tests/driver_hih6130: test application for drivers/hih6130

tests/driver_hih6130/Makefile

+APPLICATION = driver_hih6130
+include ../Makefile.tests_common
+
+FEATURES_REQUIRED = periph_i2c
+
+USEMODULE += hih6130
+USEMODULE += vtimer
+
+ifneq (,$(TEST_HIH6130_I2C))
+  CFLAGS += -DTEST_HIH6130_I2C=$(TEST_HIH6130_I2C)
+else
+  # set arbitrary default
+  CFLAGS += -DTEST_HIH6130_I2C=I2C_0
+endif
+ifneq (,$(TEST_HIH6130_ADDR))
+  CFLAGS += -DTEST_HIH6130_ADDR=$(TEST_HIH6130_ADDR)
+else
+  # factory default address
+  CFLAGS += -DTEST_HIH6130_ADDR=0x27
+endif
+
+include $(RIOTBASE)/Makefile.include

tests/driver_hih6130/README.md

+# About
+This is a manual test application for the HIH6130 humidity and temperature sensor.
+
+# Usage
+
+After initialization, the sensor reads the measurement values every 100ms
+and prints them to the STDOUT.

tests/driver_hih6130/main.c

+/*
+ * Copyright (C) 2015 Eistec AB
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup tests
+ * @{
+ *
+ * @file
+ * @brief       Test application for the HIH6130 sensor driver
+ *
+ * @author      Joakim Gebart <joakim.gebart@eistec.se>
+ *
+ * @}
+ */
+
+#ifndef TEST_HIH6130_I2C
+#error "TEST_HIH6130_I2C not defined"
+#endif
+#ifndef TEST_HIH6130_ADDR
+#error "TEST_HIH6130_ADDR not defined"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+#include "vtimer.h"
+#include "hih6130.h"
+
+#define SLEEP    (100 * 1000U)
+
+int main(void)
+{
+    hih6130_t dev;
+
+    puts("HIH6130 sensor driver test application\n");
+    printf("Initializing I2C_%i... ", TEST_HIH6130_I2C);
+    if (i2c_init_master(TEST_HIH6130_I2C, I2C_SPEED_FAST) < 0) {
+        puts("[Failed]");
+        return -1;
+    }
+    puts("[OK]");
+
+    printf("Initializing HIH6130 sensor at I2C_%i, address 0x%02x... ",
+        TEST_HIH6130_I2C, TEST_HIH6130_ADDR);
+    hih6130_init(&dev, TEST_HIH6130_I2C, TEST_HIH6130_ADDR);
+    puts("[OK]");
+
+    while (1) {
+        float hum = 0.f;
+        float temp = 0.f;
+        int status;
+        float integral = 0.f;
+        float fractional;
+
+        vtimer_usleep(SLEEP);
+
+        status = hih6130_get_humidity_temperature_float(&dev, &hum, &temp);
+        if (status < 0) {
+            printf("Communication error: %d\n", status);
+            continue;
+        } else if (status == 1) {
+            puts("Stale values");
+        }
+        /* Several platforms usually build with nano.specs, (without float printf) */
+        /* Split value into two integer parts for printing. */
+        fractional = modff(hum, &integral);
+        printf("humidity: %4d.%04u %%",
+            (int)integral, (unsigned int)abs(fractional * 10000.f));
+        fractional = modff(temp, &integral);
+        printf("  temperature: %4d.%04u C\n",
+            (int)integral, (unsigned int)abs(fractional * 10000.f));
+    }
+
+    return 0;
+}