working software

software/software.ino

@@ -0,0 +1,55 @@
+#include "Keyboard.h"
+#include "HID.h"
+
+#if F_CPU == 16000000
+#error should be running at 8MHz
+#endif
+
+void setup() {
+    pinMode(A0, INPUT_PULLUP);
+    Keyboard.begin();
+    Serial.begin(9600);
+    Serial.setTimeout(50);
+}
+
+void goto_bootloader() {
+    cli();
+    UDCON |= (1<<DETACH);
+    USBCON |= (1<<USBE);
+
+    TIMSK0 = 0;
+
+    MCUCR |= (1<<IVCE);
+    MCUCR |= (1<<IVSEL);
+    sei();
+    asm("jmp 0x7000");
+}
+    
+
+void check_blcmd() {
+    if (Serial.available()) {
+        String in = Serial.readStringUntil("\n");
+        if (in.equals("bootloader\n")) {
+            goto_bootloader();
+        }
+    }
+}
+
+void loop() {
+    while (digitalRead(A0) == HIGH) {
+        check_blcmd();
+        delay(100);
+    }
+
+    Keyboard.press(KEY_F14);
+    Keyboard.releaseAll();
+
+    while (digitalRead(A0) != HIGH) {
+        check_blcmd();
+        delay(100);
+    }
+
+    Keyboard.press(KEY_F15);
+    Keyboard.releaseAll();
+
+}