Diff: main.cpp

Revision:

0:aa329ecdcc9b

diff -r 000000000000 -r aa329ecdcc9b main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue May 14 13:01:48 2019 +0000
@@ -0,0 +1,60 @@
+/* Includes */
+#include "mbed.h"
+#include "XNucleoIKS01A2.h"
+
+// create a DigitalOut objects for the LED
+DigitalOut led(LED1);
+
+/* Instantiate the expansion board */
+static XNucleoIKS01A2 *sensor = XNucleoIKS01A2::instance(D14, D15, D4, D5);
+
+
+// Create 2 Ticker objects for a recurring interrupts. One for blink a LED and the other one to update the sensor lectures periodicly.
+Ticker blinky; 
+Ticker update;
+
+/* create a serial objects to communicate via USB */
+Serial pc(USBTX, USBRX);
+
+volatile float TEMPERATURE_C;
+volatile float TEMPERATURE_F;
+volatile float TEMPERATURE_K;
+volatile float HUMIDITY;
+volatile float PRESSURE;
+
+bool measurement_update = false;
+
+void blinky_handler()
+{
+    led = !led;   
+}
+
+void sensor_handler()
+{
+    measurement_update = true;    
+}
+
+int main()
+{
+    /* Attach a function to be called by the Ticker objects at a specific interval in seconds*/
+    blinky.attach(&blinky_handler, 0.5);
+    update.attach(&sensor_handler, 3);
+    
+    while(1){
+        if (measurement_update == true){
+            /* read the enviornmental data from sensors */
+            sensor->ht_sensor->get_temperature((float *)&TEMPERATURE_C);
+            sensor->ht_sensor->get_humidity((float *)&HUMIDITY);
+            sensor->pt_sensor->get_pressure((float *)&PRESSURE);
+        
+            TEMPERATURE_F = (TEMPERATURE_C * 1.8f) + 32.0f; //Convert the temperature from Celsius to Fahrenheit
+            TEMPERATURE_K = (TEMPERATURE_C + 273.15f);          //Convert the temperature from Celsius to Kelvin
+            pc.printf("Temperature:\t %.2f C / %.2f F / %.2f K\r\n", TEMPERATURE_C, TEMPERATURE_F, TEMPERATURE_K);
+            pc.printf("Humidity:\t %.2f%%\r\n", HUMIDITY);
+            pc.printf("Pressure:\t %.2f hPa\r\n", PRESSURE); 
+            pc.printf("\r\n");        
+            measurement_update = false;
+        }
+        __wfi();
+    }
+}
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