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serial communication in AT89c51

Harinath Gupta

hello sir i have 8 bit data which is coming from ADC0808 this is taken into the AT89c51 micro controller via port P0 now i want to transmit this serially so i have to place data into SBUF (for this please send the C code)....

and after that i received some data serially into SBUF now i ahave to show this data on port P2( for this please send the C code)

i used this code:

SBUF=P0    /// to transfer port dat into SBUF
P2=SBUF // to transfer SBUF data into port 2<pre/>

  but it is not working

Parents
  • 0 in reply to Andy Neil

    <b.sir

    here i am sending the detailed code see it and tell the correction

    #include<reg51.h>
void serial_init()
{
TOMD=0x20;
SCON=0x50;
TH1=0xfd;
TR1=1;
}
void main(void)
{
unsigned  char var;
serial_init();
while(1)
{
while(!RI);
RI=0;
ACC=SBUF;
val=ACC;
SBUF=val;
while(!TI);
TI=0;
}
}

    but i am not able to send data correctly into SBUF and not extracting data from SBUF into any other regioster

    please help me in code i tried in so many fashions but failed

Reply
  • 0 in reply to Andy Neil

    <b.sir

    here i am sending the detailed code see it and tell the correction

    #include<reg51.h>
void serial_init()
{
TOMD=0x20;
SCON=0x50;
TH1=0xfd;
TR1=1;
}
void main(void)
{
unsigned  char var;
serial_init();
while(1)
{
while(!RI);
RI=0;
ACC=SBUF;
val=ACC;
SBUF=val;
while(!TI);
TI=0;
}
}

    but i am not able to send data correctly into SBUF and not extracting data from SBUF into any other regioster

    please help me in code i tried in so many fashions but failed

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