Maxim Integrated / Mbed OS MAX31723_Thermostat_Thermometer_Sensor

Example host software for the Maxim Integrated MAX31723/MAX31722 Device Temperature Sensor. Hosted on the MAX32630FTHR. The MAX31723 may be used in thermostats, thermometers, and hardware temperature supervisors.

Dependencies:   MAX31723_Digital_Temperature_Sensor max32630fthr USBDevice

main.cpp@8:5bbefd9bce9f, 2019-01-27 (annotated)

Committer:
phonemacro
Date:
Sun Jan 27 00:22:32 2019 +0000
Revision:
8:5bbefd9bce9f
Parent:
7:bf8c91e28a3b
Child:
10:e315ecdb7bcd
Initial commit for one-shot temperature readings.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
phonemacro 0:a3f9ce6b99f5 1 /*******************************************************************************
phonemacro 8:5bbefd9bce9f 2 * Copyright (C) 2019 Maxim Integrated Products, Inc., All Rights Reserved.
phonemacro 0:a3f9ce6b99f5 3 *
phonemacro 0:a3f9ce6b99f5 4 * Permission is hereby granted, free of charge, to any person obtaining a
phonemacro 0:a3f9ce6b99f5 5 * copy of this software and associated documentation files (the "Software"),
phonemacro 0:a3f9ce6b99f5 6 * to deal in the Software without restriction, including without limitation
phonemacro 0:a3f9ce6b99f5 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
phonemacro 0:a3f9ce6b99f5 8 * and/or sell copies of the Software, and to permit persons to whom the
phonemacro 0:a3f9ce6b99f5 9 * Software is furnished to do so, subject to the following conditions:
phonemacro 0:a3f9ce6b99f5 10 *
phonemacro 0:a3f9ce6b99f5 11 * The above copyright notice and this permission notice shall be included
phonemacro 0:a3f9ce6b99f5 12 * in all copies or substantial portions of the Software.
phonemacro 0:a3f9ce6b99f5 13 *
phonemacro 0:a3f9ce6b99f5 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
phonemacro 0:a3f9ce6b99f5 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
phonemacro 0:a3f9ce6b99f5 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
phonemacro 0:a3f9ce6b99f5 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
phonemacro 0:a3f9ce6b99f5 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
phonemacro 0:a3f9ce6b99f5 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
phonemacro 0:a3f9ce6b99f5 20 * OTHER DEALINGS IN THE SOFTWARE.
phonemacro 0:a3f9ce6b99f5 21 *
phonemacro 0:a3f9ce6b99f5 22 * Except as contained in this notice, the name of Maxim Integrated
phonemacro 0:a3f9ce6b99f5 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
phonemacro 0:a3f9ce6b99f5 24 * Products, Inc. Branding Policy.
phonemacro 0:a3f9ce6b99f5 25 *
phonemacro 0:a3f9ce6b99f5 26 * The mere transfer of this software does not imply any licenses
phonemacro 0:a3f9ce6b99f5 27 * of trade secrets, proprietary technology, copyrights, patents,
phonemacro 0:a3f9ce6b99f5 28 * trademarks, maskwork rights, or any other form of intellectual
phonemacro 0:a3f9ce6b99f5 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
phonemacro 0:a3f9ce6b99f5 30 * ownership rights.
phonemacro 0:a3f9ce6b99f5 31 *******************************************************************************
phonemacro 0:a3f9ce6b99f5 32 */
phonemacro 0:a3f9ce6b99f5 33 #include "mbed.h"
phonemacro 0:a3f9ce6b99f5 34 #include "max32630fthr.h"
phonemacro 8:5bbefd9bce9f 35 #include "max31723.h"
phonemacro 0:a3f9ce6b99f5 36 #include "USBSerial.h"
phonemacro 0:a3f9ce6b99f5 37
phonemacro 0:a3f9ce6b99f5 38 MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
