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Is it low USB speed supported on CDC CCS library?

 
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E_Blue



Joined: 13 Apr 2011
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Is it low USB speed supported on CDC CCS library?
PostPosted: Sat Sep 12, 2020 10:14 am     Reply with quote

Is it possible to use a PIC18F14K50 USB in low speed mode?

I'm developing a portable device and need to use a 6MHz Crystal so I need to use low speed mode.
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Ttelmah



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PostPosted: Sat Sep 12, 2020 10:28 am     Reply with quote

Yes.
However remember that not all devices support low speed.
So you cannot support bulk transfers on a low speed device, which
rules out an MSD device for example.
HID device, no problem.
E_Blue



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PostPosted: Sat Sep 12, 2020 10:56 am     Reply with quote

I must to declare something else or with this is enough?


Code:
#fuses NOWDT,PUT,HS,PLLEN,CPUDIV1,USBDIV1,MCLR,BROWNOUT,NOLVP,PROTECT,NOCPD,BORV30 //18F14K50
#use delay(clock=24M)

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Electric Blue
Ttelmah



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PostPosted: Sat Sep 12, 2020 12:44 pm     Reply with quote

#use delay(clock=24M, USB_LOW)

You have a 6MHz crystal?.
E_Blue



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PostPosted: Sat Sep 12, 2020 9:48 pm     Reply with quote

Yes, I have a 6MHz crystal.
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Electric Blue
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