I need help, I can't install the drivers por icp programming. I use Windows xp sp2, is this a problem?.
My hardware is ok, Pta0 = 0v, two resistors (470K) pulldown on D+ and D-. If someone can help, thanks.
Your description is a bit vague!
Do you mean
1) that the device is not starting in ICP
2) that you can't install the required drivers when it does?
For 1) check
Pull-downs on D+/- (done)
Check that D+ & D- aren't transposed! It is surprisingly easy to do.
Crystal osc is OK (using a cro if possible), check crystal, caps & resistor.
100nF (or 470nF advice varies!) on reset pin - seems to help with the POR
Filter caps on Vreg
Device is blank - ICP is only automatic on a blank device.
Are you prompted for a driver when first plugging in?
Check in the hardware manager under windows for the device. If it doesn't appear at all then it's probably a hardware problem.
If it appears as a unknown device check the properties. It should be reported under "Device Instance Id" as
USB\VID_0425&PID_FF02\5&12D03F87&0&1If so, then the device is being recognized correctly and it's a driver problem. Right-click on the device and re-install the driver from that supplied with the AN2399SW.
Not much else to check - It has worked reliably for me under windows-XP SP1, 2 & 3.
hope this helps.
Retrieving data ...