The MAX31725, MAX31726 temperature sensors provides temperature measurements with an accuracy of up to +-0.5°C. Extended format allows for high temperature readings up to 150°C. The MAX31725 can operate in a low powered mode by utilizing the shutdown and one-shot mode. Supports two-wire serial, I2C bus communications. 8-pin TQDFN 3x3 mm package. Accuracy is +-0.5°C from -40°C to +105°C (-40°F to +221°). The operating temperature range is -55°C to +150°C (-67°F to +302°). VDD is 2.5V to 3.7V.
Dependents: MAX31725_High_Temperature_Accurate_IC
max31725.h
- Committer:
- phonemacro
- Date:
- 2019-04-09
- Revision:
- 20:c9805b01e814
- Child:
- 22:692515ac2bb7
File content as of revision 20:c9805b01e814:
/******************************************************************************* * Copyright (C) 2019 Maxim Integrated Products, Inc., All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name of Maxim Integrated * Products, Inc. shall not be used except as stated in the Maxim Integrated * Products, Inc. Branding Policy. * * The mere transfer of this software does not imply any licenses * of trade secrets, proprietary technology, copyrights, patents, * trademarks, maskwork rights, or any other form of intellectual * property whatsoever. Maxim Integrated Products, Inc. retains all * ownership rights. ******************************************************************************* * @file MAX31725.h ******************************************************************************* */ #ifndef MAX31725_H #define MAX31725_H #include "mbed.h" #define MAX31725_NO_ERROR 0 #define MAX31725_ERROR -1 #define MAX31725_REG_TEMPERATURE 0X00 #define MAX31725_REG_CONFIGURATION 0X01 #define MAX31725_REG_THYST_LOW_TRIP 0X02 #define MAX31725_REG_TOS_HIGH_TRIP 0X03 #define MAX31725_REG_MAX 0X03 #define WAIT_MARGIN (0.0000) #define MAX31725_WAIT_CONV_TIME (.050+WAIT_MARGIN) #define MAX31725_CFG_CONTINUOUS (0X00 << 0) #define MAX31725_CFG_SHUTDOWN (0X01 << 0) #define MAX31725_CFG_COMPARATOR_MODE (0X00 << 1) #define MAX31725_CFG_INTERRUPT_MODE (0X01 << 1) #define MAX31725_CFG_OS_POLARITY_ACT_LOW (0x00 << 2) #define MAX31725_CFG_OS_POLARITY_ACT_HIGH (0x01 << 2) #define MAX31725_CFG_FAULT_FILTER_1 (0x00 << 3) #define MAX31725_CFG_FAULT_FILTER_2 (0x01 << 3) #define MAX31725_CFG_FAULT_FILTER_4 (0x02 << 3) #define MAX31725_CFG_FAULT_FILTER_6 (0x03 << 3) #define MAX31725_CFG_NORMAL_FORMAT (0x00 << 5) #define MAX31725_CFG_EXTENDED_FORMAT (0x01 << 5) /* add 64°C to temperature */ #define MAX31725_EXTENDED_FORMAT_OFFSET (64.0f) #define MAX31725_CFG_TIMEOUT_ENABLE (0X00 << 6) #define MAX31725_CFG_TIMEOUT_DISABLE (0X01 << 6) #define MAX31725_CFG_ONE_SHOT_START (0X01 << 7) #define MAX31725_I2C_SLAVE_ADR_R0 (0x90 >> 1) // code uses the 7 bit address #define MAX31725_I2C_SLAVE_ADR_R1 (0x92 >> 1) #define MAX31725_I2C_SLAVE_ADR_R2 (0x94 >> 1) #define MAX31725_I2C_SLAVE_ADR_R3 (0x96 >> 1) #define MAX31725_I2C_SLAVE_ADR_R4 (0x98 >> 1) #define MAX31725_I2C_SLAVE_ADR_R5 (0x9A >> 1) #define MAX31725_I2C_SLAVE_ADR_R6 (0x9C >> 1) #define MAX31725_I2C_SLAVE_ADR_R7 (0x9E >> 1) #define MAX31725_CF_LSB (0.00390625F) /** @union max31725_raw_data * @brief union data structure for byte word manipulations */ union max31725_raw_data { struct { uint8_t lsb; uint8_t msb; }; struct { uint16_t magnitude_bits:15; uint16_t sign_bit:1; }; uint16_t uwrd; int16_t swrd; }; #endif/* MAX31875_H */