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Author Topic: FT121 USB connection  (Read 390 times)

guoweiran

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FT121 USB connection
« on: July 22, 2019, 06:53:53 AM »

Hi,

 I'm using a pcb which is used to convert usb into spi with a FT121 on it. When I plug the pcb's usb interfacing into PC, it couldn't be identified. I have downloaded and run the "CDM21228_setup.exe", "FT12x-CDC" and installed the "ft12x.inf", and it doesn't work.
 After I installed the "ft12x.inf", "FT12x Evaluation Platform(COM3)" with a yellow exclamation mark appeared in the device manager's "port", saying "The device could not be started. (Code 10)". When I unplug the pcb, the "FT12x Evaluation Platform(COM3)" will still stay there.

 What should I do or download to get the pcb identified? And which software is used to configure it? It seems that FT_Prog doesn't support the FT121 chip.

Best regards.
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FTDI Community

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Re: FT121 USB connection
« Reply #1 on: July 22, 2019, 09:49:07 AM »

Hello,

Thanks for your post.

Please contact support1@ftdichip.com where we can assist you further.

Regards,
FTDI Community
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guoweiran

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Re: FT121 USB connection
« Reply #2 on: July 22, 2019, 11:50:05 AM »

Thanks, I have sent it,Waiting for your reply.
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FTDI Community Admin

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Re: FT121 USB connection
« Reply #3 on: July 22, 2019, 03:10:09 PM »

Hello,

Sorry but we have not received your email, can you please check and resend?

Regards,
FTDI Community
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