Merge pull request #986 from g-oikonomou/cc26xx-hdc-sensor

Replace STH21 with HDC1000 for the CC2650 SensorTag
This commit is contained in:
Antonio Lignan 2015-05-15 10:12:08 +02:00
commit b50ae639b3
14 changed files with 483 additions and 534 deletions

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@ -143,11 +143,11 @@ AUTOSTART_PROCESSES(&cc26xx_demo_process);
#define SENSOR_READING_PERIOD (CLOCK_SECOND * 20) #define SENSOR_READING_PERIOD (CLOCK_SECOND * 20)
#define SENSOR_READING_RANDOM (CLOCK_SECOND << 4) #define SENSOR_READING_RANDOM (CLOCK_SECOND << 4)
static struct ctimer bmp_timer, opt_timer, sht_timer, tmp_timer, mpu_timer; static struct ctimer bmp_timer, opt_timer, hdc_timer, tmp_timer, mpu_timer;
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static void init_bmp_reading(void *not_used); static void init_bmp_reading(void *not_used);
static void init_opt_reading(void *not_used); static void init_opt_reading(void *not_used);
static void init_sht_reading(void *not_used); static void init_hdc_reading(void *not_used);
static void init_tmp_reading(void *not_used); static void init_tmp_reading(void *not_used);
static void init_mpu_reading(void *not_used); static void init_mpu_reading(void *not_used);
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
@ -214,27 +214,27 @@ get_tmp_reading()
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static void static void
get_sht_reading() get_hdc_reading()
{ {
int value; int value;
clock_time_t next = SENSOR_READING_PERIOD + clock_time_t next = SENSOR_READING_PERIOD +
(random_rand() % SENSOR_READING_RANDOM); (random_rand() % SENSOR_READING_RANDOM);
value = sht_21_sensor.value(SHT_21_SENSOR_TYPE_TEMP); value = hdc_1000_sensor.value(HDC_1000_SENSOR_TYPE_TEMP);
if(value != CC26XX_SENSOR_READING_ERROR) { if(value != CC26XX_SENSOR_READING_ERROR) {
printf("SHT: Temp=%d.%02d C\n", value / 100, value % 100); printf("HDC: Temp=%d.%02d C\n", value / 100, value % 100);
} else { } else {
printf("SHT: Temp Read Error\n"); printf("HDC: Temp Read Error\n");
} }
value = sht_21_sensor.value(SHT_21_SENSOR_TYPE_HUMIDITY); value = hdc_1000_sensor.value(HDC_1000_SENSOR_TYPE_HUMIDITY);
if(value != CC26XX_SENSOR_READING_ERROR) { if(value != CC26XX_SENSOR_READING_ERROR) {
printf("SHT: Humidity=%d.%02d %%RH\n", value / 100, value % 100); printf("HDC: Humidity=%d.%02d %%RH\n", value / 100, value % 100);
} else { } else {
printf("SHT: Humidity Read Error\n"); printf("HDC: Humidity Read Error\n");
} }
ctimer_set(&sht_timer, next, init_sht_reading, NULL); ctimer_set(&hdc_timer, next, init_hdc_reading, NULL);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static void static void
@ -311,9 +311,9 @@ init_opt_reading(void *not_used)
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static void static void
init_sht_reading(void *not_used) init_hdc_reading(void *not_used)
{ {
SENSORS_ACTIVATE(sht_21_sensor); SENSORS_ACTIVATE(hdc_1000_sensor);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static void static void
@ -360,7 +360,7 @@ static void
init_sensor_readings(void) init_sensor_readings(void)
{ {
#if BOARD_SENSORTAG #if BOARD_SENSORTAG
SENSORS_ACTIVATE(sht_21_sensor); SENSORS_ACTIVATE(hdc_1000_sensor);
SENSORS_ACTIVATE(tmp_007_sensor); SENSORS_ACTIVATE(tmp_007_sensor);
SENSORS_ACTIVATE(opt_3001_sensor); SENSORS_ACTIVATE(opt_3001_sensor);
SENSORS_ACTIVATE(bmp_280_sensor); SENSORS_ACTIVATE(bmp_280_sensor);
@ -450,8 +450,8 @@ PROCESS_THREAD(cc26xx_demo_process, ev, data)
get_bmp_reading(); get_bmp_reading();
} else if(ev == sensors_event && data == &opt_3001_sensor) { } else if(ev == sensors_event && data == &opt_3001_sensor) {
get_light_reading(); get_light_reading();
} else if(ev == sensors_event && data == &sht_21_sensor) { } else if(ev == sensors_event && data == &hdc_1000_sensor) {
get_sht_reading(); get_hdc_reading();
} else if(ev == sensors_event && data == &tmp_007_sensor) { } else if(ev == sensors_event && data == &tmp_007_sensor) {
get_tmp_reading(); get_tmp_reading();
} else if(ev == sensors_event && data == &mpu_9250_sensor) { } else if(ev == sensors_event && data == &mpu_9250_sensor) {

