uart_pipe.h File Reference

Pipe UART driver header file. More...

#include <stdlib.h>

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Typedefs
typedef uint8_t *(*	uart_pipe_recv_cb) (uint8_t *buf, size_t *off)
	Received data callback.

Functions
void	uart_pipe_register (uint8_t *buf, size_t len, uart_pipe_recv_cb cb)
	Register UART application.
int	uart_pipe_send (const uint8_t *data, int len)
	Send data over UART.

Detailed Description

Pipe UART driver header file.

A pipe UART driver that allows applications to handle all aspects of received protocol data.

Typedef Documentation

uart_pipe_recv_cb

typedef uint8_t *(* uart_pipe_recv_cb) (uint8_t *buf, size_t *off)

Received data callback.

This function is called when new data is received on UART. The off parameter can be used to alter offset at which received data is stored. Typically, when the complete data is received and a new buffer is provided off should be set to 0.

Parameters

buf	Buffer with received data.
off	Data offset on next received and accumulated data length.

Returns

Buffer to be used on next receive.

Function Documentation

uart_pipe_register()

void uart_pipe_register	(	uint8_t *	buf,
		size_t	len,
		uart_pipe_recv_cb	cb
	)

Register UART application.

This function is used to register new UART application.

Parameters

buf	Initial buffer for received data.
len	Size of buffer.
cb	Callback to be called on data reception.

uart_pipe_send()

int uart_pipe_send	(	const uint8_t *	data,
		int	len
	)

Send data over UART.

This function is used to send data over UART.

Parameters

data	Buffer with data to be send.
len	Size of data.

Returns

0 on success or negative error