nick wrote:Yes this is correct. It appears your device is not responding to communication. Did you install the latest Prolific USB driver that I linked you to?
Yes I did as you may see from the system profile below reported
USB-Serial Controller:
Product ID: 0x2303
Vendor ID: 0x067b (Prolific Technology, Inc.)
Version: 3.00
Speed: Up to 12 Mb/sec
Manufacturer: Prolific Technology Inc.
Location ID: 0x04100000 / 4
Current Available (mA): 500
Current Required (mA): 100
I have run again the test and this is what I got
Last login: Wed Sep 9 12:23:32 on ttys000
MacBook-Pro:~ iMarco$ cd Desktop
MacBook-Pro:Desktop iMarco$ chmod u+x vyper
MacBook-Pro:Desktop iMarco$ ls /dev/tty.*
/dev/tty.Bluetooth-Incoming-Port /dev/tty.usbserial
/dev/tty.Bluetooth-Modem
MacBook-Pro:Desktop iMarco$ ./vyper /dev/tty.usbserial
DATETIME 2015-09-09T10:32:43Z (1441794763)
VERSION 0.5.0-devel (61e9847196b4e7f4e2c80e47dd6cd7070c9c4418)
DEVICE=/dev/tty.usbserial
suunto_vyper_device_open
INFO: Open: name=/dev/tty.usbserial
INFO: Configure: baudrate=2400, databits=8, parity=2, stopbits=1, flowcontrol=0
INFO: Timeout: value=1000
INFO: DTR: value=1
INFO: Sleep: value=100
INFO: Flush: queue=3, input=0, output=0
dc_device_foreach
INFO: Sleep: value=500
INFO: RTS: value=1
INFO: Write: size=5, data=0500161407
INFO: Sleep: value=200
INFO: Flush: queue=1, input=0, output=0
INFO: RTS: value=0
INFO: Read: size=0, data=
ERROR: Failed to receive the answer. [in ../../source/src/suunto_vyper.c:231 (suunto_vyper_transfer)]
../../source/examples/suunto_vyper_test.c:51: Cannot read dives.
suunto_vyper_device_open
INFO: Open: name=/dev/tty.usbserial
INFO: Configure: baudrate=2400, databits=8, parity=2, stopbits=1, flowcontrol=0
INFO: Timeout: value=1000
INFO: DTR: value=1
INFO: Sleep: value=100
INFO: Flush: queue=3, input=0, output=0
dc_device_dump
INFO: Sleep: value=500
INFO: RTS: value=1
INFO: Write: size=5, data=0500002025
INFO: Sleep: value=200
INFO: Flush: queue=1, input=0, output=0
INFO: RTS: value=0
INFO: Read: size=0, data=
ERROR: Failed to receive the answer. [in ../../source/src/suunto_vyper.c:231 (suunto_vyper_transfer)]
../../source/examples/suunto_vyper_test.c:94: Cannot read memory.
SUMMARY
-------
test_dump_sdm: Timeout
test_dump_memory: Timeout
MacBook-Pro:Desktop iMarco$
It looks like the same as before, isn't it? where am I mistaking?
With the third party USB driver no luck at all. Every time I try to install, after rebooting I have a message saying that the file is corrupt and can not be used (maybe because I am on Yosemite and that driver was for Lion?).
It sounds like you need to register your license, by double-clicking on it or drag/dropping it on to MacDive.
Success!!

I managed to register it. All dives previously saved are not correctly imported and shown on macdive
Thanks for help!