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@ -68,7 +68,7 @@ PROCESS(cc26xx_web_demo_process, "CC26XX Web Demo");
struct ctimer batmon_timer; struct ctimer batmon_timer;
#if BOARD_SENSORTAG #if BOARD_SENSORTAG
struct ctimer bmp_timer, sht_timer, tmp_timer, opt_timer, mpu_timer; struct ctimer bmp_timer, hdc_timer, tmp_timer, opt_timer, mpu_timer;
#endif #endif
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/* Provide visible feedback via LEDS while searching for a network */ /* Provide visible feedback via LEDS while searching for a network */
@ -111,11 +111,11 @@ DEMO_SENSOR(bmp_pres, CC26XX_WEB_DEMO_SENSOR_BMP_PRES,
DEMO_SENSOR(bmp_temp, CC26XX_WEB_DEMO_SENSOR_BMP_TEMP, DEMO_SENSOR(bmp_temp, CC26XX_WEB_DEMO_SENSOR_BMP_TEMP,
"Air Temp", "air-temp", "bmp_temp", "Air Temp", "air-temp", "bmp_temp",
CC26XX_WEB_DEMO_UNIT_TEMP); CC26XX_WEB_DEMO_UNIT_TEMP);
DEMO_SENSOR(sht_temp, CC26XX_WEB_DEMO_SENSOR_SHT_TEMP, DEMO_SENSOR(hdc_temp, CC26XX_WEB_DEMO_SENSOR_HDC_TEMP,
"SHT Temp", "sht-temp", "sht_temp", "HDC Temp", "hdc-temp", "hdc_temp",
CC26XX_WEB_DEMO_UNIT_TEMP); CC26XX_WEB_DEMO_UNIT_TEMP);
DEMO_SENSOR(sht_hum, CC26XX_WEB_DEMO_SENSOR_SHT_HUMIDITY, DEMO_SENSOR(hdc_hum, CC26XX_WEB_DEMO_SENSOR_HDC_HUMIDITY,
"SHT Humidity", "sht-humidity", "sht_hum", "HDC Humidity", "hdc-humidity", "hdc_hum",
CC26XX_WEB_DEMO_UNIT_HUMIDITY); CC26XX_WEB_DEMO_UNIT_HUMIDITY);
DEMO_SENSOR(tmp_amb, CC26XX_WEB_DEMO_SENSOR_TMP_AMBIENT, DEMO_SENSOR(tmp_amb, CC26XX_WEB_DEMO_SENSOR_TMP_AMBIENT,
"Ambient Temp", "ambient-temp", "tmp_amb", "Ambient Temp", "ambient-temp", "tmp_amb",
@ -152,7 +152,7 @@ DEMO_SENSOR(mpu_gyro_z, CC26XX_WEB_DEMO_SENSOR_MPU_GYRO_Z,
#if BOARD_SENSORTAG #if BOARD_SENSORTAG
static void init_bmp_reading(void *data); static void init_bmp_reading(void *data);
static void init_light_reading(void *data); static void init_light_reading(void *data);
static void init_sht_reading(void *data); static void init_hdc_reading(void *data);
static void init_tmp_reading(void *data); static void init_tmp_reading(void *data);
static void init_mpu_reading(void *data); static void init_mpu_reading(void *data);
#endif #endif
@ -526,42 +526,42 @@ get_tmp_reading()
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static void static void
get_sht_reading() get_hdc_reading()
{ {
int value; int value;
char *buf; char *buf;
clock_time_t next = SENSOR_READING_PERIOD + clock_time_t next = SENSOR_READING_PERIOD +
(random_rand() % SENSOR_READING_RANDOM); (random_rand() % SENSOR_READING_RANDOM);
if(sht_temp_reading.publish) { if(hdc_temp_reading.publish) {
value = sht_21_sensor.value(SHT_21_SENSOR_TYPE_TEMP); value = hdc_1000_sensor.value(HDC_1000_SENSOR_TYPE_TEMP);
if(value != CC26XX_SENSOR_READING_ERROR) { if(value != CC26XX_SENSOR_READING_ERROR) {
sht_temp_reading.raw = value; hdc_temp_reading.raw = value;
compare_and_update(&sht_temp_reading); compare_and_update(&hdc_temp_reading);
buf = sht_temp_reading.converted; buf = hdc_temp_reading.converted;
memset(buf, 0, CC26XX_WEB_DEMO_CONVERTED_LEN); memset(buf, 0, CC26XX_WEB_DEMO_CONVERTED_LEN);
snprintf(buf, CC26XX_WEB_DEMO_CONVERTED_LEN, "%d.%02d", value / 100, snprintf(buf, CC26XX_WEB_DEMO_CONVERTED_LEN, "%d.%02d", value / 100,
value % 100); value % 100);
} }
} }
if(sht_hum_reading.publish) { if(hdc_hum_reading.publish) {
value = sht_21_sensor.value(SHT_21_SENSOR_TYPE_HUMIDITY); value = hdc_1000_sensor.value(HDC_1000_SENSOR_TYPE_HUMIDITY);
if(value != CC26XX_SENSOR_READING_ERROR) { if(value != CC26XX_SENSOR_READING_ERROR) {
sht_hum_reading.raw = value; hdc_hum_reading.raw = value;
compare_and_update(&sht_hum_reading); compare_and_update(&hdc_hum_reading);
buf = sht_hum_reading.converted; buf = hdc_hum_reading.converted;
memset(buf, 0, CC26XX_WEB_DEMO_CONVERTED_LEN); memset(buf, 0, CC26XX_WEB_DEMO_CONVERTED_LEN);
snprintf(buf, CC26XX_WEB_DEMO_CONVERTED_LEN, "%d.%02d", value / 100, snprintf(buf, CC26XX_WEB_DEMO_CONVERTED_LEN, "%d.%02d", value / 100,
value % 100); value % 100);
} }
} }
ctimer_set(&sht_timer, next, init_sht_reading, NULL); ctimer_set(&hdc_timer, next, init_hdc_reading, NULL);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static void static void
@ -702,12 +702,12 @@ init_bmp_reading(void *data)
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static void static void
init_sht_reading(void *data) init_hdc_reading(void *data)
{ {
if(sht_hum_reading.publish || sht_temp_reading.publish) { if(hdc_hum_reading.publish || hdc_temp_reading.publish) {
SENSORS_ACTIVATE(sht_21_sensor); SENSORS_ACTIVATE(hdc_1000_sensor);
} else { } else {
ctimer_set(&sht_timer, CLOCK_SECOND, init_sht_reading, NULL); ctimer_set(&hdc_timer, CLOCK_SECOND, init_hdc_reading, NULL);
} }
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
@ -756,7 +756,7 @@ init_sensor_readings(void)
#if BOARD_SENSORTAG #if BOARD_SENSORTAG
init_bmp_reading(NULL); init_bmp_reading(NULL);
init_light_reading(NULL); init_light_reading(NULL);
init_sht_reading(NULL); init_hdc_reading(NULL);
init_tmp_reading(NULL); init_tmp_reading(NULL);
init_mpu_reading(NULL); init_mpu_reading(NULL);
#endif /* BOARD_SENSORTAG */ #endif /* BOARD_SENSORTAG */
@ -781,8 +781,8 @@ init_sensors(void)
list_add(sensor_list, &opt_reading); list_add(sensor_list, &opt_reading);
list_add(sensor_list, &sht_hum_reading); list_add(sensor_list, &hdc_hum_reading);
list_add(sensor_list, &sht_temp_reading); list_add(sensor_list, &hdc_temp_reading);
list_add(sensor_list, &mpu_acc_x_reading); list_add(sensor_list, &mpu_acc_x_reading);
list_add(sensor_list, &mpu_acc_y_reading); list_add(sensor_list, &mpu_acc_y_reading);
@ -873,8 +873,8 @@ PROCESS_THREAD(cc26xx_web_demo_process, ev, data)
get_bmp_reading(); get_bmp_reading();
} else if(ev == sensors_event && data == &opt_3001_sensor) { } else if(ev == sensors_event && data == &opt_3001_sensor) {
get_light_reading(); get_light_reading();
} else if(ev == sensors_event && data == &sht_21_sensor) { } else if(ev == sensors_event && data == &hdc_1000_sensor) {
get_sht_reading(); get_hdc_reading();
} else if(ev == sensors_event && data == &tmp_007_sensor) { } else if(ev == sensors_event && data == &tmp_007_sensor) {
get_tmp_reading(); get_tmp_reading();
} else if(ev == sensors_event && data == &mpu_9250_sensor) { } else if(ev == sensors_event && data == &mpu_9250_sensor) {

