PropellerCLip Clone, not working

Ale

Hello,

I made myself a PropellerClip clone (not sold in my country) with a FT232RL. When plugged, the RX led flashes several times, 6 or so, but the device is "not known" to windows xp.
Drivers are of course already installed, and wiring was checked.

On linux (krnl 2.6.17.11) , the device does not show up with the lsusb command, and /var/log/messages shows the following:

Jun 18 15:44:16 Windkraftanlage kernel: [noparse][[/noparse]17183754.636000] usb 2-2: new low speed USB device using uhci_hcd and address 10
Jun 18 15:44:16 Windkraftanlage kernel: [noparse][[/noparse]17183755.204000] usb 2-2: new low speed USB device using uhci_hcd and address 11
Jun 18 15:44:17 Windkraftanlage kernel: [noparse][[/noparse]17183755.772000] usb 2-2: new low speed USB device using uhci_hcd and address 12
Jun 18 15:44:17 Windkraftanlage kernel: [noparse][[/noparse]17183756.300000] usb 2-2: new low speed USB device using uhci_hcd and address 13

But again there is nothing, no device is created (and not ftdi_sio kernel module is loaded, but I doubt this is needed).

Does anyone has a clue what can be wrong ?, do they (FT232) need some initialization for the (internal) EEPROM or something ?

Thanks in advance

Ale

RobotWorkshop

Hello Ale,

Can you post your schematic and perhaps pictures of your board? Without that it will be difficult to help you.

As long as the FT232RL chip is wired up (and powered) properly it should be recognized under Windows XP. You can get the utility from the FTDI site that allows you to customize some of the settings if you want to. You can change the description, what type of power, and some of the pin signals. That is optional in most cases.

How are you powering the device? Is everything powered from the USB port or do you have a separate power supply for your propeller and FT232RL chip? Did you follow the guidelines in the datasheet for the FT232RL?

Best Regards,

Robert

Ale

The circuit is the one published in PropClipPlug v1.3, last page. Ony changes: 150 R resistors were changed with 453R resistors. And I used the FT232RL SSOP 28 version on an adaptor, on a breadboard with the resto of the components. I will recheck the connections again, but any diagnostics I could do would be helpful.

Ale

Hallo,

Well, rechecking the wiring I found my mistake... the USB+ and USB- were reversed. Now you know the symptoms.

Thanks !