STM32的USB 應用-3 hw_config.c

 這次的專案是模擬USB Keyboard 所以主是針對USB的資料發送,而在應用-1文中有說到,
 資料發送是由下列三個函數所組成,
UserToPMABufferCopy(InBuffer, GetEPTxAddr(ENDP1), 64);
SetEPTxCount(ENDP1, 64);                    
SetEPTxValid(ENDP1);

而在 JoyStickMouse這個專案,則只需二個函數

UserToPMABufferCopy(InBuffer, GetEPTxAddr(ENDP1), 8);

SetEPTxValid(ENDP1);
 
而JoyStickMouse這個專案的資料發送則是在hw_config.c 中 的Joystick_Send這函數中,
 來看看原始程式碼如下:
   
void Joystick_Send(u8 Keys)
{
  u8 Buffer[8] = {0, 0, 0, 0, 0, 0, 0, 0};
  u8 i;
  i="2";
  
 

  //對各個按鍵進行處理。注意,由於這裡的搖杆5個按鍵
  //不可能同時按下,所以返回的普通鍵數量不會超過6個。
  //如果你的鍵盤同時按下的普通鍵能夠超過6個的話,就需要做
  //點特殊處理了,將後面6位元組全部設置為0xFF,表示按鍵無法識別。


  if(Keys&KEY_UP)
  {
   Buffer[i]=0x52; //Keyboard UpArrow
   i++;
  }
  if(Keys&KEY_DOWN)
  {
   Buffer[i]=0x51; //Keyboard DownArrow
   i++;
  }
  if(Keys&KEY_LEFT)
  {
   Buffer[i]=0x50; //Keyboard LeftArrow
   i++;
  }
  if(Keys&KEY_RIGHT)
  {
   Buffer[i]=0x4F; //Keyboard RightArrow
   i++;
  }
  if(Keys&KEY_2)
  {
   Buffer[i]=0x39; //Keyboard Caps Lock
   i++;
  }
  if(Keys&KEY_3)
  {
   Buffer[i]=0x53; //Keypad Num Lock and Clear
   i++;
  }
  if(Keys&KEY_SEL)
  {
   Buffer[i]=0x28; //Keyboard Return (ENTER)
  }
  /*copy mouse position info in ENDP1 Tx Packet Memory Area*/
  UserToPMABufferCopy(Buffer, GetEPTxAddr(ENDP1), 8);
  /* enable endpoint for transmission */
  SetEPTxValid(ENDP1);




不個各位是否發現對應 Keyboard (ENTER)是用0x28,不是應該是0x13嗎?其實這個就要說到Keyboard用的是不是ASCII Code,而USB HID Keyboard的鍵盤對應碼如下:


