キーボードでゲームが出来ても、実用的ではないので文字入力の仕様について考えてみます。
#define BUTTON_UP 0x0001 #define BUTTON_DOWN 0x0002 #define BUTTON_LEFT 0x0004 #define BUTTON_RIGHT 0x0008 #define BUTTON_A 0x0040 #define BUTTON_B 0x0010 #define BUTTON_C 0x0020 #define BUTTON_START 0x0080
入力がない状態を0x00と考えると、
S A C B R L D U 0 0 0 0 0 0 0 0
スタートボタンのみ押されてる状態が0x80これをENTERと解釈します。
S A C B R L D U 1 0 0 0 0 0 0 0
スタートボタンが押されていない状態で、上下左右はカーソルキーと解釈します。同様に0x00~0x7Fの範囲で、 AはDEL
S A C B R L D U 0 1 0 0 0 0 0 0
BはBACKSPACE
S A C B R L D U 0 0 0 1 0 0 0 0
CはSPACEと解釈します。
S A C B R L D U 0 0 1 0 0 0 0 0
スタートボタンとの同時押し、すなわち0x81~0xFFの範囲を0x7FでANDした値をASCIIコードとします。
#include <hidboot.h>
#include <usbhub.h>
// Satisfy the IDE, which needs to see the include statment in the ino too.
#ifdef dobogusinclude
#include <spi4teensy3.h>
#endif
#include <SPI.h>
class KbdRptParser : public KeyboardReportParser
{
void PrintKey(uint8_t mod, uint8_t key);
protected:
void OnControlKeysChanged(uint8_t before, uint8_t after);
void OnKeyDown (uint8_t mod, uint8_t key);
void OnKeyUp (uint8_t mod, uint8_t key);
void OnKeyPressed(uint8_t key);
};
void KbdRptParser::PrintKey(uint8_t m, uint8_t key)
{
MODIFIERKEYS mod;
*((uint8_t*)&mod) = m;
Serial.print((mod.bmLeftCtrl == 1) ? "C" : " ");
Serial.print((mod.bmLeftShift == 1) ? "S" : " ");
Serial.print((mod.bmLeftAlt == 1) ? "A" : " ");
Serial.print((mod.bmLeftGUI == 1) ? "G" : " ");
Serial.print(" >");
PrintHex<uint8_t>(key, 0x80);
Serial.print("< ");
Serial.print((mod.bmRightCtrl == 1) ? "C" : " ");
Serial.print((mod.bmRightShift == 1) ? "S" : " ");
Serial.print((mod.bmRightAlt == 1) ? "A" : " ");
Serial.println((mod.bmRightGUI == 1) ? "G" : " ");
};
void KbdRptParser::OnKeyDown(uint8_t mod, uint8_t key)
{
Serial.print("DN ");
PrintKey(mod, key);
uint8_t c = OemToAscii(mod, key);
if (c)
OnKeyPressed(c);
if (key==0x52) pinMode(4, OUTPUT); // UP
if (key==0x51) pinMode(5, OUTPUT); // DOWN
if (key==0x50) pinMode(6, OUTPUT); // LEFT
if (key==0x4F) pinMode(7, OUTPUT); // RIGHT
if (key>=0x04 && key<=0x1d) { // A-Z
if ((key-3) & 0x01) pinMode(4, OUTPUT); // bit 0
if ((key-3) & 0x02) pinMode(5, OUTPUT); // bit 1
if ((key-3) & 0x04) pinMode(6, OUTPUT); // bit 2
if ((key-3) & 0x08) pinMode(7, OUTPUT); // bit 3
if ((key-3) & 0x10) pinMode(14, OUTPUT); // bit 4
pinMode(15, OUTPUT); // bit 5
pinMode(8, OUTPUT); // bit 6
pinMode(16, OUTPUT); // bit 7
}
if (key==0x4c) pinMode(8, OUTPUT); // DEL
if (key==0x2a) pinMode(14, OUTPUT); // BS
if (key==0x2c) pinMode(15, OUTPUT); // SPACE
if (key==0x28) pinMode(16, OUTPUT); // ENTER
