main.c File Reference

Example main routine demonstrating the USART driver. More...

#include <util/delay.h>
#include "usart.h"

Go to the source code of this file.

Macros
#define	BUFFER_SIZE   4
#define	DECIMAL_NUM   255
#define	SHORT_DELAY   500
#define	LONG_DELAY   4000

Functions
int	main ()
	Main routine for the example application. More...

Variables
char	receive_buffer [BUFFER_SIZE]
	Character array to store the received data. More...

Detailed Description

Example main routine demonstrating the USART driver.

Copyright

Copyright © 2022 by Jason Duffy.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Author

Jason Duffy

Date

15th March 2022

See also

Definition in file main.c.

Macro Definition Documentation

BUFFER_SIZE

#define BUFFER_SIZE   4

Definition at line 36 of file main.c.

DECIMAL_NUM

#define DECIMAL_NUM   255

Definition at line 37 of file main.c.

SHORT_DELAY

#define SHORT_DELAY   500

Definition at line 38 of file main.c.

LONG_DELAY

#define LONG_DELAY   4000

Definition at line 39 of file main.c.

Function Documentation

main()

int main

(

)

Main routine for the example application.

Definition at line 51 of file main.c.

{
    // Setup and initialisation routines.
    init_usart();
    usart_print_string("USART Initialised\n\n\n");
 
    // Loop forever.
    while (1)
    {
        // ------- Echo demonstration. -------- // 
        usart_print_string("Type any three characters.\n");
        usart_read_string(receive_buffer, BUFFER_SIZE);
        usart_print_string("\nYou entered: ");
 
        for (uint8_t index = 0; index < (BUFFER_SIZE - 1); ++index)
        {
            //char data = receive_buffer[index];
            usart_print_char(receive_buffer[index]);
        }
        usart_print_string("\n\n\n");
 
 
        // -------- Data format demonstration. -------- // 
        usart_print_string("Lets start with the decimal number ");
        usart_print_byte(DECIMAL_NUM);
        _delay_ms(SHORT_DELAY);
        usart_print_string("\n");
        usart_print_string("In 8 bit binary format, that's: ");
        usart_print_binary_byte(DECIMAL_NUM);
        _delay_ms(SHORT_DELAY);
        usart_print_string("\n");
        usart_print_string("In hexadecimal format, that's: ");
        usart_print_hex_byte(DECIMAL_NUM);
        usart_print_string("\n\n\n");
        _delay_ms(LONG_DELAY);
    }
 
    return 0;
}

Variable Documentation

receive_buffer

char receive_buffer[BUFFER_SIZE]

Character array to store the received data.

Definition at line 45 of file main.c.