#include "keyboard.h" #include // 功能键标志变量 static bool shift_l = 0, shift_r = 0, ctrl_l = 0, ctrl_r = 0, alt_l = 0, alt_r = 0; static bool gui_l = 0, gui_r = 0, apps = 0, insert = 0, home = 0, pgup = 0, del = 0, end = 0, pgdn = 0, arrow_u = 0, arrow_l = 0, arrow_d = 0, arrow_r = 0; static bool kp_forward_slash = 0, kp_en = 0; // 键盘扫描码有三种： // 0xE1开头的PauseBreak键 // 0xE0开头的功能键 // 1byte的普通按键 // pause break键的扫描码，没错，它就是这么长 unsigned char pause_break_scan_code[] = {0xe1, 0x1d, 0x45, 0xe1, 0x9d, 0xc5}; // 第一套键盘扫描码 及其对应的字符 uint32_t keycode_map_normal[NUM_SCAN_CODES * MAP_COLS] = { /*scan-code unShift Shift */ /*--------------------------------------------------------------*/ /*0x00*/ 0, 0, /*0x01*/ 0, 0, // ESC /*0x02*/ '1', '!', /*0x03*/ '2', '@', /*0x04*/ '3', '#', /*0x05*/ '4', '$', /*0x06*/ '5', '%', /*0x07*/ '6', '^', /*0x08*/ '7', '&', /*0x09*/ '8', '*', /*0x0a*/ '9', '(', /*0x0b*/ '0', ')', /*0x0c*/ '-', '_', /*0x0d*/ '=', '+', /*0x0e*/ '\b', '\b', // BACKSPACE /*0x0f*/ '\t', '\t', // TAB /*0x10*/ 'q', 'Q', /*0x11*/ 'w', 'W', /*0x12*/ 'e', 'E', /*0x13*/ 'r', 'R', /*0x14*/ 't', 'T', /*0x15*/ 'y', 'Y', /*0x16*/ 'u', 'U', /*0x17*/ 'i', 'I', /*0x18*/ 'o', 'O', /*0x19*/ 'p', 'P', /*0x1a*/ '[', '{', /*0x1b*/ ']', '}', /*0x1c*/ '\n', '\n', // ENTER /*0x1d*/ 0x1d, 0x1d, // CTRL Left /*0x1e*/ 'a', 'A', /*0x1f*/ 's', 'S', /*0x20*/ 'd', 'D', /*0x21*/ 'f', 'F', /*0x22*/ 'g', 'G', /*0x23*/ 'h', 'H', /*0x24*/ 'j', 'J', /*0x25*/ 'k', 'K', /*0x26*/ 'l', 'L', /*0x27*/ ';', ':', /*0x28*/ '\'', '"', /*0x29*/ '`', '~', /*0x2a*/ 0x2a, 0x2a, // SHIFT Left /*0x2b*/ '\\', '|', /*0x2c*/ 'z', 'Z', /*0x2d*/ 'x', 'X', /*0x2e*/ 'c', 'C', /*0x2f*/ 'v', 'V', /*0x30*/ 'b', 'B', /*0x31*/ 'n', 'N', /*0x32*/ 'm', 'M', /*0x33*/ ',', '<', /*0x34*/ '.', '>', /*0x35*/ '/', '?', /*0x36*/ 0x36, 0x36, // SHIFT Right /*0x37*/ '*', '*', /*0x38*/ 0x38, 0x38, // ALT Left /*0x39*/ ' ', ' ', /*0x3a*/ 0, 0, // CAPS LOCK /*0x3b*/ 0, 0, // F1 /*0x3c*/ 0, 0, // F2 /*0x3d*/ 0, 0, // F3 /*0x3e*/ 0, 0, // F4 /*0x3f*/ 0, 0, // F5 /*0x40*/ 0, 0, // F6 /*0x41*/ 0, 0, // F7 /*0x42*/ 0, 0, // F8 /*0x43*/ 0, 0, // F9 /*0x44*/ 0, 0, // F10 /*0x45*/ 0, 0, // NUM LOCK /*0x46*/ 0, 0, // SCROLL LOCK /*0x47*/ '7', 0, /*PAD HONE*/ /*0x48*/ '8', 0, /*PAD UP*/ /*0x49*/ '9', 0, /*PAD PAGEUP*/ /*0x4a*/ '-', 0, /*PAD MINUS*/ /*0x4b*/ '4', 0, /*PAD LEFT*/ /*0x4c*/ '5', 0, /*PAD MID*/ /*0x4d*/ '6', 0, /*PAD RIGHT*/ /*0x4e*/ '+', 0, /*PAD PLUS*/ /*0x4f*/ '1', 0, /*PAD END*/ /*0x50*/ '2', 0, /*PAD DOWN*/ /*0x51*/ '3', 0, /*PAD PAGEDOWN*/ /*0x52*/ '0', 0, /*PAD INS*/ /*0x53*/ '.', 0, /*PAD DOT*/ /*0x54*/ 0, 0, /*0x55*/ 0, 0, /*0x56*/ 0, 0, /*0x57*/ 0, 0, // F11 /*0x58*/ 0, 0, // F12 /*0x59*/ 0, 0, /*0x5a*/ 0, 0, /*0x5b*/ 0, 0, /*0x5c*/ 0, 0, /*0x5d*/ 0, 0, /*0x5e*/ 0, 0, /*0x5f*/ 0, 0, /*0x60*/ 0, 0, /*0x61*/ 0, 0, /*0x62*/ 0, 0, /*0x63*/ 0, 0, /*0x64*/ 0, 0, /*0x65*/ 0, 0, /*0x66*/ 0, 0, /*0x67*/ 0, 0, /*0x68*/ 0, 0, /*0x69*/ 0, 0, /*0x6a*/ 0, 0, /*0x6b*/ 0, 0, /*0x6c*/ 0, 0, /*0x6d*/ 0, 0, /*0x6e*/ 0, 0, /*0x6f*/ 0, 0, /*0x70*/ 0, 0, /*0x71*/ 0, 0, /*0x72*/ 0, 0, /*0x73*/ 0, 0, /*0x74*/ 0, 0, /*0x75*/ 0, 0, /*0x76*/ 0, 0, /*0x77*/ 0, 0, /*0x78*/ 0, 0, /*0x79*/ 0, 0, /*0x7a*/ 0, 0, /*0x7b*/ 0, 0, /*0x7c*/ 0, 0, /*0x7d*/ 0, 0, /*0x7e*/ 0, 0, /*0x7f*/ 0, 0, }; /** * @brief 解析键盘扫描码 * */ int keyboard_analyze_keycode(int