Carl Denk wrote :

> Now the only interrupt I'm using is the high USART receive, I was 
> considering adding USART transmit, though most of the examples leave 
> that at polled. The ADC conversion done also could be an interrupt. I 
> could make either or both high interrupts, but don't know whether that's 
> the better way to handle it.

A matter of taste... :-)

> By saving at interrupts, I now have the string array and index variables 
> declared (global) before and outside any functions. I do not have  any 
> compiler managed resources saved/unsaved.

Compiler ?
So this is *not* in assembler ??

> In the receive interupt, I do have a receive buffer where the routine
 > looks for the first incoming character of the RS-485 command, and
 > then starts filling the array (7 characters),

Not in the *same* interrupt call, right ?

Anyway, I'll leave it here, since this seems to be in something
else then assembler...

Jan-Erik.

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