Make a half duplex IR data modem – using obstruction sensors

[Harsh Sharma]

I need to make this project . Kindly help and tell me how to proceed.

[AJISH ALFRED]

Hi Harsha,

Kindly share maximum details about your project including circuit diagram and working details.

[Harsh Sharma]

I am planning to make modem prototype using 2 obstacle sensors. One I will be using as receiver and other one as transmitter

 PORTA- ADC

 

  Transmitter code-

DDRA|=0xff;

while(1)

{

sbi(PORTA,0);

_delay_ms(1000);

cdbi(PORTA,0);

_delay_ms(1000);

}

 

RECEIVER

int  main(void)
    {
        int c=0;
        uart_init(UART_BAUD_SELECT(9600,F_CPU));
        sei();
        uart_puts(“initialized”);
        DDRA|=0x00;
        while(1)
        {
            c=bit_is_clear(PINA,0);
            if(c==1)
                {
                    uart_putc(‘A’);
                    uart_puts(“hello”);
                }    
            else
                {
                    uart_putc(‘B’);
                }
        }
    
    }

 

 

Is it right?

[Author]

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