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@1:72ad3ee71812, 2019-04-07 (annotated)

Committer:
phonemacro
Date:
Sun Apr 07 07:43:15 2019 +0000
Revision:
1:72ad3ee71812
Parent:
0:252077cb2ac5
Child:
2:aa39032bf778
update

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 0:252077cb2ac5 51 * @version 1.0000.0000
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 0:252077cb2ac5 67 uint16_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 1:72ad3ee71812 72 printf("DS1775 DS75 Digital Thermometer and Thermostat example source code.\r\n");
phonemacro 0:252077cb2ac5 73 printf("\r\n");
phonemacro 0:252077cb2ac5 74
phonemacro 1:72ad3ee71812 75 DS1775 temp_sensor(i2cBus, DS1775_I2C_SLAVE_ADR_R0);
phonemacro 0:252077cb2ac5 76 i2cBus.frequency(400000);
phonemacro 0:252077cb2ac5 77
phonemacro 0:252077cb2ac5 78 /* Configure for fault filter 1, comparator, continuous,
phonemacro 0:252077cb2ac5 79 * normal format, 8 sps, 12 bit resolution
phonemacro 0:252077cb2ac5 80 */
phonemacro 0:252077cb2ac5 81 #if 0
phonemacro 1:72ad3ee71812 82 temp_sensor.write_cfg(uint16_t(DS1775_CFG_FAULT_FILTER_1 |
phonemacro 1:72ad3ee71812 83 DS1775_CFG_COMPARATOR_MODE | DS1775_CFG_CONTINUOUS |
phonemacro 1:72ad3ee71812 84 DS1775_CFG_NORMAL_FORMAT | DS1775_CFG_CONV_RATE_8 |
phonemacro 1:72ad3ee71812 85 DS1775_CFG_RESOLUTION_12BIT));
phonemacro 0:252077cb2ac5 86 #endif
phonemacro 0:252077cb2ac5 87 for (i = 0; i < 10; i++) {
phonemacro 1:72ad3ee71812 88 wait(DS1775_WAIT_CONV_TIME_9BIT);
phonemacro 1:72ad3ee71812 89 temperature = temp_sensor.read_reg_as_temperature(DS1775_REG_TEMPERATURE);
phonemacro 0:252077cb2ac5 90 printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 91 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 92 }
phonemacro 1:72ad3ee71812 93 temperature = temp_sensor.read_reg_as_temperature(DS1775_REG_TOS_HIGH_TRIP);
phonemacro 0:252077cb2ac5 94 printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 95 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 96 #if 0
phonemacro 1:72ad3ee71812 97 temp_sensor.read_reg(&cfg, DS1775_REG_CONFIGURATION);
phonemacro 0:252077cb2ac5 98 printf("Configuration Register = 0x%04Xh \r\n", cfg);
phonemacro 0:252077cb2ac5 99 #if 0
phonemacro 0:252077cb2ac5 100 temp_sensor.write_trip_low(-63.9375);
phonemacro 0:252077cb2ac5 101 wait(0.03);
phonemacro 1:72ad3ee71812 102 temperature = temp_sensor.read_reg_as_temperature(DS1775_REG_THYST_LOW_TRIP);
phonemacro 0:252077cb2ac5 103 printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 104 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 105
phonemacro 0:252077cb2ac5 106 temp_sensor.write_trip_high(64.0625f);
phonemacro 0:252077cb2ac5 107 wait(0.03);
phonemacro 1:72ad3ee71812 108 temperature = temp_sensor.read_reg_as_temperature(DS1775_REG_TOS_HIGH_TRIP);
phonemacro 0:252077cb2ac5 109 printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 110 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 111 printf("\r\n\r\n");
phonemacro 0:252077cb2ac5 112 #endif
phonemacro 0:252077cb2ac5 113
phonemacro 0:252077cb2ac5 114 printf("\r\n");
phonemacro 0:252077cb2ac5 115
phonemacro 0:252077cb2ac5 116 /* Configure for fault filter 4, interrupt, shutdown,
phonemacro 0:252077cb2ac5 117 * extended format, 0.25 sps, 10 bit resolution, start one-shot
