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Added SHT25 sensor

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This commit is contained in:
Antonio Lignan 2015-03-10 13:09:31 +01:00
parent 2734c97234
commit 1af29a5beb
5 changed files with 269 additions and 2 deletions
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3
examples/z1/Makefile
View file

@ -5,7 +5,8 @@ endif
# Enable to pull-in Z1SP specific test/source files
ZOLERTIA_Z1SP=0
CONTIKI_PROJECT = test-phidgets blink test-adxl345 test-tmp102 test-light-ziglet test-battery test-sht11 test-relay-phidget test-tlc59116
CONTIKI_PROJECT = test-phidgets blink test-adxl345 test-tmp102 test-light-ziglet
CONTIKI_PROJECT += test-battery test-relay-phidget test-tlc59116 test-sht25
CONTIKI_SOURCEFILES += sht11.c
APPS=serial-shell

63
examples/z1/test-sht25.c Normal file
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@ -0,0 +1,63 @@
/*
* Copyright (c) 2015, Zolertia <http://www.zolertia.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \file
* A quick program for testing the SHT25 temperature and humidity sensor
* \author
* Antonio Lignan <alinan@zolertia.com>
*/
#include <stdio.h>
#include "contiki.h"
#include "dev/sht25.h"
PROCESS(test_sht25_process, "SHT25 test");
AUTOSTART_PROCESSES(&test_sht25_process);
static struct etimer et;
PROCESS_THREAD(test_sht25_process, ev, data)
{
int16_t temperature, humidity;
PROCESS_BEGIN();
SENSORS_ACTIVATE(sht25);
while(1) {
etimer_set(&et, CLOCK_SECOND);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
temperature = sht25.value(SHT25_VAL_TEMP);
printf("Temperature %d.%d ºC\n", temperature / 100, temperature % 100);
humidity = sht25.value(SHT25_VAL_HUM);
printf("Humidity %d.%d %RH\n", humidity / 100, humidity % 100);
}
PROCESS_END();
}

2
platform/z1/Makefile.common
View file

@ -19,7 +19,7 @@ ARCH=msp430.c leds.c watchdog.c xmem.c \
slip.c slip_uart0.c \
z1-phidgets.c sht11.c sht11-sensor.c light-sensor.c \
battery-sensor.c sky-sensors.c tmp102.c temperature-sensor.c light-ziglet.c \
relay-phidget.c tlc59116.c
relay-phidget.c tlc59116.c sht25.c
CONTIKI_TARGET_DIRS = . dev apps net
ifndef CONTIKI_TARGET_MAIN

134
platform/z1/dev/sht25.c Normal file
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@ -0,0 +1,134 @@
/*
* Copyright (c) 2015, Zolertia <http://www.zolertia.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \file
* SHT25 temperature and humidity sensor driver
* \author
* Antonio Lignan <alinan@zolertia.com>
*/
#include <stdio.h>
#include "contiki.h"
#include "i2cmaster.h"
#include "dev/sht25.h"
#include "lib/sensors.h"
/*---------------------------------------------------------------------------*/
static uint8_t enabled;
/*---------------------------------------------------------------------------*/
static int
configure(int type, int value)
{
if((type != SENSORS_ACTIVE) && (type != SENSORS_ACTIVE)) {
return SHT25_ERROR;
}
if(value) {
i2c_enable();
} else {
i2c_disable();
}
enabled = value;
return 0;
}
/*---------------------------------------------------------------------------*/
static int
status(int type)
{
switch(type) {
case SENSORS_ACTIVE:
case SENSORS_READY:
return enabled;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static uint16_t
sht25_read_reg(uint8_t reg)
{
uint8_t buf[] = { 0x00, 0x00 };
uint16_t retval;
uint8_t rtx = reg;
/* transmit the register to read */
i2c_transmitinit(SHT25_ADDR);
while(i2c_busy());
i2c_transmit_n(1, &rtx);
while(i2c_busy());
/* receive the data */
i2c_receiveinit(SHT25_ADDR);
while(i2c_busy());
i2c_receive_n(2, &buf[0]);
while(i2c_busy());
retval = (uint16_t)(buf[0] << 8 | (buf[1]));
return retval;
}
/*---------------------------------------------------------------------------*/
static int16_t
sht25_convert(uint8_t variable, uint16_t value)
{
int16_t rd;
uint32_t buff;
buff = (uint32_t)value;
if(variable == SHT25_VAL_TEMP) {
buff *= 17572;
buff = buff >> 16;
rd = (int16_t)buff - 4685;
} else {
buff *= 12500;
buff = buff >> 16;
rd = (int16_t)buff - 600;
rd = (rd > 10000) ? 10000 : rd;
}
return rd;
}
/*---------------------------------------------------------------------------*/
static int16_t
sht25_read(uint8_t variable)
{
int16_t rd;
uint16_t raw;
if((variable != SHT25_VAL_TEMP) && (variable != SHT25_VAL_HUM)) {
return SHT25_ERROR;
}
raw = sht25_read_reg(variable);
rd = sht25_convert(variable, raw);
return rd;
}
/*---------------------------------------------------------------------------*/
static int16_t
value(uint8_t type)
{
return sht25_read(type);
}
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(sht25, "SHT25", value, configure, status);
/*---------------------------------------------------------------------------*/

69
platform/z1/dev/sht25.h Normal file
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@ -0,0 +1,69 @@
/*
* Copyright (c) 2015, Zolertia <http://www.zolertia.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \file
* SHT25 temperature and humidity sensor driver
* \author
* Antonio Lignan <alinan@zolertia.com>
*/
#include "lib/sensors.h"
#ifndef SHT25_H_
#define SHT25_H_
/* -------------------------------------------------------------------------- */
#define SHT25_ADDR 0x40
#define SHT25_TEMP_HOLD 0xE3
#define SHT25_HUM_HOLD 0xE5
#define SHT25_TEMP_NO_HOLD 0xF3
#define SHT25_HUM_NO_HOLD 0xF5
#define SHT2X_UREG_WRITE 0xE6
#define SHT2X_UREG_READ 0xE7
#define SHT2X_SOFT_RESET 0XFE
#define SHT2X_NULL 0x00
/* -------------------------------------------------------------------------- */
#define SHT2X_RES_14T_12RH 0x00
#define SHT2X_RES_12T_08RH 0x01
#define SHT2X_RES_13T_10RH 0x80
#define SHT2X_RES_11T_11RH 0x81
#define SHT2X_HEATER_ON 0x04
#define SHT2X_HEATER_OFF 0x00
#define SHT2X_OTP_RELOAD_EN 0x00
#define SHT2X_OTP_RELOAD_DIS 0x02
/* -------------------------------------------------------------------------- */
#define SHT25_VAL_TEMP SHT25_TEMP_HOLD
#define SHT25_VAL_HUM SHT25_HUM_HOLD
#define SHT25_ERROR -1
/* -------------------------------------------------------------------------- */
extern const struct sensors_sensor sht25;
/* -------------------------------------------------------------------------- */
#endif /* ifndef SHT25_H_ */