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Author: MIKROE
Last Updated: 2024-10-31
Package Version: 2.1.0.14
mikroSDK Library: 2.0.0.0
Category: Port expander
Downloaded: 175 times
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License: MIT license
EXPAND 5 Click features a low-voltage 24-bit I2C and SMBus I/O expander. This 24-bit I/O expander is designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C serial interface.
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DOWNLOAD LINK | RELATED COMPILER | CONTAINS |
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4371_expand_5_click.zip [296.59KB] | mikroC AI for ARM GCC for ARM Clang for ARM mikroC AI for PIC mikroC AI for PIC32 XC32 GCC for RISC-V Clang for RISC-V mikroC AI for AVR mikroC AI for dsPIC XC16 |
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EXPAND 5 Click features a low-voltage 24-bit I2C and SMBus I/O expander. This 24-bit I/O expander is designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C serial interface. This Click board™ features the TCA6424A from Texas Instruments, and it operates over a power supply voltage range of 1.65V to 5.5V.
We provide a library for the Expand5 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.
This library contains API for Expand5 Click driver.
Config Object Initialization function.
void expand5_cfg_setup ( expand5_cfg_t *cfg );
Initialization function.
EXPAND5_RETVAL expand5_init ( expand5_t ctx, expand5_cfg_t cfg );
Set all OUTPUT pins' logic levels in all banks function
void expand5_write_all_banks ( expand5_t *ctx, uint8_t bank0, uint8_t bank1, uint8_t bank2 );
Get all pin polarity ( normal/inverted ) settings from one bank function
uint8_t expand5_get_bank_pol ( expand5_t *ctx, uint8_t bank );
Get a single pin's direction ( I/O ) setting function
uint8_t expand5_get_pin_dir ( expand5_t *ctx, uint16_t pin );
This example demonstrates the use of Expand 5 Click board.
The demo application is composed of two sections :
Initalizes I2C driver, resets the device, configures all pins as output and makes an initial log.
void application_init ( void )
{
log_cfg_t log_cfg;
expand5_cfg_t cfg;
/**
* Logger initialization.
* Default baud rate: 115200
* Default log level: LOG_LEVEL_DEBUG
* @note If USB_UART_RX and USB_UART_TX
* are defined as HAL_PIN_NC, you will
* need to define them manually for log to work.
* See @b LOG_MAP_USB_UART macro definition for detailed explanation.
*/
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
expand5_cfg_setup( &cfg );
EXPAND5_MAP_MIKROBUS( cfg, MIKROBUS_1 );
expand5_init( &expand5, &cfg );
Delay_ms ( 100 );
log_printf( &logger, "------------------- \r\n" );
log_printf( &logger, " EXPAND 5 Click \r\n" );
log_printf( &logger, "------------------- \r\n" );
expand5_reset( &expand5 );
expand5_set_all_dir( &expand5, bank_out, bank_out, bank_out );
Delay_ms ( 100 );
log_printf( &logger, " Pins configured \r\n" );
log_printf( &logger, " as output \r\n" );
log_printf( &logger, "------------------- \r\n" );
}
This example shows the capabilities of the EXPAND 5 Click by toggling each of the 24 available pins.
void application_task ( void )
{
for ( pin_num = EXPAND5_P00; pin_num <= EXPAND5_P27; pin_num++ )
{
expand5_write_all_banks ( &expand5, bank_low, bank_low, bank_low );
expand5_write_pin ( &expand5, pin_num, EXPAND5_HIGH );
log_printf( &logger, "Pin %u is high \r\n", ( uint16_t ) pin_num );
Delay_ms ( 200 );
expand5_write_all_banks ( &expand5, bank_low, bank_low, bank_low );
}
log_printf( &logger, "------------------- \r\n" );
Delay_ms ( 1000 );
}
The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.
Other mikroE Libraries used in the example:
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. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.