tests: add hts211 driver test app

drivers/hts221/hts221.c

@@ -27,7 +27,7 @@
 #include "periph/i2c.h"
 #include "xtimer.h"
 
-#define ENABLE_DEBUG    (1)
+#define ENABLE_DEBUG    (0)
 #include "debug.h"
 
 #define I2C_SPEED       I2C_SPEED_FAST

tests/driver_hts221/Makefile

@@ -0,0 +1,9 @@
+APPLICATION = driver_hts221
+include ../Makefile.tests_common
+
+FEATURES_REQUIRED = periph_i2c
+
+USEMODULE += hts221
+USEMODULE += xtimer
+
+include $(RIOTBASE)/Makefile.include

tests/driver_hts221/main.c

@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2017 HAW Hamburg
+ *
+ * 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       HTS221 humidity and temperature sensor driver test application
+ *
+ * @author      Sebastian Meiling <s@mlng.net>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+
+#include "hts221.h"
+#include "hts221_params.h"
+#include "xtimer.h"
+
+#define SLEEP_S     (2U)
+static hts221_t dev;
+
+int main(void)
+{
+    printf("Init HTS221 on I2C_DEV(%i)\n", (int)hts221_params[0].i2c);
+    if (hts221_init(&dev, &hts221_params[0]) != HTS221_OK) {
+        puts("[FAILED]");
+        return 1;
+    }
+    if (hts221_power_on(&dev) != HTS221_OK) {
+        puts("[FAILED] to set power on!");
+        return 2;
+    }
+    if (hts221_set_rate(&dev, dev.p.rate) != HTS221_OK) {
+        puts("[FAILED] to set continuous mode!");
+        return 3;
+    }
+
+    while(1) {
+        uint16_t hum = 0;
+        int16_t temp = 0;
+        if (hts221_read_humidity(&dev, &hum) != HTS221_OK) {
+            puts(" -- failed to humidity!");
+        }
+        if (hts221_read_temperature(&dev, &temp) != HTS221_OK) {
+            puts(" -- failed to temperature!");
+        }
+        bool negative = (temp < 0);
+        if (negative) {
+            temp = -temp;
+        }
+        printf("H: %u.%u%%, T:%c%u.%u°C\n", (hum/10), (hum%10),
+               (negative ? '-' : ' '), (temp/10), (temp%10));
+        xtimer_sleep(SLEEP_S);
+    }
+    return 0;
+}