bmptk::hardware::i2c_master< extern_scl, extern_sda, frequency > Class Template Reference

simple I2C bus master More...

#include <i2c.h>

Inheritance diagram for bmptk::hardware::i2c_master< extern_scl, extern_sda, frequency >:

Static Public Member Functions
static void	init ()
	initialize the i2c pins
static void	put_start ()
	output an i2c start condition
static void	put_stop ()
	output an i2c stop condition
static bool	get_ack ()
	receive and return an ack
static void	put_ack ()
	output an ack
static void	put_nack ()
	output a nack
static void	put_byte (unsigned char x)
	output a byte
static unsigned char	get_byte ()
	receive and return a byte (without ack or nack)
Static Public Member Functions inherited from bmptk::hardware::i2c_interface
static void	init ()
	initialize the i2c bus
static void	put_start ()
	output an I2C start condition
static void	put_stop ()
	output an I2C stop condition
static bool	get_ack ()
	get an acknowledge
static void	put_ack ()
	output an ack
static void	put_nack ()
	output a nack
static void	put_byte (unsigned char x)
	output a byte, 8 bits, MSB first
static unsigned char	get_byte ()
	get (receive) a byte, 8 bits, MSB first
static void	write (unsigned char address, unsigned const char *data, int n)
	multi-byte write transaction
static void	read (unsigned char address, unsigned char *data, int n)
	multi-byte read transaction

Additional Inherited Members
Public Types inherited from bmptk::hardware::i2c_interface
enum	{ type = type_i2c_bus }
	identify this type as an i2c bus

Detailed Description

template<class extern_scl, class extern_sda, unsigned int frequency = 1 * bmptk::MHz>
class bmptk::hardware::i2c_master< extern_scl, extern_sda, frequency >

simple I2C bus master

This class implements a simple bit-banged (software-only) I2C bus master. It does not support clock stretching.

The last parameter is the (maximum) frequency of the clock. For higher frequency arguments, the actual frequency will be limited by the target's bmptk::current_time() calls. On an LPC1114 at 12 MHz, the real maximum frequency is ~ 50 kHz.

Definition at line 118 of file i2c.h.

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

• hardware/i2c.h