Maxim Integrated / Mbed OS DS1775_Digital_Thermostat_Temperature

Sample host software for the Maxim Integrated DS1775, DS75 Digital Thermometer Thermostat IC hosted on the MAX32630FTHR. The DS1775 is suitable for PCs, cell phones, and other thermally sensitive systems.

Dependencies:   max32630fthr DS1775_Digitial_Thermometer_Thermostat USBDevice

main.cpp@16:1ebf8a6248be, 2019-04-09 (annotated)

Committer:
phonemacro
Date:
Tue Apr 09 06:38:05 2019 +0000
Revision:
16:1ebf8a6248be
Parent:
14:8ca56fd6b35e
Child:
17:7de7da8c21c3
updated comments

Who changed what in which revision?

UserRevisionLine numberNew contents of line
phonemacro 0:252077cb2ac5 1 /*******************************************************************************
phonemacro 0:252077cb2ac5 2 * Copyright (C) 2019 Maxim Integrated Products, Inc., All Rights Reserved.
phonemacro 0:252077cb2ac5 3 *
phonemacro 0:252077cb2ac5 4 * Permission is hereby granted, free of charge, to any person obtaining a
phonemacro 0:252077cb2ac5 5 * copy of this software and associated documentation files (the "Software"),
phonemacro 0:252077cb2ac5 6 * to deal in the Software without restriction, including without limitation
phonemacro 0:252077cb2ac5 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
phonemacro 0:252077cb2ac5 8 * and/or sell copies of the Software, and to permit persons to whom the
phonemacro 0:252077cb2ac5 9 * Software is furnished to do so, subject to the following conditions:
phonemacro 0:252077cb2ac5 10 *
phonemacro 0:252077cb2ac5 11 * The above copyright notice and this permission notice shall be included
phonemacro 0:252077cb2ac5 12 * in all copies or substantial portions of the Software.
phonemacro 0:252077cb2ac5 13 *
phonemacro 0:252077cb2ac5 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
phonemacro 0:252077cb2ac5 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
phonemacro 0:252077cb2ac5 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
phonemacro 0:252077cb2ac5 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
phonemacro 0:252077cb2ac5 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
phonemacro 0:252077cb2ac5 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
phonemacro 0:252077cb2ac5 20 * OTHER DEALINGS IN THE SOFTWARE.
phonemacro 0:252077cb2ac5 21 *
phonemacro 0:252077cb2ac5 22 * Except as contained in this notice, the name of Maxim Integrated
phonemacro 0:252077cb2ac5 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
phonemacro 0:252077cb2ac5 24 * Products, Inc. Branding Policy.
phonemacro 0:252077cb2ac5 25 *
phonemacro 0:252077cb2ac5 26 * The mere transfer of this software does not imply any licenses
phonemacro 0:252077cb2ac5 27 * of trade secrets, proprietary technology, copyrights, patents,
phonemacro 0:252077cb2ac5 28 * trademarks, maskwork rights, or any other form of intellectual
phonemacro 0:252077cb2ac5 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
phonemacro 0:252077cb2ac5 30 * ownership rights.
