i2cextend2  2.0.0.0
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I2C Extend 2 click

I2C Extend 2 Click is a compact add-on board suitable for I2C communication bus extension. This board features the PCA9615, a 2-channel multipoint differential I2C bus buffer with hot-swap logic from NXP Semiconductors. The PCA9615 converts the two default I2C signals into four differential signals, two for SCL and two for SDA.

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Click library

  • Author : Stefan Ilic
  • Date : Jul 2021.
  • Type : I2C type

Software Support

We provide a library for the I2CExtend2 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for I2CExtend2 Click driver.

Standard key functions :

Example key functions :

Example Description

This is an example which demonstrates the use of I2C Extend 2 Click board.

The demo application is composed of two sections :

Application Init

Initialization driver enables - I2C, check communication with device 6DOF IMU 11 Click connected to the I2C Extend 2 Click ( Remote Mode ), set default configuration and start measurement.

void application_init ( void )
{
log_cfg_t log_cfg;
i2cextend2_cfg_t i2cextend2_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
i2cextend2_cfg_setup( &i2cextend2_cfg );
I2CEXTEND2_MAP_MIKROBUS( i2cextend2_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == i2cextend2_init( &i2cextend2, &i2cextend2_cfg ) )
{
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
{
log_printf( &logger, " SUCCESS \r\n" );
log_printf( &logger, "------------------------\r\n" );
}
else
{
log_printf( &logger, " ERROR \r\n" );
log_printf( &logger, " Reset the device \r\n" );
log_printf( &logger, "------------------------\r\n" );
for ( ; ; );
}
Delay_ms ( 100 );
log_info( &logger, " Application Task " );
log_printf( &logger, "------------------------\r\n" );
}

Application Task

In this example, we read Accel and Mag axis of the connected 6DOF IMU 11 Click boards to the I2C Extend 2 Click ( Remote Mode ) which is connected by a LAN cable to I2C Extend 2 Click ( Local Mode ). 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 ( void )
{
log_printf( &logger, "\t Accel \t|\t Mag \r\n" );
log_printf( &logger, "------------------------------------------------\r\n" );
log_printf( &logger, "\t Accel X: %d\t|", axis );
log_printf( &logger, "\t Mag X: %d\r\n", axis );
log_printf( &logger, "\t Accel Y: %d\t|", axis );
log_printf( &logger, "\t Mag Y: %d\r\n", axis );
log_printf( &logger, "\t Accel Z: %d\t|", axis );
log_printf( &logger, "\t Mag Z: %d\r\n", axis );
log_printf( &logger, "------------------------------------------------\r\n" );
Delay_ms( 1000 );
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.I2CExtend2

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.


