USB resistor on wrong line

2008-01-26T22:24:35+02:00

Nov 15 20:58:58 redsky kernel: [ 2225.116000] usb 2-1: new full speed USB device using ohci_hcd and address 45

I think you connected the 2.2k resistor for High/Low Speed USB to the wrong line . It must be connected to D-.

Statistics: Posted by HIND — Sat Jan 26, 2008 10:24 pm

Fixed.

2007-11-16T11:01:48+02:00

D-/D+ weren't clamped to a high enough voltage.

Statistics: Posted by conail — Fri Nov 16, 2007 11:01 am

Easylogger not accepting address

2007-11-16T01:48:13+02:00

Hi,

When connecting the Easylogger, in Windows a dialog tells that the device has malfunctioned and in Linux produces the log entries attached below.

The fuses seem OK and the recording indicator works fine.

I'm using the schematic provided in the pdf with a t45, but am using LEDs in place of Zeners.

Is there something obvious that I've missed?

Thanks,
Conail

Log output:
...
Nov 15 20:58:58 redsky kernel: [ 2225.116000] usb 2-1: new full speed USB device using ohci_hcd and address 45
Nov 15 20:58:59 redsky kernel: [ 2225.296000] usb 2-1: device descriptor read/64, error -62
Nov 15 20:58:59 redsky kernel: [ 2225.580000] usb 2-1: device descriptor read/64, error -62
Nov 15 20:58:59 redsky kernel: [ 2225.860000] usb 2-1: new full speed USB device using ohci_hcd and address 46
Nov 15 20:59:00 redsky kernel: [ 2226.268000] usb 2-1: device not accepting address 46, error -62
Nov 15 20:59:00 redsky kernel: [ 2226.444000 ] usb 2-1: new full speed USB device using ohci_hcd and address 47
Nov 15 20:59:00 redsky kernel: [ 2226.852000] usb 2-1: device not accepting address 47, error -62
...

Statistics: Posted by conail — Fri Nov 16, 2007 1:48 am

Objective Development Forums

USB resistor on wrong line

Fixed.

Easylogger not accepting address