C code and C++ library, driver software for the low-power small WLP package MAX31875 temperature sensor. Code supports one-shot, shut-down/standby, hysteresis, alarm limits.
Dependents: MAX31875_Temperature_Sensor_Small_WLP Click-Sensor-MAX31875 NuMaker-mbed-Sensor-MAX31875
max31875.h
- Committer:
- phonemacro
- Date:
- 2019-02-13
- Revision:
- 6:61f3693edd6c
- Parent:
- 4:a27a0ee318bd
File content as of revision 6:61f3693edd6c:
/******************************************************************************* * 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 MAX31875.h ******************************************************************************* */ #ifndef MAX31875_H #define MAX31875_H #include "mbed.h" #define MAX31875_NO_ERROR 0 #define MAX31875_ERROR -1 #define MAX31875_REG_TEMPERATURE 0X00 #define MAX31875_REG_CONFIGURATION 0X01 #define MAX31875_REG_THYST_LOW_TRIP 0X02 #define MAX31875_REG_TOS_HIGH_TRIP 0X03 #define MAX31875_REG_MAX 0X03 #define MAX31875_CFG_ONE_SHOT_START (1) /* Start one-shot measurement */ #define MAX31875_CFG_CONV_RATE_0_25 (0x00 << 1) /* 0.25 conversions/sec */ #define MAX31875_CFG_CONV_RATE_1 (0x01 << 1) /* 1.0 conversions/sec */ #define MAX31875_CFG_CONV_RATE_4 (0x02 << 1) /* 4.0 conversions/sec */ #define MAX31875_CFG_CONV_RATE_8 (0x03 << 1) /* 8.0 conversions/sec */ #define MAX31875_WAIT_CONV_RATE_0_25 (4.002) #define MAX31875_WAIT_CONV_RATE_1 (1.0) #define MAX31875_WAIT_CONV_RATE_4 (0.25) #define MAX31875_WAIT_CONV_RATE_8 (0.125) #define MAX31875_CFG_RESOLUTION_9BIT (0x00 << 5) #define MAX31875_CFG_RESOLUTION_10BIT (0x01 << 5) #define MAX31875_CFG_RESOLUTION_11BIT (0x02 << 5) #define MAX31875_CFG_RESOLUTION_12BIT (0x03 << 5) #define MAX31875_CFG_NORMAL_FORMAT (0X00 << 7) #define MAX31875_CFG_EXTENDED_FORMAT (0X01 << 7) #define MAX31875_CFG_CONTINUOUS (0X00 << 8) #define MAX31875_CFG_SHUTDOWN (0X01 << 8) #define MAX31875_CFG_COMPARATOR_MODE (0X00 << 9) #define MAX31875_CFG_INTERRUPT_MODE (0X01 << 9) #define MAX31875_CFG_FAULT_FILTER_1 (0x00 << 11) #define MAX31875_CFG_FAULT_FILTER_2 (0x01 << 11) #define MAX31875_CFG_FAULT_FILTER_4 (0x02 << 11) #define MAX31875_CFG_FAULT_FILTER_6 (0x03 << 11) #define MAX31875_CFG_OVER_TEMP_MASK (0x80) #define MAX31875_I2C_SLAVE_ADR_R0 (0x90 >> 1) // code uses the 7 bit address #define MAX31875_I2C_SLAVE_ADR_R1 (0x92 >> 1) #define MAX31875_I2C_SLAVE_ADR_R2 (0x94 >> 1) #define MAX31875_I2C_SLAVE_ADR_R3 (0x96 >> 1) #define MAX31875_I2C_SLAVE_ADR_R4 (0x98 >> 1) #define MAX31875_I2C_SLAVE_ADR_R5 (0x9A >> 1) #define MAX31875_I2C_SLAVE_ADR_R6 (0x9C >> 1) #define MAX31875_I2C_SLAVE_ADR_R7 (0x9E >> 1) #define MAX31875_CF_NORMAL_FORMAT (0.00390625F) #define MAX31875_CF_EXTENDED_FORMAT (0.0078125F) /** @union max31875_raw_data * @brief union data structure for byte word manipulations */ union max31875_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; }; #define MAX31875_U16_MAX ((uint16_t)~0U) #define MAX31875_S16_MAX ((int16_t)(MAX31875_U16_MAX>>1)) #define MAX31875_S16_MIN ((int16_t)(-MAX31875_S16_MAX - 1)) #endif/* MAX31875_H */