Achieve precise load control with LCA717 and STM32F031K6
Elevate your control: Unleash the power of solid-state relays!
Published Oct 01, 2024
Click board™
Relay2 Click
Dev Board
Nucleo 32 with STM32F031K6 MCU
Compiler
NECTO Studio
MCU
STM32F031K6
Our solid-state relay solution is designed to enhance your electrical control with efficiency and reliability, making it ideal for a wide range of applications
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Hardware Overview
How does it work?
Relay 2 Click is based on two LCA717s, single-pole, normally open OptoMos relays from IXYSIC. These SSRs are normally open, meaning no current flows through the output terminals if no power is applied at the input - the output stage is in an open circuit state. The LCA717 itself is built with the patented OptoMOS® technology, which allows for a reasonably fast switching time to be achieved by the output stage. The input stage of the device is comprised of a highly efficient GaAIAs infrared
LED, used to drive the photovoltaic elements of the SSR. The output stage has two N-type MOSFETs, which allow both DC and AC to be switched to the output stage. The input and output stages are galvanically isolated with up to 3.5kV of breakdown voltage. Relay 2 Click uses two GPIO pins to allow the host MCU to control the relays. Those pins are labeled RL1 and RL2, and the relays are activated by writing the High logic on those pins. At the same time the relays are
activated, two LEDs (REL1, REL2) will indicate the relays states. The load can be connected to Relay 2 Click over the screw terminals. This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing 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
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 via Debug Mode
1. Once the code example is loaded, pressing the "DEBUG" button initiates the build process, programs it on the created setup, and enters Debug mode.
2. After the programming is completed, a header with buttons for various actions within the IDE becomes visible. Clicking the green "PLAY" button starts reading the results achieved with the Click board™. The achieved results are displayed in the Application Output tab.
Software Support
Library Description
This library contains API for Relay2 Click driver.
Key functions:
relay2_relay2Control- Controls the Relay 2 pinrelay2_relay1Control- Controls the Relay 1 pin
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 Relay 2 Click example
*
* # Description
* The application is composed of three sections :
*
* ## Application Init
* Initializes driver.
*
* ## Application Task
* Turns relays on and off.
*
*
* \author MikroE Team
*
*/
// ------------------------------------------------------------------- INCLUDES
#include "board.h"
#include "log.h"
#include "relay2.h"
// ------------------------------------------------------------------ VARIABLES
static relay2_t relay2;
static log_t logger;
// ------------------------------------------------------ APPLICATION FUNCTIONS
void application_init ( void )
{
log_cfg_t log_cfg;
relay2_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.
relay2_cfg_setup( &cfg );
RELAY2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
relay2_init( &relay2, &cfg );
log_info( &logger, "---- App Init Done ----" );
}
void application_task ( void )
{
relay2_relay2_control(&relay2, 1 );
relay2_relay1_control(&relay2, 1 );
Delay_ms( 1000 );
relay2_relay2_control(&relay2, 0 );
relay2_relay1_control(&relay2, 0 );
Delay_ms( 1000 );
}
void main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
}
// ------------------------------------------------------------------------ END
