forked from arti/vt1200
SDD
3fd1e13b2e
Distils public docs into reference/keyboard-mouse/PROTOCOL.md for the level-1 Keyboard (27) / Mouse (26) device tests: - keyboard: 4800 8N1 RS-423, self-test via FD -> 01 00 00 00 (errors 3D/3E) - mouse: 4800 8O1 RS-232, self-test via 'T' -> 4-byte report (errors 3D/3E, >=0x20 fatal) - separate ports: DUART2 A=keyboard, B=mouse (NOT daisy-chained) MAME already has an LK201 device (src/mame/dec/lk201.cpp/.h) but no DEC mouse.
122 lines
2.7 KiB
C
122 lines
2.7 KiB
C
#include <zephyr/kernel.h>
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#include "metronome.h"
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#include "vtbt.h"
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#include "lk201.h"
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#include "uart.h"
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#include "beeper.h"
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static bool auto_repeat_enabled = true;
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static int repeating_keycode = 0;
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/* The k_uptime_get() timestamp when the next metronome should be sent. */
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static int repeating_next = 0;
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/* Set when a keycode has been transmitted while handling another event, so the
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* keycode of a repeating key needs to be resent before resuming metronomes. */
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static bool resend = false;
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void
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metronome_resend(void)
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{
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resend = true;
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}
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void
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metronome_auto_repeat_enable(void)
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{
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auto_repeat_enabled = true;
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}
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void
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metronome_auto_repeat_disable(void)
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{
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auto_repeat_enabled = false;
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}
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void
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metronome_event(const sys_dlist_t *keys_down, const struct event *event)
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{
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ARG_UNUSED(event);
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/* Get the most auto-repeat-capable down key. */
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struct key_down *repeating = NULL;
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struct division *division = NULL;
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struct key_down *cn;
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SYS_DLIST_FOR_EACH_CONTAINER((sys_dlist_t *)keys_down, cn, node) {
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division = lk201_division_get_from_keycode(cn->keycode);
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if (division == NULL) {
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continue;
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} else if (cn->inhibit_auto_repeat) {
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continue;
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} else if (division->mode == MODE_AUTO_REPEAT) {
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repeating = cn;
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break;
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}
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}
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if (repeating == NULL) {
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repeating_keycode = 0;
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resend = false;
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return;
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}
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int64_t now = k_uptime_get();
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if (repeating_keycode != repeating->keycode) {
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/* We're already repeating a different key. */
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struct repeat_buffer *repeat_buffer = lk201_repeat_buffer_get(
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division->buffer);
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int timeout = repeat_buffer->timeout;
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if ((now - repeating->time) > timeout) {
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int interval = repeat_buffer->interval;
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if (repeating->repeating && repeating_keycode != 0) {
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if (auto_repeat_enabled) {
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int sent = uart_write_byte(
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repeating->keycode);
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if (sent > 0) {
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beeper_sound_keyclick();
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}
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}
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} else {
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if (auto_repeat_enabled) {
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int sent = uart_write_byte(
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SPECIAL_METRONOME);
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if (sent > 0) {
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beeper_sound_keyclick();
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}
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}
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}
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repeating_keycode = repeating->keycode;
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repeating_next = now + interval;
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resend = false;
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repeating->repeating = true;
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}
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return;
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}
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if ((repeating_next - now) < 0) {
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struct repeat_buffer *repeat_buffer = lk201_repeat_buffer_get(
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division->buffer);
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int interval = repeat_buffer->interval;
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repeating_next = now + interval;
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if (resend) {
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resend = false;
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if (auto_repeat_enabled) {
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int sent = uart_write_byte(repeating->keycode);
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if (sent > 0) {
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beeper_sound_keyclick();
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}
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}
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} else {
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if (auto_repeat_enabled) {
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int sent = uart_write_byte(SPECIAL_METRONOME);
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if (sent > 0) {
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beeper_sound_keyclick();
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}
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}
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}
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}
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}
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