fd) { bool flag_make = false; int c = keyboard_get_scancode(fd); // 循环队列为空 if (c == -1) return 0; unsigned char scancode = (unsigned char)c; int key = 0; if (scancode == 0xE1) // Pause Break { key = PAUSE_BREAK; // 清除缓冲区中剩下的扫描码 for (int i = 1; i < 6; ++i) if (keyboard_get_scancode(fd) != pause_break_scan_code[i]) { key = 0; break; } } else if (scancode == 0xE0) // 功能键, 有多个扫描码 { // 获取下一个扫描码 scancode = keyboard_get_scancode(fd); switch (scancode) { case 0x2a: // print screen 按键被按下 if (keyboard_get_scancode(fd) == 0xe0) if (keyboard_get_scancode(fd) == 0x37) { key = PRINT_SCREEN; flag_make = true; } break; case 0xb7: // print screen 按键被松开 if (keyboard_get_scancode(fd) == 0xe0) if (keyboard_get_scancode(fd) == 0xaa) { key = PRINT_SCREEN; flag_make = false; } break; case 0x1d: // 按下右边的ctrl ctrl_r = true; key = OTHER_KEY; break; case 0x9d: // 松开右边的ctrl ctrl_r = false; key = OTHER_KEY; break; case 0x38: // 按下右边的alt alt_r = true; key = OTHER_KEY; break; case 0xb8: // 松开右边的alt alt_r = false; key = OTHER_KEY; break; case 0x5b: gui_l = true; key = OTHER_KEY; break; case 0xdb: gui_l = false; key = OTHER_KEY; break; case 0x5c: gui_r = true; key = OTHER_KEY; break; case 0xdc: gui_r = false; key = OTHER_KEY; break; case 0x5d: apps = true; key = OTHER_KEY; break; case 0xdd: apps = false; key = OTHER_KEY; break; case 0x52: insert = true; key = OTHER_KEY; break; case 0xd2: insert = false; key = OTHER_KEY; break; case 0x47: home = true; key = OTHER_KEY; break; case 0xc7: home = false; key = OTHER_KEY; break; case 0x49: pgup = true; key = OTHER_KEY; break; case 0xc9: pgup = false; key = OTHER_KEY; break; case 0x53: del = true; key = OTHER_KEY; break; case 0xd3: del = false; key = OTHER_KEY; break; case 0x4f: end = true; key = OTHER_KEY; break; case 0xcf: end = false; key = OTHER_KEY; break; case 0x51: pgdn = true; key = OTHER_KEY; break; case 0xd1: pgdn = false; key = OTHER_KEY; break; case 0x48: arrow_u = true; key = OTHER_KEY; break; case 0xc8: arrow_u = false; key = OTHER_KEY; return 0xc8; break; case 0x4b: arrow_l = true; key = OTHER_KEY; break; case 0xcb: arrow_l = false; key = OTHER_KEY; break; case 0x50: arrow_d = true; key = OTHER_KEY; return 0x50; break; case 0xd0: arrow_d = false; key = OTHER_KEY; break; case 0x4d: arrow_r = true; key = OTHER_KEY; break; case 0xcd: arrow_r = false; key = OTHER_KEY; break; case 0x35: // 数字小键盘的 / 符号 kp_forward_slash = true; key = OTHER_KEY; break; case 0xb5: kp_forward_slash = false; key = OTHER_KEY; break; case 0x1c: kp_en = true; key = OTHER_KEY; break; case 0x9c: kp_en = false; key = OTHER_KEY; break; default: key = OTHER_KEY; break; } } if (key == 0) // 属于第三类扫描码 { // 判断按键是被按下还是抬起 flag_make = ((scancode & FLAG_BREAK) ? 0 : 1); // 计算扫描码位于码表的第几行 uint32_t *key_row = &keycode_map_normal[(scancode & 0x7f) * MAP_COLS]; unsigned char col = 0; // shift被按下 if (shift_l || shift_r) col = 1; key = key_row[col]; switch (scancode & 0x7f) { case 0x2a: shift_l = flag_make; key = 0; break; case 0x36: shift_r = flag_make; key = 0; break; case 0x1d: ctrl_l = flag_make; key = 0; break; case 0x38: ctrl_r = flag_make; key = 0; break; default: if (!flag_make) key = 0; break; } if (key) return key; } return 0; } /** * @brief 从键盘设备文件中获取键盘扫描码 * */ int keyboard_get_scancode(int fd) { unsigned int ret = 0; read(fd, &ret, 1); return ret; }