C6DOFIMU11_CNTL2_ACCEL_EN_STANDBY_MODE
#define C6DOFIMU11_CNTL2_ACCEL_EN_STANDBY_MODE
Definition: i2cextend2.h:116
C6DOFIMU11_REG_MAG_YOUT_L
#define C6DOFIMU11_REG_MAG_YOUT_L
Definition: i2cextend2.h:81
C6DOFIMU11_REG_CNTL2
#define C6DOFIMU11_REG_CNTL2
Definition: i2cextend2.h:75
C6DOFIMU11_REG_WHO_AM_I
#define C6DOFIMU11_REG_WHO_AM_I
I2C Extend 2 description register.
Definition: i2cextend2.h:74
i2cextend2_rmt_write
void i2cextend2_rmt_write(i2cextend2_t *ctx, uint8_t reg, uint8_t tx_data)
Generic write data in Remote Mode function.
I2CEXTEND2_EXTEND_ENABLE
#define I2CEXTEND2_EXTEND_ENABLE
Definition: i2cextend2.h:101
C6DOFIMU11_CNTL2_TEMP_EN_STANDBY_MODE
#define C6DOFIMU11_CNTL2_TEMP_EN_STANDBY_MODE
6DOF IMU 11 bit mask.
Definition: i2cextend2.h:114
C6DOFIMU11_REG_MAG_ZOUT_L
#define C6DOFIMU11_REG_MAG_ZOUT_L
Definition: i2cextend2.h:82
i2cextend2_enable
void i2cextend2_enable(i2cextend2_t *ctx, uint8_t en_extend)
Enable extend function.
application_task
void application_task(void)
Definition: main.c:104
i2cextend2_init
err_t i2cextend2_init(i2cextend2_t *ctx, i2cextend2_cfg_t *cfg)
I2C Extend 2 initialization function.
i2cextend2_cfg_setup
void i2cextend2_cfg_setup(i2cextend2_cfg_t *cfg)
I2C Extend 2 configuration object setup function.
C6DOFIMU11_REG_INC3
#define C6DOFIMU11_REG_INC3
Definition: i2cextend2.h:76
C6DOFIMU11_REG_ACCEL_YOUT_L
#define C6DOFIMU11_REG_ACCEL_YOUT_L
Definition: i2cextend2.h:78
C6DOFIMU11_INC3_IEL1_FIFO_TRIG
#define C6DOFIMU11_INC3_IEL1_FIFO_TRIG
Definition: i2cextend2.h:118
C6DOFIMU11_REG_MAG_XOUT_L
#define C6DOFIMU11_REG_MAG_XOUT_L
Definition: i2cextend2.h:80
i2cextend2_cfg_t
I2C Extend 2 Click configuration object.
Definition: i2cextend2.h:179
C6DOFIMU11_WHO_AM_I_WIA_ID
#define C6DOFIMU11_WHO_AM_I_WIA_ID
Definition: i2cextend2.h:123
I2CEXTEND2_MAP_MIKROBUS
#define I2CEXTEND2_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: i2cextend2.h:149
i2cextend2_6dofimu11_get_axis
void i2cextend2_6dofimu11_get_axis(i2cextend2_t *ctx, uint8_t axis_out_reg)
Definition: main.c:35
i2cextend2_t
I2C Extend 2 Click context object.
Definition: i2cextend2.h:162
C6DOFIMU11_CNTL2_RES_MAX2
#define C6DOFIMU11_CNTL2_RES_MAX2
Definition: i2cextend2.h:121
axis
int16_t axis
Definition: main.c:33
C6DOFIMU11_CNTL2_GSEL_8G
#define C6DOFIMU11_CNTL2_GSEL_8G
Definition: i2cextend2.h:120
C6DOFIMU11_CNTL2_MAG_EN_OPERATING_MODE
#define C6DOFIMU11_CNTL2_MAG_EN_OPERATING_MODE
Definition: i2cextend2.h:122
C6DOFIMU11_CNTL2_MAG_EN_STANDBY_MODE
#define C6DOFIMU11_CNTL2_MAG_EN_STANDBY_MODE
Definition: i2cextend2.h:115
application_init
void application_init(void)
Definition: main.c:46
C6DOFIMU11_REG_ACCEL_ZOUT_L
#define C6DOFIMU11_REG_ACCEL_ZOUT_L
Definition: i2cextend2.h:79
C6DOFIMU11_INC3_IEL2_FIFO_TRIG
#define C6DOFIMU11_INC3_IEL2_FIFO_TRIG
Definition: i2cextend2.h:117
C6DOFIMU11_REG_ACCEL_XOUT_L
#define C6DOFIMU11_REG_ACCEL_XOUT_L
Definition: i2cextend2.h:77
C6DOFIMU11_CNTL2_ACCEL_EN_OPERATING_MODE
#define C6DOFIMU11_CNTL2_ACCEL_EN_OPERATING_MODE
Definition: i2cextend2.h:119
i2cextend2_rmt_read
uint8_t i2cextend2_rmt_read(i2cextend2_t *ctx, uint8_t reg)
Generic read data in Remote Mode function.