SpiDevice

Description

The SpiDevice object represents a generic SPI device operating on a parent SpiBus object. Data can be written to an SPI slave at address address using write() and read from an SPI slave using read().

› Inherits:

Object

› Inherited by:

Ade9000

Overview

Properties

address Object.objectId Object.parent

Methods

read() transfer() write() Object.deserializeProperties() Object.fromJson() Object.serializeProperties() Object.toJson()

Signals

Object.completed()

Properties

address

This property holds the bus address of the SPI device. It’s up to the actual SpiBus implementation to select the corresponding slave.

› Type:

UnsignedInteger

› Default:

0

› Signal:

addressChanged()

› Attributes:

Writable

Methods

read(UnsignedInteger bytes)

This method reads the specified number of bytes from the SPI slave. Returns an empty buffer if the transfer failed.

› Returns:

ArrayBuffer

transfer(ArrayBuffer data)

This method transfers the specified bytes to the SPI slave and returns the received bytes (or empty data if transfer failed).

› Returns:

ArrayBuffer

write(ArrayBuffer data)

This method writes the specified bytes to the SPI slave. Returns false if the transfer failed.

› Returns:

Boolean