Hi,
I need to send / receive  binary data to / from PC through UART.
The problem is that the data is a struct containing asci (char) information as well as
"short int" "long int" ...
for example 
struct s_x
{
   char x[6];
   short y;
   long z;
}
char * x_msg = &s_x;
for (int i=0;i< sizeof(s_x);i++)
  send(s_x[i]); // this routine send byte through uart.
There are three problems: 
1. The size of the message is not the same as in PC.
2. The "short" here is 1 byte, and in PC it is 2 bytes.
3. The long z is aligned so ther is a hole in the middle (which on PC I solve with pragma
pack)

can anyone tell me how to solve this problem? I can solve it for each message apart but is
there a general solution ?
thanks,

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