mirror of
https://git.k-space.ee/arti/vt1200.git
synced 2026-10-31 12:05:05 +02:00
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.
104 lines
1.9 KiB
C
104 lines
1.9 KiB
C
#include <zephyr/kernel.h>
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#include <zephyr/drivers/pwm.h>
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#include <zephyr/logging/log.h>
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#include "beeper.h"
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LOG_MODULE_REGISTER(beeper, CONFIG_LOG_DEFAULT_LEVEL);
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K_MUTEX_DEFINE(beeper_mutex);
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static const struct pwm_dt_spec pwm_beeper0 =
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PWM_DT_SPEC_GET(DT_ALIAS(pwm_beeper0));
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static int keyclick_volume = -1;
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static int bell_volume = -1;
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int
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beeper_init(void)
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{
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int ret = pwm_is_ready_dt(&pwm_beeper0);
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if (!ret) {
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printk("Error: Beeper PWM device %s is not ready\n",
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pwm_beeper0.dev->name);
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}
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return ret;
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}
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void
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beeper_set_bell_volume(int volume)
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{
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bell_volume = volume;
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}
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void
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beeper_set_keyclick_volume(int volume)
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{
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keyclick_volume = volume;
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}
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static void
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beeper_on(int volume)
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{
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const uint32_t pulse = (pwm_beeper0.period / 2U) * (8 - volume) / 8;
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k_mutex_lock(&beeper_mutex, K_FOREVER);
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int ret = pwm_set_dt(&pwm_beeper0, pwm_beeper0.period, pulse);
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k_mutex_unlock(&beeper_mutex);
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if (ret) {
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LOG_ERR("Error %d: failed to set pulse width", ret);
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}
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}
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static void
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beeper_off(void)
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{
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k_mutex_lock(&beeper_mutex, K_FOREVER);
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int ret = pwm_set_dt(&pwm_beeper0, pwm_beeper0.period, 0);
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k_mutex_unlock(&beeper_mutex);
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if (ret) {
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LOG_ERR("Error %d: failed to set pulse width", ret);
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}
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}
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void beeper_off_work_handler(struct k_work *work)
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{
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ARG_UNUSED(work);
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beeper_off();
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}
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K_WORK_DEFINE(beeper_off_work, beeper_off_work_handler);
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void beeper_off_timer_handler(struct k_timer *dummy)
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{
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ARG_UNUSED(dummy);
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k_work_submit(&beeper_off_work);
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}
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K_TIMER_DEFINE(beeper_off_timer, beeper_off_timer_handler, NULL);
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void
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beeper_sound_keyclick(void)
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{
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if (keyclick_volume < 0) {
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return;
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}
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beeper_on(keyclick_volume);
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k_timer_start(&beeper_off_timer, K_MSEC(2), K_FOREVER);
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}
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void
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beeper_sound_bell(void)
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{
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if (bell_volume < 0) {
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return;
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}
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beeper_on(bell_volume);
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k_timer_start(&beeper_off_timer, K_MSEC(125), K_FOREVER);
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}
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