it says in the usart_getbyte(); thing..

that msb is status, and lsb is the actual byte.

how can I seperate that? 

Basicly I have,

uint16 rxdata

rxdata = rx_GetByte();

the device outputs 8 pairs of bytes,

0000 01ff 01ff 01ff 01ff 01ff 01ff 01ff

I need to find the 0000's as thats a framing marker to tell me the start of the output, then each pair after is one channel of data

That is basic C-workmanship:

uint8 UpperByte,LowerByte;
uint16 USARTWord;

USARTWord = USART_GetByte();

UpperByte = (uint8)(USARTWord >> 8); // Shift right

LowerByte = (uint8)(USARTWord & 0x00ff); // Mask off upper bits

Happy coding

Bob

awesome, thanks :) 

now, just in case I need to.. how can I recombine 2 uint8's into a uint16? 

I may need to do this later. I dont know yet.

but I might as well ask how right now.. :> 

well, something like

USARTWord = (uint16)(UpperByte << 8) | (uint16)LowerByte;

Happy coding

Bob

Bob, should this -

USARTWord = (uint16)(UpperByte << 8) | (uint16)LowerByte;

be this -

USARTWord = (  ( uint16 ) UpperByte ) << 8) | ( uint16) LowerByte;

i.e. cast to uint16 first, then shift, vs shift 8 bits out of uint8, then cast ?

Regards, Dana.

Yes, Dana- You're right. Not good to write at late hours C programs life.

Bob

Just checked the precedence, could have written

USARTWord = (uint16)UpperByte << 8 | (uint16)LowerByte;

Bob