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#include <Arduino.h>
#include <HID-Project.h>
#include "inline.h"
#include "keymap.h"
#define CMD_SERIAL Serial1
#define CMD_SERIAL_SPEED 115200
#define CMD_MOUSE_LEFT 0b10000000
#define CMD_MOUSE_LEFT_STATE 0b00001000
#define CMD_MOUSE_RIGHT 0b01000000
#define CMD_MOUSE_RIGHT_STATE 0b00000100
#define REPORT_INTERVAL 100
// -----------------------------------------------------------------------------
INLINE void readNoop() {
for (int count = 0; count < 4; ++count) {
CMD_SERIAL.read();
}
}
INLINE void cmdResetHid() { // 0 bytes
readNoop();
BootKeyboard.releaseAll();
SingleAbsoluteMouse.releaseAll();
}
INLINE void cmdKeyEvent() { // 2 bytes
KeyboardKeycode code = keymap((uint8_t)CMD_SERIAL.read());
uint8_t state = CMD_SERIAL.read();
CMD_SERIAL.read(); // unused
CMD_SERIAL.read(); // unused
if (code != KEY_ERROR_UNDEFINED) {
if (state) {
BootKeyboard.press(code);
} else {
BootKeyboard.release(code);
}
}
}
INLINE void cmdMouseMoveEvent() { // 4 bytes
int x = (int)CMD_SERIAL.read() << 8;
x |= (int)CMD_SERIAL.read();
int y = (int)CMD_SERIAL.read() << 8;
y |= (int)CMD_SERIAL.read();
SingleAbsoluteMouse.moveTo(x, y);
}
INLINE void cmdMouseButtonEvent() { // 1 byte
uint8_t state = CMD_SERIAL.read();
CMD_SERIAL.read(); // unused
CMD_SERIAL.read(); // unused
CMD_SERIAL.read(); // unused
if (state & CMD_MOUSE_LEFT) {
if (state & CMD_MOUSE_LEFT_STATE) {
SingleAbsoluteMouse.press(MOUSE_LEFT);
} else {
SingleAbsoluteMouse.release(MOUSE_LEFT);
}
}
if (state & CMD_MOUSE_RIGHT) {
if (state & CMD_MOUSE_RIGHT_STATE) {
SingleAbsoluteMouse.press(MOUSE_RIGHT);
} else {
SingleAbsoluteMouse.release(MOUSE_RIGHT);
}
}
}
INLINE void cmdMouseWheelEvent() { // 2 bytes
CMD_SERIAL.read(); // delta_x is not supported by hid-project now
signed char delta_y = CMD_SERIAL.read();
CMD_SERIAL.read(); // unused
CMD_SERIAL.read(); // unused
SingleAbsoluteMouse.move(0, 0, delta_y);
}
// -----------------------------------------------------------------------------
void setup() {
CMD_SERIAL.begin(CMD_SERIAL_SPEED);
BootKeyboard.begin();
SingleAbsoluteMouse.begin();
}
void loop() {
static unsigned long last_report = 0;
bool cmd_processed = false;
if (CMD_SERIAL.available() >= 5) {
switch ((uint8_t)CMD_SERIAL.read()) {
case 0: cmdResetHid(); break;
case 1: cmdKeyEvent(); break;
case 2: cmdMouseMoveEvent(); break;
case 3: cmdMouseButtonEvent(); break;
case 4: cmdMouseWheelEvent(); break;
default: readNoop(); break;
}
cmd_processed = true;
}
unsigned long now = millis();
if (
cmd_processed
|| (now >= last_report && now - last_report >= REPORT_INTERVAL)
|| (now < last_report && ((unsigned long) -1) - last_report + now >= REPORT_INTERVAL)
) {
CMD_SERIAL.write(0);
last_report = now;
}
}
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