USRP Hardware Driver and USRP Manual: uhd::spi_iface Class Reference

| USRP Hardware Driver and USRP Manual Version: 4.9.0.makepkg-0-g9ec1f582 UHD and USRP Manual |

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uhd::spi_iface Class Referenceabstract

`#include <uhd/types/serial.hpp>`

## Public Types
typedef std::shared_ptr< spi_iface > | sptr

## Public Member Functions
virtual | ~spi_iface (void)
virtual uint32_t | transact_spi (int which_slave, const spi_config_t &config, uint32_t data, size_t num_bits, bool readback)=0
virtual uint32_t | read_spi (int which_slave, const spi_config_t &config, uint32_t data, size_t num_bits)
virtual void | write_spi (int which_slave, const spi_config_t &config, uint32_t data, size_t num_bits)

## Detailed Description

The SPI interface class. Provides routines to transact SPI and do other useful things which haven't been defined yet.

## Member Typedef Documentation

## ◆ sptr

typedef std::shared_ptr<spi_iface> uhd::spi_iface::sptr

## Constructor & Destructor Documentation

## ◆ ~spi_iface()

virtual uhd::spi_iface::~spi_iface | ( | void |  | ) |
| virtual

## Member Function Documentation

## ◆ read_spi()

virtual uint32_t uhd::spi_iface::read_spi | ( | int | which_slave,
|  | const spi_config_t & | config,
|  | uint32_t | data,
|  | size_t | num_bits )
| virtual

Read from the SPI bus.

Parameters

  which_slave | the slave device number
  config | spi config args
  data | the bits to write out (be sure to set write bit)
  num_bits | how many bits in data

Returns
  spi data

## ◆ transact_spi()

virtual uint32_t uhd::spi_iface::transact_spi | ( | int | which_slave,
|  | const spi_config_t & | config,
|  | uint32_t | data,
|  | size_t | num_bits,
|  | bool | readback )
| pure virtual

Perform a spi transaction.

Parameters

  which_slave | the slave device number
  config | spi config args
  data | the bits to write
  num_bits | how many bits in data
  readback | true to readback a value

Returns
  spi data if readback set

## ◆ write_spi()

virtual void uhd::spi_iface::write_spi | ( | int | which_slave,
|  | const spi_config_t & | config,
|  | uint32_t | data,
|  | size_t | num_bits )
| virtual

Write to the SPI bus.

Parameters

  which_slave | the slave device number
  config | spi config args
  data | the bits to write
  num_bits | how many bits in data

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

- serial.hpp