add test app for mma8652 accelerometer driver

tests/driver_mma8652/Makefile

@@ -0,0 +1,36 @@
+APPLICATION = driver_mma8652
+include ../Makefile.tests_common
+
+FEATURES_REQUIRED = periph_i2c
+
+USEMODULE += mma8652
+USEMODULE += vtimer
+
+ifneq (,$(TEST_MMA8652_I2C))
+  CFLAGS += -DTEST_MMA8652_I2C=$(TEST_MMA8652_I2C)
+else
+  CFLAGS += -DTEST_MMA8652_I2C=I2C_0
+endif
+ifneq (,$(TEST_MMA8652_ADDR))
+  CFLAGS += -DTEST_MMA8652_ADDR=$(TEST_MMA8652_ADDR)
+else
+  CFLAGS += -DTEST_MMA8652_ADDR=0x1D
+endif
+
+ifneq (,$(TEST_MMA8652_USER_OFFSET_X))
+  CFLAGS += -DTEST_MMA8652_USER_OFFSET_X=$(TEST_MMA8652_USER_OFFSET_X)
+else
+  CFLAGS += -DTEST_MMA8652_USER_OFFSET_X=0
+endif
+ifneq (,$(TEST_MMA8652_USER_OFFSET_Y))
+  CFLAGS += -DTEST_MMA8652_USER_OFFSET_Y=$(TEST_MMA8652_USER_OFFSET_Y)
+else
+  CFLAGS += -DTEST_MMA8652_USER_OFFSET_Y=0
+endif
+ifneq (,$(TEST_MMA8652_USER_OFFSET_Z))
+  CFLAGS += -DTEST_MMA8652_USER_OFFSET_Z=$(TEST_MMA8652_USER_OFFSET_Z)
+else
+  CFLAGS += -DTEST_MMA8652_USER_OFFSET_Z=0
+endif
+
+include $(RIOTBASE)/Makefile.include

tests/driver_mma8652/README.md

@@ -0,0 +1,10 @@
+# About
+This is a manual test application for the MMA8652 accelerometer driver.
+
+# Usage
+This test application will initialize the MMA8652 sensor with the following parameters:
+ - full scale parameter set to +/-2 g
+ - 6.25 Hz output data-rate
+
+After initialization, the sensor reads the x-, y-, z-axis values every 1 s
+and prints them to STDOUT.

tests/driver_mma8652/main.c

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2014 Freie Universität Berlin
+ * Copyright (C) 2014 PHYTEC Messtechnik GmbH
+ *
+ * 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 MMA8652 accelerometer driver.
+ *
+ * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
+ * @author      Johann Fischer <j.fischer@phytec.de>
+ *
+ * @}
+ */
+
+#ifndef TEST_MMA8652_I2C
+#error "TEST_MMA8652_I2C not defined"
+#endif
+#ifndef TEST_MMA8652_ADDR
+#error "TEST_MMA8652_ADDR not defined"
+#endif
+
+#include <stdio.h>
+
+#include "vtimer.h"
+#include "mma8652.h"
+
+#define SLEEP       (1000 * 1000U)
+
+int main(void)
+{
+    mma8652_t dev;
+    int16_t x, y, z;
+    uint8_t status;
+
+    puts("MMA8652 accelerometer driver test application\n");
+    printf("Initializing MMA8652 accelerometer at I2C_%i... ", TEST_MMA8652_I2C);
+
+    if (mma8652_init(&dev, TEST_MMA8652_I2C, TEST_MMA8652_ADDR,
+                     MMA8652_DATARATE_DEFAULT,
+                     MMA8652_FS_RANGE_DEFAULT) == 0) {
+        puts("[OK]\n");
+    }
+    else {
+        puts("[Failed]");
+        return -1;
+    }
+
+    if (mma8652_set_user_offset(&dev, TEST_MMA8652_USER_OFFSET_X,
+                                TEST_MMA8652_USER_OFFSET_Y,
+                                TEST_MMA8652_USER_OFFSET_Z)) {
+        puts("Set user offset correction failed.");
+        return -1;
+    }
+
+    if (mma8652_set_active(&dev)) {
+        puts("Measurement start failed.");
+        return -1;
+    }
+
+    while (1) {
+        mma8652_read(&dev, &x, &y, &z, &status);
+        printf("Acceleration, raw: X: %d Y: %d Z: %d S: %2x\n", x, y, z, status);
+        vtimer_usleep(SLEEP);
+    }
+
+    return 0;
+}