bit_basher_operations Struct Reference

Bit-bashing operations. More...

#include <bitbash.h>

Data Fields
void(*	write )(struct bit_basher *basher, unsigned int bit_id, unsigned long data)
	Set/clear output bit.
int(*	read )(struct bit_basher *basher, unsigned int bit_id)
	Read input bit.

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Detailed Description

Bit-bashing operations.

Definition at line 15 of file bitbash.h.

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Field Documentation

void( * bit_basher_operations::write)(struct bit_basher *basher, unsigned int bit_id, unsigned long data)

Set/clear output bit.

Parameters:

	basher	Bit-bashing interface
	bit_id	Bit number
	data	Value to write

data will be 0 if a logic 0 should be written (i.e. the bit should be cleared), or -1UL if a logic 1 should be written (i.e. the bit should be set). This is done so that the method may simply binary-AND data with the appropriate bit mask.

Referenced by init_i2c_bit_basher(), init_spi_bit_basher(), and write_bit().

int( * bit_basher_operations::read)(struct bit_basher *basher, unsigned int bit_id)

Read input bit.

Parameters:

	basher	Bit-bashing interface
	bit_id	Bit number

Return values:

	zero	Input is a logic 0
	non-zero	Input is a logic 1

Referenced by init_i2c_bit_basher(), init_spi_bit_basher(), and read_bit().

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The documentation for this struct was generated from the following file:

• include/gpxe/bitbash.h