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https://github.com/eddyem/stm32samples.git
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56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
/*
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* This file is part of the usbcangpio project.
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* Copyright 2026 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdint.h>
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#include "gpioproto.h"
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// DMA linear buffers for Rx/Tx
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#define DMARXBUFSZ 192
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#define DMATXBUFSZ 192
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// incoming ring buffer - only if there's a lot of data in DMA RX buffer
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#define RXRBSZ 384
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#define USART_MIN_SPEED 1024
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#define USART_MAX_SPEED 1000000
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#define USART_DEFAULT_SPEED 9600
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typedef struct{
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uint32_t speed; // baudrate
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uint8_t idx : 1; // Usart idx (0/1 for USART1/USART2)
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uint8_t RXen : 1; // enable rx
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uint8_t TXen : 1; // enable tx
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uint8_t textproto : 1; // match '\n' and force output by lines (if there's enough place in buffers and monitor == 1)
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uint8_t monitor : 1; // async output by incoming (over '\n', IDLE or buffer full)
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} usartconf_t;
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int usart_config(usartconf_t *config);
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int chkusartconf(usartconf_t *c);
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int usart_start();
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void usart_stop();
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int get_curusartconf(usartconf_t *c);
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void get_defusartconf(usartconf_t *c);
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int usart_process(uint8_t *buf, int len);
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int usart_receive(uint8_t *buf, int len);
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errcodes_t usart_send(const uint8_t *data, int len);
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