examples: enviro_sensor: Initial commit

Signed-off-by: Alistair Francis <[email protected]>

examples/enviro_sensor/Makefile

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+# Makefile for user application
+
+# Specify this directory relative to the current application.
+TOCK_USERLAND_BASE_DIR = ../..
+
+# Which files to compile.
+C_SRCS := $(wildcard *.c)
+
+# Include userland master makefile. Contains rules and flags for actually
+# building the application.
+include $(TOCK_USERLAND_BASE_DIR)/AppMakefile.mk

examples/enviro_sensor/README.md

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+Environment Sensor
+==================
+
+A simple example application that reads sensor data from the kernel and
+prints it in a loop.

examples/enviro_sensor/main.c

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+#include <stdbool.h>
+#include <stdio.h>
+
+#include <libtock-sync/sensors/ambient_light.h>
+#include <libtock-sync/sensors/humidity.h>
+#include <libtock-sync/sensors/moisture.h>
+#include <libtock-sync/sensors/temperature.h>
+#include <libtock-sync/services/alarm.h>
+
+int main(void) {
+  bool temp_exists = false;
+  bool humi_exists = false;
+  bool lux_exists = false;
+  bool mois_exists = false;
+  int humi = 0;
+  int temp = 0;
+  int lux  = 0;
+  int mois = 0;
+
+  printf("Probing data from sensors.\r\n");
+
+  if (libtock_temperature_exists()) {
+    printf("Temperature sensor exists.\r\n");
+    temp_exists = true;
+  }
+
+  if (libtock_humidity_exists()) {
+    printf("Humidity sensor exists.\r\n");
+    humi_exists = true;
+  }
+
+  if (libtock_ambient_light_exists()) {
+    printf("Ambient Light sensor exists.\r\n");
+    lux_exists = true;
+  }
+
+  if (libtock_moisture_exists()) {
+    printf("Moisture sensor exists.\r\n");
+    mois_exists = true;
+  }
+
+  while (1) {
+    if (temp_exists) {
+      libtocksync_temperature_read(&temp);
+      printf("Temperature: %dmC\r\n", temp);
+    }
+
+    if (humi_exists) {
+      libtocksync_humidity_read(&humi);
+      printf("Humidity: %dm%%\r\n", humi);
+    }
+
+    if (lux_exists) {
+      libtocksync_ambient_light_read_intensity(&lux);
+      printf("Ambient Light Intensity: %dlx\r\n", lux);
+    }
+
+    if (mois_exists) {
+      libtocksync_moisture_read(&mois);
+      printf("Moisture: %dm%% \r\n", mois);
+    }
+
+    libtocksync_alarm_delay_ms(4000);
+  }
+}