esphome::spi::SPIDelegateBitBash Class Reference

An implementation of SPI that relies only on software toggling of pins. More...

#include <spi.h>

Inheritance diagram for esphome::spi::SPIDelegateBitBash:

Public Member Functions
	SPIDelegateBitBash (uint32_t clock, SPIBitOrder bit_order, SPIMode mode, GPIOPin *cs_pin, GPIOPin *clk_pin, GPIOPin *sdo_pin, GPIOPin *sdi_pin)
uint8_t	transfer (uint8_t data) override
void	write (uint16_t data, size_t num_bits) override
void	write16 (uint16_t data) override
Public Member Functions inherited from esphome::spi::SPIDelegate
	SPIDelegate ()=default
	SPIDelegate (uint32_t data_rate, SPIBitOrder bit_order, SPIMode mode, GPIOPin *cs_pin)
virtual	~SPIDelegate ()
virtual void	begin_transaction ()
virtual void	end_transaction ()
virtual void	transfer (uint8_t *ptr, size_t length)
virtual void	transfer (const uint8_t *txbuf, uint8_t *rxbuf, size_t length)
virtual void	write_cmd_addr_data (size_t cmd_bits, uint32_t cmd, size_t addr_bits, uint32_t address, const uint8_t *data, size_t length, uint8_t bus_width)
virtual void	write_array16 (const uint16_t *data, size_t length)
virtual void	write_array (const uint8_t *ptr, size_t length)
virtual void	read_array (uint8_t *ptr, size_t length)
virtual bool	is_ready ()

Protected Member Functions
void HOT	cycle_clock_ ()
uint16_t	transfer_ (uint16_t data, size_t num_bits)

Protected Attributes
GPIOPin *	clk_pin_
GPIOPin *	sdo_pin_
GPIOPin *	sdi_pin_
uint32_t	last_transition_ {0}
uint32_t	wait_cycle_
SPIClockPolarity	clock_polarity_
SPIClockPhase	clock_phase_
Protected Attributes inherited from esphome::spi::SPIDelegate
SPIBitOrder	bit_order_ {BIT_ORDER_MSB_FIRST}
uint32_t	data_rate_ {1000000}
SPIMode	mode_ {MODE0}
GPIOPin *	cs_pin_ {NullPin::NULL_PIN}

Detailed Description

An implementation of SPI that relies only on software toggling of pins.

Definition at line 257 of file spi.h.

Constructor & Destructor Documentation

SPIDelegateBitBash()

esphome::spi::SPIDelegateBitBash::SPIDelegateBitBash ( uint32_t  clock, SPIBitOrder  bit_order, SPIMode  mode, GPIOPin *  cs_pin, GPIOPin *  clk_pin, GPIOPin *  sdo_pin, GPIOPin *  sdi_pin  )

inline

Definition at line 259 of file spi.h.

Member Function Documentation

cycle_clock_()

void HOT esphome::spi::SPIDelegateBitBash::cycle_clock_ ( )

inlineprotected

Definition at line 283 of file spi.h.

transfer()

uint8_t esphome::spi::SPIDelegateBitBash::transfer ( uint8_t  data )

overridevirtual

Implements esphome::spi::SPIDelegate.

Definition at line 78 of file spi.cpp.

transfer_()

uint16_t esphome::spi::SPIDelegateBitBash::transfer_ ( uint16_t  data, size_t  num_bits  )

protected

Definition at line 82 of file spi.cpp.

write()

void esphome::spi::SPIDelegateBitBash::write ( uint16_t  data, size_t  num_bits  )

overridevirtual

Reimplemented from esphome::spi::SPIDelegate.

Definition at line 80 of file spi.cpp.

write16()

void esphome::spi::SPIDelegateBitBash::write16 ( uint16_t  data )

inlineoverridevirtual

Reimplemented from esphome::spi::SPIDelegate.

Definition at line 272 of file spi.h.

Field Documentation

clk_pin_

GPIOPin* esphome::spi::SPIDelegateBitBash::clk_pin_

protected

Definition at line 272 of file spi.h.

clock_phase_

SPIClockPhase esphome::spi::SPIDelegateBitBash::clock_phase_

protected

Definition at line 281 of file spi.h.

clock_polarity_

SPIClockPolarity esphome::spi::SPIDelegateBitBash::clock_polarity_

protected

Definition at line 280 of file spi.h.

last_transition_

uint32_t esphome::spi::SPIDelegateBitBash::last_transition_ {0}

protected

Definition at line 278 of file spi.h.

sdi_pin_

GPIOPin* esphome::spi::SPIDelegateBitBash::sdi_pin_

protected

Definition at line 277 of file spi.h.

sdo_pin_

GPIOPin* esphome::spi::SPIDelegateBitBash::sdo_pin_

protected

Definition at line 276 of file spi.h.

wait_cycle_

uint32_t esphome::spi::SPIDelegateBitBash::wait_cycle_

protected

Definition at line 279 of file spi.h.

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

• /opt/build/esphome/esphome/components/spi/spi.h
• /opt/build/esphome/esphome/components/spi/spi.cpp