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mikroSDK Library

OSD click

Rating:

0

Author: MIKROE

Last Updated: 2019-07-30

Package Version: 1.0.0.1

mikroSDK Library: 1.0.0.0

Category: OSD

Downloaded: 8387 times

Followed by: 1 user

License: MIT license  

This is a sample program which demonstrates the use of OSD click.
Program shows the time and date in corners of the screen and enable you to set the time and date, using the OSD menu.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

OSD click

OSD click

Front and back side appearance of the OSD click Board.

View full image

Library Description

The library covers all the necessary functions to control OSD click board. The library performs the communication with the device via SPI protocol by writing to registers and by reading from registers.

Key functions:

  • void osd_writeByte( uint8_t regAddress, uint8_t writeData ) - Write the byte of data function.
  • uint8_t osd_readByte( uint8_t regAddress ) - Read the byte of data function.
  • void osd_writeCharacter( uint8_t linePos, uint8_t rowPos, uint8_t symbol ) - Write a character by position function.

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes SPI and LOG structures sets AN, INT and PWM pins as input, set RST and CS pins as output and start to write log.
  • Application Initialization - Initialization driver enables - SPI, the set default configuration, clears all character places, also write log.
  • Application Task - This is an example which demonstrates the use of OSD Click board. In this example, we write text on the screen, write character per 1 second in the first, seventh and fifteenth row of the screen.
void applicationTask()
{
    for ( cnt = 0; cnt < 30; cnt++ )
    {
        if( HEADER_TEXT[ cnt ] != ' ' )
        {
            osd_writeCharacter( 1, cnt, HEADER_TEXT[ cnt ] );
        }

        if( MESSAGE_TEXT[ cnt ] != ' ' )
        {
            osd_writeCharacter( 7, cnt, MESSAGE_TEXT[ cnt ] );
        }

        if( FOOTER_TEXT[ cnt ] != ' ' )
        {
            osd_writeCharacter( 14, cnt, FOOTER_TEXT[ cnt ] );
        }

        Delay_1sec();
    }

    osd_clearsCharPlaces( 0, 0, 16, 30 );
    Delay_1sec();
}

Other mikroE Libraries used in the example:

  • SPI
  • UART

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB UART 2 click or 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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