phonemacro 0:252077cb2ac5 31 *******************************************************************************
phonemacro 0:252077cb2ac5 32 */
phonemacro 0:252077cb2ac5 33 #include "mbed.h"
phonemacro 0:252077cb2ac5 34 #include "max32630fthr.h"
phonemacro 1:72ad3ee71812 35 #include "ds1775.h"
phonemacro 1:72ad3ee71812 36 #include "ds1775_cpp.h"
phonemacro 0:252077cb2ac5 37 #include "USBSerial.h"
phonemacro 0:252077cb2ac5 38
phonemacro 0:252077cb2ac5 39 MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
phonemacro 0:252077cb2ac5 40
phonemacro 0:252077cb2ac5 41 DigitalOut rLED(LED1);
phonemacro 0:252077cb2ac5 42 DigitalOut gLED(LED2);
phonemacro 0:252077cb2ac5 43 DigitalOut bLED(LED3);
phonemacro 0:252077cb2ac5 44
phonemacro 0:252077cb2ac5 45 I2C i2cBus(P3_4, P3_5);
phonemacro 0:252077cb2ac5 46
phonemacro 0:252077cb2ac5 47 // main() runs in its own thread in the OS
phonemacro 0:252077cb2ac5 48 // (note the calls to Thread::wait below for delays)
phonemacro 0:252077cb2ac5 49 /**
phonemacro 1:72ad3ee71812 50 * @brief Sample main program for DS1775
phonemacro 14:8ca56fd6b35e 51 * @version 1.0000.0002
phonemacro 0:252077cb2ac5 52 *
phonemacro 1:72ad3ee71812 53 * @details Sample main program for DS1775
phonemacro 0:252077cb2ac5 54 * The prints are sent to the terminal window (9600, 8n1).
phonemacro 1:72ad3ee71812 55 * The program sets the GPIOs to 3.3V and the program
phonemacro 0:252077cb2ac5 56 * configures the chip and reads temperatures.
phonemacro 0:252077cb2ac5 57 * To run the program, drag and drop the .bin file into the
phonemacro 0:252077cb2ac5 58 * DAPLINK folder. After it finishes flashing, cycle the power or
phonemacro 0:252077cb2ac5 59 * reset the Pegasus (MAX32630FTHR) after flashing by pressing the button on
phonemacro 0:252077cb2ac5 60 * the Pegasus next to the battery connector or the button
phonemacro 0:252077cb2ac5 61 * on the MAXREFDES100HDK.
phonemacro 0:252077cb2ac5 62 */
phonemacro 0:252077cb2ac5 63 int main()
phonemacro 0:252077cb2ac5 64 {
phonemacro 0:252077cb2ac5 65 uint32_t i;
phonemacro 0:252077cb2ac5 66 float temperature;
phonemacro 2:aa39032bf778 67 uint8_t cfg;
phonemacro 0:252077cb2ac5 68 DigitalOut rLED(LED1, LED_OFF);
phonemacro 0:252077cb2ac5 69 DigitalOut gLED(LED2, LED_OFF);
phonemacro 0:252077cb2ac5 70 DigitalOut bLED(LED3, LED_OFF);
phonemacro 0:252077cb2ac5 71 gLED = LED_ON;
phonemacro 5:af38bfffd6d3 72 printf("DS1775 DS75 Digital Thermometer and "
phonemacro 5:af38bfffd6d3 73 "Thermostat example source code.\r\n");
phonemacro 0:252077cb2ac5 74 printf("\r\n");
phonemacro 0:252077cb2ac5 75
phonemacro 1:72ad3ee71812 76 DS1775 temp_sensor(i2cBus, DS1775_I2C_SLAVE_ADR_R0);
phonemacro 0:252077cb2ac5 77 i2cBus.frequency(400000);
phonemacro 2:aa39032bf778 78 /* Configure for 9 bit resolution, fault filter 1,
phonemacro 2:aa39032bf778 79 active low, comparator, continuous,
phonemacro 0:252077cb2ac5 80 */
phonemacro 11:505d7cf8587a 81 temp_sensor.write_cfg_reg(uint8_t(DS1775_CFG_RESOLUTION_9BIT |
phonemacro 2:aa39032bf778 82 DS1775_CFG_FAULT_FILTER_6 | DS1775_CFG_OS_POLARITY_ACT_LOW |
