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mikroSDK Library

RS232 click

Rating:

5

Author: MIKROE

Last Updated: 2018-06-14

Package Version: 1.0.0.1

mikroSDK Library: 1.0.0.0

Category: RS232

Downloaded: 8736 times

Followed by: 1 user

License: MIT license  

Simple example which demonstrates working with RS232 click board in mikroBUS form factor. This code demonstrates how to use uart library routines. Upon receiving data via RS232, MCU immediately sends it back to the sender.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

RS232 click

RS232 click

Native view of the RS232 click board.

View full image
RS232 click

RS232 click

Front and back view of the RS232 click board.

View full image

Library Description

This library provides generic functions for working with the Click board™.

Key functions:

  • void rs232_writeByte(uint8_t input) -  Writes a Single Byte.
  • uint8_t rs232_readByte() - Reads a Single Byte.
  • uint8_t ras232_byteReady() - Checks if a new byte has been received.

Examples Description

The application is composed of three sections:

  • System Initialization - Initializes UART module.
  • Application Initialization - Driver intialization.
  • Application Task - (code snippet) - Checks if new data byte has received in the RX buffer (ready for reading), and if ready than reads one byte from the RX buffer. In second case application task writes message data via UART.
void applicationTask()
{
 char tmp;
 uint8_t rdyFlag;

// RECEIVER - UART polling 

 rdyFlag = rs232_byteReady();

 if (1 == rdyFlag)
 {
 tmp = rs232_readByte();
 mikrobus_logWrite( &tmp, _LOG_BYTE );
 }

// TRANSMITER - TX each 2 sec
/*
 for (tmp = 0; tmp < 9; tmp++)
 {
 rs232_writeByte( MESSAGE_DATA[tmp] );
 mikrobus_logWrite( "MESSAGE SENT", _LOG_LINE );
 }
 Delay_ms(2000);
*/
}

The full application code, and ready to use projects can be found on our Libstock page.

Other mikroE Libraries used in the example:

  • UART

Additional notes and information

Depending on the development board you are using, you may need USB UART click,  USB UART 2 click or another one RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

 

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