rs232isolator2  2.0.0.0
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RS232 Isolator 2 click

RS232 Isolator 2 Click is a compact add-on board that contains a fully isolated transceiver used to provide secure and easy UART to RS232 conversion. This board features the ICL3221, a 3.3V powered RS232 transmitter/receiver that provides ±15kV ESD protection on its RS232 pins from Renesas. This Click board™ is characterized by an assured minimum data rate of 250kbps. It features an automatic power-down function and uses high-speed digital optocouplers to isolate the RS232 interface for 3.75kV isolation. It also possesses an LED indicator that indicates a valid RS232 signal at any of the receiver inputs. This Click board™ is suitable for isolation of RS232 signals, portable equipment, and where the low operational power consumption and even lower standby power consumption are critical.

click Product page


Click library

  • Author : Nenad Filipovic
  • Date : Jan 2021.
  • Type : UART type

Software Support

We provide a library for the Rs232Isolator2 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 Rs232Isolator2 Click driver.

Standard key functions :

Example key functions :

Example Description

This library contains API for RS 232 Isolator 2 Click driver. This example transmits/receives and processes data from RS 232 Isolator 2 clicks. The library initializes and defines the UART bus drivers to transmit or receive data.

The demo application is composed of two sections :

Application Init

Initializes driver and wake-up module.

void application_init ( void ) {
log_cfg_t log_cfg;
rs232isolator2_cfg_t rs232isolator2_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
rs232isolator2_cfg_setup( &rs232isolator2_cfg );
RS232ISOLATOR2_MAP_MIKROBUS( rs232isolator2_cfg, MIKROBUS_1 );
err_t init_flag = rs232isolator2_init( &rs232isolator2, &rs232isolator2_cfg );
if ( init_flag == UART_ERROR ) {
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
app_buf_len = 0;
app_buf_cnt = 0;
log_info( &logger, " Application Task " );
#ifdef TRANSMITTER
log_printf( &logger, " Send data: \r\n" );
log_printf( &logger, " mikroE \r\n" );
log_printf( &logger, "------------------\r\n" );
log_printf( &logger, " Transmit data \r\n" );
Delay_ms( 1000 );
#endif
#ifdef RECIEVER
log_printf( &logger, " Receive data \r\n" );
Delay_ms( 2000 );
#endif
log_printf( &logger, "------------------\r\n" );
}

Application Task

Transmitter/Receiver task depend on uncommented code. Receiver logging each received byte to the UART for data logging, while transmitted send messages every 2 seconds.

void application_task ( void ) {
#ifdef TRANSMITTER
log_printf( &logger, "%s", demo_message );
Delay_ms( 2000 );
log_printf( &logger, "------------------\r\n" );
#endif
#ifdef RECIEVER
rs232isolator2_process( );
if ( app_buf_len > 0 ) {
log_printf( &logger, "%s", app_buf );
rs232isolator2_clear_app_buf( );
}
#endif
}

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.Rs232Isolator2

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.


rs232isolator2_cfg_t
RS232 Isolator 2 Click configuration object.
Definition: rs232isolator2.h:105
rs232isolator2_cfg_setup
void rs232isolator2_cfg_setup(rs232isolator2_cfg_t *cfg)
RS232 Isolator 2 configuration object setup function.
rs232isolator2_send_data
err_t rs232isolator2_send_data(rs232isolator2_t *ctx, char *tx_data)
RS232 Isolator 2 data writing function.
application_task
void application_task(void)
Definition: main.c:120
rs232isolator2_generic_read
err_t rs232isolator2_generic_read(rs232isolator2_t *ctx, char *data_buf, uint16_t max_len)
RS232 Isolator 2 data reading function.
rs232isolator2_t
RS232 Isolator 2 Click context object.
Definition: rs232isolator2.h:88
application_init
void application_init(void)
Definition: main.c:67
rs232isolator2_init
err_t rs232isolator2_init(rs232isolator2_t *ctx, rs232isolator2_cfg_t *cfg)
RS232 Isolator 2 initialization function.
RS232ISOLATOR2_MAP_MIKROBUS
#define RS232ISOLATOR2_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: rs232isolator2.h:77
demo_message
unsigned char demo_message[9]
Definition: main.c:45
rs232isolator2_generic_write
err_t rs232isolator2_generic_write(rs232isolator2_t *ctx, char *data_buf, uint16_t len)
RS232 Isolator 2 data writing function.