uart.h File Reference

Headers for the driver for the UART. More...

#include "uart_cfg.h"

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Macros
#define	RXBUF_LENGTH   0x100 /* 256 Byte */
#define	TXBUF_LENGTH   0x300 /* 768 Byte */
#define	ACK_SYMBOL   0x06
#define	NAK_SYMBOL   0x15
#define	STX_SYMBOL   0x02
#define	ETX_SYMBOL   0x03
#define	UART_COM_RECEIVEBUFFER_LENGTH   100

Functions
void	UART_Init (void)
	UART_Init provides initialization of the UART module. More...
void	HAL_UART_CustomIRQHandler (UART_HandleTypeDef *huart)
	HAL_UART_CustomIRQHandler is responsible for handling all requests. More...
void	UART_vWrite (const uint8_t *source)
	UART_vWrite provides an interface to send data. More...
void	UART_vWrite_intbuf (const uint8_t *source, uint16_t length)
	UART_vWrite provides an interface to send data. More...
	__attribute__ ((weak)) void UART_IntTx(UART_HandleTypeDef *huart)

Variables
char	uart_com_receivedbyte [UART_COM_RECEIVEBUFFER_LENGTH]
uint8_t	uart_com_receive_slot

Detailed Description

Headers for the driver for the UART.

Copyright

© 2010 - 2021, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. All rights reserved.

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3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

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Author

foxBMS Team

Date

26.08.2015 (date of creation)

Module-prefix UART

Macro Definition Documentation

ACK_SYMBOL

#define ACK_SYMBOL   0x06

ETX_SYMBOL

#define ETX_SYMBOL   0x03

NAK_SYMBOL

#define NAK_SYMBOL   0x15

RXBUF_LENGTH

#define RXBUF_LENGTH   0x100 /* 256 Byte */

STX_SYMBOL

#define STX_SYMBOL   0x02

TXBUF_LENGTH

#define TXBUF_LENGTH   0x300 /* 768 Byte */

UART_COM_RECEIVEBUFFER_LENGTH

#define UART_COM_RECEIVEBUFFER_LENGTH   100

Function Documentation

__attribute__()

__attribute__

(

(weak)

)

HAL_UART_CustomIRQHandler()

void HAL_UART_CustomIRQHandler

(

UART_HandleTypeDef *

huart

)

HAL_UART_CustomIRQHandler is responsible for handling all requests.

This custom interrupt handler does all the handling for sending/receiving data, reset and error handling. In case of send/receive a subfunction is called which handles further processing.

UART_Init()

void UART_Init

(

void

)

UART_Init provides initialization of the UART module.

It needs to be called during startup, send/receive will only work after initialization is completed. This function configures parameters of the UART interface and enables the needed interrupts.

Available baudrate is dependent on Sysclock.

UART_vWrite()

void UART_vWrite

(

const uint8_t *

source

)

UART_vWrite provides an interface to send data.

---------------------— IMPORTANT!!!! -----------------------------— Make sure that this function is not interrupted by the operating system during its execution.

This function copies data from input buffer to transmit ringbuffer and processes this data in case it's not already busy transmitting data. The copying will stop as soon as an ASCII NULL character is detected. To avoid data corruption caused by simultaneous accesses some kind of critical section is used.

Returns

(type: uint8_t)

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UART_vWrite_intbuf()

void UART_vWrite_intbuf	(	const uint8_t *	source,
		uint16_t	length
	)

UART_vWrite provides an interface to send data.

---------------------— IMPORTANT!!!! -----------------------------— Make sure that this function is not interrupted by the operating system during its execution.

This function copies data from input buffer to transmit ringbuffer and processes this data in case it's not already busy transmitting data. To avoid data corruption caused by simultaneous accesses some kind of critical section is used. The difference between UART_vWrite(const uint8_t *source) and this function is, that this one does not stop at an ASCII_NULL character. Therefore writing of non ASCII characters is possible without having to worry that the data might represent an ASCII NULL character.

Returns

(type: uint8_t)

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Variable Documentation

uart_com_receive_slot

uint8_t uart_com_receive_slot

uart_com_receivedbyte

char uart_com_receivedbyte[UART_COM_RECEIVEBUFFER_LENGTH]