relay7  2.1.0.0
Main Page

Relay 7 Click

Relay 7 Click is a compact add-on board for precise load control and monitoring applications. This board features four CRR05-1As, a CRR series reed relay from Standex Electronics, well-known for its ultra-miniature SMD design and high insulation resistance. These four relays each have four load connection terminals and orange LED indicators that signal the operational status, ensuring clear and immediate feedback. These relays are highly reliable and come in a rugged thermoset over-molded package with ceramic substrate and a typical 1013Ω insulation resistance. They support a coil voltage of 5VDC and switching capabilities up to 170VDC/0.5A/10W. It is ideally suited for test and measurement (ATE) equipment, instrumentation, and telecommunications.

Click Product page


Click library

  • Author : Nenad Filipovic
  • Date : Nov 2023.
  • Type : I2C type

Software Support

We provide a library for the Relay 7 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 7 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of the Relay 7 Click board by toggling the relay state.

The demo application is composed of two sections :

Application Init

Initialization of I2C module and log UART. After driver initialization, the app executes a default configuration.

void application_init ( void )
{
log_cfg_t log_cfg;
relay7_cfg_t relay7_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
relay7_cfg_setup( &relay7_cfg );
RELAY7_MAP_MIKROBUS( relay7_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == relay7_init( &relay7, &relay7_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( RELAY7_ERROR == relay7_default_cfg ( &relay7 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

The demo application toggles the state of all relays every 5 seconds. The results are sent to the UART terminal, where you can monitor their changes.

void application_task ( void )
{
for ( uint8_t relay_sel = RELAY7_SEL_REL1; relay_sel <= RELAY7_SEL_REL4; relay_sel++ )
{
if ( RELAY7_OK == relay7_set_relay( &relay7, relay_sel, relay_state ) )
{
log_printf( &logger, " Relay %d ", ( uint16_t ) relay_sel );
if ( RELAY7_STATE_OPEN == relay_state )
{
log_printf( &logger, " normally open state\r\n" );
}
else
{
log_printf( &logger, " normally close state\r\n" );
}
}
Delay_ms ( 1000 );
}
relay_state = ~relay_state;
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.Relay7

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.


RELAY7_OK
@ RELAY7_OK
Definition: relay7.h:201
RELAY7_SEL_REL4
#define RELAY7_SEL_REL4
Definition: relay7.h:121
relay7_reset_device
void relay7_reset_device(relay7_t *ctx)
Relay 7 reset device function.
relay7_cfg_setup
void relay7_cfg_setup(relay7_cfg_t *cfg)
Relay 7 configuration object setup function.
application_task
void application_task(void)
Definition: main.c:66
relay7_relay_state_t
relay7_relay_state_t
Relay 7 Click relay state value data.
Definition: relay7.h:211
relay7_init
err_t relay7_init(relay7_t *ctx, relay7_cfg_t *cfg)
Relay 7 initialization function.
RELAY7_STATE_OPEN
@ RELAY7_STATE_OPEN
Definition: relay7.h:212
relay7_t
Relay 7 Click context object.
Definition: relay7.h:163
relay7_cfg_t
Relay 7 Click configuration object.
Definition: relay7.h:183
RELAY7_MAP_MIKROBUS
#define RELAY7_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: relay7.h:149
relay7_get_interrupt
uint8_t relay7_get_interrupt(relay7_t *ctx)
Relay 7 get interrupt function.
application_init
void application_init(void)
Definition: main.c:30
relay7_set_relay
err_t relay7_set_relay(relay7_t *ctx, uint8_t relay_sel, relay7_relay_state_t state)
Relay 7 set relay function.
RELAY7_ERROR
@ RELAY7_ERROR
Definition: relay7.h:202
relay7_default_cfg
err_t relay7_default_cfg(relay7_t *ctx)
Relay 7 default configuration function.
RELAY7_SEL_REL1
#define RELAY7_SEL_REL1
Relay 7 pin bitmask data values.
Definition: relay7.h:118