kopia lustrzana https://github.com/amedes/pico_tnc
128 wiersze
3.4 KiB
C
128 wiersze
3.4 KiB
C
/*
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Copyright (c) 2021, JN1DFF
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of the <organization> nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include "pico/stdlib.h"
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#include "hardware/uart.h"
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#include "pico/util/queue.h"
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#include "tnc.h"
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#include "tty.h"
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#include "gps.h"
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#define UART_BAUDRATE 115200
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#define UART_QUEUE_LEN 1024
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#define GPS_ENABLE 1
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#define GPS_BAUDRATE 9600
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static queue_t uart_queue;
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void serial_init(void)
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{
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queue_init(&uart_queue, sizeof(uint8_t), UART_QUEUE_LEN);
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assert(uart_queue != NULL);
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uint baud = uart_init(uart0, UART_BAUDRATE);
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//printf("UART0 baud rate = %u\n", baud);
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uart_set_fifo_enabled(uart0, true);
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gpio_set_function(0, GPIO_FUNC_UART);
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gpio_set_function(1, GPIO_FUNC_UART);
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#ifdef GPS_ENABLE
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// GPS
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baud = uart_init(uart1, GPS_BAUDRATE);
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//printf("UART1 baud rate = %u\n", baud);
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uart_set_fifo_enabled(uart0, true);
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gpio_set_function(4, GPIO_FUNC_UART);
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gpio_set_function(5, GPIO_FUNC_UART);
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#endif
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}
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void serial_write(uint8_t const *data, int len)
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{
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int free = UART_QUEUE_LEN - queue_get_level(&uart_queue);
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for (int i = 0; i < len && i < free; i++) {
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if (!queue_try_add(&uart_queue, &data[i])) break;
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}
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}
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void serial_write_char(uint8_t ch)
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{
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queue_try_add(&uart_queue, &ch);
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}
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void serial_output(void)
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{
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if (queue_is_empty(&uart_queue)) return;
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while (uart_is_writable(uart0)) {
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uint8_t ch;
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if (!queue_try_remove(&uart_queue, &ch)) break;
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uart_putc_raw(uart0, ch);
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}
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}
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void serial_input(void)
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{
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#ifdef GPS_ENABLE
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while (uart_is_readable(uart1)) {
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int ch = uart_getc(uart1);
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gps_input(ch);
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}
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#endif
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while (uart_is_readable(uart0)) {
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int ch = uart_getc(uart0);
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tty_input(&tty[TTY_UART0], ch);
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}
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#if 0
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switch (ch) {
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case 0x08:
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case 0x7f:
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uart_puts(uart0, "\b \b");
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break;
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case 0x0d:
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uart_puts(uart0, "\r\n");
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break;
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default:
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uart_putc_raw(uart0, ch);
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}
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#endif
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}
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