phonemacro 0:252077cb2ac5 118 */
phonemacro 0:252077cb2ac5 119 for (i = 0; i < 2; i++) {
phonemacro 1:72ad3ee71812 120 temp_sensor.write_cfg(uint16_t(DS1775_CFG_FAULT_FILTER_4 |
phonemacro 1:72ad3ee71812 121 DS1775_CFG_INTERRUPT_MODE | DS1775_CFG_SHUTDOWN |
phonemacro 1:72ad3ee71812 122 DS1775_CFG_EXTENDED_FORMAT| DS1775_CFG_CONV_RATE_0_25 |
phonemacro 1:72ad3ee71812 123 DS1775_CFG_RESOLUTION_10BIT | DS1775_CFG_ONE_SHOT_START));
phonemacro 1:72ad3ee71812 124 wait(DS1775_WAIT_CONV_RATE_0_25);
phonemacro 1:72ad3ee71812 125 temperature = temp_sensor.read_reg_as_temperature(DS1775_REG_TEMPERATURE);
phonemacro 0:252077cb2ac5 126 printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 127 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 128 }
phonemacro 1:72ad3ee71812 129 temp_sensor.read_reg(&cfg, DS1775_REG_CONFIGURATION);
phonemacro 0:252077cb2ac5 130 printf("Configuration Register = 0x%04Xh \r\n", cfg);
phonemacro 0:252077cb2ac5 131
phonemacro 0:252077cb2ac5 132 printf("\r\n\r\n");
phonemacro 0:252077cb2ac5 133
phonemacro 0:252077cb2ac5 134 #if 0
phonemacro 0:252077cb2ac5 135 temp_sensor.write_trip_low(-127.9375);
phonemacro 0:252077cb2ac5 136 wait(0.03);
phonemacro 1:72ad3ee71812 137 temp_sensor.read_reg(&cfg, DS1775_REG_CONFIGURATION);
phonemacro 1:72ad3ee71812 138 temperature = temp_sensor.read_reg_as_temperature(DS1775_REG_THYST_LOW_TRIP);
phonemacro 0:252077cb2ac5 139 printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 140 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 141
phonemacro 0:252077cb2ac5 142 temp_sensor.write_trip_high(129.0625f);
phonemacro 0:252077cb2ac5 143 wait(0.03);
phonemacro 1:72ad3ee71812 144 temperature = temp_sensor.read_reg_as_temperature(DS1775_REG_TOS_HIGH_TRIP);
phonemacro 0:252077cb2ac5 145 printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 146 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 147 printf("\r\n\r\n");
phonemacro 0:252077cb2ac5 148 #endif
phonemacro 0:252077cb2ac5 149
phonemacro 0:252077cb2ac5 150 /***************************************************************************
phonemacro 0:252077cb2ac5 151 * Call the C code version of the driver
phonemacro 0:252077cb2ac5 152 ***************************************************************************
phonemacro 0:252077cb2ac5 153 */
phonemacro 1:72ad3ee71812 154 #include "ds1775_c.h"
phonemacro 0:252077cb2ac5 155 printf("C implementation of the code\r\n");
phonemacro 1:72ad3ee71812 156 ds1775_init(DS1775_I2C_SLAVE_ADR_R0);
phonemacro 0:252077cb2ac5 157 /* Configure for fault filter 1, comparator, continuous,
phonemacro 0:252077cb2ac5 158 * normal format, 8 sps, 12 bit resolution
phonemacro 0:252077cb2ac5 159 */
phonemacro 1:72ad3ee71812 160 ds1775_write_cfg(uint16_t(DS1775_CFG_FAULT_FILTER_1 |
phonemacro 1:72ad3ee71812 161 DS1775_CFG_COMPARATOR_MODE | DS1775_CFG_CONTINUOUS |
phonemacro 1:72ad3ee71812 162 DS1775_CFG_NORMAL_FORMAT | DS1775_CFG_CONV_RATE_8 |
phonemacro 1:72ad3ee71812 163 DS1775_CFG_RESOLUTION_12BIT), i2cBus);
phonemacro 0:252077cb2ac5 164 for (i = 0; i < 10; i++) {
phonemacro 1:72ad3ee71812 165 wait(DS1775_WAIT_CONV_RATE_8);
phonemacro 1:72ad3ee71812 166 temperature = ds1775_read_reg_as_temperature(DS1775_REG_TEMPERATURE,
phonemacro 0:252077cb2ac5 167 i2cBus);