phonemacro 2:aa39032bf778 83 DS1775_CFG_COMPARATOR_MODE | DS1775_CFG_CONTINUOUS));
phonemacro 0:252077cb2ac5 84 for (i = 0; i < 10; i++) {
phonemacro 1:72ad3ee71812 85 wait(DS1775_WAIT_CONV_TIME_9BIT);
phonemacro 5:af38bfffd6d3 86 temperature =
phonemacro 5:af38bfffd6d3 87 temp_sensor.read_reg_as_temperature(DS1775_REG_TEMPERATURE);
phonemacro 0:252077cb2ac5 88 printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 89 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 90 }
phonemacro 2:aa39032bf778 91 temp_sensor.read_cfg_reg(&cfg);
phonemacro 2:aa39032bf778 92 printf("Configuration Register = 0x%02Xh \r\n", cfg);
phonemacro 2:aa39032bf778 93
phonemacro 9:a22549dfaf5f 94 #if 0
phonemacro 14:8ca56fd6b35e 95 temp_sensor.write_trip_low_thyst(-63.9375);
phonemacro 5:af38bfffd6d3 96 temperature =
phonemacro 5:af38bfffd6d3 97 temp_sensor.read_reg_as_temperature(DS1775_REG_THYST_LOW_TRIP);
phonemacro 0:252077cb2ac5 98 printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 99 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 100
phonemacro 14:8ca56fd6b35e 101 temp_sensor.write_trip_high_tos(64.0625f);
phonemacro 1:72ad3ee71812 102 temperature = temp_sensor.read_reg_as_temperature(DS1775_REG_TOS_HIGH_TRIP);
phonemacro 0:252077cb2ac5 103 printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 104 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 105 printf("\r\n\r\n");
phonemacro 0:252077cb2ac5 106 #endif
phonemacro 0:252077cb2ac5 107
phonemacro 0:252077cb2ac5 108 printf("\r\n");
phonemacro 0:252077cb2ac5 109
phonemacro 2:aa39032bf778 110 for (i = 0; i < 8; i++) {
phonemacro 16:1ebf8a6248be 111 /* Configure for 12 bit resolution, fault filter 6,
phonemacro 2:aa39032bf778 112 active low, interrupt, continous,
phonemacro 2:aa39032bf778 113 */
phonemacro 11:505d7cf8587a 114 temp_sensor.write_cfg_reg(uint8_t(DS1775_CFG_RESOLUTION_12BIT |
phonemacro 2:aa39032bf778 115 DS1775_CFG_FAULT_FILTER_6 | DS1775_CFG_OS_POLARITY_ACT_LOW |
phonemacro 2:aa39032bf778 116 DS1775_CFG_INTERRUPT_MODE | DS1775_CFG_CONTINUOUS));
phonemacro 2:aa39032bf778 117 wait(DS1775_WAIT_CONV_TIME_9BIT);
phonemacro 5:af38bfffd6d3 118 temperature =
phonemacro 5:af38bfffd6d3 119 temp_sensor.read_reg_as_temperature(DS1775_REG_TEMPERATURE);
phonemacro 0:252077cb2ac5 120 printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 121 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 11:505d7cf8587a 122 temp_sensor.write_cfg_reg(uint8_t(DS1775_CFG_RESOLUTION_12BIT |
phonemacro 2:aa39032bf778 123 DS1775_CFG_FAULT_FILTER_6 | DS1775_CFG_OS_POLARITY_ACT_LOW |
phonemacro 2:aa39032bf778 124 DS1775_CFG_INTERRUPT_MODE | DS1775_CFG_SHUTDOWN));
phonemacro 2:aa39032bf778 125 wait(2); /* leave it in shutdown mode for a while */
phonemacro 0:252077cb2ac5 126 }
phonemacro 2:aa39032bf778 127 temp_sensor.read_cfg_reg(&cfg);
phonemacro 2:aa39032bf778 128 printf("Configuration Register = 0x%02Xh \r\n", cfg);
phonemacro 0:252077cb2ac5 129
phonemacro 0:252077cb2ac5 130 printf("\r\n\r\n");
