moved macros to implementation file, end-of-line normalization, code style
This commit is contained in:
Niclas Finne
parent
013571ed3f
commit
987b57b015
2 changed files with 384 additions and 385 deletions
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@ -1,320 +1,330 @@
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/* 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
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of the copyright holders nor the names of
|
||||
contributors may be used to endorse or promote products derived
|
||||
from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
||||
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
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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#include "dev/sht15.h"
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/***********************************************************************************
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* @fn halMcuWaitUs
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*
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* @brief Busy wait function. Waits the specified number of microseconds. Use
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* assumptions about number of clock cycles needed for the various
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* instructions. The duration of one cycle depends on MCLK. In this HAL
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* , it is set to 8 MHz, thus 8 cycles per usec.
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*
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* NB! This function is highly dependent on architecture and compiler!
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*
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* @param uint16 usec - number of microseconds delay
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*
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* @return none
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*/
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/* #pragma optimize=none */
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void halMcuWaitUs(uint16_t usec) // 5 cycles for calling
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{
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// The least we can wait is 3 usec:
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// ~1 usec for call, 1 for first compare and 1 for return
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while(usec > 3) // 2 cycles for compare
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{ // 2 cycles for jump
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nop(); // 1 cycles for nop
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nop(); // 1 cycles for nop
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nop(); // 1 cycles for nop
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nop(); // 1 cycles for nop
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nop(); // 1 cycles for nop
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nop(); // 1 cycles for nop
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nop(); // 1 cycles for nop
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nop(); // 1 cycles for nop
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usec -= 2; // 1 cycles for optimized decrement
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}
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} // 4 cycles for returning
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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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/***********************************************************************************
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* @fn sht15_send_start
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*
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* @brief This function perform the start sequence asked by SHT15 and SHT75
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*
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*
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*
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* @param none
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*
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* @return none
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*/
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void sht15_send_start()
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{
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// Sequence is to set data line to 1 then clock line to 1
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// then set data line to 0, clock line to 0
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// then set clock line to 1 and data line to 1
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// ___________ ________
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// data line : _____/ \___________/
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// ___________ ____________
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// clock line : _________/ \___/
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DATA_OUT();
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DATA_SET();
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SCK_SET();
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DATA_CLR();
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SCK_CLR();
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SCK_SET();
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DATA_SET();
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SCK_CLR();
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}
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/***********************************************************************************
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* @fn sht15_read16()
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*
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* @brief
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*
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*
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*
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* @param none
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*
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* @return uint16_t
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*/
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uint16_t sht15_read16()
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{
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uint16_t i;
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DATA_IN();
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SCK_CLR();
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uint16_t val = 0;
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for(i = 0; i < 18; i++)
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{
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if((i != 8) && (i != 17))
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{
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SCK_SET();
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if(DATA_VAL())
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val |= 1;
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val <<= 1;
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SCK_CLR();
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}
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else if(i == 8) // Wait for first ACK from SHT15
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{
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DATA_OUT();
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DATA_CLR();
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SCK_SET();
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SCK_CLR();
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DATA_IN();
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}
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else if(i == 17) // Wait for second ACK from SHT15
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{
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DATA_OUT();
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DATA_SET();
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SCK_SET();
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SCK_CLR();
