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mikroSDK Library

I2C Extend click

Rating:

5

Author: MIKROE

Last Updated: 2020-08-04

Package Version: 1.0.0.0

mikroSDK Library: 1.0.0.0

Category: I2C

Downloaded: 2737 times

Not followed.

License: MIT license  

I2C Extend Click is a compact add-on board for applications that require extending the I2C communication bus over a long distance.[MS1] This board features the LTC4331 - an I2C slave device extender over a rugged differential link, from Analog Devices.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

I2C Extend Click

I2C Extend Click

Native view of the I2C Extend Click board.

View full image
I2C Extend Click

I2C Extend Click

Front and back view of the I2C Extend Click board.

View full image

Library Description

The library covers all the necessary functions to control I2C Extend Click board. A library performs the communication with the LTC4331 I2C Slave Device Extender Over Rugged Differential Link via I2C interface.

Key functions:

  • void i2cextend_generic_write ( uint8_t reg, uint8_t tx_data ) - Generic write data function.
  • uint8_t i2cextend_generic_read ( uint8_t reg ) - Generic read data function.
  • uint8_t i2cextend_rmt_read ( uint8_t rmt_slave_addr, uint8_t reg ) - Generic read data in Remote Mode function.

Examples description

The application is composed of three sections :

  • System Initialization - Initializes I2C, sets INT pin as input and RST nad CS pin as outputs and begins to write log.
  • Application Initialization - Initialization driver enables - I2C, check communication with device 6DOF IMU 11 Click connected to the I2C Extend Click ( Remote Mode ), set default configuration and start measurement.
  • Application Task - (code snippet) This is an example which demonstrates the use of I2C Extend Click board. In this example, we read Accel and Mag axis of the connected 6DOF IMU 11 Click boards to the I2C Extend Click ( Remote Mode ) which is connected by a LAN cable to I2C Extend Click ( Local Mode ) placed in the mikroBUS 1. Results are being sent to the Usart Terminal where you can track their changes. All data logs write on USB uart changes for every 2 sec.
void application_task ( )
{
    mikrobus_logWrite( "   Accel   |    Mag    ", _LOG_LINE );
    mikrobus_logWrite( "------------------------", _LOG_LINE );

    i2cextend_6dofimu11_get_axis( C6DOFIMU11_REG_ACCEL_XOUT_L );
    mikrobus_logWrite( " X :", _LOG_TEXT );
    IntToStr( axis, log_text );
    mikrobus_logWrite( log_text, _LOG_TEXT );
    mikrobus_logWrite( " | ", _LOG_TEXT );

    i2cextend_6dofimu11_get_axis( C6DOFIMU11_REG_MAG_XOUT_L );
    mikrobus_logWrite( " X :", _LOG_TEXT );
    IntToStr( axis, log_text );
    mikrobus_logWrite( log_text, _LOG_LINE );

    i2cextend_6dofimu11_get_axis( C6DOFIMU11_REG_ACCEL_YOUT_L );
    mikrobus_logWrite( " Y :", _LOG_TEXT );
    IntToStr( axis, log_text );
    mikrobus_logWrite( log_text, _LOG_TEXT );
    mikrobus_logWrite( " | ", _LOG_TEXT );

    i2cextend_6dofimu11_get_axis( C6DOFIMU11_REG_MAG_YOUT_L );
    mikrobus_logWrite( " Y :", _LOG_TEXT );
    IntToStr( axis, log_text );
    mikrobus_logWrite( log_text, _LOG_LINE );

    i2cextend_6dofimu11_get_axis( C6DOFIMU11_REG_ACCEL_ZOUT_L );
    mikrobus_logWrite( " Z :", _LOG_TEXT );
    IntToStr( axis, log_text );
    mikrobus_logWrite( log_text, _LOG_TEXT );
    mikrobus_logWrite( " | ", _LOG_TEXT );

    i2cextend_6dofimu11_get_axis( C6DOFIMU11_REG_MAG_ZOUT_L );
    mikrobus_logWrite( " Z :", _LOG_TEXT );
    IntToStr( axis, log_text );
    mikrobus_logWrite( log_text, _LOG_LINE );
    mikrobus_logWrite( "------------------------", _LOG_LINE );
    Delay_ms( 1000 );
}


Additional Functions :

  • void i2cextend_6dofimu11_get_axis ( uint8_t axis_out_reg )
  • Read axis.

Other mikroE Libraries used in the example:

  • I2C
  • UART
  • Conversions

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

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