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Recognise cursor keys and map them to 'l', 'r', 'u', 'd'.

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This commit is contained in:
Martin Whitaker 2022-01-30 15:12:42 +00:00
parent 151870cc0b
commit 4589c7dad4
1 changed files with 17 additions and 4 deletions
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21
system/keyboard.c
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@ -181,10 +181,10 @@ static const char usb_hid_keymap[] = {
/* 0x4c */ 0, // Page Up /* 0x4c */ 0, // Page Up
/* 0x4d */ 0, // Delete /* 0x4d */ 0, // Delete
/* 0x4e */ 0, // Page Down /* 0x4e */ 0, // Page Down
/* 0x4f */ 0, // Cursor Right /* 0x4f */ 'r', // Cursor Right
/* 0x50 */ 0, // Cursor Left /* 0x50 */ 'l', // Cursor Left
/* 0x51 */ 0, // Cursor Down /* 0x51 */ 'd', // Cursor Down
/* 0x52 */ 0, // Cursor Up /* 0x52 */ 'u', // Cursor Up
/* 0x53 */ 0, // Number Lock /* 0x53 */ 0, // Number Lock
/* 0x54 */ '/', // keypad /* 0x54 */ '/', // keypad
/* 0x55 */ '*', // keypad /* 0x55 */ '*', // keypad
@ -231,13 +231,26 @@ char get_key(void)
} }
} }
static bool escaped = false;
if (keyboard_types & KT_LEGACY) { if (keyboard_types & KT_LEGACY) {
uint8_t c = inb(0x64); uint8_t c = inb(0x64);
if (c & 0x01) { if (c & 0x01) {
c = inb(0x60); c = inb(0x60);
if (escaped) {
escaped = false;
switch (c) {
case 0x48 : return 'u';
case 0x4b : return 'l';
case 0x4d : return 'r';
case 0x50 : return 'd';
default : return 0;
}
}
if (c < sizeof(legacy_keymap)) { if (c < sizeof(legacy_keymap)) {
return legacy_keymap[c]; return legacy_keymap[c];
} }
escaped = (c == 0xe0);
// Ignore keys we don't recognise and key up codes // Ignore keys we don't recognise and key up codes
} }
} }