Diff: main.cpp

Revision:

0:d101e393d342

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Mar 24 08:13:54 2020 +0000
@@ -0,0 +1,52 @@
+#include "mbed.h"
+#include "LCD_DISCO_L476VG.h"
+
+#define DISPLAY_LENGTH 6
+
+DigitalOut led(LED1);
+LCD_DISCO_L476VG lcd;
+
+InterruptIn center(JOYSTICK_CENTER);
+InterruptIn left(JOYSTICK_LEFT);
+InterruptIn right(JOYSTICK_RIGHT);
+InterruptIn up(JOYSTICK_UP);
+InterruptIn down(JOYSTICK_DOWN);
+
+// Events are pointers to functions
+// Event loop takes events from queue and executes them
+EventQueue queue(64 * EVENTS_EVENT_SIZE);
+Thread thread;
+
+uint8_t message[DISPLAY_LENGTH] = {0};
+uint8_t msgIndex = 0;
+void lcdEventHandler(char c){
+    if(c == 'z'){
+        memset(message, 0, sizeof(message));
+        msgIndex = 0;
+    }else{
+        message[msgIndex] = c;
+        msgIndex = (msgIndex + 1) % DISPLAY_LENGTH;
+    }
+    lcd.Clear();
+    lcd.DisplayString(message);
+}
+
+int main(){
+    
+    // Event loop
+    thread.start(callback(&queue, &EventQueue::dispatch_forever));
+    
+    left.fall(queue.event(lcdEventHandler, 'e'));
+    up.fall(queue.event(lcdEventHandler, 'i'));
+    right.fall(queue.event(lcdEventHandler, 's'));
+    down.fall(queue.event(lcdEventHandler, 'l'));
+    center.fall(queue.event(lcdEventHandler, 'z'));
+    
+    left.mode(PullDown);
+    right.mode(PullDown);
+    up.mode(PullDown);
+    down.mode(PullDown);
+    
+    while(1) {
+    }
+}