[Tinyos-devel] DS2411 Driver development

[JD]

Hi guys,

We are developping a driver for the ds2411 chip which provides the DS2411
unique serial number of the mote(OneWire protocole) for the wsn430 platform.
To do that, we've took the ds2401 driver (for mica2/iris platform) and we
did change the port/pin selection for the OneWire protocol to retrieve the
serial number (and a few other things). We actually use the Port24 for the
OneWire protocol which should be ok. Indeed we checked out the schematics
for the two chips (ds2401 & ds2411) and the timing datas looks alike. So We
wonder which other things might need to be adapted from ds2401 to ds2411.
For now, when we use the fonction .getId() provided by our driver in a basic
application (compiled then launched with wsim), we only get 255 values for
all the data structure fields (crc, serial, family_code). And the wsim.log
shows :
<code>
WSim 0.98cvs, copyright 2005, 2006, 2007, 2008
Laboratoire Citi, INRIA, INSA de Lyon
A. Fraboulet, G. Chelius, E. Fleury
wsim:pid:25419
wsim: 32 bits edition
mcu   : msp430
model : msp430f1611
  xin : 32768
  xt2 : 8000000
DS2411: crc is not valid, should be 0xc1
== Machine description
mcu   : msp430
model : msp430f1611
  xin : 32768
  xt2 : 8000000
device list:
  dev 00 : System Platform
  dev 01 : m25p80 flash memory
  dev 02 : Led display
  dev 03 : Led display
  dev 04 : Led display
  dev 05 : ds2411 serial number
  dev 06 : cc1100 radio device
  dev 07 : ptty serial I/O
==
msp430:basic_clock: speed tracer start
wsn430:devices: read data on radio while not in SPI mode ?
msp430:usart0: SPI data RX but not in receive enable state
msp430:intr: Interrupt 2 received but GIE = 0 (current PC = 0x4060
[34174978])
msp430:adc12: read [0x01a0] block not implemented
msp430:io: read byte at address 0x0008 at pc 0x45ae
msp430:io:     -- target unknown or block not implemented
</code>

Any ideas would be appreciated ...
Cheers
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