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@ -121,8 +121,8 @@
#define CC26XX_WEB_DEMO_SENSOR_BMP_TEMP 3 #define CC26XX_WEB_DEMO_SENSOR_BMP_TEMP 3
#define CC26XX_WEB_DEMO_SENSOR_TMP_AMBIENT 4 #define CC26XX_WEB_DEMO_SENSOR_TMP_AMBIENT 4
#define CC26XX_WEB_DEMO_SENSOR_TMP_OBJECT 5 #define CC26XX_WEB_DEMO_SENSOR_TMP_OBJECT 5
#define CC26XX_WEB_DEMO_SENSOR_SHT_TEMP 6 #define CC26XX_WEB_DEMO_SENSOR_HDC_TEMP 6
#define CC26XX_WEB_DEMO_SENSOR_SHT_HUMIDITY 7 #define CC26XX_WEB_DEMO_SENSOR_HDC_HUMIDITY 7
#define CC26XX_WEB_DEMO_SENSOR_OPT_LIGHT 8 #define CC26XX_WEB_DEMO_SENSOR_OPT_LIGHT 8
#define CC26XX_WEB_DEMO_SENSOR_MPU_ACC_X 9 #define CC26XX_WEB_DEMO_SENSOR_MPU_ACC_X 9
#define CC26XX_WEB_DEMO_SENSOR_MPU_ACC_Y 10 #define CC26XX_WEB_DEMO_SENSOR_MPU_ACC_Y 10

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@ -66,8 +66,8 @@ extern resource_t res_bmp280_temp;
extern resource_t res_bmp280_press; extern resource_t res_bmp280_press;
extern resource_t res_tmp007_amb; extern resource_t res_tmp007_amb;
extern resource_t res_tmp007_obj; extern resource_t res_tmp007_obj;
extern resource_t res_sht21_temp; extern resource_t res_hdc1000_temp;
extern resource_t res_sht21_hum; extern resource_t res_hdc1000_hum;
extern resource_t res_opt3001_light; extern resource_t res_opt3001_light;
extern resource_t res_mpu_acc_x; extern resource_t res_mpu_acc_x;
extern resource_t res_mpu_acc_y; extern resource_t res_mpu_acc_y;
@ -98,8 +98,8 @@ start_board_resources(void)
rest_activate_resource(&res_bmp280_press, "sen/bar/pres"); rest_activate_resource(&res_bmp280_press, "sen/bar/pres");
rest_activate_resource(&res_tmp007_amb, "sen/tmp/amb"); rest_activate_resource(&res_tmp007_amb, "sen/tmp/amb");
rest_activate_resource(&res_tmp007_obj, "sen/tmp/obj"); rest_activate_resource(&res_tmp007_obj, "sen/tmp/obj");
rest_activate_resource(&res_sht21_temp, "sen/sht/t"); rest_activate_resource(&res_hdc1000_temp, "sen/hdc/t");
rest_activate_resource(&res_sht21_hum, "sen/sht/h"); rest_activate_resource(&res_hdc1000_hum, "sen/hdc/h");
rest_activate_resource(&res_opt3001_light, "sen/opt/light"); rest_activate_resource(&res_opt3001_light, "sen/opt/light");
rest_activate_resource(&res_mpu_acc_x, "sen/mpu/acc/x"); rest_activate_resource(&res_mpu_acc_x, "sen/mpu/acc/x");
rest_activate_resource(&res_mpu_acc_y, "sen/mpu/acc/y"); rest_activate_resource(&res_mpu_acc_y, "sen/mpu/acc/y");

