mirror of
https://github.com/paparazzi/paparazzi.git
synced 2026-06-04 13:55:40 +08:00
Gautier Hattenberger
159 lines
4.1 KiB
C
159 lines
4.1 KiB
C
/*
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* Copyright (C) 2010 The Paparazzi Team
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*
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* This file is part of paparazzi.
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*
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* paparazzi 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 2, or (at your option)
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* any later version.
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*
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* paparazzi 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 paparazzi; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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/** \file mcu_periph/uart.h
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* \brief arch independent UART (Universal Asynchronous Receiver/Transmitter) API
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*
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*/
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#ifndef MCU_PERIPH_UART_H
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#define MCU_PERIPH_UART_H
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#include "mcu_periph/uart_arch.h"
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#include "pprzlink/pprzlink_device.h"
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#include "std.h"
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#ifndef UART_RX_BUFFER_SIZE
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#ifdef STM32F4 //the F4 has enough memory
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#define UART_RX_BUFFER_SIZE 256
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#else
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#define UART_RX_BUFFER_SIZE 128
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#endif
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#endif
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#ifndef UART_TX_BUFFER_SIZE
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#ifdef STM32F4 //the F4 has enough memory, and the PX4 bootloader needs more then 128
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#define UART_TX_BUFFER_SIZE 256
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#else
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#define UART_TX_BUFFER_SIZE 128
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#endif
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#endif
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#define UART_DEV_NAME_SIZE 16
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/*
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* UART Baud rate defines in arch/x/mcu_periph/uart_arch.h
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*/
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#define UBITS_7 7
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#define UBITS_8 8
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#define USTOP_1 1
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#define USTOP_2 2
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#define UPARITY_NO 0
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#define UPARITY_ODD 1
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#define UPARITY_EVEN 2
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/**
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* UART peripheral
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*/
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struct uart_periph {
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/** Receive buffer */
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uint8_t rx_buf[UART_RX_BUFFER_SIZE];
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uint16_t rx_insert_idx;
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uint16_t rx_extract_idx;
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/** Transmit buffer */
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uint8_t tx_buf[UART_TX_BUFFER_SIZE];
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uint16_t tx_insert_idx;
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uint16_t tx_extract_idx;
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volatile uint8_t tx_running;
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/** UART Register */
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void *reg_addr;
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/** UART Baudrate */
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int baudrate;
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/** UART Dev (linux) */
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char dev[UART_DEV_NAME_SIZE];
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volatile uint16_t ore; ///< overrun error counter
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volatile uint16_t ne_err; ///< noise error counter
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volatile uint16_t fe_err; ///< framing error counter
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/** Generic device interface */
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struct link_device device;
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};
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extern void uart_periph_init(struct uart_periph *p);
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extern void uart_periph_set_baudrate(struct uart_periph *p, uint32_t baud);
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extern void uart_periph_set_bits_stop_parity(struct uart_periph *p, uint8_t bits, uint8_t stop, uint8_t parity);
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extern void uart_periph_set_mode(struct uart_periph *p, bool tx_enabled, bool rx_enabled, bool hw_flow_control);
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extern void uart_put_byte(struct uart_periph *p, long fd, uint8_t data);
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extern void uart_put_buffer(struct uart_periph *p, long fd, const uint8_t *data, uint16_t len);
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extern bool uart_check_free_space(struct uart_periph *p, long *fd, uint16_t len);
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extern void uart_send_message(struct uart_periph *p, long fd);
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extern uint8_t uart_getch(struct uart_periph *p);
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/**
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* Check UART for available chars in receive buffer.
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* @return number of chars in the buffer
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*/
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extern uint16_t uart_char_available(struct uart_periph *p);
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extern void uart_arch_init(void);
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#if USE_UART0
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extern struct uart_periph uart0;
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extern void uart0_init(void);
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#endif // USE_UART0
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#if USE_UART1
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extern struct uart_periph uart1;
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extern void uart1_init(void);
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#endif // USE_UART1
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#if USE_UART2
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extern struct uart_periph uart2;
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extern void uart2_init(void);
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#endif // USE_UART2
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#if USE_UART3
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extern struct uart_periph uart3;
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extern void uart3_init(void);
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#endif // USE_UART3
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#if USE_UART4
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extern struct uart_periph uart4;
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extern void uart4_init(void);
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#endif // USE_UART4
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#if USE_UART5
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extern struct uart_periph uart5;
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extern void uart5_init(void);
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#endif // USE_UART5
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#if USE_UART6
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extern struct uart_periph uart6;
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extern void uart6_init(void);
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#endif // USE_UART6
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#if USE_UART7
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extern struct uart_periph uart7;
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extern void uart7_init(void);
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#endif // USE_UART7
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#if USE_UART8
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extern struct uart_periph uart8;
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extern void uart8_init(void);
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#endif // USE_UART8
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#endif /* MCU_PERIPH_UART_H */
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