tests/driver_isl29125: initial import

tests/driver_isl29125/Makefile

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+APPLICATION = driver_isl29125
+include ../Makefile.tests_common
+
+FEATURES_REQUIRED = periph_i2c
+
+USEMODULE += isl29125
+USEMODULE += vtimer
+
+ifneq (,$(TEST_ISL29125_I2C))
+  CFLAGS += -DTEST_ISL29125_I2C=$(TEST_ISL29125_I2C)
+else
+  # set random default
+  CFLAGS += -DTEST_ISL29125_I2C=I2C_0
+endif
+ifneq (,$(TEST_ISL29125_IRQ_PIN))
+  CFLAGS += -DTEST_ISL29125_IRQ_PIN=$(TEST_ISL29125_IRQ_PIN)
+else
+  # set random default
+  CFLAGS += -DTEST_ISL29125_IRQ_PIN=GPIO_5
+endif
+
+include $(RIOTBASE)/Makefile.include

tests/driver_isl29125/README.md

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+# About
+This is a manual test application for the ISL29125 light sensor driver.
+
+# Usage
+This test application will initialize the list sensor with the following parameters:
+ - Mode: All modes are tested once, then RGB mode is used continuously
+ - Range: 16000 lux
+ - Resolution: 16 bit
+
+After initialization, the sensor value is read every 250ms and printed to the stdout.
+
+Expose the sensor to varying light sources to see changing readouts.

tests/driver_isl29125/main.c

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+/*
+ * Copyright 2015 Ludwig Ortmann
+ *
+ * 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 ISL29125 RGB light sensor
+ *
+ * @author      Ludwig Ortmann <ludwig.ortmann@fu-berlin.de>
+ *
+ * @}
+ */
+
+#ifndef TEST_ISL29125_I2C
+#error "TEST_ISL29125_I2C not defined"
+#endif
+
+#ifndef TEST_ISL29125_IRQ_PIN
+#error "ISL29125_IRQ_PIN not defined"
+#endif
+
+#include <stdio.h>
+#include <string.h>
+
+#include "vtimer.h"
+#include "isl29125.h"
+
+#define SLEEP       (250 * 1000U)
+
+int main(void)
+{
+    isl29125_t dev;
+    isl29125_rgb_t data;
+    color_rgb_t data8bit;
+    memset(&data, 0x00, sizeof(data));
+
+    puts("ISL29125 light sensor test application\n");
+    printf("Initializing ISL29125 sensor at I2C_%i... ", TEST_ISL29125_I2C);
+    if (isl29125_init(&dev, TEST_ISL29125_I2C, TEST_ISL29125_IRQ_PIN,
+                ISL29125_MODE_RGB, ISL29125_RANGE_10K,
+                ISL29125_RESOLUTION_16) == 0) {
+        puts("[OK]\n");
+    }
+    else {
+        puts("[Failed]");
+        return 1;
+    }
+
+    /* try out some modes */
+    static const isl29125_mode_t modes[] = {
+        ISL29125_MODE_DOWN, ISL29125_MODE_STANDBY, ISL29125_MODE_RGB,
+        ISL29125_MODE_R, ISL29125_MODE_G, ISL29125_MODE_B,
+        ISL29125_MODE_RG, ISL29125_MODE_GB};
+    static const char* mode_names[] = {
+        "ISL29125_MODE_DOWN", "ISL29125_MODE_STANDBY", "ISL29125_MODE_RGB",
+        "ISL29125_MODE_R", "ISL29125_MODE_G", "ISL29125_MODE_B",
+        "ISL29125_MODE_RG", "ISL29125_MODE_GB"};
+
+    for (int i = 0; i < sizeof(modes); i++) {
+        printf("Setting mode %s\n", mode_names[i]);
+        isl29125_set_mode(&dev, modes[i]);
+        vtimer_usleep(SLEEP);
+        isl29125_read_rgb_color(&dev, &data8bit);
+        printf("RGB value: (%3i / %3i / %3i) 8 bit\n",
+                data8bit.r, data8bit.g, data8bit.b);
+    }
+
+    puts("Resetting mode to RGB and reading continuously");
+    isl29125_set_mode(&dev, ISL29125_MODE_RGB);
+    vtimer_usleep(SLEEP);
+    while (1) {
+        isl29125_read_rgb_lux(&dev, &data);
+        printf("RGB value: (%5i / %5i / %5i) lux\n",
+                (int)data.red, (int)data.green, (int)data.blue);
+        vtimer_usleep(SLEEP);
+    }
+
+    return 0;
+}