Diff: main.cpp

Revision:

1:ee571cefc13b

Parent:

0:fac2ffd6f143

Child:

2:bc854fc3d2a3

--- a/main.cpp	Tue Aug 25 11:00:34 2020 +0000
+++ b/main.cpp	Thu Aug 27 10:14:27 2020 +0000
@@ -3,18 +3,21 @@
 
 int main()
 {
-    // Initialise the digital pin LED1 as an output
-    DigitalOut led(LED1);
+    // Initialise the digital pin USER_BUTTON (the blue button) as an input
+    DigitalIn button(USER_BUTTON);
+    
+    // Initialise the serial connection with the PC
+    Serial pc(USBTX, USBRX);
 
     // Loop forever...
     while (true) {
-        // Switch the LED on
-        led = true;
-        // Wait for 200ms
-        thread_sleep_for(200);
-        // Switch the LED off
-        led = false;
-        // Wait for 300ms
-        thread_sleep_for(300);
+        // Is the button being pressed?
+        if (button) {
+            pc.printf("Button is up\n");
+        } else {
+            pc.printf("Button is down\n");
+        }    
+        // Wait for 500ms
+        thread_sleep_for(500);
     }
 }