APBUART

This group contains the APBUART interfaces. More...

Modules
	UART FIFO debug register (FIFO)
	This group contains register bit definitions.
	UART control register (CTRL)
	This group contains register bit definitions.
	UART data register (DATA)
	This group contains register bit definitions.
	UART scaler reload register (SCALER)
	This group contains register bit definitions.
	UART status register (STATUS)
	This group contains register bit definitions.

Files
file	apbuart-regs.h
	This header file defines the APBUART register block interface.
file	apbuart.h
	This header file defines the APBUART interface.
file	apbuart_polled.c
	This source file contains the implementation of apbuart_outbyte_wait(), apbuart_outbyte_polled(), and apbuart_inbyte_nonblocking().

Data Structures
struct	apbuart
	This structure defines the APBUART register block memory map. More...

Typedefs
typedef struct apbuart	apbuart
	This structure defines the APBUART register block memory map.

Functions
int	apbuart_inbyte_nonblocking (apbuart *regs)
	Clears all errors and tries to get one character from the receiver FIFO. More...
void	apbuart_outbyte_polled (apbuart *regs, char ch)
	Waits until an empty transmitter FIFO was observed and then stores the character to the data register. More...
void	apbuart_outbyte_wait (const apbuart *regs)
	Ensures that at least once an empty transmitter FIFO was observed. More...

Detailed Description

This group contains the APBUART interfaces.

Function Documentation

apbuart_inbyte_nonblocking()

int apbuart_inbyte_nonblocking

(

apbuart *

regs

)

Clears all errors and tries to get one character from the receiver FIFO.

Parameters

regs	is the pointer to the APBUART register block.

Return values

-1	The receiver FIFO was empty.

Returns

Returns the first character of the receiver FIFO if it was non-empty.

apbuart_outbyte_polled()

void apbuart_outbyte_polled	(	apbuart *	regs,
		char	ch
	)

Waits until an empty transmitter FIFO was observed and then stores the character to the data register.

Parameters

regs	is the pointer to the APBUART register block.
ch	is the character to output.

apbuart_outbyte_wait()

void apbuart_outbyte_wait

(

const apbuart *

regs

)

Ensures that at least once an empty transmitter FIFO was observed.

Parameters

regs	is the pointer to the APBUART register block.