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/* ========================================================================= #
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2024 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================= */
#include "ph_outputs.h"
#include "pico/stdlib.h"
#include "hardware/gpio.h"
#include "hardware/structs/watchdog.h"
#include "ph_types.h"
#include "ph_tools.h"
#include "ph_proto.h"
#define _PS2_ENABLED_PIN 2
#define _PS2_SET_KBD_PIN 3
#define _PS2_SET_MOUSE_PIN 4
#define _BRIDGE_MODE_PIN 5
#define _USB_DISABLED_PIN 6
#define _USB_ENABLE_W98_PIN 7
#define _USB_SET_MOUSE_REL_PIN 8
#define _USB_SET_MOUSE_W98_PIN 9
u8 ph_g_outputs_active = 0;
u8 ph_g_outputs_avail = 0;
bool ph_g_is_bridge = false;
static int _read_outputs(void);
void ph_outputs_init(void) {
# define INIT_SWITCH(x_pin) { gpio_init(x_pin); gpio_set_dir(x_pin, GPIO_IN); gpio_pull_up(x_pin); }
INIT_SWITCH(_PS2_ENABLED_PIN);
INIT_SWITCH(_PS2_SET_KBD_PIN);
INIT_SWITCH(_PS2_SET_MOUSE_PIN);
INIT_SWITCH(_BRIDGE_MODE_PIN);
INIT_SWITCH(_USB_DISABLED_PIN);
INIT_SWITCH(_USB_ENABLE_W98_PIN);
INIT_SWITCH(_USB_SET_MOUSE_REL_PIN);
INIT_SWITCH(_USB_SET_MOUSE_W98_PIN);
# undef INIT_SWITCH
sleep_ms(10); // Нужен небольшой слип для активации pull-up
const bool o_ps2_enabled = !gpio_get(_PS2_ENABLED_PIN); // Note: all pins are pulled up!
const bool o_ps2_kbd = !gpio_get(_PS2_SET_KBD_PIN);
const bool o_ps2_mouse = !gpio_get(_PS2_SET_MOUSE_PIN);
ph_g_is_bridge = !gpio_get(_BRIDGE_MODE_PIN);
const bool o_usb_disabled = (ph_g_is_bridge || !gpio_get(_USB_DISABLED_PIN));
const bool o_usb_enabled_w98 = !gpio_get(_USB_ENABLE_W98_PIN);
const bool o_usb_mouse_rel = !gpio_get(_USB_SET_MOUSE_REL_PIN);
const bool o_usb_mouse_w98 = !gpio_get(_USB_SET_MOUSE_W98_PIN);
int outputs = _read_outputs();
if (outputs < 0) {
outputs = 0;
if (o_ps2_enabled && (o_ps2_kbd || o_usb_disabled)) {
outputs |= PH_PROTO_OUT1_KBD_PS2;
} else if (!o_usb_disabled) {
outputs |= PH_PROTO_OUT1_KBD_USB;
}
if (o_ps2_enabled && (o_ps2_mouse || o_usb_disabled)) {
outputs |= PH_PROTO_OUT1_MOUSE_PS2;
} else if (!o_usb_disabled) {
if (o_usb_enabled_w98 && o_usb_mouse_w98) {
outputs |= PH_PROTO_OUT1_MOUSE_USB_W98;
} else if (o_usb_mouse_rel) {
outputs |= PH_PROTO_OUT1_MOUSE_USB_REL;
} else {
outputs |= PH_PROTO_OUT1_MOUSE_USB_ABS;
}
}
ph_outputs_write(0xFF, outputs, true);
}
if (!o_usb_disabled) {
ph_g_outputs_avail |= PH_PROTO_OUT2_HAS_USB;
if (o_usb_enabled_w98) {
ph_g_outputs_avail |= PH_PROTO_OUT2_HAS_USB_W98;
}
}
if (o_ps2_enabled) {
ph_g_outputs_avail |= PH_PROTO_OUT2_HAS_PS2;
}
ph_g_outputs_active = outputs & 0xFF;
}
void ph_outputs_write(u8 mask, u8 outputs, bool force) {
int old = 0;
if (!force) {
old = _read_outputs();
if (old < 0) {
old = 0;
}
}
u8 data[4] = {0};
data[0] = PH_PROTO_MAGIC;
data[1] = (old & ~mask) | outputs;
ph_split16(ph_crc16(data, 2), &data[2], &data[3]);
const u32 s0 = ((u32)data[0] << 24) | ((u32)data[1] << 16) | ((u32)data[2] << 8) | (u32)data[3];
watchdog_hw->scratch[0] = s0;
}
static int _read_outputs(void) {
const u32 s0 = watchdog_hw->scratch[0];
const u8 data[4] = {
(s0 >> 24) & 0xFF,
(s0 >> 16) & 0xFF,
(s0 >> 8) & 0xFF,
s0 & 0xFF,
};
if (data[0] != PH_PROTO_MAGIC || ph_crc16(data, 2) != ph_merge8_u16(data[2], data[3])) {
return -1;
}
return data[1];
}
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