10 min

Simplify the connection of other add-ons to the mikroBUS™ socket with IDC10 header and PIC18LF27K40

Make compatibility a non-issue!

Adapter Click with EasyPIC v8

Published Nov 01, 2023

Click board™

Adapter Click

Development board

EasyPIC v8


NECTO Studio



Integrate sensors, drivers, and other components into your project setup without hassle



Hardware Overview

How does it work?

Adapter Click represents an adapter board that simplifies the connection of add-ons with IDC10 headers to the mikroBUS™ socket. One 2x5-position 2.54mm pitch header allows you to add sensors, drivers, and various components in a way that suits your project needs. Each header pin corresponds to a pin on the mikroBUS™ socket (except AN and RST pins). Thanks to these pins, the connection with the Click board™ remains firm and stable, always retaining a perfect connection quality. There are two ways to establish such a connection: male or female IDC10 connectors. Both

are provided with the package. You may solder the male IDC10 header on the top side of the Adapter Click and connect the add-on board directly or via IDC10 flat cable. In some cases, a female header socket is a better choice. Solder it either on the top or the bottom side, depending on which is more convenient in given circumstances. Adapter Click allows using both I2C and SPI interfaces, where each mikroBUS™ line is covered, except, as mentioned before, AN and RST lines. The selection can be made by positioning jumpers labeled as INTERFACE SELECTION in an appropriate

position marked as SPI or I2C. Note that all the jumpers' positions must be on the same side, or the Click board™ may become unresponsive. This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the PWR SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. Also, this Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used as a reference for further development.

Adapter Click hardware overview image

Features overview

Development board

EasyPIC v8 is a development board specially designed for the needs of rapid development of embedded applications. It supports many high pin count 8-bit PIC microcontrollers from Microchip, regardless of their number of pins, and a broad set of unique functions, such as the first-ever embedded debugger/programmer. The development board is well organized and designed so that the end-user has all the necessary elements, such as switches, buttons, indicators, connectors, and others, in one place. Thanks to innovative manufacturing technology, EasyPIC v8 provides a fluid and immersive working experience, allowing access anywhere and under any

circumstances at any time. Each part of the EasyPIC v8 development board contains the components necessary for the most efficient operation of the same board. In addition to the advanced integrated CODEGRIP programmer/debugger module, which offers many valuable programming/debugging options and seamless integration with the Mikroe software environment, the board also includes a clean and regulated power supply module for the development board. It can use a wide range of external power sources, including a battery, an external 12V power supply, and a power source via the USB Type-C (USB-C) connector.

Communication options such as USB-UART, USB DEVICE, and CAN are also included, including the well-established mikroBUS™ standard, two display options (graphical and character-based LCD), and several different DIP sockets. These sockets cover a wide range of 8-bit PIC MCUs, from the smallest PIC MCU devices with only eight up to forty pins. EasyPIC v8 is an integral part of the Mikroe ecosystem for rapid development. Natively supported by Mikroe software tools, it covers many aspects of prototyping and development thanks to a considerable number of different Click boards™ (over a thousand boards), the number of which is growing every day.

EasyPIC v8 horizontal image

Microcontroller Overview

MCU Card / MCU




MCU Memory (KB)


Silicon Vendor


Pin count


RAM (Bytes)


Used MCU Pins

mikroBUS™ mapper

SPI Chip Select
SPI Clock
Power Supply
PWM Signal
I2C Clock
I2C Data
Power Supply

Take a closer look


Adapter Click Schematic schematic

Step by step

Project assembly

EasyPIC v8 front image hardware assembly

Start by selecting your development board and Click board™. Begin with the EasyPIC v8 as your development board.

EasyPIC v8 front image hardware assembly
LTE IoT 5 Click front image hardware assembly
MCU DIP 28 hardware assembly
LTE IoT 5 Click complete accessories setup image hardware assembly
EasyPIC v8 28pin-DIP Access - upright/background hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
NECTO Compiler Selection Step Image hardware assembly
NECTO Output Selection Step Image hardware assembly
Necto image step 6 hardware assembly
Necto DIP image step 7 hardware assembly
Necto image step 8 hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Necto PreFlash Image hardware assembly

Track your results in real time

Application Output

After pressing the "FLASH" button on the left-side panel, it is necessary to open the UART terminal to display the achieved results. By clicking on the Tools icon in the right-hand panel, multiple different functions are displayed, among which is the UART Terminal. Click on the offered "UART Terminal" icon.

UART Application Output Step 1

Once the UART terminal is opened, the window takes on a new form. At the top of the tab are two buttons, one for adjusting the parameters of the UART terminal and the other for connecting the UART terminal. The tab's lower part is reserved for displaying the achieved results. Before connecting, the terminal has a Disconnected status, indicating that the terminal is not yet active. Before connecting, it is necessary to check the set parameters of the UART terminal. Click on the "OPTIONS" button.

UART Application Output Step 2

In the newly opened UART Terminal Options field, we check if the terminal settings are correct, such as the set port and the Baud rate of UART communication. If the data is not displayed properly, it is possible that the Baud rate value is not set correctly and needs to be adjusted to 115200. If all the parameters are set correctly, click on "CONFIGURE".

UART Application Output Step 3

The next step is to click on the "CONNECT" button, after which the terminal status changes from Disconnected to Connected in green, and the data is displayed in the Received data field.

UART Application Output Step 4

Software Support

Library Description

This library contains API for Adapter Click driver.

Key functions:

  • adapter_generic_write - This function writes data to the desired register.

  • adapter_generic_read - This function reads data from the desired register.

Open Source

Code example

This example can be found in NECTO Studio. Feel free to download the code, or you can copy the code below.

 * \file 
 * \brief Adapter Click example
 * # Description
 * Adapter click is a breakout board which simplifies connection of add-on boards. 
 * There are two ways of establishing connection: using male or female IDC10 connectors. 
 * Male header must be soldered on the top side of Adapter Click to connect the add-on board 
 * directly or via flat cable. Female header can be soldered either on the top, or the bottom 
 * side, depending on which one is more convenient in given circumstances.  
 * There are two jumpers for SPI/I2C selection and one for selection of power supply range.
 * The demo application is composed of two sections :
 * ## Application Init 
 * Initalizes I2C or SPI driver and makes an initial log.
 * ## Application Task  
 * This is an example that shows the use of the Adapter click board (SPI mode -  set as default). 
 * In I2C mode we are reading internal temperature from another device (THERMO 5 click board).
 * In SPI mode example we are writing "mikroElektronika" to SRAM click board, 
 * and then reading from the same memory location.
 * ## Additional Functions
 *   - float thermo5_read_inter_temp ( adapter_t *ctx ) - 
 *     @description Function reads measurements made by internal diode.
 *   - void sram_write_byte ( adapter_t *ctx, uint32_t reg_address, uint8_t write_data ) - 
 *     @description Function writes the 8-bit data to the target 24-bit register address of 23LC1024 chip.
 *   - uint8_t sram_read_byte ( adapter_t *ctx, uint32_t reg_address ) -
 *     @description Function reads the 8-bit data to the target 24-bit register address of 23LC1024 chip.
 * \author MikroE Team
// ------------------------------------------------------------------- INCLUDES

#include "board.h"
#include "log.h"
#include "adapter.h"

#define THERMO5_INTER_DIO_DATA_HI_BYTE          0x00
#define THERMO5_INTER_DIO_DATA_LO_BYTE          0x29

#define SRAM_24BIT_DATA                         0x00FFFFFF
#define SRAM_CMD_WRITE                          0x02
#define SRAM_CMD_READ                           0x03

// ------------------------------------------------------------------ VARIABLES

static adapter_t adapter;
static log_t logger;

char send_buffer[ 17 ] = { 'm', 'i', 'k', 'r', 'o', 'E', 'l', 'e', 'k', 't', 'r', 'o', 'n', 'i', 'k', 'a', ' ' };
char mem_data[ 17 ];
uint8_t n_cnt;

// ------------------------------------------------------ ADDITIONAL FUNCTIONS

float thermo5_read_inter_temp ( adapter_t *ctx )
    uint16_t inter_temp;
    uint8_t high_byte;
    uint8_t low_byte;
    float output;
    output = 0.0;
    adapter_generic_read ( ctx, THERMO5_INTER_DIO_DATA_HI_BYTE, &high_byte, 1 );
    adapter_generic_read ( ctx, THERMO5_INTER_DIO_DATA_LO_BYTE, &low_byte, 1 );

    inter_temp = high_byte;
    inter_temp <<= 8;
    inter_temp |= low_byte;
    inter_temp >>= 5;
    output = ( float )inter_temp;
    output *= 0.125;

    return output;

void sram_write_byte ( adapter_t *ctx, uint32_t reg_address, uint8_t write_data )
    uint8_t tx_buf[ 4 ];
    uint8_t rx_buf;
    reg_address &= SRAM_24BIT_DATA;
    tx_buf[ 0 ]  = ( uint8_t ) ( reg_address >> 16 );
    tx_buf[ 1 ]  = ( uint8_t ) ( reg_address >> 8 );
    tx_buf[ 2 ]  = ( uint8_t )   reg_address;
    tx_buf[ 3 ]  = write_data;
    adapter_generic_write( ctx, SRAM_CMD_WRITE, tx_buf, 4 );

uint8_t sram_read_byte ( adapter_t *ctx, uint32_t reg_address )
    uint8_t tx_buf[ 5 ];
    uint8_t rx_buf[ 5 ];
    uint8_t read_data;
    reg_address &= SRAM_24BIT_DATA;

    tx_buf[ 0 ] = SRAM_CMD_READ;
    tx_buf[ 1 ] = ( uint8_t ) ( reg_address >> 16 );
    tx_buf[ 2 ] = ( uint8_t ) ( reg_address >> 8 );
    tx_buf[ 3 ] = ( uint8_t )   reg_address;
    adapter_generic_transfer( ctx, tx_buf, 4, rx_buf, 1 );
    read_data = rx_buf[ 0 ];

    return read_data;

// ------------------------------------------------------ APPLICATION FUNCTIONS

void application_init ( void )
    log_cfg_t log_cfg;
    adapter_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.

    adapter_cfg_setup( &cfg );
    adapter_init( &adapter, &cfg );

void application_task ( void )
    float temp_value;

    if ( adapter.master_sel == ADAPTER_MASTER_SPI )
        log_printf( &logger, " Writing text :\r\n" );
        for ( n_cnt = 0; n_cnt < 16; n_cnt++ )
            sram_write_byte( &adapter, n_cnt, send_buffer[ n_cnt ] );
            Delay_ms ( 100 );
            log_printf( &logger, "%c", send_buffer[ n_cnt ] );
        log_printf( &logger, "\r\n" );
        log_printf( &logger, " Read text :\r\n" );
        for ( n_cnt = 0; n_cnt < 16; n_cnt++ )
            mem_data[ n_cnt ] = sram_read_byte( &adapter, n_cnt );
            Delay_ms ( 100 );
            log_printf( &logger, "%c", mem_data[ n_cnt ] );
        log_printf( &logger, "\r\n" );
        log_printf( &logger, "--------------------------\r\n" );
        Delay_ms ( 1000 );
    else if ( adapter.master_sel == ADAPTER_MASTER_I2C )
        temp_value = thermo5_read_inter_temp( &adapter );

        log_printf( &logger, " Thermo 5 internal temperature :  %.2f\r\n", temp_value );
        log_printf( &logger, "--------------------------\r\n" );
        Delay_ms( 2000 );

void main ( void )
    application_init( );

    for ( ; ; )
        application_task( );

// ------------------------------------------------------------------------ END

Additional Support