From 9392e95b0bc01df027b6bae2a49fc2dec0633315 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20Krac=C3=ADk?= <petrkr@petrkr.net>
Date: Thu, 12 Dec 2019 14:01:05 +0100
Subject: [PATCH] Initial commit, proof-of-concept on Amiga

---
 YAOCMouse.ino | 175 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 175 insertions(+)
 create mode 100644 YAOCMouse.ino

diff --git a/YAOCMouse.ino b/YAOCMouse.ino
new file mode 100644
index 0000000..9524c55
--- /dev/null
+++ b/YAOCMouse.ino
@@ -0,0 +1,175 @@
+// Drivers
+#include <SPI.h>
+
+// SPI USB
+#include <hidboot.h>
+
+
+class MouseRptParser : public MouseReportParser
+{
+  protected:
+    void OnMouseMove  (MOUSEINFO *mi);
+    void OnRightButtonUp  (MOUSEINFO *mi);
+    void OnRightButtonDown  (MOUSEINFO *mi);
+    void OnLeftButtonDown  (MOUSEINFO *mi);
+    void OnLeftButtonUp  (MOUSEINFO *mi);
+    void OnMiddleButtonDown  (MOUSEINFO *mi);
+};
+
+
+void MouseRptParser::OnRightButtonUp  (MOUSEINFO *mi)
+{
+
+};
+
+void MouseRptParser::OnRightButtonDown  (MOUSEINFO *mi)
+{
+
+};
+
+void MouseRptParser::OnLeftButtonDown  (MOUSEINFO *mi)
+{
+  digitalWrite(16, LOW);
+};
+
+void MouseRptParser::OnLeftButtonUp  (MOUSEINFO *mi)
+{
+  digitalWrite(16, HIGH);
+};
+
+void MouseRptParser::OnMiddleButtonDown  (MOUSEINFO *mi)
+{
+
+};
+
+byte mouseStates[4][2] = {
+  {0, 0},
+  {0, 1},
+  {1, 1},
+  {1, 0}
+};
+
+bool mouseYworking = false;
+int mouseYTableIndex = 0;
+void amigaYpulse(int8_t count) {
+  if (count == 0)
+    return;
+
+  if (mouseYworking)
+    return; 
+
+  mouseYworking = true;
+  byte mapped = map(abs(count), 0, 127, 1, 63);
+  for (byte i = 0; i < mapped; i++)
+  {
+    if (count < 0) {
+      mouseYTableIndex++;
+
+      if (mouseYTableIndex > 3) {
+        mouseYTableIndex = 0;
+      }
+    }
+    else {
+      mouseYTableIndex--;
+
+      if (mouseYTableIndex == -1) {
+        mouseYTableIndex = 3;
+      }
+    }
+
+    digitalWrite(13, mouseStates[mouseYTableIndex][0]);
+    digitalWrite(14, mouseStates[mouseYTableIndex][1]);
+    delayMicroseconds(70);
+  }
+
+  mouseYworking = false;
+}
+
+int mouseXTableIndex = 0;
+void amigaXpulse(int8_t count) {
+  if (count == 0)
+    return;
+
+  for (byte i = 0; i < map(abs(count), 0, 127, 1, 63); i++)
+  {
+    if (count < 0) {
+      mouseXTableIndex++;
+
+      if (mouseXTableIndex > 3) {
+        mouseXTableIndex = 0;
+      }
+    }
+    else {
+      mouseXTableIndex--;
+
+      if (mouseXTableIndex == -1) {
+        mouseXTableIndex = 3;
+      }
+    }
+
+    digitalWrite(15, mouseStates[mouseXTableIndex][0]);
+    digitalWrite(12, mouseStates[mouseXTableIndex][1]);
+    delayMicroseconds(70);
+  }
+}
+
+void MouseRptParser::OnMouseMove(MOUSEINFO *mi)
+{
+  amigaYpulse(mi->dY);
+  amigaXpulse(mi->dX);
+};
+
+
+// This is only for single USB device (without HUB)
+// In this example we support keyboard or mouse
+USB     Usb;
+HIDBoot<USB_HID_PROTOCOL_MOUSE>       HidMouse(&Usb);
+
+MouseRptParser PrsMouse;
+
+void setupAmigaMouse() {
+  pinMode(14, OUTPUT); //Y
+  pinMode(13, OUTPUT); //QY
+
+  pinMode(15, OUTPUT); //X
+  pinMode(12, OUTPUT); //QX
+
+  pinMode(16, OUTPUT); //Button L
+
+  digitalWrite(14, LOW);
+  digitalWrite(13, LOW);
+
+  digitalWrite(15, LOW);
+  digitalWrite(12, LOW);
+
+  digitalWrite(16, HIGH);
+}
+
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(115200);
+  Serial.println("INIT");
+
+  Serial.print("USB init...");
+  SPI.begin(32, 35, 33, 5);
+
+  if (Usb.Init() == -1) {
+    Serial.println("WARN: Usb init failed.");
+  }
+  else {
+    Serial.println(" DONE");
+  }
+
+  setupAmigaMouse();
+
+  HidMouse.SetReportParser(0, &PrsMouse);
+
+  Serial.print("Interupts init...");
+
+  Serial.println("Ready to rock and roll...");
+}
+
+void loop() {
+  Usb.Task();
+}