first commit

Makefile

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+# Using Arduino Make file. <https://github.com/sudar/Arduino-Makefile>
+
+BOARD_TAG    = leonardo
+MONITOR_PORT = /dev/ttyACM0
+ARDUINO_DIR = /home/dan/projects/arduino-1.8.9
+ARDUINO_LIBS = HID Mouse
+include /home/dan/projects/avr/Arduino-Makefile/Arduino.mk
+

joystick.ino

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+#include <Mouse.h>
+#define DELAY 5
+
+const int sw_pin = 8;
+const int vrx_pin = A0;
+const int vry_pin = A1;
+
+const int base_x = 512;
+const int base_y = 519;
+
+const int max_x = 1023;
+const int max_y = 1023;
+
+const int rng = 14;
+
+void setup() {                
+  pinMode(sw_pin, INPUT_PULLUP);
+  Mouse.begin();
+}
+
+int prev_clicked = 0;
+int get_clicked() {
+  int signal = !digitalRead(sw_pin);
+  int ret = (signal && signal != prev_clicked) ? 1 : 0;
+  prev_clicked = signal;
+  return ret;
+}
+
+int read_direction(int analog_pin, int base, int max, int rng) {
+  int signal = analogRead(analog_pin);
+  if (signal > base) {
+    return map (signal, base, max, 0, rng);
+  } else if (signal < base) {
+    return - map (signal, base, 0, 1, rng);
+  } else { return 0; }
+}
+
+void loop() {
+  int click = get_clicked();
+  if (click) {
+    Mouse.click();
+  }
+  int dirx = read_direction(vrx_pin, base_x, max_x, rng);
+  int diry = read_direction(vry_pin, base_y, max_y, rng);
+  if (diry != 0) {
+    Mouse.move(0, diry, 0);
+  }
+  if (dirx != 0) {
+    Mouse.move(dirx, 0, 0);
+  }
+  
+  delay(DELAY);
+}