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Author: MIKROE
Last Updated: 2024-10-31
Package Version: 2.1.0.7
mikroSDK Library: 2.0.0.0
Category: RS232
Downloaded: 123 times
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License: MIT license
RS232 3 Click is a compact add-on board representing a universal usable RS232 transceiver. This board features the SP3221E, a low-power RS232 transceiver from MaxLinear. The SP3221E uses an internal high-efficiency, charge-pump power supply and is compliant with EIA/TIA-232-F standards when powered by any of the mikroBUS™ power rails. The AUTO ON-LINE® feature allows the SP3221E to automatically Wake-Up from a Shutdown state when an RS232 cable is connected and a peripheral device is turned on. When not connected or not in use, the SP3221E will automatically shut down, drawing less supply current.
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DOWNLOAD LINK | RELATED COMPILER | CONTAINS |
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4965_rs232_3_click.zip [510.47KB] | mikroC AI for ARM GCC for ARM Clang for ARM mikroC AI for PIC mikroC AI for PIC32 XC32 GCC for RISC-V Clang for RISC-V mikroC AI for dsPIC XC16 |
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RS232 3 Click is a compact add-on board representing a universal usable RS232 transceiver. This board features the SP3221E, a low-power RS232 transceiver from MaxLinear. The SP3221E uses an internal high-efficiency, charge-pump power supply and is compliant with EIA/TIA-232-F standards when powered by any of the mikroBUS™ power rails. The AUTO ON-LINE® feature allows the SP3221E to automatically "Wake-Up" from a Shutdown state when an RS232 cable is connected and a peripheral device is turned on. When not connected or not in use, the SP3221E will automatically shut down, drawing less supply current.
We provide a library for the RS232 3 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.
This library contains API for RS232 3 Click driver.
rs2323_cfg_setup
Config Object Initialization function.
void rs2323_cfg_setup ( rs2323_cfg_t *cfg );
rs2323_init
Initialization function.
err_t rs2323_init ( rs2323_t *ctx, rs2323_cfg_t *cfg );
rs2323_generic_write
This function writes a desired number of data bytes by using UART serial interface.
err_t rs2323_generic_write ( rs2323_t *ctx, char *data_buf, uint16_t len );
rs2323_generic_read
This function reads a desired number of data bytes by using UART serial interface.
err_t rs2323_generic_read ( rs2323_t *ctx, char *data_buf, uint16_t max_len );
This example demonstrates the use of an RS232 3 Click board by showing the communication between the two Click board configured as a receiver and transmitter.
The demo application is composed of two sections :
Initializes the driver and logger and displays the selected application mode.
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
rs2323_cfg_t rs2323_cfg; /**< Click config object. */
/**
* 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.
rs2323_cfg_setup( &rs2323_cfg );
RS2323_MAP_MIKROBUS( rs2323_cfg, MIKROBUS_1 );
if ( UART_ERROR == rs2323_init( &rs2323, &rs2323_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
#ifdef DEMO_APP_TRANSMITTER
log_printf( &logger, " Application Mode: Transmitter\r\n" );
#else
log_printf( &logger, " Application Mode: Receiver\r\n" );
#endif
log_info( &logger, " Application Task " );
}
Depending on the selected mode, it reads all the received data or sends the desired message every 3 seconds.
void application_task ( void )
{
#ifdef DEMO_APP_TRANSMITTER
rs2323_generic_write( &rs2323, DEMO_TEXT_MESSAGE, strlen( DEMO_TEXT_MESSAGE ) );
log_printf( &logger, "%s", ( char * ) DEMO_TEXT_MESSAGE );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
#else
uint8_t rx_data;
if ( rs2323_generic_read( &rs2323, &rx_data, 1 ) > 0 )
{
log_printf( &logger, "%c", rx_data );
}
#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:
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.