Where I can find USB kernel

[luben111]

cp2101 8051f320

Hello,

I can't figure out from where to take USB kernel. I have to make a project with USB in HOLTEK part and I don't want to rediscover the wheel.

Thank you
Luben

 

[bobcat1]

HI

If all you need is connect your controller via USB go to www.silabs.com and get

CP2101 chip for converting RS232 <-> USB as simple as it sound


All the best


Bobi

 

[luben111]

Hello,

SP2101 is too expensive solution for my purposes. I found uP that are several times cheaper then Silicon labs one and has USB and there are lot of free resources to put my code there - see HOLTEK 82K96.

And yes, I agree that Silicon labs USB - serial converters are really excellent... just too expensive and there is no place to put my code. I used uP 8051F320 from Silicon labs and it has plenty memory after you add the USB kernel, unfortunately it's 3 times more expensive then HOLTEK.

best regards
Luben

 

[bamdad]

USB kernel? or a USB communications layer?

 

[luben111]

I'm sorry.... USB communications layer.

I need the layer that communicate with the PC (handshaking, packages, etc.)

Thank you
Luben

 

[bamdad]

you know, this USB thing JUST seems to be too complex, once you've sent the host the necessary descriptor blocks, it will provide you with a device class driver, so for many standard applications, like modems, audio devices, video capture and mass storage, you do not NEED to develop any kind of PC-side driver...

I think that for low data-rates (a maximum of 64kbytes/sec, unidirectional) a simple CDC enumeration would do the job...