//按鍵掃描碼定義，當前只包括了從a到z一共26個字母的掃描碼，根據需要可以增加，比如增加阿拉伯數字0-9的掃描碼
#define _A_M  0X1c                     //以下后綴是M的對應掃描碼中的通碼，后綴為B的對應斷碼
#define _A_B  0Xf0,0x1c
#define _B_M  0X32
#define _B_B  0Xf0,0X32
#define _C_M  0X21
#define _C_B  0Xf0,0x21
#define _D_M  0X23
#define _D_B  0XF0,0X23
#define _E_M  0X24
#define _E_B  0XF0,0X24

#define _F_M  0X2B
#define _F_B  0XF0,0X2B
#define _G_M  0X34
#define _G_B  0XF0,0X34

#define _H_M  0X33
#define _H_B  0XF0,0X33
#define _I_M  0X43
#define _I_B  0XF0,0X43
#define _J_M  0X3B
#define _J_B  0XF0,0X3B

#define _K_M  0X42
#define _K_B  0XF0,0X42
#define _L_M  0X4B
#define _L_B  0XF0,0X4B
#define _M_M  0X3A
#define _M_B  0XF0,0X3A
#define _N_M  0X31
#define _N_B  0XF0,0X31
#define _O_M  0X44
#define _O_B  0XF0,0X44
#define _P_M  0X4D
#define _P_B  0XF0,0X4D
#define _Q_M  0X15
#define _Q_B  0XF0,0X15
#define _R_M  0X2D
#define _R_B  0XF0,0X2D
#define _S_M  0X1B
#define _S_B  0XF0,0X1B
#define _T_M  0X2C
#define _T_B  0XF0,0X2C
#define _U_M  0X3C                 
#define _U_B  0XF0,0X3C
#define _V_M  0X2A
#define _V_B  0XF0,0X2A
#define _W_M  0X1D
#define _W_B  0XF0,0X1D

#define _X_M  0X22
#define _X_B  0XF0,0X22
#define _Y_M  0X35
#define _Y_B  0XF0,0X35
#define _Z_M  0X1A
#define _Z_B  0XF0,0X1A
#define _NULL_M 0
#define _NULL_B 0
//掃描碼存儲格式，在單片機程序存儲區
unsigned char code
_A_[]={_A_M,0,_A_B,0},          //各數組掃描碼通碼和斷碼之間用0隔開，在發送掃描碼時如果當前數組元素為0則表示發送完成（通碼或者斷碼）
_B_[]={_B_M,0,_B_B,0},
_C_[]={_C_M,0,_C_B,0},
_D_[]={_D_M,0,_D_B,0},
_E_[]={_E_M,0,_E_B,0},
_F_[]={_F_M,0,_F_B,0},
_G_[]={_G_M,0,_G_B,0},
_H_[]={_H_M,0,_H_B,0},
_I_[]={_I_M,0,_I_B,0},
_J_[]={_J_M,0,_J_B,0},
_K_[]={_K_M,0,_K_B,0},
_L_[]={_L_M,0,_L_B,0},
_M_[]={_M_M,0,_M_B,0},
_N_[]={_N_M,0,_N_B,0},
_O_[]={_O_M,0,_O_B,0},
_P_[]={_P_M,0,_P_B,0},
_Q_[]={_Q_M,0,_Q_B,0},
_R_[]={_R_M,0,_R_B,0},
_S_[]={_S_M,0,_S_B,0},
_T_[]={_T_M,0,_T_B,0},
_U_[]={_U_M,0,_U_B,0},
_V_[]={_V_M,0,_V_B,0},
_W_[]={_W_M,0,_W_B,0},
_X_[]={_X_M,0,_X_B,0},
_Y_[]={_Y_M,0,_Y_B,0},
_Z_[]={_Z_M,0,_Z_B,0},
_NULL_[]={_NULL_M,0,_NULL_B,0};

/*按鍵掃描碼存儲區地址數組，通過修改排列順序可改變按鍵定義。比如當前第一行第一列對應字母a，第一行第二列對應
字母b，第一行第三列對應字母c，如果將kk[]改為kk[]={_C_,_B_,_A_,..............},則第一行第一列將對應字母c，以此類推
在對鍵盤進行掃描時通過掃描的行和列可以計算出當前掃描到的按鍵的位置，每一位置對應按鍵掃描碼存儲區地址數組的一個數組，
*/
typedef unsigned char code *tt;
tt code kk[]={                 
_A_,
_B_,
_C_,
_D_,
_E_,
_F_,
_G_,
_H_,
_I_,
_J_,
_K_,
_L_,
_M_,
_N_,
_O_,
_P_,
_Q_,
_R_,
_S_,
_T_,
_U_,
_V_,
_W_,
_X_,
_Y_,
_Z_,
_NULL_};