USB HID Keyboard
 0x00 Reserved (no event indicated)
 0x01 Keyboard ErrorRollOver
 0x02 Keyboard POSTFail
 0x03 Keyboard ErrorUndefined
 0x04 Keyboard a and A
 0x05 Keyboard b and B
 0x06 Keyboard c and C
 0x07 Keyboard d and D
 0x08 Keyboard e and E
 0x09 Keyboard f and F
 0x0A Keyboard g and G
 0x0B Keyboard h and H
 0x0C Keyboard i and I
 0x0D Keyboard j and J
 0x0E Keyboard k and K
 0x0F Keyboard l and L
 0x10 Keyboard m and M
 0x11 Keyboard n and N
 0x12 Keyboard o and O
 0x13 Keyboard p and P
 0x14 Keyboard q and Q
 0x15 Keyboard r and R
 0x16 Keyboard s and S
 0x17 Keyboard t and T
 0x18 Keyboard u and U
 0x19 Keyboard v and V
 0x1A Keyboard w and W
 0x1B Keyboard x and X
 0x1C Keyboard y and Y
 0x1D Keyboard z and Z
 0x1E Keyboard 1 and !
 0x1F Keyboard 2 and @
 0x20 Keyboard 3 and #
 0x21 Keyboard 4 and $
 0x22 Keyboard 5 and %
 0x23 Keyboard 6 and ^
 0x24 Keyboard 7 and &
 0x25 Keyboard 8 and *
 0x26 Keyboard 9 and (
 0x27 Keyboard 0 and )
 0x28 Keyboard Return (ENTER)
 0x29 Keyboard ESCAPE
 0x2A Keyboard DELETE (Backspace)
 0x2B Keyboard Tab
 0x2C Keyboard Spacebar
 0x2D Keyboard - and (underscore)
 0x2E Keyboard = and +
 0x2F Keyboard [ and {
 0x30 Keyboard ] and }
 0x31 Keyboard \ and |
 0x32 Keyboard Non-US # and ~
 0x33 Keyboard ; and :
 0x34 Keyboard ' and "
 0x35 Keyboard Grave Accent and Tilde
 0x36 Keyboard, and <
 0x37 Keyboard . and >
 0x38 Keyboard / and ?
 0x39 Keyboard Caps Lock
 0x3A Keyboard F1
 0x3B Keyboard F2
 0x3C Keyboard F3
 0x3D Keyboard F4
 0x3E Keyboard F5
 0x3F Keyboard F6
 0x40 Keyboard F7
 0x41 Keyboard F8
 0x42 Keyboard F9
 0x43 Keyboard F10
 0x44 Keyboard F11
 0x45 Keyboard F12
 0x46 Keyboard PrintScreen
 0x47 Keyboard Scroll Lock
 0x48 Keyboard Pause
 0x49 Keyboard Insert
 0x4A Keyboard Home
 0x4B Keyboard PageUp
 0x4C Keyboard Delete Forward
 0x4D Keyboard End
 0x4E Keyboard PageDown
 0x4F Keyboard RightArrow
 0x50 Keyboard LeftArrow
 0x51 Keyboard DownArrow
 0x52 Keyboard UpArrow
 0x53 Keypad Num Lock and Clear
 0x54 Keypad /
 0x55 Keypad *
 0x56 Keypad -
 0x57 Keypad +
 0x58 Keypad ENTER
 0x59 Keypad 1 and End
 0x5A Keypad 2 and Down Arrow
 0x5B Keypad 3 and PageDn
 0x5C Keypad 4 and Left Arrow
 0x5D Keypad 5
 0x5E Keypad 6 and Right Arrow
 0x5F Keypad 7 and Home
 0x60 Keypad 8 and Up Arrow
 0x61 Keypad 9 and PageUp
 0x62 Keypad 0 and Insert
 0x63 Keypad . and Delete
 0x64 Keyboard Non-US \ and |
 0x65 Keyboard Application
 0x66 Keyboard Power
 0x67 Keypad =
 0x68 Keyboard F13
 0x69 Keyboard F14
 0x6A Keyboard F15
 0x6B Keyboard F16
 0x6C Keyboard F17
 0x6D Keyboard F18
 0x6E Keyboard F19
 0x6F Keyboard F20
 0x70 Keyboard F21
 0x71 Keyboard F22
 0x72 Keyboard F23
 0x73 Keyboard F24
 0x74 Keyboard Execute
 0x75 Keyboard Help
 0x76 Keyboard Menu
 0x77 Keyboard Select
 0x78 Keyboard Stop
 0x79 Keyboard Again
 0x7A Keyboard Undo
 0x7B Keyboard Cut
 0x7C Keyboard Copy
 0x7D Keyboard Paste
 0x7E Keyboard Find
 0x7F Keyboard Mute
 0x80 Keyboard Volume Up
 0x81 Keyboard Volume Down
 0x82 Keyboard Locking Caps Lock
 0x83 Keyboard Locking Num Lock
 0x84 Keyboard Locking Scroll Lock
 0x85 Keypad Comma
 0x86 Keypad Equal Sign
 0x87 Keyboard International1
 0x88 Keyboard International2
 0x89 Keyboard International3
 0x8A Keyboard International4
 0x8B Keyboard International5
 0x8C Keyboard International6
 0x8D Keyboard International7
 0x8E Keyboard International8
 0x8F Keyboard International9
 0x90 Keyboard LANG1
 0x91 Keyboard LANG2
 0x92 Keyboard LANG3
 0x93 Keyboard LANG4
 0x94 Keyboard LANG5
 0x95 Keyboard LANG6
 0x96 Keyboard LANG7
 0x97 Keyboard LANG8
 0x98 Keyboard LANG9
 0x99 Keyboard Alternate Erase
 0x9A Keyboard SysReq/Attention
 0x9B Keyboard Cancel
 0x9C Keyboard Clear
 0x9D Keyboard Prior
 0x9E Keyboard Return
 0x9F Keyboard Separator
 0xA0 Keyboard Out
 0xA1 Keyboard Oper
 0xA2 Keyboard Clear/Again
 0xA3 Keyboard CrSel/Props
 0xA4 Keyboard ExSel
 0xE0 Keyboard LeftControl
 0xE1 Keyboard LeftShift
 0xE2 Keyboard LeftAlt
 0xE3 Keyboard Left GUI
 0xE4 Keyboard RightControl
 0xE5 Keyboard RightShift
 0xE6 Keyboard RightAlt
 0xE7 Keyboard Right GUI

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