131 lines
2.5 KiB
C
131 lines
2.5 KiB
C
#include <kernel/chroma.h>
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/************************
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*** Team Kitty, 2020 ***
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*** Chroma ***
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***********************/
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/* This file contains (mostly unused) implementations of a full PS/2 keyboard driver.
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*
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* It provides provisions for full 2-way communication, as well as auxiliary key commands.
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* //TODO: Media keys?
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*
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* Once this driver is to a workable state, I would like to start adding a proper keyboard buffer,
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* which will integrate with a window system.
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*
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*/
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char keys[128] = {
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0, 27,
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'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', '\b',
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'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
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0,
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'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '#',
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0,
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'\\', 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
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0,
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'*', 0,
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' ', 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0,
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0,
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0,
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0,
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0,
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0,
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'-',
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0,
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0,
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0,
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'+',
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0,
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0,
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0,
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0,
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0,
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0, 0, 0,
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0,
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0,
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0,
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};
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void KbdEcho() {
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if(!KbdFlags.EchoCount) {
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if(!KbdFlags.Echo) {
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Send8042(0xEE);
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}
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} else {
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KbdFlags.EchoCount = 0;
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KbdFlags.Echo = 0;
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}
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}
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void UpdateKeyboard(uint8_t msg) {
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InputBuffer[0] = msg;
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switch(msg) {
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case 0x0:
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KbdFlags.Error = 1;
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//ResendBuffer();
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break;
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case 0xAA:
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KbdFlags.SelfTest = 1;
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break;
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case 0xEE:
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KbdFlags.Echo = 0;
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KbdFlags.EchoCount = 2;
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KbdEcho();
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break;
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case 0xFA:
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KbdFlags.ACK = 1;
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//ProgressBuffer();
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break;
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case 0xFC:
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case 0xFD:
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KbdFlags.SelfTest = 0;
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KbdFlags.Error = 1;
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//RestartKbd();
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break;
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case 0xFE:
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//ResendBuffer();
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break;
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case 0xFF:
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KbdFlags.Error = 1;
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//ResendBuffer();
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break;
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default:
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break;
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}
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if(msg & 0x80) {
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} else {
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SerialPrintf("Key pressed: [\\%c]\r\n", keys[msg]);
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WriteChar(keys[msg]);
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}
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}
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void Send8042(size_t info) {
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for(size_t i = 0; i < 8; i++) {
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unsigned char chr = (unsigned char) info;
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if(chr != 0) {
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WritePort(0x60, chr, 1);
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WaitFor8042();
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}
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}
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}
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void WaitFor8042() {
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bool full = true;
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while(full) {
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full = ReadPort(0x64, 1) & 1;
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}
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} |