Two Wire-interface(TWI)

This is the common API for TWIs.

Additional features are available in the documentation of the specific modules.

See Quickstart guide for Common service TWI.

Platform Dependencies

The TWI API is partially chip- or platform-specific. While all platforms provide mostly the same functionality, there are some variations around how different bus types and clock tree structures are handled.

The following functions are available on all platforms, but there may be variations in the function signature (i.e. parameters) and behaviour. These functions are typically called by platform-specific parts of drivers, and applications that aren't intended to be portable:

• Master TWI Module initialization

  status_code_t twi_master_setup(*twi_module_pointer, twi_master_options_t *opt) 

• Enables TWI Module

  void twi_master_enable(*twi_module_pointer) 

• Disables TWI Module

  void twi_master_disable(*twi_module_pointer) 

• Read data from a slave device

  status_code_t twi_master_read(*twi_module_pointer, twi_package_t *package) 

• Write data from to a slave device

  status_code_t twi_master_write(*twi_module_pointer, twi_package_t *package) 

Additional features are available in the documentation of the specific modules.

Platform Dependencies

The twi API is partially chip- or platform-specific. While all platforms provide mostly the same functionality, there are some variations around how different bus types and clock tree structures are handled.

The following functions are available on all platforms, but there may be variations in the function signature (i.e. parameters) and behaviour. These functions are typically called by platform-specific parts of drivers, and applications that aren't intended to be portable:

• twi_slave_setup()
• twi_slave_enable()
• twi_slave_disable()
• twi_slave_read()
• twi_slave_write()

Typedefs
typedef TWI_t *	twi_master_t
	This type can be used independently to refer to TWI master module for the architecture used. More...
typedef TWI_t *	twi_slave_t
	This type can be used independently to refer to TWI slave module for the architecture used. More...

twi_master_t

This type can be used independently to refer to TWI master module for the architecture used.

It refers to the correct type definition for the architecture, ie. TWI_t* for XMEGA or avr32_twim_t* for UC3

twi_slave_t

This type can be used independently to refer to TWI slave module for the architecture used.

It refers to the correct type definition for the architecture, ie. TWI_t* for XMEGA or avr32_twi_t* for UC3