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

Replace STH21 with HDC1000 for the CC2650 SensorTag

examples/cc26xx/cc26xx-demo.c

@@ -143,11 +143,11 @@ AUTOSTART_PROCESSES(&cc26xx_demo_process);
 #define SENSOR_READING_PERIOD (CLOCK_SECOND * 20)
 #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_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_mpu_reading(void *not_used);
 /*---------------------------------------------------------------------------*/
@@ -214,27 +214,27 @@ get_tmp_reading()
 }
 /*---------------------------------------------------------------------------*/
 static void
-get_sht_reading()
+get_hdc_reading()
 {
   int value;
   clock_time_t next = SENSOR_READING_PERIOD +
     (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) {
-    printf("SHT: Temp=%d.%02d C\n", value / 100, value % 100);
+    printf("HDC: Temp=%d.%02d C\n", value / 100, value % 100);
   } 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) {
-    printf("SHT: Humidity=%d.%02d %%RH\n", value / 100, value % 100);
+    printf("HDC: Humidity=%d.%02d %%RH\n", value / 100, value % 100);
   } 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
@@ -311,9 +311,9 @@ init_opt_reading(void *not_used)
 }
 /*---------------------------------------------------------------------------*/
 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
@@ -360,7 +360,7 @@ static void
 init_sensor_readings(void)
 {
 #if BOARD_SENSORTAG
-  SENSORS_ACTIVATE(sht_21_sensor);
+  SENSORS_ACTIVATE(hdc_1000_sensor);
   SENSORS_ACTIVATE(tmp_007_sensor);
   SENSORS_ACTIVATE(opt_3001_sensor);
   SENSORS_ACTIVATE(bmp_280_sensor);
@@ -450,8 +450,8 @@ PROCESS_THREAD(cc26xx_demo_process, ev, data)
         get_bmp_reading();
       } else if(ev == sensors_event && data == &opt_3001_sensor) {
         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) {
         get_tmp_reading();
       } else if(ev == sensors_event && data == &mpu_9250_sensor) {

examples/cc26xx/cc26xx-web-demo/cc26xx-web-demo.c

@@ -68,7 +68,7 @@ PROCESS(cc26xx_web_demo_process, "CC26XX Web Demo");
 struct ctimer batmon_timer;
 
 #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
 /*---------------------------------------------------------------------------*/
 /* 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,
             "Air Temp", "air-temp", "bmp_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);
-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);
 DEMO_SENSOR(tmp_amb, CC26XX_WEB_DEMO_SENSOR_TMP_AMBIENT,
             "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
 static void init_bmp_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_mpu_reading(void *data);
 #endif
@@ -526,42 +526,42 @@ get_tmp_reading()
 }
 /*---------------------------------------------------------------------------*/
 static void
-get_sht_reading()
+get_hdc_reading()
 {
   int value;
   char *buf;
   clock_time_t next = SENSOR_READING_PERIOD +
     (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) {
-      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);
       snprintf(buf, CC26XX_WEB_DEMO_CONVERTED_LEN, "%d.%02d", 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) {
-      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);
       snprintf(buf, CC26XX_WEB_DEMO_CONVERTED_LEN, "%d.%02d", value / 100,
                value % 100);
     }
   }
 
-  ctimer_set(&sht_timer, next, init_sht_reading, NULL);
+  ctimer_set(&hdc_timer, next, init_hdc_reading, NULL);
 }
 /*---------------------------------------------------------------------------*/
 static void
@@ -702,12 +702,12 @@ init_bmp_reading(void *data)
 }
 /*---------------------------------------------------------------------------*/
 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 {
-    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
   init_bmp_reading(NULL);
   init_light_reading(NULL);
-  init_sht_reading(NULL);
+  init_hdc_reading(NULL);
   init_tmp_reading(NULL);
   init_mpu_reading(NULL);
 #endif /* BOARD_SENSORTAG */
@@ -781,8 +781,8 @@ init_sensors(void)
 