phonemacro 0:a3f9ce6b99f5 39
phonemacro 0:a3f9ce6b99f5 40 DigitalOut rLED(LED1);
phonemacro 0:a3f9ce6b99f5 41 DigitalOut gLED(LED2);
phonemacro 0:a3f9ce6b99f5 42 DigitalOut bLED(LED3);
phonemacro 1:a7990c969d1a 43
phonemacro 8:5bbefd9bce9f 44 DigitalOut selectPin(P3_0); /* Pin 3_0 is used to drive chip enable low */
phonemacro 8:5bbefd9bce9f 45 SPI spi(P5_1, P5_2, P5_0); /* mosi, miso, sclk */
phonemacro 1:a7990c969d1a 46
phonemacro 8:5bbefd9bce9f 47
phonemacro 4:51c1a4c4f762 48 /** main() runs in its own thread in the OS */
phonemacro 4:51c1a4c4f762 49 /** (note the calls to Thread::wait below for delays) */
phonemacro 2:07fde4ba8e91 50 /**
phonemacro 8:5bbefd9bce9f 51 * @brief Sample main program for Maxim Integrated MAX31723
phonemacro 8:5bbefd9bce9f 52 * @version 1.0000.0000
phonemacro 4:51c1a4c4f762 53 *
phonemacro 8:5bbefd9bce9f 54 * @details Sample main program for MAX31723/MAX31722
phonemacro 4:51c1a4c4f762 55 * The prints are sent to the terminal window (9600, 8n1).
phonemacro 8:5bbefd9bce9f 56 * The program configures the SPI buss and then it performs
phonemacro 8:5bbefd9bce9f 57 * 5 one shot readings.
phonemacro 8:5bbefd9bce9f 58 * The program then blinks the green LED.
phonemacro 4:51c1a4c4f762 59 * To run the program, drag and drop the .bin file into the
phonemacro 4:51c1a4c4f762 60 * DAPLINK folder. After it finishes flashing, cycle the power or
phonemacro 4:51c1a4c4f762 61 * reset the Pegasus (MAX32630FTHR) after flashing by pressing the button on
phonemacro 4:51c1a4c4f762 62 * the Pegasus next to the battery connector or the button
phonemacro 4:51c1a4c4f762 63 * on the MAXREFDES100HDK.
phonemacro 4:51c1a4c4f762 64 */
phonemacro 8:5bbefd9bce9f 65
phonemacro 8:5bbefd9bce9f 66
phonemacro 0:a3f9ce6b99f5 67 int main()
phonemacro 0:a3f9ce6b99f5 68 {
phonemacro 0:a3f9ce6b99f5 69 int ret, i;
phonemacro 8:5bbefd9bce9f 70 float temperature;
phonemacro 0:a3f9ce6b99f5 71 DigitalOut rLED(LED1, LED_OFF);
phonemacro 0:a3f9ce6b99f5 72 DigitalOut gLED(LED2, LED_OFF);
phonemacro 0:a3f9ce6b99f5 73 DigitalOut bLED(LED3, LED_OFF);
phonemacro 0:a3f9ce6b99f5 74
phonemacro 0:a3f9ce6b99f5 75 gLED = LED_ON;
phonemacro 0:a3f9ce6b99f5 76
phonemacro 8:5bbefd9bce9f 77 MAX31723 max31723_temp(spi, selectPin);
phonemacro 8:5bbefd9bce9f 78 spi.format(8,3); /* 8-bit, SPI mode 3 */
phonemacro 8:5bbefd9bce9f 79 spi.frequency(5000000); /* Use 5 MHz SPI bus */
phonemacro 8:5bbefd9bce9f 80 /* Jumpers (JP1) on MAX31723PMB should be set to SPI mode configuration
phonemacro 8:5bbefd9bce9f 81 * or SERMODE pin should be set to VDD for SPI mode
phonemacro 8:5bbefd9bce9f 82 */
phonemacro 0:a3f9ce6b99f5 83
phonemacro 8:5bbefd9bce9f 84 for (i = 0; i < 5; i++) {
phonemacro 8:5bbefd9bce9f 85 ret = max31723_temp.perform_one_shot(MAX31723_CONV_TIME_MSEC_12BIT);
phonemacro 8:5bbefd9bce9f 86 wait(MAX31723_CONV_TIME_MSEC_12BIT);
phonemacro 8:5bbefd9bce9f 87 temperature = max31723_temp.read_temp();
phonemacro 8:5bbefd9bce9f 88 printf("Temperature = %4.4f Celsius, %4.4f Fahrenheit\r\n",
phonemacro 8:5bbefd9bce9f 89 temperature, max31723_temp.celsius_to_fahrenheit(temperature));
phonemacro 8:5bbefd9bce9f 90 wait(2);
phonemacro 8:5bbefd9bce9f 91 }
phonemacro 7:bf8c91e28a3b 92 printf("\r\n");
phonemacro 8:5bbefd9bce9f 93 while (true) { // Blink the green LED
phonemacro 0:a3f9ce6b99f5 94 gLED = !gLED;
phonemacro 0:a3f9ce6b99f5 95 wait(1.0);
phonemacro 0:a3f9ce6b99f5 96 }
phonemacro 0:a3f9ce6b99f5 97 }