There are 2 ways to transfer a byte serially.
1)
Using serial port.
2)
To transfer data 1 bit at a time and control the
sequence of data and spaces in between them.
The data serialization is very easy in C. seriously.
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#include<reg51.h>
/*
* send some data through port
* say P2.1
* lsb should go first
*
*/
sbit p21 = P2^1;
sbit lsbA = ACC^0;
void main()
{
unsigned
char sendMePleasebyte = 0x55h;
unsigned
char i;
ACC
= sendMePleasebyte;
for(i
= 0;i<8;i++)
{
p21
= lsbA;
ACC
= ACC<<1;
}//end
of for loop
}// end of main
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#include<reg51.h>
/*
* recieve some data through port
* say P2.1
* lsb should come first
*
*/
sbit p21 = P2^1;
sbit lsbA = ACC^7;
void main()
{
unsigned
char i;
ACC
= sendMePleasebyte;
for(i
= 0;i<8;i++)
{
lsbA
= p21;
ACC
= ACC>>1;
}//end
of for loop
}// end of main
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