I2cDevice

Description

The I2cDevice object represents a generic I2C device operating on a parent I2cBus object. Data can be written to an I2C slave at address address using write() and read from a I2C slave using read().

› Inherits:: Object
› Inherited by:: I2cEeprom, Ltc2483Adc, Sht3x

Overview

Properties

Methods

Signals

Object.completed()

Properties

address

This property holds the bus address of the I2C device.

› Type:: UnsignedInteger
› Default:: 0
› Signal:: addressChanged()
› Attributes:: Writable

Methods

read(UnsignedInteger bytes)

This method reads the specified number of bytes from the I2C slave. Returns an empty buffer if the slave did not respond or an error occurred.

› Returns:: ArrayBuffer

write(ArrayBuffer data)

This method writes the specified bytes to the I2C slave. Returns false if the slave did not respond (acknowledge) or an error occurred.

› Returns:: Boolean

Example

import InCore.Foundation 2.5
import InCore.IO 2.5

Application {
    FtdiI2cBus {
        I2cDevice {
            id: eeprom
            address: 0x50
        }
    }

    ByteArray {
        id: eepromCommandBuffer
        data: [ 0x80 ]
    }

    ByteArray {
        id: eepromReadBuffer
    }

    onCompleted: {
        eeprom.write(eepromCommandBuffer.arrayBuffer)
        eepromReadBuffer.arrayBuffer = eeprom.read(16)
        console.log(eepromReadBuffer.hex)
    }
}