Achieve precise load control with LCA717 and TM4C129EKCPDT
Elevate your control: Unleash the power of solid-state relays!
Published Oct 18, 2023
Click board™
Relay2 Click
Dev. board
Fusion for Tiva v8
Compiler
NECTO Studio
MCU
TM4C129EKCPDT
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
Fusion for TIVA v8 is a development board specially designed for the needs of rapid development of embedded applications. It supports a wide range of microcontrollers, such as different 32-bit ARM® Cortex®-M based MCUs from Texas Instruments, regardless of their number of pins, and a broad set of unique functions, such as the first-ever embedded debugger/programmer over a WiFi network. 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, Fusion for TIVA v8 provides a fluid and immersive working experience, allowing access
anywhere and under any circumstances at any time. Each part of the Fusion for TIVA v8 development board contains the components necessary for the most efficient operation of the same board. An advanced integrated CODEGRIP programmer/debugger module offers many valuable programming/debugging options, including support for JTAG, SWD, and SWO Trace (Single Wire Output)), and seamless integration with the Mikroe software environment. Besides, it 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 HOST/DEVICE, CAN (on the MCU card, if supported), and Ethernet is also included. In addition, it also has the well-established mikroBUS™ standard, a standardized socket for the MCU card (SiBRAIN standard), and two display options for the TFT board line of products and character-based LCD. Fusion for TIVA 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.
Microcontroller Overview
MCU Card / MCU
Type
8th Generation
Architecture
ARM Cortex-M4
MCU Memory (KB)
512
Silicon Vendor
Texas Instruments
Pin count
128
RAM (Bytes)
262144
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 Fusion for Tiva v8 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
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
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
* \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 );
}
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
