDC1000) {
i_am_kitsune 0:2dee66cf94c2 95 return 1;
i_am_kitsune 0:2dee66cf94c2 96 } else {
i_am_kitsune 0:2dee66cf94c2 97 return 0;
i_am_kitsune 0:2dee66cf94c2 98 }
i_am_kitsune 0:2dee66cf94c2 99 }
i_am_kitsune 0:2dee66cf94c2 100
i_am_kitsune 0:2dee66cf94c2 101 /////////////// Configration //////////////////////////////
i_am_kitsune 0:2dee66cf94c2 102 uint16_t HDC1000::set_config(uint16_t cfg)
i_am_kitsune 0:2dee66cf94c2 103 {
i_am_kitsune 0:2dee66cf94c2 104 dt[0] = HDC1000_REG_CONFIG;
i_am_kitsune 0:2dee66cf94c2 105 dt[1] = (uint8_t)(cfg >> 8);
i_am_kitsune 0:2dee66cf94c2 106 dt[2] = (uint8_t)(cfg & 0xff);
i_am_kitsune 0:2dee66cf94c2 107 _i2c.write((int)HDC1000_addr, (char *)dt, 3, false);
i_am_kitsune 0:2dee66cf94c2 108 return read_config();
i_am_kitsune 0:2dee66cf94c2 109 }
i_am_kitsune 0:2dee66cf94c2 110
i_am_kitsune 0:2dee66cf94c2 111 uint16_t HDC1000::read_config(void)
i_am_kitsune 0:2dee66cf94c2 112 {
i_am_kitsune 0:2dee66cf94c2 113 dt[0] = HDC1000_REG_CONFIG;
i_am_kitsune 0:2dee66cf94c2 114 _i2c.write((int)HDC1000_addr, (char *)dt, 1, true);
i_am_kitsune 0:2dee66cf94c2 115 _i2c.read(HDC1000_addr, (char *)dt, 2, false);
i_am_kitsune 0:2dee66cf94c2 116 return (uint16_t)(dt[0] << 8 | dt[1]);
i_am_kitsune 0:2dee66cf94c2 117 }
i_am_kitsune 0:2dee66cf94c2 118
i_am_kitsune 0:2dee66cf94c2 119 /////////////// I2C Freq. /////////////////////////////////
i_am_kitsune 0:2dee66cf94c2 120 void HDC1000::frequency(int hz)
i_am_kitsune 0:2dee66cf94c2 121 {
i_am_kitsune 0:2dee66cf94c2 122 _i2c.frequency(hz);
i_am_kitsune 0:2dee66cf94c2 123 }
i_am_kitsune 0:2dee66cf94c2 124
i_am_kitsune 0:2dee66cf94c2 125 /////////////// Read ID ///////////////////////////////////
i_am_kitsune 0:2dee66cf94c2 126 void HDC1000::get_IDs()
i_am_kitsune 0:2dee66cf94c2 127 {
i_am_kitsune 0:2dee66cf94c2 128 // Manufacturer ID
i_am_kitsune 0:2dee66cf94c2 129 dt[0] = HDC1000_REG_M_ID;
i_am_kitsune 0:2dee66cf94c2 130 _i2c.write((int)HDC1000_addr, (char *)dt, 1, true);
i_am_kitsune 0:2dee66cf94c2 131 _i2c.read(HDC1000_addr, (char *)dt, 2, false);
i_am_kitsune 0:2dee66cf94c2 132 manufacturer_id_number = dt[0] << 8 | dt[1];
i_am_kitsune 0:2dee66cf94c2 133 // Device ID
i_am_kitsune 0:2dee66cf94c2 134 dt[0] = HDC1000_REG_D_ID;
i_am_kitsune 0:2dee66cf94c2 135 _i2c.write((int)HDC1000_addr, (char *)dt, 1, true);
i_am_kitsune 0:2dee66cf94c2 136 _i2c.read(HDC1000_addr, (char *)dt, 2, false);
i_am_kitsune 0:2dee66cf94c2 137 device_id_number = dt[0] << 8 | dt[1];
i_am_kitsune 0:2dee66cf94c2 138 }