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}
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}
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return val;
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}
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/***********************************************************************************
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* @fn sht15_write8
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*
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* @brief
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*
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*
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*
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* @param uint8 val
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*
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* @return none
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*/
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void sht15_write8(uint8_t val)
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{
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uint16_t i;
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DATA_OUT();
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for(i = 0; i < 8; i++)
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{
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halMcuWaitUs(4);
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SCK_CLR();
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if(val & 0x80)
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{
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DATA_SET();
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}
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else
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{
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DATA_CLR();
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}
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val <<= 1;
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SCK_SET();
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}
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DATA_IN();
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SCK_CLR();
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while(DATA_VAL());
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SCK_SET();
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SCK_CLR();
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}
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/***********************************************************************************
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* @fn sht15_wait_measure
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*
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* @brief
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*
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*
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*
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* @param none
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*
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* @return none
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*/
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void sht15_wait_measure()
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{
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while(DATA_VAL());
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}
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/***********************************************************************************
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* @fn sht15_init
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*
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* @brief
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*
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*
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*
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* @param none
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*
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* @return none
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*/
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void sht15_init()
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{
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// DATA and SCK lines are I/O
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P3SEL &= ~BIT7;
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P5SEL &= ~BIT4;
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// Set SCK and DATA as output
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DATA_OUT();
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SCK_OUT();
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DATA_SET();
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SCK_SET();
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}
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/***********************************************************************************
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* @fn sht15_measure_temp
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*
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* @brief
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*
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*
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*
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* @param none
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*
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* @return none
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*/
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void sht15_measure_temp()
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{
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sht15_send_start();
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sht15_write8(3);
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}
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/***********************************************************************************
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* @fn sht15_measure_hum
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*
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* @brief
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*
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*
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*
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* @param none
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*
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* @return none
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*/
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void sht15_measure_hum()
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{
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sht15_send_start();
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sht15_write8(5);
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}
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/***********************************************************************************
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* @fn sht15_read_status
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*
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* @brief
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*
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*
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*
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* @param none
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*
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* @return none
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*/
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void sht15_read_status()
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{
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sht15_send_start();
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sht15_write8(7);
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}
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/***********************************************************************************
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* @fn sht15_write_status
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*
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* @brief