phonemacro 0:252077cb2ac5 168 printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 169 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 170 }
phonemacro 1:72ad3ee71812 171 ds1775_read_reg(&cfg, DS1775_REG_CONFIGURATION, i2cBus);
phonemacro 0:252077cb2ac5 172 printf("Configuration Register = 0x%04Xh \r\n", cfg);
phonemacro 0:252077cb2ac5 173
phonemacro 0:252077cb2ac5 174 #if 0
phonemacro 1:72ad3ee71812 175 ds1775_write_trip_low(-63.9375, i2cBus);
phonemacro 0:252077cb2ac5 176 wait(0.03);
phonemacro 1:72ad3ee71812 177 temperature = ds1775_read_reg_as_temperature(DS1775_REG_THYST_LOW_TRIP, i2cBus);
phonemacro 0:252077cb2ac5 178 printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 1:72ad3ee71812 179 temperature, ds1775_celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 180
phonemacro 1:72ad3ee71812 181 ds1775_write_trip_high(64.0625f, i2cBus);
phonemacro 0:252077cb2ac5 182 wait(0.03);
phonemacro 1:72ad3ee71812 183 temperature = ds1775_read_reg_as_temperature(DS1775_REG_TOS_HIGH_TRIP, i2cBus);
phonemacro 0:252077cb2ac5 184 printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 1:72ad3ee71812 185 temperature, ds1775_celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 186 #endif
phonemacro 0:252077cb2ac5 187
phonemacro 0:252077cb2ac5 188 printf("\r\n");
phonemacro 0:252077cb2ac5 189 for (i = 0; i < 2; i++) {
phonemacro 1:72ad3ee71812 190 ds1775_write_cfg(uint16_t(DS1775_CFG_FAULT_FILTER_4 |
phonemacro 1:72ad3ee71812 191 DS1775_CFG_INTERRUPT_MODE | DS1775_CFG_SHUTDOWN |
phonemacro 1:72ad3ee71812 192 DS1775_CFG_EXTENDED_FORMAT| DS1775_CFG_CONV_RATE_0_25 |
phonemacro 1:72ad3ee71812 193 DS1775_CFG_RESOLUTION_10BIT | DS1775_CFG_ONE_SHOT_START),
phonemacro 0:252077cb2ac5 194 i2cBus);
phonemacro 1:72ad3ee71812 195 wait(DS1775_WAIT_CONV_RATE_0_25);
phonemacro 1:72ad3ee71812 196 temperature = ds1775_read_reg_as_temperature(DS1775_REG_TEMPERATURE,
phonemacro 0:252077cb2ac5 197 i2cBus);
phonemacro 0:252077cb2ac5 198 printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 0:252077cb2ac5 199 temperature, temp_sensor.celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 200 }
phonemacro 1:72ad3ee71812 201 ds1775_read_reg(&cfg, DS1775_REG_CONFIGURATION, i2cBus);
phonemacro 0:252077cb2ac5 202 printf("Configuration Register = 0x%04Xh \r\n", cfg);
phonemacro 0:252077cb2ac5 203
phonemacro 0:252077cb2ac5 204 #if 0
phonemacro 0:252077cb2ac5 205 temp_sensor.write_trip_low(-127.9375);
phonemacro 1:72ad3ee71812 206 ds1775_write_trip_low(-127.9375, i2cBus);
phonemacro 0:252077cb2ac5 207 wait(0.03);
phonemacro 1:72ad3ee71812 208 temperature = ds1775_read_reg_as_temperature(DS1775_REG_THYST_LOW_TRIP, i2cBus);
phonemacro 0:252077cb2ac5 209 printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 1:72ad3ee71812 210 temperature, ds1775_celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 211
phonemacro 1:72ad3ee71812 212 ds1775_write_trip_high(129.0625f, i2cBus);
phonemacro 0:252077cb2ac5 213 wait(0.03);
phonemacro 1:72ad3ee71812 214 temperature = ds1775_read_reg_as_temperature(DS1775_REG_TOS_HIGH_TRIP, i2cBus);
phonemacro 0:252077cb2ac5 215 printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n",
phonemacro 1:72ad3ee71812 216 temperature, ds1775_celsius_to_fahrenheit(temperature));
phonemacro 0:252077cb2ac5 217 #endif
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