72 lines
1.1 KiB
C++
72 lines
1.1 KiB
C++
#include "Keyboard.h"
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#include "HID.h"
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#if F_CPU == 16000000
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#error should be running at 8MHz
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#endif
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#define PIN A0
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void goto_bootloader() {
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cli();
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UDCON |= (1<<DETACH);
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USBCON |= (1<<USBE);
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TIMSK0 = 0;
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MCUCR |= (1<<IVCE);
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MCUCR |= (1<<IVSEL);
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sei();
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asm("jmp 0x7000");
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}
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void check_blcmd() {
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if (Serial.available()) {
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String in = Serial.readStringUntil("\n");
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if (in.equals("bootloader\n")) {
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goto_bootloader();
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}
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}
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}
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void toggle() {}
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void turned_on() {
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Keyboard.press(KEY_F15);
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Keyboard.releaseAll();
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}
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void turned_off() {
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Keyboard.press(KEY_F14);
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Keyboard.releaseAll();
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}
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void setup() {
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pinMode(PIN, INPUT_PULLUP);
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Keyboard.begin();
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Serial.begin(9600);
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Serial.setTimeout(50);
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}
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void loop() {
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static bool last_state = 0;
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bool current_state = digitalRead(PIN);
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if (last_state != current_state) {
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toggle();
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if (current_state)
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turned_on();
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else
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turned_off();
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last_state = current_state;
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}
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check_blcmd();
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delay(100);
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}
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