ESPHome 2025.5.0
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Public Member Functions | Protected Attributes | Static Protected Attributes
esphome::spi::SPIDelegate Class Referenceabstract

#include <spi.h>

Inheritance diagram for esphome::spi::SPIDelegate:
esphome::spi::SPIDelegateBitBash esphome::spi::SPIDelegateDummy

Public Member Functions

 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 uint8_t transfer (uint8_t data)=0
 
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 (uint16_t data, size_t num_bits)
 write a variable length data item, up to 16 bits.
 
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 write16 (uint16_t data)
 
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 Attributes

SPIBitOrder bit_order_ {BIT_ORDER_MSB_FIRST}
 
uint32_t data_rate_ {1000000}
 
SPIMode mode_ {MODE0}
 
GPIOPin * cs_pin_ {NullPin::NULL_PIN}
 

Static Protected Attributes

static SPIDelegate *const NULL_DELEGATE
 

Detailed Description

Definition at line 176 of file spi.h.

Constructor & Destructor Documentation

◆ SPIDelegate() [1/2]

esphome::spi::SPIDelegate::SPIDelegate ( )
default

◆ SPIDelegate() [2/2]

esphome::spi::SPIDelegate::SPIDelegate ( uint32_t data_rate,
SPIBitOrder bit_order,
SPIMode mode,
GPIOPin * cs_pin )
inline

Definition at line 182 of file spi.h.

◆ ~SPIDelegate()

virtual esphome::spi::SPIDelegate::~SPIDelegate ( )
inlinevirtual

Definition at line 190 of file spi.h.

Member Function Documentation

◆ begin_transaction()

virtual void esphome::spi::SPIDelegate::begin_transaction ( )
inlinevirtual

Reimplemented in esphome::spi::SPIDelegateDummy.

Definition at line 193 of file spi.h.

◆ end_transaction()

virtual void esphome::spi::SPIDelegate::end_transaction ( )
inlinevirtual

Reimplemented in esphome::spi::SPIDelegateDummy.

Definition at line 196 of file spi.h.

◆ is_ready()

bool esphome::spi::SPIDelegate::is_ready ( )
virtual

Definition at line 14 of file spi.cpp.

◆ read_array()

virtual void esphome::spi::SPIDelegate::read_array ( uint8_t * ptr,
size_t length )
inlinevirtual

Definition at line 246 of file spi.h.

◆ transfer() [1/3]

virtual void esphome::spi::SPIDelegate::transfer ( const uint8_t * txbuf,
uint8_t * rxbuf,
size_t length )
inlinevirtual

Definition at line 204 of file spi.h.

◆ transfer() [2/3]

virtual void esphome::spi::SPIDelegate::transfer ( uint8_t * ptr,
size_t length )
inlinevirtual

Definition at line 202 of file spi.h.

◆ transfer() [3/3]

virtual uint8_t esphome::spi::SPIDelegate::transfer ( uint8_t data)
pure virtual

Implemented in esphome::spi::SPIDelegateBitBash, and esphome::spi::SPIDelegateDummy.

◆ write()

virtual void esphome::spi::SPIDelegate::write ( uint16_t data,
size_t num_bits )
inlinevirtual

write a variable length data item, up to 16 bits.

Parameters
dataThe data to send. Should be LSB-aligned (i.e. top bits will be discarded.)
num_bitsThe number of bits to send

Reimplemented in esphome::spi::SPIDelegateBitBash.

Definition at line 214 of file spi.h.

◆ write16()

virtual void esphome::spi::SPIDelegate::write16 ( uint16_t data)
inlinevirtual

Reimplemented in esphome::spi::SPIDelegateBitBash.

Definition at line 223 of file spi.h.

◆ write_array()

virtual void esphome::spi::SPIDelegate::write_array ( const uint8_t * ptr,
size_t length )
inlinevirtual

Definition at line 240 of file spi.h.

◆ write_array16()

virtual void esphome::spi::SPIDelegate::write_array16 ( const uint16_t * data,
size_t length )
inlinevirtual

Definition at line 233 of file spi.h.

◆ write_cmd_addr_data()

virtual void esphome::spi::SPIDelegate::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 )
inlinevirtual

Definition at line 218 of file spi.h.

Field Documentation

◆ bit_order_

SPIBitOrder esphome::spi::SPIDelegate::bit_order_ {BIT_ORDER_MSB_FIRST}
protected

Definition at line 255 of file spi.h.

◆ cs_pin_

GPIOPin* esphome::spi::SPIDelegate::cs_pin_ {NullPin::NULL_PIN}
protected

Definition at line 258 of file spi.h.

◆ data_rate_

uint32_t esphome::spi::SPIDelegate::data_rate_ {1000000}
protected

Definition at line 256 of file spi.h.

◆ mode_

SPIMode esphome::spi::SPIDelegate::mode_ {MODE0}
protected

Definition at line 257 of file spi.h.

◆ NULL_DELEGATE

SPIDelegate *const esphome::spi::SPIDelegate::NULL_DELEGATE
staticprotected
Initial value:
=
new SPIDelegateDummy()

Definition at line 259 of file spi.h.

The documentation for this class was generated from the following files:
Generated by doxygen 1.12.0