}
void KbdRptParser::OnControlKeysChanged(uint8_t before, uint8_t after) {
MODIFIERKEYS beforeMod;
*((uint8_t*)&beforeMod) = before;
MODIFIERKEYS afterMod;
*((uint8_t*)&afterMod) = after;
if (beforeMod.bmLeftCtrl != afterMod.bmLeftCtrl) {
Serial.println("LeftCtrl changed");
}
if (beforeMod.bmLeftShift != afterMod.bmLeftShift) {
Serial.println("LeftShift changed");
}
if (beforeMod.bmLeftAlt != afterMod.bmLeftAlt) {
Serial.println("LeftAlt changed");
}
if (beforeMod.bmLeftGUI != afterMod.bmLeftGUI) {
Serial.println("LeftGUI changed");
}
if (beforeMod.bmRightCtrl != afterMod.bmRightCtrl) {
Serial.println("RightCtrl changed");
}
if (beforeMod.bmRightShift != afterMod.bmRightShift) {
Serial.println("RightShift changed");
}
if (beforeMod.bmRightAlt != afterMod.bmRightAlt) {
Serial.println("RightAlt changed");
}
if (beforeMod.bmRightGUI != afterMod.bmRightGUI) {
Serial.println("RightGUI changed");
}
}
void KbdRptParser::OnKeyUp(uint8_t mod, uint8_t key)
{
Serial.print("UP ");
PrintKey(mod, key);
if (key==0x52) pinMode(4, INPUT); // UP
if (key==0x51) pinMode(5, INPUT); // DOWN
if (key==0x50) pinMode(6, INPUT); // LEFT
if (key==0x4F) pinMode(7, INPUT); // RIGHT
if (key>=0x04 && key<=0x1d) { // A-Z
pinMode(4, INPUT); // bit 0
pinMode(5, INPUT); // bit 1
pinMode(6, INPUT); // bit 2
pinMode(7, INPUT); // bit 3
pinMode(8, INPUT); // bit 4
pinMode(14, INPUT); // bit 5
pinMode(15, INPUT); // bit 6
pinMode(16, INPUT); // bit 7
}
if (key==0x4c) pinMode(8, INPUT); // DEL
if (key==0x2a) pinMode(14, INPUT); // BS
if (key==0x2c) pinMode(15, INPUT); // SPACE
if (key==0x28) pinMode(16, INPUT); // ENTER
}
void KbdRptParser::OnKeyPressed(uint8_t key)
{
Serial.print("ASCII: ");
Serial.println((char)key);
};
USB Usb;
//USBHub Hub(&Usb);
HIDBoot<USB_HID_PROTOCOL_KEYBOARD> HidKeyboard(&Usb);
KbdRptParser Prs;
void setup()
{
Serial.begin( 115200 );
#if !defined(__MIPSEL__)
while (!Serial); // Wait for serial port to connect - used on Leonardo, Teensy and other boards with built-in USB CDC serial connection
#endif
Serial.println("Start");
digitalWrite(4,LOW);
digitalWrite(5,LOW);
digitalWrite(6,LOW);
digitalWrite(7,LOW);
digitalWrite(8,LOW);
digitalWrite(14,LOW);
digitalWrite(15,LOW);
digitalWrite(16,LOW);
pinMode(4, INPUT);
pinMode(5, INPUT);
pinMode(6, INPUT);
pinMode(7, INPUT);
pinMode(8, INPUT);
pinMode(14, INPUT);
pinMode(15, INPUT);
pinMode(16, INPUT);
if (Usb.Init() == -1)
Serial.println("OSC did not start.");
delay( 200 );
HidKeyboard.SetReportParser(0, &Prs);
}
void loop()
{
Usb.Task();
}
