[Tinyos-help] a problem about Tossim

[Philip Levis]

On May 1, 2007, at 6:58 AM, eamin_winfor at 126.com wrote:

> hi
>
> i have read the new tutorial (Lesson 11) about Tossim, but i meet a  
> problem.
>
> It seems that  event Timer.fired()  does't work.(i can see the  
> "Boot....",but i can't see"RadioCountToLedsC:...." as expected in  
> the "RadioCountToLeds")
>
> by the way, i use the tinyos2.0.1
>
> Any help is appreciate!
>

 From April 27:

----

The bug is in tos/chips/atm128/atm128_sim.h; this is the fix:

22,23c22,23
< #define _SFR_IO8(io_addr) _MMIO_BYTE((io_addr) + 0x20)
< #define _SFR_IO16(io_addr) _MMIO_WORD((io_addr) + 0x20)
---
 > #define _SFR_IO8(io_addr) _MMIO_BYTE((io_addr) )
 > #define _SFR_IO16(io_addr) _MMIO_WORD((io_addr) )


That is, the _SFR macros should not add 0x20. When they do so, then  
the timer hardware emulation breaks. The timer system becomes  
confused with the overflow settings of the timer, such that it thinks  
the counter does not reset on compare when it actually does.

----


Phil