Initial commit

app/src/main.c

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2021 Nordic Semiconductor ASA
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/kernel.h>
+#include <zephyr/drivers/sensor.h>
+#include <zephyr/logging/log.h>
+
+#include <app/drivers/blink.h>
+
+#include <app_version.h>
+
+LOG_MODULE_REGISTER(main, CONFIG_APP_LOG_LEVEL);
+
+#define BLINK_PERIOD_MS_STEP 100U
+#define BLINK_PERIOD_MS_MAX  1000U
+
+int main(void)
+{
+	int ret;
+	unsigned int period_ms = BLINK_PERIOD_MS_MAX;
+	const struct device *sensor, *blink;
+	struct sensor_value last_val = { 0 }, val;
+
+	printk("Zephyr Example Application %s\n", APP_VERSION_STRING);
+
+	sensor = DEVICE_DT_GET(DT_NODELABEL(example_sensor));
+	if (!device_is_ready(sensor)) {
+		LOG_ERR("Sensor not ready");
+		return 0;
+	}
+
+	blink = DEVICE_DT_GET(DT_NODELABEL(blink_led));
+	if (!device_is_ready(blink)) {
+		LOG_ERR("Blink LED not ready");
+		return 0;
+	}
+
+	ret = blink_off(blink);
+	if (ret < 0) {
+		LOG_ERR("Could not turn off LED (%d)", ret);
+		return 0;
+	}
+
+	printk("Use the sensor to change LED blinking period\n");
+
+	while (1) {
+		ret = sensor_sample_fetch(sensor);
+		if (ret < 0) {
+			LOG_ERR("Could not fetch sample (%d)", ret);
+			return 0;
+		}
+
+		ret = sensor_channel_get(sensor, SENSOR_CHAN_PROX, &val);
+		if (ret < 0) {
+			LOG_ERR("Could not get sample (%d)", ret);
+			return 0;
+		}
+
+		if ((last_val.val1 == 0) && (val.val1 == 1)) {
+			if (period_ms == 0U) {
+				period_ms = BLINK_PERIOD_MS_MAX;
+			} else {
+				period_ms -= BLINK_PERIOD_MS_STEP;
+			}
+
+			printk("Proximity detected, setting LED period to %u ms\n",
+			       period_ms);
+			blink_set_period_ms(blink, period_ms);
+		}
+
+		last_val = val;
+
+		k_sleep(K_MSEC(100));
+	}
+
+	return 0;
+}
+