How to use GridSeed GC335 on Linux\Raspbian? Is it working well or have problem?

Hello to everybody,

I am configuring two GridSeed GC335 5 chip on my RaspBerry Pi (that use RaspBian) but I have some doubt about it.

I have followed the procedure described in this post: https://bitcointalk.org/index.php?topic=494625.0

Now I am using CpuMiner to mine (at this time I am mining Franko, a Scrypt currency) and I execute it by performing the following command in my shell:

Code:

miner@raspberrypi ~/download/miner/usb-miner/software/cpuminer $ sudo ./minerd -F 600 -G /dev/ttyACM0  -o stratum+tcp://frk.coin-pool.org:3334 -u D4rkAng3l.Andrea -p MYPASSWORD
[2014-06-07 15:16:57] 0: GC3355 chip mining thread started, in SINGLE mode
[2014-06-07 15:16:57] Starting Stratum on stratum+tcp://frk.coin-pool.org:3334
[2014-06-07 15:16:57] 0: Open UART device /dev/ttyACM0
0: >>> LTC : 55aac000808080800000000001000000
0: >>> LTC : 55aac000c0c0c0c00500000001000000
0: >>> LTC : 55aaef020000000000000000000000000000000000000000
0: >>> LTC : 55aaef3020000000
0: >>> LTC : 55aa1f2817000000
0: >>> LTC : 55aaef000500e082
[2014-06-07 15:16:57] 0: Set GC3355 core frequency to 600Mhz
[2014-06-07 15:16:58] Stratum detected new block
[2014-06-07 15:16:58] 0: Dispatching new work to GC3355 LTC core
0: >>> LTC : 55aa1f2816000000
0: >>> LTC : 55aa1f2817000000
0: >>> LTC : 55aa1f00000000000000000000000000000000000000000000000000000000f8ff070000178cbe534c73a7f7ada04f4ab80a9b357a01c961b7b49d70fc9df94c852d8d0a0000000296d6f26ecf54f001e036f3739c170b5ed2f0aeef1c4ef39cae835a0bc0847ae2665f1e31b37289601d40a1d1b173e01801fac30fa6e60b05d9e266f693c17df4539310b71d00945700000000ffffffff12345678
0: <<< LTC : 5520000054489c9912345678
[2014-06-07 15:17:02] 0: Target: 000007fff8000000000000000000000000000000000000000000000000000000
[2014-06-07 15:17:02] 0:   Hash: 0000037fa8820bf3fc6c1dd7381f7cd29f1cb3e58c43a662f718a45bd39a768c
[2014-06-07 15:17:02] 0: Got nonce 54489c99, Hash <= Htarget!
[2014-06-07 15:17:02] accepted: 1/1 (100.00%), 0.00 khash/s (yay!!!)
0: <<< LTC : 552000003236ddcc12345678
[2014-06-07 15:17:19] 0: Target: 000007fff8000000000000000000000000000000000000000000000000000000
[2014-06-07 15:17:19] 0:   Hash: 00000301098fe3a5e6109f98c4d8d05a02802749aa5d865da3f8f9efe9b77e60
[2014-06-07 15:17:19] 0: Got nonce 3236ddcc, Hash <= Htarget!
[2014-06-07 15:17:19] accepted: 2/2 (100.00%), 0.00 khash/s (yay!!!)

As you can see it seems to work but why it print 0.00 khash/s

And why it print the string: 0: <<< LTC : 5520000054489c9912345678

This is not LTC but is another currency (Franko), why?

I think that it is working because if I go into my profile of the pool page I can read that now it is mining at 133.00 Kh/s (and with the passage of time, this value is increasing)

But my question is: I have 2 GridSeed. Am I mining with a single GridSeed or with booth?

Tnx
Andrea