66 lines
2.5 KiB
C
66 lines
2.5 KiB
C
/* Copyright (c) 2009 ARAGO SYSTEMS
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* Neither the name of the copyright holders nor the names of
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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$Id: v 0.1 2011/02/15 tchapelle Exp $
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*/
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/**
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SHT15/75 Driver
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!!! be advise that the SHT15 and SHT75 are not i2C compliant sensors
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they are just designed to not disturb i2C devices on a 2 wire bus
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this driver allow to drive the sensor with GPIO and delay
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*/
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#include "contiki.h"
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#define DATA_OUT() P3DIR |= BIT7
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#define DATA_IN() P3DIR &= ~BIT7
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#define DATA_SET() P3OUT |= BIT7; halMcuWaitUs(10)
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#define DATA_CLR() P3OUT &= ~BIT7; halMcuWaitUs(10)
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#define DATA_VAL() (P3IN & BIT7)
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#define SCK_OUT() P5DIR |= BIT4
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#define SCK_SET() P5OUT |= BIT4; halMcuWaitUs(10)
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#define SCK_CLR() P5OUT &= ~BIT4; halMcuWaitUs(10)
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/***********************************************************************************
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* SHT15 functions
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*/
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void sht15_init();
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void sht15_measure_temp();
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void sht15_measure_hum();
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void sht15_wait_measure();
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void sht15_read_status();
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void sht15_write_status();
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void sht15_soft_reset();
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uint16_t sht15_read16();
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void sht15_write8(uint8_t val);
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