| 54 | set_leds(); |
| 55 | } |
| 56 | PUBLIC rt_bool_t keyboard_read(rt_uint32_t *pkey) |
| 57 | { |
| 58 | t_8 scan_code; |
| 59 | t_bool make; /* TRUE : make */ |
| 60 | /* FALSE: break */ |
| 61 | t_32 key = 0; |
| 62 | t_32* keyrow; |
| 63 | |
| 64 | if(kb_in.count > 0){ |
| 65 | code_with_E0 = FALSE; |
| 66 | scan_code = get_byte_from_kb_buf(); |
| 67 | |
| 68 | /* start scan */ |
| 69 | if (scan_code == 0xE1) { |
| 70 | int i; |
| 71 | static const t_8 pausebreak_scan_code[] = {0xE1, 0x1D, 0x45, 0xE1, 0x9D, 0xC5}; |
| 72 | t_bool is_pausebreak = TRUE; |
| 73 | for(i=1;i<6;i++){ |
| 74 | if (get_byte_from_kb_buf() != pausebreak_scan_code[i]) { |
| 75 | is_pausebreak = FALSE; |
| 76 | break; |
| 77 | } |
| 78 | } |
| 79 | if (is_pausebreak) { |
| 80 | key = PAUSEBREAK; |
| 81 | } |
| 82 | } |
| 83 | else if (scan_code == 0xE0) { |
| 84 | code_with_E0 = TRUE; |
| 85 | scan_code = get_byte_from_kb_buf(); |
| 86 | |
| 87 | /* PrintScreen pressed */ |
| 88 | if (scan_code == 0x2A) { |
| 89 | code_with_E0 = FALSE; |
| 90 | if ((scan_code = get_byte_from_kb_buf()) == 0xE0) { |
| 91 | code_with_E0 = TRUE; |
| 92 | if ((scan_code = get_byte_from_kb_buf()) == 0x37) { |
| 93 | key = PRINTSCREEN; |
| 94 | make = TRUE; |
| 95 | } |
| 96 | } |
| 97 | } |
| 98 | /* PrintScreen released */ |
| 99 | else if (scan_code == 0xB7) { |
| 100 | code_with_E0 = FALSE; |
| 101 | if ((scan_code = get_byte_from_kb_buf()) == 0xE0) { |
| 102 | code_with_E0 = TRUE; |
| 103 | if ((scan_code = get_byte_from_kb_buf()) == 0xAA) { |
| 104 | key = PRINTSCREEN; |
| 105 | make = FALSE; |
| 106 | } |
| 107 | } |
| 108 | } |
| 109 | } /* if is not PrintScreen, scan_code is the one after 0xE0 */ |
| 110 | if ((key != PAUSEBREAK) && (key != PRINTSCREEN)) { |
| 111 | /* is Make Code or Break Code */ |
| 112 | make = (scan_code & FLAG_BREAK ? FALSE : TRUE); |
| 113 |
no test coverage detected