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@ -229,28 +229,28 @@ RESOURCE(res_bmp280_press,
"title=\"Barometer (Pressure)\";rt=\"hPa (hectopascal / millibar)\"", "title=\"Barometer (Pressure)\";rt=\"hPa (hectopascal / millibar)\"",
res_get_handler_bmp_press, NULL, NULL, NULL); res_get_handler_bmp_press, NULL, NULL, NULL);
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/* SHT21 sensor resources and handler: Temperature, Pressure */ /* HDC1000 sensor resources and handler: Temperature, Pressure */
static void static void
res_get_handler_sht_temp(void *request, void *response, uint8_t *buffer, res_get_handler_hdc_temp(void *request, void *response, uint8_t *buffer,
uint16_t preferred_size, int32_t *offset) uint16_t preferred_size, int32_t *offset)
{ {
res_get_handler_all(CC26XX_WEB_DEMO_SENSOR_SHT_TEMP, request, response, res_get_handler_all(CC26XX_WEB_DEMO_SENSOR_HDC_TEMP, request, response,
buffer, preferred_size, offset); buffer, preferred_size, offset);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static void static void
res_get_handler_sht_humidity(void *request, void *response, uint8_t *buffer, res_get_handler_hdc_humidity(void *request, void *response, uint8_t *buffer,
uint16_t preferred_size, int32_t *offset) uint16_t preferred_size, int32_t *offset)
{ {
res_get_handler_all(CC26XX_WEB_DEMO_SENSOR_SHT_HUMIDITY, request, response, res_get_handler_all(CC26XX_WEB_DEMO_SENSOR_HDC_HUMIDITY, request, response,
buffer, preferred_size, offset); buffer, preferred_size, offset);
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
RESOURCE(res_sht21_temp, "title=\"Temperature\";rt=\"C\"", RESOURCE(res_hdc1000_temp, "title=\"Temperature\";rt=\"C\"",
res_get_handler_sht_temp, NULL, NULL, NULL); res_get_handler_hdc_temp, NULL, NULL, NULL);
RESOURCE(res_sht21_hum, "title=\"Humidity\";rt=\"%RH\"", RESOURCE(res_hdc1000_hum, "title=\"Humidity\";rt=\"%RH\"",
res_get_handler_sht_humidity, NULL, NULL, NULL); res_get_handler_hdc_humidity, NULL, NULL, NULL);
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/* Illuminance resources and handler */ /* Illuminance resources and handler */
static void static void

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@ -39,7 +39,7 @@ In terms of hardware support, the following drivers have been implemented:
* Motion Processing Unit (MPU9250 - Accelerometer, Gyro) * Motion Processing Unit (MPU9250 - Accelerometer, Gyro)
* BMP280 sensor * BMP280 sensor
* TMP007 sensor * TMP007 sensor
* SHT21 sensor * HDC1000 sensor
* OPT3001 sensor * OPT3001 sensor
* Buzzer * Buzzer
* External SPI flash * External SPI flash

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@ -3,6 +3,6 @@ CFLAGS += -DBACKDOOR_IOID=0x00000000
BOARD_SOURCEFILES += leds-arch.c sensortag-sensors.c sensor-common.c BOARD_SOURCEFILES += leds-arch.c sensortag-sensors.c sensor-common.c
BOARD_SOURCEFILES += bmp-280-sensor.c tmp-007-sensor.c opt-3001-sensor.c BOARD_SOURCEFILES += bmp-280-sensor.c tmp-007-sensor.c opt-3001-sensor.c
BOARD_SOURCEFILES += sht-21-sensor.c mpu-9250-sensor.c button-sensor.c BOARD_SOURCEFILES += hdc-1000-sensor.c mpu-9250-sensor.c button-sensor.c
BOARD_SOURCEFILES += reed-relay.c ext-flash.c buzzer.c BOARD_SOURCEFILES += reed-relay.c ext-flash.c buzzer.c
BOARD_SOURCEFILES += board.c board-spi.c board-i2c.c BOARD_SOURCEFILES += board.c board-spi.c board-i2c.c

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@ -43,7 +43,7 @@
#include "bmp-280-sensor.h" #include "bmp-280-sensor.h"
#include "tmp-007-sensor.h" #include "tmp-007-sensor.h"
#include "opt-3001-sensor.h" #include "opt-3001-sensor.h"
#include "sht-21-sensor.h" #include "hdc-1000-sensor.h"
#include "mpu-9250-sensor.h" #include "mpu-9250-sensor.h"
#include "reed-relay.h" #include "reed-relay.h"
#include "buzzer.h" #include "buzzer.h"

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@ -76,7 +76,7 @@ shutdown_handler(uint8_t mode)
SENSORS_DEACTIVATE(bmp_280_sensor); SENSORS_DEACTIVATE(bmp_280_sensor);
SENSORS_DEACTIVATE(opt_3001_sensor); SENSORS_DEACTIVATE(opt_3001_sensor);
SENSORS_DEACTIVATE(tmp_007_sensor); SENSORS_DEACTIVATE(tmp_007_sensor);
SENSORS_DEACTIVATE(sht_21_sensor); SENSORS_DEACTIVATE(hdc_1000_sensor);
mpu_9250_sensor.configure(MPU_9250_SENSOR_SHUTDOWN, 0); mpu_9250_sensor.configure(MPU_9250_SENSOR_SHUTDOWN, 0);
} }
} }

