mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 17:20:30 +08:00
76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/*****************************************************************************
|
|
# #
|
|
# KVMD - The main PiKVM daemon. #
|
|
# #
|
|
# Copyright (C) 2018-2023 Maxim Devaev <mdevaev@gmail.com> #
|
|
# #
|
|
# 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_com_uart.h"
|
|
|
|
#include "pico/stdlib.h"
|
|
#include "hardware/gpio.h"
|
|
#include "hardware/uart.h"
|
|
|
|
#include "ph_types.h"
|
|
|
|
|
|
#define _BUS uart1
|
|
#define _SPEED 115200
|
|
#define _RX_PIN 21
|
|
#define _TX_PIN 20
|
|
#define _TIMEOUT_US 100000
|
|
|
|
|
|
static u8 _buf[8] = {0};
|
|
static u8 _index = 0;
|
|
static u64 _last_ts = 0;
|
|
|
|
static void (*_data_cb)(const u8 *) = NULL;
|
|
static void (*_timeout_cb)(void) = NULL;
|
|
|
|
|
|
void ph_com_uart_init(void (*data_cb)(const u8 *), void (*timeout_cb)(void)) {
|
|
_data_cb = data_cb;
|
|
_timeout_cb = timeout_cb;
|
|
uart_init(_BUS, _SPEED);
|
|
gpio_set_function(_RX_PIN, GPIO_FUNC_UART);
|
|
gpio_set_function(_TX_PIN, GPIO_FUNC_UART);
|
|
}
|
|
|
|
void ph_com_uart_task(void) {
|
|
if (uart_is_readable(_BUS)) {
|
|
_buf[_index] = (u8)uart_getc(_BUS);
|
|
if (_index == 7) {
|
|
_data_cb(_buf);
|
|
_index = 0;
|
|
} else {
|
|
_last_ts = time_us_64();
|
|
++_index;
|
|
}
|
|
} else if (_index > 0) {
|
|
if (_last_ts + _TIMEOUT_US < time_us_64()) {
|
|
_timeout_cb();
|
|
_index = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ph_com_uart_write(const u8 *data) {
|
|
uart_write_blocking(_BUS, data, 8);
|
|
}
|