read data from serial port

[amitpatel22]

Hi...

I want to write and read hex data from serial port..
I have successfully opened serial port and also able to write hex data on serial port,but when i try to read that data it only reads first seven bits and ignore the last bit..

E.g.

unsigned char a[2] = {0x87,0x0D};
unsigned char b[2] = {0x7F,0x0D};
unsigned char c;
 
write(fd,a or b,sizeof(a or b));
read(fd,&c,sizeof(c));

unsigned char a[2] = {0x87,0x0D};
unsigned char b[2] = {0x7F,0x0D};
unsigned char c;

write(fd,a or b,sizeof(a or b));
read(fd,&c,sizeof(c));

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In case of read b,it gives perfect answer hex-0x7F dec-127 bin-01111111
In case of read a,it ignores MSB bit hex-0x87 dec-128 bin-10000000

So my problem is how to read hex data that gives me perfect output without ignoring MSB bit.

Waiting for quick reply..

Thanks..