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@ -0,0 +1,304 @@
/*
* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.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 copyright holder 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 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 HOLDER 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.
*/
/*---------------------------------------------------------------------------*/
/**
* \addtogroup sensortag-cc26xx-hdc-sensor
* @{
*
* \file
* Driver for the Sensortag-CC26xx HDC sensor
*/
/*---------------------------------------------------------------------------*/
#include "contiki-conf.h"
#include "sys/ctimer.h"
#include "lib/sensors.h"
#include "hdc-1000-sensor.h"
#include "sensor-common.h"
#include "board-i2c.h"
#include "ti-lib.h"
#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
/*---------------------------------------------------------------------------*/
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
/*---------------------------------------------------------------------------*/
/* Sensor I2C address */
#define SENSOR_I2C_ADDRESS 0x43
/* Registers */
#define HDC1000_REG_TEMP 0x00 /* Temperature */
#define HDC1000_REG_HUM 0x01 /* Humidity */
#define HDC1000_REG_CONFIG 0x02 /* Configuration */
#define HDC1000_REG_SERID_H 0xFB /* Serial ID high */
#define HDC1000_REG_SERID_M 0xFC /* Serial ID middle */
#define HDC1000_REG_SERID_L 0xFD /* Serial ID low */
#define HDC1000_REG_MANF_ID 0xFE /* Manufacturer ID */
#define HDC1000_REG_DEV_ID 0xFF /* Device ID */
/* Fixed values */
#define HDC1000_VAL_MANF_ID 0x5449
#define HDC1000_VAL_DEV_ID 0x1000
#define HDC1000_VAL_CONFIG 0x1000 /* 14 bit, acquired in sequence */
/* Sensor selection/deselection */
#define SENSOR_SELECT() board_i2c_select(BOARD_I2C_INTERFACE_0, SENSOR_I2C_ADDRESS)
#define SENSOR_DESELECT() board_i2c_deselect()
/*---------------------------------------------------------------------------*/
/* Byte swap of 16-bit register value */
#define HI_UINT16(a) (((a) >> 8) & 0xFF)
#define LO_UINT16(a) ((a) & 0xFF)
#define SWAP(v) ((LO_UINT16(v) << 8) | HI_UINT16(v))
/*---------------------------------------------------------------------------*/
/* Raw data as returned from the sensor (Big Endian) */
typedef struct sensor_data {
uint16_t temp;
uint16_t hum;
} sensor_data_t;
/* Raw data, little endian */
static uint16_t raw_temp;
static uint16_t raw_hum;
/*---------------------------------------------------------------------------*/
static bool success;
static sensor_data_t data;
/*---------------------------------------------------------------------------*/
static int enabled = HDC_1000_SENSOR_STATUS_DISABLED;
/*---------------------------------------------------------------------------*/
/*
* Maximum measurement durations in clock ticks. We use 14bit resolution, thus:
* - Tmp: 6.35ms
* - RH: 6.5ms
*/
#define MEASUREMENT_DURATION 2
/*
* Wait SENSOR_STARTUP_DELAY clock ticks between activation and triggering a
* reading (max 15ms)
*/
#define SENSOR_STARTUP_DELAY 3
static struct ctimer startup_timer;
/*---------------------------------------------------------------------------*/
/**
* \brief Initialise the humidity sensor driver
* \return True if I2C operation successful
*/
static bool
sensor_init(void)
{
uint16_t val;
SENSOR_SELECT();
/* Enable reading data in one operation */
val = SWAP(HDC1000_VAL_CONFIG);
success = sensor_common_write_reg(HDC1000_REG_CONFIG, (uint8_t *)&val, 2);
SENSOR_DESELECT();
return success;
}
/*---------------------------------------------------------------------------*/
/**
* \brief Start measurement
*/
static void
start(void)
{
if(success) {
SENSOR_SELECT();
success = board_i2c_write_single(HDC1000_REG_TEMP);
SENSOR_DESELECT();
}
}
/*---------------------------------------------------------------------------*/
/**
* \brief Take readings from the sensor
* \return true of I2C operations successful
*/
static bool
read_data()
{
bool valid;
if(success) {
SENSOR_SELECT();
success = board_i2c_read((uint8_t *)&data, sizeof(data));
SENSOR_DESELECT();
/* Store temperature */
raw_temp = SWAP(data.temp);
/* Store humidity */
raw_hum = SWAP(data.hum);
}
valid = success;
success = true;
return valid;
}
/*---------------------------------------------------------------------------*/
/**
* \brief Convert raw data to temperature and humidity
* \param temp - converted temperature
* \param hum - converted humidity
*/
static void
convert(float *temp, float *hum)
{
/* Convert temperature to degrees C */
*temp = ((double)(int16_t)raw_temp / 65536) * 165 - 40;
/* Convert relative humidity to a %RH value */
*hum = ((double)raw_hum / 65536) * 100;
}
/*---------------------------------------------------------------------------*/
static void
notify_ready(void *not_used)
{
enabled = HDC_1000_SENSOR_STATUS_READINGS_READY;
/* Latch readings */
read_data();
sensors_changed(&hdc_1000_sensor);
}
/*---------------------------------------------------------------------------*/
/**
* \brief Returns a reading from the sensor
* \param type HDC_1000_SENSOR_TYPE_TEMP or HDC_1000_SENSOR_TYPE_HUMIDITY
* \return Temperature (centi degrees C) or Humidity (centi %RH)
*/
static int
value(int type)
{
int rv;
float temp;
float hum;
if(enabled != HDC_1000_SENSOR_STATUS_READINGS_READY) {
PRINTF("Sensor disabled or starting up (%d)\n", enabled);
return CC26XX_SENSOR_READING_ERROR;
}
if((type != HDC_1000_SENSOR_TYPE_TEMP) &&
type != HDC_1000_SENSOR_TYPE_HUMIDITY) {
PRINTF("Invalid type\n");
return CC26XX_SENSOR_READING_ERROR;
} else {
convert(&temp, &hum);
PRINTF("HDC: %04X %04X t=%d h=%d\n", raw_temp, raw_hum,
(int)(temp * 100), (int)(hum * 100));
if(type == HDC_1000_SENSOR_TYPE_TEMP) {
rv = (int)(temp * 100);
} else if(type == HDC_1000_SENSOR_TYPE_HUMIDITY) {
rv = (int)(hum * 100);
}
}
return rv;
}
/*---------------------------------------------------------------------------*/
/**
* \brief Configuration function for the HDC1000 sensor.
*
* \param type Activate, enable or disable the sensor. See below
* \param enable
*
* When type == SENSORS_HW_INIT we turn on the hardware
* When type == SENSORS_ACTIVE and enable==1 we enable the sensor
* When type == SENSORS_ACTIVE and enable==0 we disable the sensor
*/
static int
configure(int type, int enable)
{
switch(type) {
case SENSORS_HW_INIT:
raw_temp = 0;
raw_hum = 0;
memset(&data, 0, sizeof(data));
sensor_init();
enabled = HDC_1000_SENSOR_STATUS_INITIALISED;
break;
case SENSORS_ACTIVE:
/* Must be initialised first */
if(enabled == HDC_1000_SENSOR_STATUS_DISABLED) {
return HDC_1000_SENSOR_STATUS_DISABLED;
}
if(enable) {
start();
ctimer_set(&startup_timer, SENSOR_STARTUP_DELAY, notify_ready, NULL);
enabled = HDC_1000_SENSOR_STATUS_TAKING_READINGS;
} else {
ctimer_stop(&startup_timer);
enabled = HDC_1000_SENSOR_STATUS_INITIALISED;
}
break;
default:
break;
}
return enabled;
}
/*---------------------------------------------------------------------------*/
/**
* \brief Returns the status of the sensor
* \param type SENSORS_ACTIVE or SENSORS_READY
* \return One of the SENSOR_STATUS_xyz defines
*/
static int
status(int type)
{
switch(type) {
case SENSORS_ACTIVE:
case SENSORS_READY:
return enabled;
break;
default:
break;
}
return HDC_1000_SENSOR_STATUS_DISABLED;
}
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(hdc_1000_sensor, "HDC1000", value, configure, status);
/*---------------------------------------------------------------------------*/
/** @} */