phonemacro 0:252077cb2ac5 131
phonemacro 9:a22549dfaf5f 132 #if 0
phonemacro 14:8ca56fd6b35e 133 temp_sensor.write_trip_low_thyst(-55.0f);
phonemacro 5:af38bfffd6d3 134 temperature =
phonemacro 5:af38bfffd6d3 135 temp_sensor.read_reg_as_temperature(DS1775_REG_THYST_LOW_TRIP);
phonemacro 0:252077cb2ac5 136 printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 137 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 138
phonemacro 14:8ca56fd6b35e 139 temp_sensor.write_trip_high_tos(125.0f);
phonemacro 1:72ad3ee71812 140 temperature = temp_sensor.read_reg_as_temperature(DS1775_REG_TOS_HIGH_TRIP);
phonemacro 0:252077cb2ac5 141 printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 142 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 143 printf("\r\n\r\n");
phonemacro 0:252077cb2ac5 144 #endif
phonemacro 5:af38bfffd6d3 145
phonemacro 0:252077cb2ac5 146 /***************************************************************************
phonemacro 0:252077cb2ac5 147 * Call the C code version of the driver
phonemacro 0:252077cb2ac5 148 ***************************************************************************
phonemacro 0:252077cb2ac5 149 */
phonemacro 1:72ad3ee71812 150 #include "ds1775_c.h"
phonemacro 0:252077cb2ac5 151 printf("C implementation of the code\r\n");
phonemacro 1:72ad3ee71812 152 ds1775_init(DS1775_I2C_SLAVE_ADR_R0);
phonemacro 4:d3171636a86b 153 /* Configure for 9 bit resolution, fault filter 1,
phonemacro 4:d3171636a86b 154 active low, comparator, continuous,
phonemacro 0:252077cb2ac5 155 */
phonemacro 4:d3171636a86b 156 ds1775_write_cfg_reg(uint8_t(DS1775_CFG_RESOLUTION_9BIT |
phonemacro 4:d3171636a86b 157 DS1775_CFG_FAULT_FILTER_6 | DS1775_CFG_OS_POLARITY_ACT_LOW |
phonemacro 4:d3171636a86b 158 DS1775_CFG_COMPARATOR_MODE | DS1775_CFG_CONTINUOUS), i2cBus);
phonemacro 0:252077cb2ac5 159 for (i = 0; i < 10; i++) {
phonemacro 4:d3171636a86b 160 wait(DS1775_WAIT_CONV_TIME_9BIT);
phonemacro 1:72ad3ee71812 161 temperature = ds1775_read_reg_as_temperature(DS1775_REG_TEMPERATURE,
phonemacro 0:252077cb2ac5 162 i2cBus);
phonemacro 0:252077cb2ac5 163 printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 164 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 165 }
phonemacro 4:d3171636a86b 166
phonemacro 4:d3171636a86b 167 ds1775_read_cfg_reg(&cfg, i2cBus);
phonemacro 5:af38bfffd6d3 168 printf("Configuration Register = 0x%02Xh \r\n", cfg);
phonemacro 0:252077cb2ac5 169
phonemacro 9:a22549dfaf5f 170 #if 0
phonemacro 14:8ca56fd6b35e 171 ds1775_write_trip_low_thyst(-63.9375, i2cBus);
phonemacro 5:af38bfffd6d3 172 temperature = ds1775_read_reg_as_temperature(DS1775_REG_THYST_LOW_TRIP,
phonemacro 5:af38bfffd6d3 173 i2cBus);
phonemacro 0:252077cb2ac5 174 printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 1:72ad3ee71812 175 temperature, ds1775_celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 176
phonemacro 14:8ca56fd6b35e 177 ds1775_write_trip_high_tos(64.0625f, i2cBus);
phonemacro 5:af38bfffd6d3 178 temperature = ds1775_read_reg_as_temperature(DS1775_REG_TOS_HIGH_TRIP,
