Jacobus de Jager / TMPx75

Library for TMPx75 Temperature Sensor

TMPx75.h@1:ba7de6d38992, 2018-12-12 (annotated)

Committer:
jake123jake123
Date:
Wed Dec 12 21:53:42 2018 +0000
Revision:
1:ba7de6d38992
Parent:
0:ba71558a5d0a 
example code in .h

Who changed what in which revision?

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jake123jake123 0:ba71558a5d0a 1 /*
jake123jake123 0:ba71558a5d0a 2 Copyright (c) 2018 Jacobus L de Jager
jake123jake123 0:ba71558a5d0a 3
jake123jake123 0:ba71558a5d0a 4 Permission is hereby granted, free of charge, to any person obtaining a copy
jake123jake123 0:ba71558a5d0a 5 of this software and associated documentation files (the "Software"), to deal
jake123jake123 0:ba71558a5d0a 6 in the Software without restriction, including without limitation the rights
jake123jake123 0:ba71558a5d0a 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
jake123jake123 0:ba71558a5d0a 8 copies of the Software, and to permit persons to whom the Software is
jake123jake123 0:ba71558a5d0a 9 furnished to do so, subject to the following conditions:
jake123jake123 0:ba71558a5d0a 10
jake123jake123 0:ba71558a5d0a 11 The above copyright notice and this permission notice shall be included in all
jake123jake123 0:ba71558a5d0a 12 copies or substantial portions of the Software.
jake123jake123 0:ba71558a5d0a 13
jake123jake123 0:ba71558a5d0a 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
jake123jake123 0:ba71558a5d0a 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
jake123jake123 0:ba71558a5d0a 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
jake123jake123 0:ba71558a5d0a 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
jake123jake123 0:ba71558a5d0a 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
jake123jake123 0:ba71558a5d0a 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
jake123jake123 0:ba71558a5d0a 20 SOFTWARE.
jake123jake123 0:ba71558a5d0a 21 */
jake123jake123 0:ba71558a5d0a 22
jake123jake123 0:ba71558a5d0a 23 #ifndef TMPx75_h
jake123jake123 0:ba71558a5d0a 24 #define TMPx75_h
jake123jake123 0:ba71558a5d0a 25
jake123jake123 0:ba71558a5d0a 26 #include "mbed.h"
jake123jake123 0:ba71558a5d0a 27
jake123jake123 0:ba71558a5d0a 28 /*
jake123jake123 0:ba71558a5d0a 29 Library for TMP175 and TMP75 Temperature Sensors
jake123jake123 0:ba71558a5d0a 30 For reference, read the datasheet: http://www.ti.com/lit/ds/symlink/tmp75.pdf
jake123jake123 0:ba71558a5d0a 31
jake123jake123 0:ba71558a5d0a 32 I2C ADDR (TMP75): 1 0 0 1 A2 A1 A0 (1001000 = 0x48)
jake123jake123 0:ba71558a5d0a 33 */
jake123jake123 0:ba71558a5d0a 34
jake123jake123 0:ba71558a5d0a 35 #define TEMPERATURE_REGISTER 0x00
jake123jake123 0:ba71558a5d0a 36 #define CONFIGURATION_REGISTER 0x01
jake123jake123 0:ba71558a5d0a 37 #define T_LOW_REGISTER 0x02
jake123jake123 0:ba71558a5d0a 38 #define T_HIGH_REGISTER 0x03