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@ -0,0 +1,116 @@
/*
* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.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 copyright holder 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 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 HOLDER 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.
*/
/*
* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.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 copyright holder 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 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 HOLDER 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.
*/
/*---------------------------------------------------------------------------*/
/**
* \addtogroup sensortag-cc26xx-peripherals
* @{
*
* \defgroup sensortag-cc26xx-hdc-sensor SensorTag 2.0 TI HDC1000 Sensor
*
* Due to the time required for the sensor to startup, this driver is meant to
* be used in an asynchronous fashion. The caller must first activate the
* sensor by calling SENSORS_ACTIVATE(). This will trigger the sensor's startup
* sequence, but the call will not wait for it to complete so that the CPU can
* perform other tasks or drop to a low power mode. Once the sensor has taken
* readings, it will automatically go back to low power mode.
*
* Once the sensor is stable, the driver will retrieve readings from the sensor
* and latch them. It will then generate a sensors_changed event.
*
* The user can then retrieve readings by calling .value() and by passing
* either HDC_1000_SENSOR_TYPE_TEMP or HDC_1000_SENSOR_TYPE_HUMIDITY as the
* argument. Multiple calls to value() will not trigger new readings, they will
* simply return the most recent latched values.
*
* The user can query the sensor's status by calling .status()
*
* To get a fresh reading, the user must trigger a new reading cycle by calling
* SENSORS_ACTIVATE().
* @{
*
* \file
* Header file for the Sensortag-CC26ss TI HDC1000 sensor
*/
/*---------------------------------------------------------------------------*/
#ifndef HDC_1000_SENSOR_H
#define HDC_1000_SENSOR_H
/*---------------------------------------------------------------------------*/
#include "lib/sensors.h"
/*---------------------------------------------------------------------------*/
#define HDC_1000_SENSOR_TYPE_TEMP 1
#define HDC_1000_SENSOR_TYPE_HUMIDITY 2
/*---------------------------------------------------------------------------*/
/**
* \name HDC1000 driver states
* @{
*/
#define HDC_1000_SENSOR_STATUS_DISABLED 0 /**< Not initialised */
#define HDC_1000_SENSOR_STATUS_INITIALISED 1 /**< Initialised but idle */
#define HDC_1000_SENSOR_STATUS_TAKING_READINGS 2 /**< Readings in progress */
#define HDC_1000_SENSOR_STATUS_READINGS_READY 3 /**< Both readings ready */
/** @} */
/*---------------------------------------------------------------------------*/
extern const struct sensors_sensor hdc_1000_sensor;
/*---------------------------------------------------------------------------*/
#endif /* HDC_1000_SENSOR_H */
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/

View File

@ -41,7 +41,7 @@
#include "sensortag/bmp-280-sensor.h" #include "sensortag/bmp-280-sensor.h"
#include "sensortag/tmp-007-sensor.h" #include "sensortag/tmp-007-sensor.h"
#include "sensortag/opt-3001-sensor.h" #include "sensortag/opt-3001-sensor.h"
#include "sensortag/sht-21-sensor.h" #include "sensortag/hdc-1000-sensor.h"
#include "sensortag/mpu-9250-sensor.h" #include "sensortag/mpu-9250-sensor.h"
#include "sensortag/reed-relay.h" #include "sensortag/reed-relay.h"
@ -49,7 +49,7 @@
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** \brief Exports a global symbol to be used by the sensor API */ /** \brief Exports a global symbol to be used by the sensor API */
SENSORS(&button_left_sensor, &button_right_sensor, SENSORS(&button_left_sensor, &button_right_sensor,
&bmp_280_sensor, &tmp_007_sensor, &opt_3001_sensor, &sht_21_sensor, &bmp_280_sensor, &tmp_007_sensor, &opt_3001_sensor, &hdc_1000_sensor,
&mpu_9250_sensor, &reed_relay_sensor); &mpu_9250_sensor, &reed_relay_sensor);
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** @} */ /** @} */

View File

@ -1,386 +0,0 @@
/*
* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.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 copyright holder 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 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 HOLDER 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.
*/
/*---------------------------------------------------------------------------*/
/**
* \addtogroup sensortag-cc26xx-sht-sensor
* @{
*
* \file
* Driver for the Sensortag-CC26xx Sensirion SHT21 Humidity sensor
*/
/*---------------------------------------------------------------------------*/
#include "contiki-conf.h"
#include "sys/ctimer.h"
#include "lib/sensors.h"
#include "sht-21-sensor.h"
#include "sensor-common.h"
#include "board-i2c.h"
#include "ti-lib.h"
#include <stdint.h>
#include <string.h>
#include <stdio.h>
/*---------------------------------------------------------------------------*/
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
/*---------------------------------------------------------------------------*/
/* Sensor I2C address */
#define HAL_SHT21_I2C_ADDRESS 0x40
/*---------------------------------------------------------------------------*/
#define S_REG_LEN 2
#define DATA_LEN 3
/*---------------------------------------------------------------------------*/
/* Internal commands */
#define SHT21_CMD_TEMP_T_NH 0xF3 /* command trig. temp meas. no hold master */
#define SHT21_CMD_HUMI_T_NH 0xF5 /* command trig. humidity meas. no hold master */
#define SHT21_CMD_WRITE_U_R 0xE6 /* command write user register */
#define SHT21_CMD_READ_U_R 0xE7 /* command read user register */
#define SHT21_CMD_SOFT_RST 0xFE /* command soft reset */
/*---------------------------------------------------------------------------*/
#define HUMIDITY 0x00
#define TEMPERATURE 0x01
/*---------------------------------------------------------------------------*/
#define USR_REG_MASK 0x38 /* Mask off reserved bits (3,4,5) */
#define USR_REG_DEFAULT 0x02 /* Disable OTP reload */
#define USR_REG_RES_MASK 0x7E /* Only change bits 0 and 7 (meas. res.) */
#define USR_REG_11BITRES 0x81 /* 11-bit resolution */
/*---------------------------------------------------------------------------*/
#define USR_REG_TEST_VAL 0x83
/*---------------------------------------------------------------------------*/
#define DATA_SIZE 6
/*---------------------------------------------------------------------------*/
static uint8_t usr; /* User register value */
static uint8_t buf[DATA_SIZE]; /* Data buffer */
static bool success;
/*---------------------------------------------------------------------------*/
static int enabled = SHT_21_SENSOR_STATUS_DISABLED;
/*---------------------------------------------------------------------------*/
/*
* Maximum measurement durations in clock ticks. We use 11bit resolution, thus:
* - Tmp: 11ms
* - RH: 15ms
*/
#define MEASUREMENT_DURATION 3
/*
* Wait SENSOR_STARTUP_DELAY clock ticks between activation and triggering a
* reading
*/
#define SENSOR_STARTUP_DELAY 4
static struct ctimer startup_timer;
/*---------------------------------------------------------------------------*/
/**
* \brief Select the SHT sensor on the I2C-bus
*/
static void
select(void)
{
/* Select the SHT21 address */
board_i2c_select(BOARD_I2C_INTERFACE_0, HAL_SHT21_I2C_ADDRESS);
}
/*---------------------------------------------------------------------------*/
/**
* \brief Write a command over I2C
* \param cmd The command to send
* \return TRUE if the command was sent successfully
*/
static bool
write_cmd(uint8_t cmd)
{
/* Send command */
return board_i2c_write_single(cmd);
}
/*---------------------------------------------------------------------------*/
/*
* \brief Read data from the SHT over I2C
* \param buf Pointer to buffer where data will be stored
* \param len Number of bytes to read
* \return TRUE if the required number of bytes were received
*/
static bool
read_data(uint8_t *buf, uint8_t len)
{
/* Read data */
return board_i2c_read(buf, len);
}
/*---------------------------------------------------------------------------*/
/**
* @brief Initialise the SHT21 sensor
*/
static void
sensor_init(void)
{
select();
/* Set 11 bit resolution */
sensor_common_read_reg(SHT21_CMD_READ_U_R, &usr, 1);
usr &= USR_REG_RES_MASK;
usr |= USR_REG_11BITRES;
sensor_common_write_reg(SHT21_CMD_WRITE_U_R, &usr, 1);
success = true;
}
/*---------------------------------------------------------------------------*/
/**
* \brief Start a temperature measurement
*/
static void
start_temp(void)
{
if(success) {
select();
success = write_cmd(SHT21_CMD_TEMP_T_NH);
}
}
/*---------------------------------------------------------------------------*/
/**
* \brief Latch the last temperature measurement
*/
static void
latch_temp(void)
{
if(success) {
select();
success = read_data(buf, DATA_LEN);
}
}
/*---------------------------------------------------------------------------*/
/**
* \brief Start a humidity measurement
*/
static void
start_humidity(void)
{
if(success) {
select();
success = write_cmd(SHT21_CMD_HUMI_T_NH);
}
}
/*---------------------------------------------------------------------------*/
/**
* \brief Latch the last humidity measurement
*/
static void
latch_humidity(void)
{
if(success) {
select();
success = read_data(buf + DATA_LEN, DATA_LEN);
}
}
/*---------------------------------------------------------------------------*/
/**
* \brief Retrieve latched raw readings from buffer and store in variables
* \param raw_temp Pointer to a buffer where the temperature reading will be
* stored
* \param raw_hum Pointer to a buffer where the humidity reading will be
* stored
* \return TRUE on success
*/
static bool
get_readings(uint16_t *raw_temp, uint16_t *raw_hum)
{
bool valid;
valid = success;
if(!success) {
sensor_common_set_error_data(buf, DATA_SIZE);
}
/* Store temperature */
*raw_temp = buf[0] << 8 | buf[1];
/* [2] We ignore the CRC */
/* Store humidity */
*raw_hum = buf[3] << 8 | buf[4];
/* [5] We ignore the CRC */
success = true;
return valid;
}
/*---------------------------------------------------------------------------*/
/**
* \brief Convert raw data to temperature (degrees C) and rel. humidity (%RH)
* \param raw_temp Raw temperature data (little endian)
* \param raw_hum Raw humidity data (little endian)
* \param temp Converted temperature value
* \param hum Converted humidity value
*/
static void
convert(uint16_t raw_temp, uint16_t raw_hum, float *temp, float *hum)
{
/* Convert temperature to degrees C */
raw_temp &= ~0x0003; /* clear bits [1..0] (status bits) */
*temp = -46.85 + 175.72 / 65536 * (double)(int16_t)raw_temp;
/* Convert relative humidity to a %RH value */
raw_hum &= ~0x0003; /* clear bits [1..0] (status bits) */
/* RH= -6 + 125 * SRH / 2^16 */
*hum = -6.0 + 125.0 / 65536 * (double)raw_hum;
}
/*---------------------------------------------------------------------------*/
static void
state_machine(void *not_used)
{
switch(enabled) {
case SHT_21_SENSOR_STATUS_INITIALISED:
start_temp();
enabled = SHT_21_SENSOR_STATUS_READING_TEMP;
break;
case SHT_21_SENSOR_STATUS_READING_TEMP:
latch_temp();
start_humidity();
enabled = SHT_21_SENSOR_STATUS_READING_HUMIDITY;
break;
case SHT_21_SENSOR_STATUS_READING_HUMIDITY:
latch_humidity();
enabled = SHT_21_SENSOR_STATUS_READINGS_READY;
sensors_changed(&sht_21_sensor);
return;
case SHT_21_SENSOR_STATUS_READINGS_READY:
case SHT_21_SENSOR_STATUS_DISABLED:
default:
ctimer_stop(&startup_timer);
return;
}
ctimer_set(&startup_timer, MEASUREMENT_DURATION, state_machine, NULL);
}
/*---------------------------------------------------------------------------*/
/**
* \brief Returns a reading from the sensor
* \param type SHT_21_SENSOR_TYPE_TEMP or SHT_21_SENSOR_TYPE_HUMIDITY
* \return Temperature (centi degrees C) or Humidity (centi %RH)
*/
static int
value(int type)
{
int rv;
uint16_t raw_temp;
uint16_t raw_hum;
float temp;
float hum;
if(enabled != SHT_21_SENSOR_STATUS_READINGS_READY) {
PRINTF("Sensor disabled or starting up (%d)\n", enabled);
return CC26XX_SENSOR_READING_ERROR;
}
if((type != SHT_21_SENSOR_TYPE_TEMP) && type != SHT_21_SENSOR_TYPE_HUMIDITY) {
PRINTF("Invalid type\n");
return CC26XX_SENSOR_READING_ERROR;
} else {
rv = get_readings(&raw_temp, &raw_hum);
if(rv == 0) {
return CC26XX_SENSOR_READING_ERROR;
}
convert(raw_temp, raw_hum, &temp, &hum);
PRINTF("SHT: %04X %04X t=%d h=%d\n", raw_temp, raw_hum,
(int)(temp * 100), (int)(hum * 100));
if(type == SHT_21_SENSOR_TYPE_TEMP) {
rv = (int)(temp * 100);
} else if(type == SHT_21_SENSOR_TYPE_HUMIDITY) {
rv = (int)(hum * 100);
}
}
return rv;
}
/*---------------------------------------------------------------------------*/
/**
* \brief Configuration function for the SHT21 sensor.
*
* \param type Activate, enable or disable the sensor. See below
* \param enable
*
* When type == SENSORS_HW_INIT we turn on the hardware
* When type == SENSORS_ACTIVE and enable==1 we enable the sensor
* When type == SENSORS_ACTIVE and enable==0 we disable the sensor
*/
static int
configure(int type, int enable)
{
switch(type) {
case SENSORS_HW_INIT:
sensor_init();
enabled = SHT_21_SENSOR_STATUS_INITIALISED;
break;
case SENSORS_ACTIVE:
/* Must be initialised first */
if(enabled == SHT_21_SENSOR_STATUS_DISABLED) {
return SHT_21_SENSOR_STATUS_DISABLED;
}
if(enable) {
enabled = SHT_21_SENSOR_STATUS_INITIALISED;
ctimer_set(&startup_timer, SENSOR_STARTUP_DELAY, state_machine, NULL);
} else {
ctimer_stop(&startup_timer);
enabled = SHT_21_SENSOR_STATUS_INITIALISED;
}
break;
default:
break;
}
return enabled;
}
/*---------------------------------------------------------------------------*/
/**
* \brief Returns the status of the sensor
* \param type SENSORS_ACTIVE or SENSORS_READY
* \return One of the SENSOR_STATUS_xyz defines
*/
static int
status(int type)
{
switch(type) {
case SENSORS_ACTIVE:
case SENSORS_READY:
return enabled;
break;
default:
break;
}
return SHT_21_SENSOR_STATUS_DISABLED;
}
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(sht_21_sensor, "SHT21", value, configure, status);
/*---------------------------------------------------------------------------*/
/** @} */