   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_y_reading);
@@ -873,8 +873,8 @@ PROCESS_THREAD(cc26xx_web_demo_process, ev, data)
       get_bmp_reading();
     } else if(ev == sensors_event && data == &opt_3001_sensor) {
       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) {
       get_tmp_reading();
     } else if(ev == sensors_event && data == &mpu_9250_sensor) {

examples/cc26xx/cc26xx-web-demo/cc26xx-web-demo.h

@@ -121,8 +121,8 @@
 #define CC26XX_WEB_DEMO_SENSOR_BMP_TEMP      3
 #define CC26XX_WEB_DEMO_SENSOR_TMP_AMBIENT   4
 #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_MPU_ACC_X     9
 #define CC26XX_WEB_DEMO_SENSOR_MPU_ACC_Y     10

examples/cc26xx/cc26xx-web-demo/coap-server.c

@@ -66,8 +66,8 @@ extern resource_t res_bmp280_temp;
 extern resource_t res_bmp280_press;
 extern resource_t res_tmp007_amb;
 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_mpu_acc_x;
 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_tmp007_amb, "sen/tmp/amb");
   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_mpu_acc_x, "sen/mpu/acc/x");
   rest_activate_resource(&res_mpu_acc_y, "sen/mpu/acc/y");

examples/cc26xx/cc26xx-web-demo/resources/res-sensors.c

@@ -229,28 +229,28 @@ RESOURCE(res_bmp280_press,
          "title=\"Barometer (Pressure)\";rt=\"hPa (hectopascal / millibar)\"",
          res_get_handler_bmp_press, NULL, NULL, NULL);
 /*---------------------------------------------------------------------------*/
-/* SHT21 sensor resources and handler: Temperature, Pressure */
+/* HDC1000 sensor resources and handler: Temperature, Pressure */
 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)
 {
-  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);
 }
 /*---------------------------------------------------------------------------*/
 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)
 {
-  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);
 }
 /*---------------------------------------------------------------------------*/
-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 */
 static void

platform/srf06-cc26xx/README.md

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

platform/srf06-cc26xx/sensortag/Makefile.sensortag

@@ -3,6 +3,6 @@ CFLAGS += -DBACKDOOR_IOID=0x00000000
 
 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 += 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 += board.c board-spi.c board-i2c.c

platform/srf06-cc26xx/sensortag/board-peripherals.h

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

platform/srf06-cc26xx/sensortag/board.c

@@ -76,7 +76,7 @@ shutdown_handler(uint8_t mode)
     SENSORS_DEACTIVATE(bmp_280_sensor);
     SENSORS_DEACTIVATE(opt_3001_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);
   }
 }

platform/srf06-cc26xx/sensortag/hdc-1000-sensor.c

@@ -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);
+/*---------------------------------------------------------------------------*/
+/** @} */

platform/srf06-cc26xx/sensortag/hdc-1000-sensor.h

@@ -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 */
+/*---------------------------------------------------------------------------*/
+/**
+ * @}
+ * @}
+ */

platform/srf06-cc26xx/sensortag/sensortag-sensors.c

@@ -41,7 +41,7 @@
 #include "sensortag/bmp-280-sensor.h"
 #include "sensortag/tmp-007-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/reed-relay.h"
 
@@ -49,7 +49,7 @@
 /*---------------------------------------------------------------------------*/
 /** \brief Exports a global symbol to be used by the sensor API */
 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);
 /*---------------------------------------------------------------------------*/
 /** @} */

platform/srf06-cc26xx/sensortag/sht-21-sensor.c

@@ -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);
-/*---------------------------------------------------------------------------*/
-/** @} */

platform/srf06-cc26xx/sensortag/sht-21-sensor.h

@@ -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_ */
-/*---------------------------------------------------------------------------*/
-/**
- * @}
- * @}
- */