Class ArchXT_Port

Defined in File arch_xt_port.h

Inheritance Relationships

Base Types

public Port (Class Port)
public InterruptHandler (Class InterruptHandler)

Class Documentation

class ArchXT_Port : public Port, public InterruptHandler 

Implementation of a GPIO port controller for XT core series, based on the generic Port class.

The Slewrate limit is unsupported.

Public Functions

ArchXT_Port(char name, const ArchXT_PortConfig &config)

virtual bool init(Device &device) override

Virtual method called when the device is initialised. This is where the peripheral can allocate its I/O registers, interrupts or connect signals.

Returns:: boolean indicates the success of all allocations.

virtual void reset() override: Virtual method called when the device is reset. Note that resetting I/O registers is only necessary here if their reset value is not zero.

virtual uint8_t ioreg_read_handler(reg_addr_t addr, uint8_t value) override

Virtual method called when the CPU is reading a I/O register allocated by this peripheral. The value has not been read yet so the module can modify it before the CPU gets it.

Parameters:

addr – the register address in I/O space
value – current cached value of the register

Returns:

actual value of the register

virtual void ioreg_write_handler(reg_addr_t addr, const ioreg_write_t &data) override

Virtual method called when the CPU is writing a I/O register allocated by this peripheral. The value has already been written.

Parameters:

addr – the register address in I/O space
value – the new register content

Protected Functions

virtual void pin_state_changed(uint8_t num, Wire::StateEnum state) override

Callback method called when the resolved state of a pin has changed.