View File

@ -1,85 +0,0 @@
/*
* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.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 copyright holder 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 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 HOLDER 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.
*/
/*---------------------------------------------------------------------------*/
/**
* \addtogroup sensortag-cc26xx-peripherals
* @{
*
* \defgroup sensortag-cc26xx-sht-sensor SensorTag 2.0 Humidity Sensor
*
* Due to the time required between triggering a reading and the reading
* becoming available, this driver is meant to be used in an asynchronous
* fashion. The caller must first activate the sensor by calling
* SENSORS_ACTIVATE(). This will trigger a cycle which will read both
* temperature and humidity, but the call will not wait for the cycle to
* complete so that the CPU can perform other tasks or drop to a low power
* mode.
*
* Once readings are available, the driver will generate a sensors_changed
* event.
*
* Calls to .status() will return the driver's state which could indicate that
* a measurement is in progress (different return values for each) or that
* readings are ready.
*
* Multiple calls to value() will simply return the reading that was latched
* after the last cycle. In order to obtain fresh readings, a new cycle must be
* started by a new call to SENSORS_ACTIVATE.
* @{
*
* \file
* Header file for the Sensortag-CC26ss Sensirion SHT21 Humidity sensor
*/
/*---------------------------------------------------------------------------*/
#ifndef SHT_21_SENSOR_H_
#define SHT_21_SENSOR_H_
/*---------------------------------------------------------------------------*/
#define SHT_21_SENSOR_TYPE_TEMP 1
#define SHT_21_SENSOR_TYPE_HUMIDITY 2
/*---------------------------------------------------------------------------*/
/**
* \name SHT21 driver states
* @{
*/
#define SHT_21_SENSOR_STATUS_DISABLED 0 /**< Not initialised */
#define SHT_21_SENSOR_STATUS_INITIALISED 1 /**< Initialised but idle */
#define SHT_21_SENSOR_STATUS_READING_TEMP 2 /**< Temp reading in progress */
#define SHT_21_SENSOR_STATUS_READING_HUMIDITY 3 /**< Humidity reading in progress */
#define SHT_21_SENSOR_STATUS_READINGS_READY 4 /**< Both readings ready */
/** @} */
/*---------------------------------------------------------------------------*/
extern const struct sensors_sensor sht_21_sensor;
/*---------------------------------------------------------------------------*/
#endif /* SHT_21_SENSOR_H_ */
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/