relay4  2.1.0.0
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Relay 4 Click

Relay 4 Click is a compact add-on board with a general-purpose relay that any host MCU can control. This board features the J1031C3VDC, high-current single-pole double-throw (SPDT) signal relay from CIT Relay and Switch. Highly sensitive, the J1031C3VDC offers a low coil power consumption in a small, lightweight package with PC pin mounting. It comes with a dimension of 12.5x7.5x10 millimetre (LxWxH) and a 1C contact arrangement with a coil voltage of 3VDC, providing a switching voltage of 125VAC/60VDC maximum.

Click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Jan 2023.
  • Type : GPIO type

Software Support

We provide a library for the Relay 4 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 from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for Relay 4 Click driver.

Standard key functions :

Example key functions :

  • relay4_set_relay1_open This function sets the relay 1 to normally open state by setting the RL1 pin to low logic level.
  • relay4_set_relay1_close This function sets the relay 1 to normally close state by setting the RL1 pin to high logic level.
  • relay4_set_relay2_open This function sets the relay 2 to normally open state by setting the RL2 pin to low logic level.

Example Description

This example demonstrates the use of Relay 4 Click board by toggling the relays state.

The demo application is composed of two sections :

Application Init

Initializes the driver and logger.

void application_init ( void )
{
log_cfg_t log_cfg;
relay4_cfg_t relay4_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
relay4_cfg_setup( &relay4_cfg );
RELAY4_MAP_MIKROBUS( relay4_cfg, MIKROBUS_1 );
if ( DIGITAL_OUT_UNSUPPORTED_PIN == relay4_init( &relay4, &relay4_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Switches the relays 1 and 2 state every 5 seconds and displays the state on the USB UART.

void application_task ( void )
{
log_printf( &logger, " Relay 1 set to normally open state\r\n" );
log_printf( &logger, " Relay 2 set to normally close state\r\n\n" );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
log_printf( &logger, " Relay 1 set to normally close state\r\n" );
log_printf( &logger, " Relay 2 set to normally open state\r\n\n" );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.Relay4

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. UART terminal is available in all MikroElektronika compilers.


application_task
void application_task(void)
Definition: main.c:57
relay4_cfg_t
Relay 4 Click configuration object.
Definition: relay4.h:95
RELAY4_MAP_MIKROBUS
#define RELAY4_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: relay4.h:72
relay4_t
Relay 4 Click context object.
Definition: relay4.h:84
relay4_cfg_setup
void relay4_cfg_setup(relay4_cfg_t *cfg)
Relay 4 configuration object setup function.
application_init
void application_init(void)
Definition: main.c:27
relay4_set_relay1_close
void relay4_set_relay1_close(relay4_t *ctx)
Relay 4 set relay1 close function.
relay4_set_relay1_open
void relay4_set_relay1_open(relay4_t *ctx)
Relay 4 set relay1 open function.
relay4_set_relay2_open
void relay4_set_relay2_open(relay4_t *ctx)
Relay 4 set relay2 open function.
relay4_set_relay2_close
void relay4_set_relay2_close(relay4_t *ctx)
Relay 4 set relay2 close function.
relay4_init
err_t relay4_init(relay4_t *ctx, relay4_cfg_t *cfg)
Relay 4 initialization function.