phonemacro 5:af38bfffd6d3 179 i2cBus);
phonemacro 0:252077cb2ac5 180 printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 1:72ad3ee71812 181 temperature, ds1775_celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 182 #endif
phonemacro 0:252077cb2ac5 183
phonemacro 0:252077cb2ac5 184 printf("\r\n");
phonemacro 5:af38bfffd6d3 185 for (i = 0; i < 8; i++) {
phonemacro 16:1ebf8a6248be 186 /* Configure for 12 bit resolution, fault filter 6,
phonemacro 5:af38bfffd6d3 187 active low, interrupt, continous,
phonemacro 5:af38bfffd6d3 188 */
phonemacro 5:af38bfffd6d3 189 ds1775_write_cfg_reg(uint8_t(DS1775_CFG_RESOLUTION_12BIT |
phonemacro 5:af38bfffd6d3 190 DS1775_CFG_FAULT_FILTER_6 | DS1775_CFG_OS_POLARITY_ACT_LOW |
phonemacro 5:af38bfffd6d3 191 DS1775_CFG_INTERRUPT_MODE | DS1775_CFG_CONTINUOUS),
phonemacro 0:252077cb2ac5 192 i2cBus);
phonemacro 5:af38bfffd6d3 193 wait(DS1775_WAIT_CONV_TIME_9BIT);
phonemacro 1:72ad3ee71812 194 temperature = ds1775_read_reg_as_temperature(DS1775_REG_TEMPERATURE,
phonemacro 0:252077cb2ac5 195 i2cBus);
phonemacro 0:252077cb2ac5 196 printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 197 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 5:af38bfffd6d3 198 ds1775_write_cfg_reg(uint8_t(DS1775_CFG_RESOLUTION_12BIT |
phonemacro 5:af38bfffd6d3 199 DS1775_CFG_FAULT_FILTER_6 | DS1775_CFG_OS_POLARITY_ACT_LOW |
phonemacro 5:af38bfffd6d3 200 DS1775_CFG_INTERRUPT_MODE | DS1775_CFG_SHUTDOWN), i2cBus);
phonemacro 5:af38bfffd6d3 201 wait(2); /* leave it in shutdown mode for a while */
phonemacro 0:252077cb2ac5 202 }
phonemacro 5:af38bfffd6d3 203 ds1775_read_cfg_reg(&cfg, i2cBus);
phonemacro 5:af38bfffd6d3 204 printf("Configuration Register = 0x%02Xh \r\n", cfg);
phonemacro 0:252077cb2ac5 205
phonemacro 9:a22549dfaf5f 206 #if 0
phonemacro 14:8ca56fd6b35e 207 ds1775_write_trip_low_thyst(-55, i2cBus);
phonemacro 5:af38bfffd6d3 208 temperature = ds1775_read_reg_as_temperature(DS1775_REG_THYST_LOW_TRIP,
phonemacro 5:af38bfffd6d3 209 i2cBus);
phonemacro 0:252077cb2ac5 210 printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 1:72ad3ee71812 211 temperature, ds1775_celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 212
phonemacro 14:8ca56fd6b35e 213 ds1775_write_trip_high_tos(125.0f, i2cBus);
phonemacro 5:af38bfffd6d3 214 temperature = ds1775_read_reg_as_temperature(DS1775_REG_TOS_HIGH_TRIP,
phonemacro 5:af38bfffd6d3 215 i2cBus);
phonemacro 0:252077cb2ac5 216 printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 1:72ad3ee71812 217 temperature, ds1775_celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 218 #endif
phonemacro 0:252077cb2ac5 219 printf("\r\n\r\n\r\n");
phonemacro 0:252077cb2ac5 220
phonemacro 0:252077cb2ac5 221
phonemacro 0:252077cb2ac5 222 while (true) { // Blink the green LED
phonemacro 0:252077cb2ac5 223 gLED = !gLED;
phonemacro 0:252077cb2ac5 224 wait(0.5);
phonemacro 0:252077cb2ac5 225 }
phonemacro 0:252077cb2ac5 226 }
phonemacro 0:252077cb2ac5 227
phonemacro 0:252077cb2ac5 228