jake123jake123 0:ba71558a5d0a 39
jake123jake123 0:ba71558a5d0a 40 //COnfiguration Register
jake123jake123 0:ba71558a5d0a 41 //Register Byte: OS R1 R0 F1 F0 POL TM SD
jake123jake123 0:ba71558a5d0a 42
jake123jake123 0:ba71558a5d0a 43 //Default: continuous, comparator, high to low, 1 fault, 9 bits
jake123jake123 0:ba71558a5d0a 44 #define DEFAULT_CONFIG 0x00
jake123jake123 0:ba71558a5d0a 45
jake123jake123 0:ba71558a5d0a 46 //Shutdown Mode (SD)
jake123jake123 0:ba71558a5d0a 47 #define CONTINUOUS_MODE 0x00
jake123jake123 0:ba71558a5d0a 48 #define SHUTDOWN_MODE 0x01
jake123jake123 0:ba71558a5d0a 49
jake123jake123 0:ba71558a5d0a 50 //Thermostat Mode (TM)
jake123jake123 0:ba71558a5d0a 51 #define COMPARATOR_MODE 0x00
jake123jake123 0:ba71558a5d0a 52 #define INTERRUPT_MODE 0x02
jake123jake123 0:ba71558a5d0a 53
jake123jake123 0:ba71558a5d0a 54 //Polarity (POL)
jake123jake123 0:ba71558a5d0a 55 #define HIGH_TO_LOW_POL 0x00
jake123jake123 0:ba71558a5d0a 56 #define LOW_TO_HIGH_POL 0x04
jake123jake123 0:ba71558a5d0a 57
jake123jake123 0:ba71558a5d0a 58 //Fault Queue (F1/F0)
jake123jake123 0:ba71558a5d0a 59 #define CONSECUTIVE_FAULTS_1 0x00
jake123jake123 0:ba71558a5d0a 60 #define CONSECUTIVE_FAULTS_2 0x08
jake123jake123 0:ba71558a5d0a 61 #define CONSECUTIVE_FAULTS_4 0x10
jake123jake123 0:ba71558a5d0a 62 #define CONSECUTIVE_FAULTS_6 0x18
jake123jake123 0:ba71558a5d0a 63
jake123jake123 0:ba71558a5d0a 64 //Converter Resolution (R1/R0)
jake123jake123 0:ba71558a5d0a 65 #define RESOLUTION_9_BITS 0x00 // (0.5°C) 27.5 ms
jake123jake123 0:ba71558a5d0a 66 #define RESOLUTION_10_BITS 0x20 // (0.25°C) 55 ms
jake123jake123 0:ba71558a5d0a 67 #define RESOLUTION_11_BITS 0x40 // (0.125°C) 110 ms
jake123jake123 0:ba71558a5d0a 68 #define RESOLUTION_12_BITS 0x60 // (0.0625°C) 220 ms
jake123jake123 0:ba71558a5d0a 69
jake123jake123 0:ba71558a5d0a 70 //One-Shot (OS)
jake123jake123 0:ba71558a5d0a 71 #define ONE_SHOT_MODE 0x80
jake123jake123 0:ba71558a5d0a 72
jake123jake123 0:ba71558a5d0a 73
jake123jake123 0:ba71558a5d0a 74 class TMPx75
jake123jake123 0:ba71558a5d0a 75 {
jake123jake123 0:ba71558a5d0a 76 public:
jake123jake123 0:ba71558a5d0a 77 TMPx75(I2C *i2c, uint8_t i2c_addr);
jake123jake123 0:ba71558a5d0a 78 virtual ~TMPx75();
jake123jake123 0:ba71558a5d0a 79 Serial pc;
jake123jake123 0:ba71558a5d0a 80
jake123jake123 0:ba71558a5d0a 81 float read_temperature();
jake123jake123 0:ba71558a5d0a 82 int read_configuration();
jake123jake123 0:ba71558a5d0a 83 void write_configuration(uint8_t config_byte);
jake123jake123 0:ba71558a5d0a 84 float read_T_LOW();
jake123jake123 0:ba71558a5d0a 85 void write_T_LOW(float temp);
jake123jake123 0:ba71558a5d0a 86 float read_T_HIGH();
jake123jake123 0:ba71558a5d0a 87 void write_T_HIGH(float temp);
jake123jake123 0:ba71558a5d0a 88
jake123jake123 0:ba71558a5d0a 89 private:
jake123jake123 0:ba71558a5d0a 90 I2C *_i2c;
jake123jake123 0:ba71558a5d0a 91 uint8_t _i2c_addr;
jake123jake123 0:ba71558a5d0a 92 };
jake123jake123 0:ba71558a5d0a 93
jake123jake123 0:ba71558a5d0a 94 #endif
jake123jake123 0:ba71558a5d0a 95
jake123jake123 1:ba7de6d38992 96 /*
jake123jake123 1:ba7de6d38992 97 // Example program for reading and writing to the TMPx75 temperature sensor
jake123jake123 1:ba7de6d38992 98 // Jacobus L de Jager 2018
jake123jake123 1:ba7de6d38992 99
jake123jake123 1:ba7de6d38992 100 #include "mbed.h"
jake123jake123 1:ba7de6d38992 101 #include "TMPx75.h"
jake123jake123 1:ba7de6d38992 102
jake123jake123 1:ba7de6d38992 103 Serial pc(SERIAL_TX, SERIAL_RX, 115200);
jake123jake123 1:ba7de6d38992 104 I2C i2c(I2C_SDA,I2C_SCL);
jake123jake123 1:ba7de6d38992 105 TMPx75 tmp75(&i2c, 0x48);
jake123jake123 1:ba7de6d38992 106
jake123jake123 1:ba7de6d38992 107 int main()
jake123jake123 1:ba7de6d38992 108 {
jake123jake123 1:ba7de6d38992 109 printf("\nTMPx75 example\n");
jake123jake123 1:ba7de6d38992 110
jake123jake123 1:ba7de6d38992 111 while(1)
jake123jake123 1:ba7de6d38992 112 {
jake123jake123 1:ba7de6d38992 113 pc.printf("\nreading temperature\n");
jake123jake123 1:ba7de6d38992 114 float temp = tmp75.read_temperature();
jake123jake123 1:ba7de6d38992 115 printf("temp = %f\n", temp);
jake123jake123 1:ba7de6d38992 116
jake123jake123 1:ba7de6d38992 117 pc.printf("writing config\n");
jake123jake123 1:ba7de6d38992 118 tmp75.write_configuration(RESOLUTION_12_BITS);
jake123jake123 1:ba7de6d38992 119
jake123jake123 1:ba7de6d38992 120 pc.printf("reading config\n");
jake123jake123 1:ba7de6d38992 121 int config = tmp75.read_configuration();
jake123jake123 1:ba7de6d38992 122 printf("config register = 0x%x\n", config);
jake123jake123 1:ba7de6d38992 123
jake123jake123 1:ba7de6d38992 124 pc.printf("reading T LOW\n");
jake123jake123 1:ba7de6d38992 125 float T_LOW = tmp75.read_T_LOW();
jake123jake123 1:ba7de6d38992 126 printf("T LOW = %f\n", temp);
jake123jake123 1:ba7de6d38992 127
jake123jake123 1:ba7de6d38992 128 pc.printf("reading T HIGH\n");
jake123jake123 1:ba7de6d38992 129 float T_HIGH = tmp75.read_T_HIGH();
jake123jake123 1:ba7de6d38992 130 printf("T HIGH = %f\n", temp);
jake123jake123 1:ba7de6d38992 131
jake123jake123 1:ba7de6d38992 132 pc.printf("writing T LOW\n");
jake123jake123 1:ba7de6d38992 133 tmp75.write_T_LOW(25);
jake123jake123 1:ba7de6d38992 134
jake123jake123 1:ba7de6d38992 135 pc.printf("writing T HIGH\n");
jake123jake123 1:ba7de6d38992 136 tmp75.write_T_HIGH(50);
jake123jake123 1:ba7de6d38992 137
jake123jake123 1:ba7de6d38992 138 printf("done!\n");
jake123jake123 1:ba7de6d38992 139
jake123jake123 1:ba7de6d38992 140 wait(0.5);
jake123jake123 1:ba7de6d38992 141 }
jake123jake123 1:ba7de6d38992 142 }
jake123jake123 1:ba7de6d38992 143
jake123jake123 1:ba7de6d38992 144 */