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*
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*
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*
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* @param none
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*
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* @return none
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*/
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void sht15_write_status()
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{
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sht15_send_start();
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sht15_write8(6);
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}
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/***********************************************************************************
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* @fn sht15_soft_reset
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*
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* @brief
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*
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*
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*
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* @param none
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*
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* @return none
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*/
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void sht15_soft_reset()
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{
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sht15_send_start();
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sht15_write8(30);
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}
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/* 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:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of the copyright holders nor the names of
|
||||
contributors may be used to endorse or promote products derived
|
||||
from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
||||
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
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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#include "dev/sht15.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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* @fn halMcuWaitUs
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*
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* @brief Busy wait function. Waits the specified number of microseconds. Use
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* assumptions about number of clock cycles needed for the various
|
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* instructions. The duration of one cycle depends on MCLK. In this HAL
|
||||
* , it is set to 8 MHz, thus 8 cycles per usec.
|
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*
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* NB! This function is highly dependent on architecture and compiler!
|
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*
|
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* @param uint16 usec - number of microseconds delay
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*
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* @return none
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*/
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/* #pragma optimize=none */
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void
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halMcuWaitUs(uint16_t usec) /* 5 cycles for calling */
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{
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/* The least we can wait is 3 usec: */
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/* ~1 usec for call, 1 for first compare and 1 for return */
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while(usec > 3) /* 2 cycles for compare */
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{ /* 2 cycles for jump */
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nop(); /* 1 cycles for nop */
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nop(); /* 1 cycles for nop */
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nop(); /* 1 cycles for nop */
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nop(); /* 1 cycles for nop */
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nop(); /* 1 cycles for nop */
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nop(); /* 1 cycles for nop */
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nop(); /* 1 cycles for nop */
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nop(); /* 1 cycles for nop */
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usec -= 2; /* 1 cycles for optimized decrement */
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}
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} /* 4 cycles for returning */
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/**
|
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SHT15/75 Driver
|
||||
|
||||
!!! be advise that the SHT15 and SHT75 are not i2C compliant sensors
|
||||
they are just designed to not disturb i2C devices on a 2 wire bus
|
||||
this driver allow to drive the sensor with GPIO and delay
|
||||
*/
|
||||
|
||||
/***********************************************************************************
|
||||
* @fn sht15_send_start
|
||||
*
|
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* @brief This function perform the start sequence asked by SHT15 and SHT75
|
||||
*
|
||||
*
|
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*
|
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* @param none
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||||
*
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* @return none
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*/
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void
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sht15_send_start(void)
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{
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/* Sequence is to set data line to 1 then clock line to 1
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then set data line to 0, clock line to 0
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then set clock line to 1 and data line to 1
|
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___________ ________
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data line : _____/ \___________/
|
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___________ ____________
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clock line : _________/ \___/
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||||
*/
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DATA_OUT();
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DATA_SET();
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SCK_SET();
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DATA_CLR();
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SCK_CLR();
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SCK_SET();
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DATA_SET();
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SCK_CLR();
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}
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/***********************************************************************************
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* @fn sht15_read16()
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*
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* @brief
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*
|
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*
|
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*
|
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* @param none
|
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*
|
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* @return uint16_t
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*/
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uint16_t
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sht15_read16(void)
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{
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uint16_t i;
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DATA_IN();
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SCK_CLR();
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uint16_t val = 0;
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for(i = 0; i < 18; i++) {
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if((i != 8) && (i != 17)) {
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SCK_SET();
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if(DATA_VAL()) {
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val |= 1;
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}
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val <<= 1;
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SCK_CLR();
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} else if(i == 8) { /* Wait for first ACK from SHT15 */
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DATA_OUT();
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DATA_CLR();
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SCK_SET();
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SCK_CLR();
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DATA_IN();
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} else if(i == 17) { /* Wait for second ACK from SHT15 */
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DATA_OUT();
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|
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DATA_SET();
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|
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SCK_SET();
|
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SCK_CLR();
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}
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}
|
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return val;
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||||
}
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/***********************************************************************************
|
||||
* @fn sht15_write8
|
||||
*
|
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* @brief
|
||||
*
|
||||
*
|
||||
*
|
||||
* @param uint8 val
|
||||
*
|
||||
* @return none
|
||||
*/
|
||||
void
|
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sht15_write8(uint8_t val)
|
||||
{
|
||||
uint16_t i;
|
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|
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DATA_OUT();
|
||||
|
||||
for(i = 0; i < 8; i++) {
|
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halMcuWaitUs(4);
|
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SCK_CLR();
|
||||
|
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if(val & 0x80) {
|
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DATA_SET();
|
||||
} else {
|
||||
DATA_CLR();
|
||||
}
|
||||
val <<= 1;
|
||||
|
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SCK_SET();
|
||||
}
|
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|
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DATA_IN();
|
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|
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SCK_CLR();
|
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|
||||
while(DATA_VAL());
|
||||
|
||||
SCK_SET();
|
||||
SCK_CLR();
|
||||
}
|
||||
/***********************************************************************************
|
||||
* @fn sht15_wait_measure
|
||||
*
|
||||
* @brief
|
||||
*
|
||||
*
|
||||
*
|
||||
* @param none
|
||||
*
|
||||
* @return none
|
||||
*/
|
||||
void
|
||||
sht15_wait_measure(void)
|
||||
{
|
||||
while(DATA_VAL());
|
||||
}
|
||||
/***********************************************************************************
|
||||
* @fn sht15_init
|
||||
*
|
||||
* @brief
|
||||
*
|
||||
*
|
||||
*
|
||||
* @param none
|
||||
*
|
||||
* @return none
|
||||
*/
|
||||
void
|
||||
sht15_init(void)
|
||||
{
|
||||
/* DATA and SCK lines are I/O */
|
||||
P3SEL &= ~BIT7;
|
||||
P5SEL &= ~BIT4;
|
||||
/* Set SCK and DATA as output */
|
||||
DATA_OUT();
|
||||
SCK_OUT();
|
||||
DATA_SET();
|
||||
SCK_SET();
|
||||
}
|
||||
/***********************************************************************************
|
||||
* @fn sht15_measure_temp
|
||||
*
|
||||
* @brief
|
||||
*
|
||||
*
|
||||
*
|
||||
* @param none
|
||||
*
|
||||
* @return none
|
||||
*/
|
||||
void
|
||||
sht15_measure_temp(void)
|
||||
{
|
||||
sht15_send_start();
|
||||
sht15_write8(3);
|
||||
}
|
||||
/***********************************************************************************
|
||||
* @fn sht15_measure_hum
|
||||
*
|
||||
* @brief
|
||||
*
|
||||
*
|
||||
*
|
||||
* @param none
|
||||
*
|
||||
* @return none
|
||||
*/
|
||||
void sht15_measure_hum()
|
||||
{
|
||||
sht15_send_start();
|
||||
sht15_write8(5);
|
||||
}
|
||||
/***********************************************************************************
|
||||
* @fn sht15_read_status
|
||||
*
|
||||
* @brief
|
||||
*
|
||||
*
|
||||
*
|
||||
* @param none
|
||||
*
|
||||
* @return none
|
||||
*/
|
||||
void
|
||||
sht15_read_status()
|
||||
{
|
||||
sht15_send_start();
|
||||
sht15_write8(7);
|
||||
}
|
||||
/***********************************************************************************
|
||||
* @fn sht15_write_status
|
||||
*
|
||||
* @brief
|
||||
*
|
||||
*
|
||||
*
|
||||
* @param none
|
||||
*
|
||||
* @return none
|
||||
*/
|
||||
void
|
||||
sht15_write_status(void)
|
||||
{
|
||||
sht15_send_start();
|
||||
sht15_write8(6);
|
||||
}
|
||||
/***********************************************************************************
|
||||
* @fn sht15_soft_reset
|
||||
*
|
||||
* @brief
|
||||
*
|
||||
*
|
||||
*
|
||||
* @param none
|
||||
*
|
||||
* @return none
|
||||
*/
|
||||
void
|
||||
sht15_soft_reset(void)
|
||||
{
|
||||
sht15_send_start();
|
||||
sht15_write8(30);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,65 +1,54 @@
|
|||
/* Copyright (c) 2009 ARAGO SYSTEMS
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of the copyright holders nor the names of
|
||||
contributors may be used to endorse or promote products derived
|
||||
from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
||||
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
/*
|
||||
$Id: v 0.1 2011/02/15 tchapelle Exp $
|
||||
*/
|
||||
|
||||
|
||||
/**
|
||||
SHT15/75 Driver
|
||||
|
||||
!!! be advise that the SHT15 and SHT75 are not i2C compliant sensors
|
||||
they are just designed to not disturb i2C devices on a 2 wire bus
|
||||
this driver allow to drive the sensor with GPIO and delay
|
||||
*/
|
||||
#include "contiki.h"
|
||||
|
||||
#define DATA_OUT() P3DIR |= BIT7
|
||||
#define DATA_IN() P3DIR &= ~BIT7
|
||||
#define DATA_SET() P3OUT |= BIT7; halMcuWaitUs(10)
|
||||
#define DATA_CLR() P3OUT &= ~BIT7; halMcuWaitUs(10)
|
||||
#define DATA_VAL() (P3IN & BIT7)
|
||||
|
||||
#define SCK_OUT() P5DIR |= BIT4
|
||||
#define SCK_SET() P5OUT |= BIT4; halMcuWaitUs(10)
|
||||
#define SCK_CLR() P5OUT &= ~BIT4; halMcuWaitUs(10)
|
||||
|
||||
|
||||
/***********************************************************************************
|
||||
* SHT15 functions
|
||||
*/
|
||||
void sht15_init();
|
||||
void sht15_measure_temp();
|
||||
void sht15_measure_hum();
|
||||
void sht15_wait_measure();
|
||||
void sht15_read_status();
|
||||
void sht15_write_status();
|
||||
void sht15_soft_reset();
|
||||
uint16_t sht15_read16();
|
||||
void sht15_write8(uint8_t val);
|
||||
/* Copyright (c) 2009 ARAGO SYSTEMS
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of the copyright holders nor the names of
|
||||
contributors may be used to endorse or promote products derived
|
||||
from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
||||
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
/*
|
||||
$Id: v 0.1 2011/02/15 tchapelle Exp $
|
||||
*/
|
||||
|
||||
|
||||
/**
|
||||
SHT15/75 Driver
|
||||
|
||||
!!! be advise that the SHT15 and SHT75 are not i2C compliant sensors
|
||||
they are just designed to not disturb i2C devices on a 2 wire bus
|
||||
this driver allow to drive the sensor with GPIO and delay
|
||||
*/
|
||||
#include "contiki.h"
|
||||
|
||||
/***********************************************************************************
|
||||
* SHT15 functions
|
||||
*/
|
||||
void sht15_init();
|
||||
void sht15_measure_temp();
|
||||
void sht15_measure_hum();
|
||||
void sht15_wait_measure();
|
||||
void sht15_read_status();
|
||||
void sht15_write_status();
|
||||
void sht15_soft_reset();
|
||||
uint16_t sht15_read16();
|
||||
void sht15_write8(uint8_t val);
|
||||
|
|
|
|||
Loading…
Reference in a new issue