From 4085ae3ddfbbf10c8ccbd3dccd43452c40a1fe40 Mon Sep 17 00:00:00 2001 From: Yuval Adam Date: Fri, 13 Mar 2015 12:24:52 +0200 Subject: Add bootloader, nfclib and sensorlib --- sensorlib/hw_sht21.h | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 sensorlib/hw_sht21.h (limited to 'sensorlib/hw_sht21.h') diff --git a/sensorlib/hw_sht21.h b/sensorlib/hw_sht21.h new file mode 100644 index 0000000..550af75 --- /dev/null +++ b/sensorlib/hw_sht21.h @@ -0,0 +1,76 @@ +//***************************************************************************** +// +// hw_sht21.h - Macros used for accessing the Intersil SHT21 humidity sensor +// +// Copyright (c) 2013-2014 Texas Instruments Incorporated. All rights reserved. +// Software License Agreement +// +// Texas Instruments (TI) is supplying this software for use solely and +// exclusively on TI's microcontroller products. The software is owned by +// TI and/or its suppliers, and is protected under applicable copyright +// laws. You may not combine this software with "viral" open-source +// software in order to form a larger program. +// +// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS. +// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT +// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY +// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL +// DAMAGES, FOR ANY REASON WHATSOEVER. +// +// This is part of revision 2.1.0.12573 of the Tiva Firmware Development Package. +// +//***************************************************************************** + +#ifndef __SENSORLIB_HW_SHT21_H__ +#define __SENSORLIB_HW_SHT21_H__ + +//***************************************************************************** +// +// The following are defines for the SHT21 Commands and Registers +// +//***************************************************************************** +#define SHT21_CMD_MEAS_T_HOLD 0xE3 // Measure temperatue with I2C bus + // hold +#define SHT21_CMD_MEAS_RH_HOLD 0xE5 // Measure humidity with I2C bus + // hold +#define SHT21_CMD_WRITE_CONFIG 0xE6 // Write the user config register +#define SHT21_CMD_READ_CONFIG 0xE7 // Read the user config register +#define SHT21_CMD_MEAS_T 0xF3 // Measure temperature polled +#define SHT21_CMD_MEAS_RH 0xF5 // Measure humidity polled +#define SHT21_CMD_SOFT_RESET 0xFE // Perform a device reset + +//***************************************************************************** +// +// The following are defines for the bit fields in the SHT21_CONFIG register. +// +//***************************************************************************** +#define SHT21_CONFIG_RES_M 0x81 // Resolution config for + // temperature and humidity +#define SHT21_CONFIG_RES_12 0x00 // RH 12 bit, T 14 bit +#define SHT21_CONFIG_RES_8 0x01 // RH 8 bit, T 12 bit +#define SHT21_CONFIG_RES_10 0x80 // RH 10 bit, T 13 bit +#define SHT21_CONFIG_RES_11 0x81 // RH 11 bit, T 11 bit +#define SHT21_CONFIG_BATT_M 0x40 // Battery status indicator +#define SHT21_CONFIG_BATT_GOOD 0x00 +#define SHT21_CONFIG_BATT_LOW 0x40 +#define SHT21_CONFIG_HEATER_M 0x04 // On chip heater for test and + // diagnostics +#define SHT21_CONFIG_HEATER_DISABLE \ + 0x00 // Heater off +#define SHT21_CONFIG_HEATER_ENABLE \ + 0x04 // Heater on +#define SHT21_CONFIG_OTP_RELOAD_M \ + 0x02 // OTP reload control; soft reset + // is preferred +#define SHT21_CONFIG_OTP_RELOAD_ENABLE \ + 0x00 // OTP reload enabled +#define SHT21_CONFIG_OTP_RELOAD_DISABLE \ + 0x02 // OTP reload disabled +#define SHT21_CONFIG_BATT_S 6 +#define SHT21_CONFIG_HEATER_S 2 +#define SHT21_CONFIG_OTP_RELOAD_S \ + 1 +#define SHT21_CONFIG_RES_S 0 + +#endif // __SENSORLIB_HW_SHT21_H__ -- cgit v1.3.1