[Owfs-developers] Writing to DS2413 Device with Python 3

[Dennis P. <da...@be...>]

I have the following python 3 code:

*fn='/mnt/1wire/3A.'+blower.id_+'/PIO.BYTE'**
**with open(fn,'wb') as fh:**
**   fh.write(onOff.to_bytes(1,byteorder=sys.byteorder))

*This produces the error:

*OSError: [Errno 22] Invalid argument

*The value of onOff will be either 1 or 0. In this particular case the
value is 1. The value of blower.id_ is 0BE14D000000. This is what that
OWFS directory contains:

*ls -l /mnt/1wire/3A.0BE14D000000*
total 0
-r--r--r-- 1 root root  16 Aug 19 21:17 address
-rw-rw-rw- 1 root root 256 Aug 19 21:17 alias
-r--r--r-- 1 root root   2 Aug 19 21:17 crc8
-r--r--r-- 1 root root   2 Aug 19 21:17 family
-r--r--r-- 1 root root  12 Aug 19 21:17 id
-r--r--r-- 1 root root  16 Aug 19 21:17 locator
-rw-rw-rw- 1 root root   1 Aug 19 21:17 PIO.A
-rw-rw-rw- 1 root root   3 Aug 19 21:17 PIO.ALL
-rw-rw-rw- 1 root root   1 Aug 19 21:17 PIO.B
-rw-rw-rw- 1 root root  12 Aug 19 21:17 PIO.BYTE
-r--r--r-- 1 root root  16 Aug 19 21:17 r_address
-r--r--r-- 1 root root  12 Aug 19 21:17 r_id
-r--r--r-- 1 root root  16 Aug 19 21:17 r_locator
-r--r--r-- 1 root root   1 Aug 19 21:17 sensed.A
-r--r--r-- 1 root root   3 Aug 19 21:17 sensed.ALL
-r--r--r-- 1 root root   1 Aug 19 21:17 sensed.B
-r--r--r-- 1 root root  12 Aug 19 21:17 sensed.BYTE
-r--r--r-- 1 root root  32 Aug 19 21:17 type

I cannot see anything wrong with the code or permissions and the error
is so generic I don't know to what it refers. Can someone spot what is
invalid or help me debug this problem? TIA.
****