HalI2cSe050Comm Class Reference

CRTP adapter mapping BaseI2c primitives to se050::I2cTransceiveInterface. More...

#include <Se050Handler.h>

Inheritance diagram for HalI2cSe050Comm:

Public Member Functions
	HalI2cSe050Comm (BaseI2c &i2c, BaseGpio *reset_gpio) noexcept
	Construct the CRTP I²C adapter.
bool	EnsureInitialized () noexcept
se050::Error	I2cWrite (const std::uint8_t *tx, std::size_t tx_len, std::uint32_t timeout_ms) noexcept
	Write bytes on I²C.
se050::Error	I2cRead (std::uint8_t *rx, std::size_t rx_len, std::uint32_t timeout_ms) noexcept
	Read bytes on I²C.
se050::Error	Transceive (const std::uint8_t *tx, std::size_t tx_len, std::uint8_t *rx, std::size_t rx_cap, std::size_t *rx_len_out, std::uint32_t timeout_ms) noexcept
	Combined write-then-read (T=1oI2C frame).
se050::Error	HardwareReset () noexcept
void	delay_ms_impl (std::uint32_t ms) noexcept
bool	HoldBus (std::uint32_t timeout_ms) noexcept
	Hold the I²C bus across a T=1 APDU (Write/Read pairs). Nested I2cWrite/Read skip lock.
void	ReleaseBus () noexcept
bool	BusHeld () const noexcept

Private Attributes
BaseI2c &	i2c_
BaseGpio *	reset_gpio_
bool	bus_held_ {false}

Detailed Description

CRTP adapter mapping BaseI2c primitives to se050::I2cTransceiveInterface.

Reset GPIO

When reset_gpio is non-null, HardwareReset() asserts reset with **SetInactive()**, waits 2 ms, then releases with **SetActive()** and waits 10 ms (same cadence as the ESP-IDF reference transport). Configure **BaseGpio** polarity so this sequence matches your SE_RESET wiring (typical nRESET: assert = drive low = logical inactive on an active-high GPIO).

Constructor & Destructor Documentation

HalI2cSe050Comm()

HalI2cSe050Comm::HalI2cSe050Comm ( BaseI2c &  i2c, BaseGpio *  reset_gpio  )

inlinenoexcept

Construct the CRTP I²C adapter.

Parameters

i2c	Host I²C device (typically 7-bit address 0x48).
reset_gpio	Optional SE_RESET line; nullptr if unused.

Member Function Documentation

BusHeld()

bool HalI2cSe050Comm::BusHeld ( ) const

inlinenoexcept

delay_ms_impl()

void HalI2cSe050Comm::delay_ms_impl ( std::uint32_t  ms )

noexcept

EnsureInitialized()

bool HalI2cSe050Comm::EnsureInitialized ( )

inlinenoexcept

HardwareReset()

se050::Error HalI2cSe050Comm::HardwareReset ( )

noexcept

HoldBus()

bool HalI2cSe050Comm::HoldBus ( std::uint32_t  timeout_ms )

noexcept

Hold the I²C bus across a T=1 APDU (Write/Read pairs). Nested I2cWrite/Read skip lock.

Parameters

timeout_ms

How long to wait for the bus lock.

I2cRead()

se050::Error HalI2cSe050Comm::I2cRead ( std::uint8_t *  rx, std::size_t  rx_len, std::uint32_t  timeout_ms  )

noexcept

Read bytes on I²C.

Parameters

rx	Receive buffer.
rx_len	Byte count to read.
timeout_ms	Transfer deadline.

I2cWrite()

se050::Error HalI2cSe050Comm::I2cWrite ( const std::uint8_t *  tx, std::size_t  tx_len, std::uint32_t  timeout_ms  )

noexcept

Write bytes on I²C.

Parameters

tx	Transmit payload.
tx_len	Byte count.
timeout_ms	Transfer deadline.

ReleaseBus()

void HalI2cSe050Comm::ReleaseBus ( )

noexcept

Transceive()

se050::Error HalI2cSe050Comm::Transceive ( const std::uint8_t *  tx, std::size_t  tx_len, std::uint8_t *  rx, std::size_t  rx_cap, std::size_t *  rx_len_out, std::uint32_t  timeout_ms  )

noexcept

Combined write-then-read (T=1oI2C frame).

Parameters

tx	Transmit payload.
tx_len	Transmit length.
rx	Receive buffer.
rx_cap	Receive capacity.
rx_len_out	Actual bytes received.
timeout_ms	Transfer deadline.

Member Data Documentation

bus_held_

bool HalI2cSe050Comm::bus_held_ {false}

private

i2c_

BaseI2c& HalI2cSe050Comm::i2c_

private

reset_gpio_

BaseGpio* HalI2cSe050Comm::reset_gpio_

private

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

• Se050Handler.h
• Se050Handler.cpp