132 lines
3.1 KiB
C
132 lines
3.1 KiB
C
/*
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* Copyright (c) 2015, Copyright Markus Hidell, Robert Olsson
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* All rights reserved.
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*
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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
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* are met:
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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* 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 INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*
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* Authors : Markus Hidell, Robert Olsson {mahidell, roolss} @kth.se
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* Created : 2015-10-27
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* Updated : $Date: 2010/01/14 20:23:02 $
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* $Revision: 1.2 $
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*/
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#include "contiki.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <i2c.h>
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#include <avr/pgmspace.h>
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#include <avr/sleep.h>
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#include <avr/wdt.h>
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#include <avr/boot.h>
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#include <avr/eeprom.h>
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#include "dev/watchdog.h"
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#include "lib/list.h"
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#include "lib/memb.h"
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#include "co2_sa_kxx-sensor.h"
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static int
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status(int type)
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{
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return 0;
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}
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static int
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configure(int type, int c)
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{
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return 0;
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}
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static int
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value(int var)
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{
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int val, status;
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uint8_t buf[2], csum;
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int16_t res;
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(void) status;
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(void) csum;
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res = 0;
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i2c_start_wait(I2C_CO2SA_ADDR | I2C_WRITE);
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if(res) {
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goto err;
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}
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i2c_write(0x22);
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i2c_write(0x00);
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if(var == CO2_SA_KXX_CO2) {
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i2c_write(0x08);
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i2c_write(0x2A);
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}
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if(var == CO2_SA_KXX_TEMP) {
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i2c_write(0x12);
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i2c_write(0x34);
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}
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if(var == CO2_SA_KXX_RH) {
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i2c_write(0x14);
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i2c_write(0x36);
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}
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i2c_stop();
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if(res) {
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goto err;
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}
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clock_delay_msec(20);
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res = 0;
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i2c_start(I2C_CO2SA_ADDR | I2C_READ);
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if(res) {
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goto err;
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}
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status = i2c_readAck();
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if(status & 0x01 == 0)
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goto err;
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buf[0] = i2c_readAck();
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buf[1] = i2c_readAck();
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csum = i2c_readNak();
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i2c_stop();
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val = ((int16_t)(buf[0] << 8)) | buf[1];
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return val;
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err:
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i2c_stop();
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return 0;
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}
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SENSORS_SENSOR(co2_sa_kxx_sensor, "CO2", value, configure, status);
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