Diff: main.cpp

Revision:

0:ca4ecd424807

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jan 15 09:51:57 2021 +0000
@@ -0,0 +1,38 @@
+/* Sikil
+ */
+
+#include "mbed.h"
+#include "platform/mbed_thread.h"
+
+int main()
+{
+    DigitalOut led(LED1);
+    Serial computer(USBTX, USBRX);
+    
+    computer.baud(9600);
+    computer.printf("Press 'u' to turn LED brightness up, 'd' to turn it down\n");
+    
+    float brightness{1.f};
+    static constexpr int duty_cycle_ms{10};
+
+    while (true) {
+        if (computer.readable()) {
+            char letter = computer.getc();
+        
+            if((letter == 'u') && (brightness < 1.f)) {
+                brightness += 0.1f;
+                led = brightness;
+            }
+            
+            if((letter == 'd') && (brightness > 0.f)) {
+                brightness -= 0.1f;
+                led = brightness;
+            }
+        }
+
+        led = 1;
+        thread_sleep_for(brightness * duty_cycle_ms);
+        led = 0;
+        thread_sleep_for((1.f - brightness) * duty_cycle_ms);
+    } 
+}