Hy David,
I had the same problem with my TmoteSky. After debugging with JTAG I noticed
that the problem in DS2411.init() is the reset() function.
command result_t DS2411.init() // >= 6000us
{
int retry = 5;
uint8_t id[8];
bzero( m_id, 8 );
call DS2411Pin.init();
while( retry-- > 0 )
{
int crc = 0;
if( reset() )
{
uint8_t* byte;
write_byte(0x33); //read rom
for( byte=id+7; byte!=id-1; byte-- )
crc = crc8_byte( crc, *byte=read_byte() );
if( crc == 0 )
{
memcpy( m_id, id, 8 );
return SUCCESS;
}
}
}
So I did a quick and dirty work-around:
command result_t DS2411.init() // >= 6000us
{
int retry = 5;
uint8_t id[8];
bzero( m_id, 8 );
call DS2411Pin.init();
while( retry-- > 0 )
{
int crc = 0;
//if( reset() )
reset();
if(1)
{
uint8_t* byte;
write_byte(0x33); //read rom
for( byte=id+7; byte!=id-1; byte-- )
crc = crc8_byte( crc, *byte=read_byte() );
if( crc == 0 )
{
memcpy( m_id, id, 8 );
return SUCCESS;
}
}
}
I know this is really poor, but now it works for me. BTW I just needed the
component to clearly identify my motes via the serial ID, so I did no
further debugging.
Regards,
OLE
-----Ursprüngliche Nachricht-----
Von: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Im Auftrag von Joe
Polastre
Gesendet: Mittwoch, 18. Juli 2007 16:37
An: David Henry
Cc: [email protected]
Betreff: Re: [Tinyos-help] Getting SerialID from tmoteinvent
No, the DS2411 is identical on Tmote Invent. The problem is probably
due to the timing in your contrib/ application. The DS2411 driver
provided with Boomerang has the correct 1-wire timing.
-Joe
On 7/18/07, David Henry <[EMAIL PROTECTED]> wrote:
>
>
> In the absence of nodeid's in the tmote world, I need to get something
else
> so I tried getting Serial ID instead.
> The SerialIDSend application in the contrib tree seemed a good place to
> start.
> Trouble is that the DS2411.init() function hangs for ever.
> Could it be that the 1 wire pin is connected somewhere else on the
> tmoteinvent?
>
> _______________________________________________
> Tinyos-help mailing list
> [email protected]
> https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>
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