modm API documentation
Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
modm::Pca9548a< I2cMaster > Class Template Reference
External Device Drivers » PCA9548A/TCA9548A I2C Switch

#include <modm/driver/gpio/pca9548a.hpp>

Inheritance diagram for modm::Pca9548a< I2cMaster >:
modm::I2cDevice< I2cMaster >

Public Member Functions

 Pca9548a (uint8_t address=0b1110000)
 
bool setActiveChannel (uint8_t channel)
 
bool readCommandRegister (uint8_t &command_register)
 
bool writeCommandRegister (uint8_t command_register)
 
void attachConfigurationHandler (I2c::ConfigurationHandler handler)
 
bool ping ()
 
bool read (uint8_t *buffer, std::size_t size)
 Starts a write transaction and waits until finished.
 
void setAddress (uint8_t address)
 
bool write (const uint8_t *buffer, std::size_t size)
 Starts a write transaction and waits until finished.
 
bool writeRead (const uint8_t *writeBuffer, std::size_t writeSize, uint8_t *readBuffer, std::size_t readSize)
 Starts a write-read transaction and waits until finished.
 

Protected Member Functions

bool isTransactionRunning ()
 
bool runTransaction ()
 Starts our own transaction and waits until finished.
 
bool startTransaction ()
 Starts the transaction with our own transaction object.
 
bool startTransaction (modm::I2cTransaction *transaction)
 Starts the transaction with a separate transaction object.
 
bool wasTransactionSuccessful ()
 

Protected Attributes

I2cWriteReadTransaction transaction
 

Detailed Description

template<typename I2cMaster>
class modm::Pca9548a< I2cMaster >

PCA9548A/TCA9548A: 8-channel I2C switch with reset

This bidirectional 8-channel switch can be used to multiplex I2C busses.

Author
Sascha Schade

Member Function Documentation

void modm::I2cDevice< I2cMaster, 10 , I2cWriteReadTransaction >::attachConfigurationHandler ( I2c::ConfigurationHandler  handler)
inheritedinline

Attaches a configuration handler, which is called before a transaction, whenever the configuration has to be changed.

bool modm::I2cDevice< I2cMaster, 10 , I2cWriteReadTransaction >::isTransactionRunning ( )
inheritedinlineprotected
Returns
true when transaction is busy.
bool modm::I2cDevice< I2cMaster, 10 , I2cWriteReadTransaction >::ping ( )
inheritedinline
Return Values
truedevice responds to address
falseno device with address found
void modm::I2cDevice< I2cMaster, 10 , I2cWriteReadTransaction >::setAddress ( uint8_t  address)
inheritedinline

Sets a new address of the slave device.

Parameters
addressthe slave address not yet shifted left (address < 128).
bool modm::I2cDevice< I2cMaster, 10 , I2cWriteReadTransaction >::wasTransactionSuccessful ( )
inheritedinlineprotected
Returns
true when transaction did not return an error.
The documentation for this class was generated from the following file: