Quickly identify and troubleshoot issues on the mikroBUS™ lines with STM32F031K6
Real-time mikroBUS™ pin monitoring solution featuring a 2x6 LED array and SI2310 MOSFETs
Published Feb 05, 2025
Click board™
Tester 2 Click
Dev. board
Nucleo 32 with STM32F031K6 MCU
Compiler
NECTO Studio
MCU
STM32F031K6
Track mikroBUS™ pin logic levels in real time with visual feedback, perfect for debugging and troubleshooting embedded systems
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Hardware Overview
How does it work?
Tester 2 Click is a diagnostic Click board™ designed to provide immediate and reliable visual feedback on the logic levels of mikroBUS™ pins. It features a 2x6 array of orange LEDs, each connected to a specific mikroBUS™ pin, allowing developers to instantly determine whether the logic state on a pin is HIGH or LOW. For easy identification, each LED is clearly labeled with the name of the corresponding pin, such as PWM or AN. Additionally, the board includes two LEDs dedicated to monitoring the mikroBUS™ power rails, signaling the presence of +3.3V and +5V voltages. This functionality eliminates the need for additional diagnostic tools or complex measurement setups, saving developers valuable time and effort during debugging and troubleshooting. Using Tester 2 Click is straightforward. Once the board is inserted into the mikroBUS™ socket, it becomes fully operational without requiring additional configuration or setup. The power indication LEDs immediately signal the
presence of voltage on the mikroBUS™ power rails, while the rest of the LED array lights up based on the logic states of their respective pins. The simplicity of the design, which uses LEDs and SI2310 N-channel MOSFETs for controlling their operation, ensures reliability and ease of use, making it an indispensable tool for developers working with mikroBUS™ systems. The board is built to be fully compatible with the standardized mikroBUS™ connector, a key feature of MIKROE development systems. This connector ensures that all commonly used interfaces, including SPI, I2C, UART, PWM, analog input (AN), and various GPIO pins such as CS, INT, and RST, are consistently mapped across all platforms equipped with mikroBUS™ sockets. It also incorporates two power supply rails, +3.3V, and +5V, allowing compatibility between different systems and a wide range of Click boards™. This standardization means that Tester 2 Click can be used across various platforms without requiring hardware
modifications, ensuring flexibility and ease of integration for developers. A notable addition to this board is a switch that activates the ClickID feature, allowing the signal from ClickID to be used on the CS pin instead of the standard SPI Chip Select functionality. Additionally, the board includes LP CUT traces on its backside, which are designed to support low-power operation. By severing these traces, the power supply to the LEDs and the ClickID section is disconnected, drastically reducing power consumption and enabling efficient operation, especially in applications where energy efficiency is critical. This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can 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.
Features overview
Development board
Nucleo 32 with STM32F031K6 MCU board provides an affordable and flexible platform for experimenting with STM32 microcontrollers in 32-pin packages. Featuring Arduino™ Nano connectivity, it allows easy expansion with specialized shields, while being mbed-enabled for seamless integration with online resources. The
board includes an on-board ST-LINK/V2-1 debugger/programmer, supporting USB reenumeration with three interfaces: Virtual Com port, mass storage, and debug port. It offers a flexible power supply through either USB VBUS or an external source. Additionally, it includes three LEDs (LD1 for USB communication, LD2 for power,
and LD3 as a user LED) and a reset push button. The STM32 Nucleo-32 board is supported by various Integrated Development Environments (IDEs) such as IAR™, Keil®, and GCC-based IDEs like AC6 SW4STM32, making it a versatile tool for developers.
Microcontroller Overview
MCU Card / MCU
Architecture
ARM Cortex-M0
MCU Memory (KB)
32
Silicon Vendor
STMicroelectronics
Pin count
32
RAM (Bytes)
4096
You complete me!
Accessories
Click Shield for Nucleo-32 is the perfect way to expand your development board's functionalities with STM32 Nucleo-32 pinout. The Click Shield for Nucleo-32 provides two mikroBUS™ sockets to add any functionality from our ever-growing range of Click boards™. We are fully stocked with everything, from sensors and WiFi transceivers to motor control and audio amplifiers. The Click Shield for Nucleo-32 is compatible with the STM32 Nucleo-32 board, providing an affordable and flexible way for users to try out new ideas and quickly create prototypes with any STM32 microcontrollers, choosing from the various combinations of performance, power consumption, and features. The STM32 Nucleo-32 boards do not require any separate probe as they integrate the ST-LINK/V2-1 debugger/programmer and come with the STM32 comprehensive software HAL library and various packaged software examples. This development platform provides users with an effortless and common way to combine the STM32 Nucleo-32 footprint compatible board with their favorite Click boards™ in their upcoming projects.
Used MCU Pins
mikroBUS™ mapper
Take a closer look
Click board™ Schematic
Step by step
Project assembly
Start by selecting your development board and Click board™. Begin with the Nucleo 32 with STM32F031K6 MCU as your development board.
Track your results in real time
Application Output
1. Application Output - In Debug mode, the 'Application Output' window enables real-time data monitoring, offering direct insight into execution results. Ensure proper data display by configuring the environment correctly using the provided tutorial.
2. UART Terminal - Use the UART Terminal to monitor data transmission via a USB to UART converter, allowing direct communication between the Click board™ and your development system. Configure the baud rate and other serial settings according to your project's requirements to ensure proper functionality. For step-by-step setup instructions, refer to the provided tutorial.
3. Plot Output - The Plot feature offers a powerful way to visualize real-time sensor data, enabling trend analysis, debugging, and comparison of multiple data points. To set it up correctly, follow the provided tutorial, which includes a step-by-step example of using the Plot feature to display Click board™ readings. To use the Plot feature in your code, use the function: plot(*insert_graph_name*, variable_name);. This is a general format, and it is up to the user to replace 'insert_graph_name' with the actual graph name and 'variable_name' with the parameter to be displayed.
Software Support
Library Description
Tester 2 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.
Example Description
This example demonstrates the use of Tester 2 Click board by controlling all LEDs on the Click board together and in sequential pin toggling with different delays.
Key functions:
tester2_cfg_setup- Config Object Initialization function.tester2_init- Initialization function.tester2_toggle_all- This function toggles all mikroBUS pins together a desired number of times with the selected delay between each toggle.tester2_toggle_seq- This function toggles all mikroBUS pins one by one with the selected delay between each toggle.
Application Init
Initializes the driver and logger.
Application Task
Toggles all pins together 5 times with a 500ms delay between each toggle, then toggles each pin sequentially with a 300ms delay between toggling each pin.
Open Source
Code example
The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.
/*!
* @file main.c
* @brief Tester 2 Click Example.
*
* # Description
* This example demonstrates the use of Tester 2 Click board by controlling all
* LEDs on the Click board together and in sequential pin toggling with different delays.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initializes the driver and logger.
*
* ## Application Task
* Toggles all pins together 5 times with a 500ms delay between each toggle, then toggles
* each pin sequentially with a 300ms delay between toggling each pin.
*
* @author Stefan Filipovic
*
*/
#include "board.h"
#include "log.h"
#include "tester2.h"
static tester2_t tester2; /**< Tester 2 Click driver object. */
static log_t logger; /**< Logger object. */
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
tester2_cfg_t tester2_cfg; /**< Click config object. */
/**
* 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.
tester2_cfg_setup( &tester2_cfg );
TESTER2_MAP_MIKROBUS( tester2_cfg, MIKROBUS_1 );
if ( DIGITAL_OUT_UNSUPPORTED_PIN == tester2_init( &tester2, &tester2_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}
void application_task ( void )
{
log_printf( &logger, " Toggling all pins together 5 times with 500ms delay\r\n\n" );
tester2_toggle_all ( &tester2, 5, 500 );
log_printf( &logger, " Toggling all pins sequentially with 300ms delay\r\n\n" );
tester2_toggle_seq ( &tester2, 300 );
}
int main ( void )
{
/* Do not remove this line or clock might not be set correctly. */
#ifdef PREINIT_SUPPORTED
preinit();
#endif
application_init( );
for ( ; ; )
{
application_task( );
}
return 0;
}
// ------------------------------------------------------------------------ END
Additional Support
Resources
Category:Proto
