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doguhanpala
Joined: 05 Oct 2016
Posts: 120
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| USB Device not recognized |
 Posted: Thu May 04, 2017 3:23 am |
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Hello
I have a pcb board (the pic is 18f4550 tqfp) and i am doing some tests o it. I want to check usb connection on my board. I uploaded this code to my pic. I hear the usb connection sound on windows but it gives the warning, usb device not recognized. I want to learn, whether the problem is on hardware or on my code. Any ideas?
Thank you so much!
| Code: |
#if !defined(__PCH__)
#error USB CDC Library requires PIC18
#endif
#include <18F4550.h>
#fuses HSPLL,NOWDT, PUT, NOLVP,NOMCLR,NOPROTECT,NOLVP,NODEBUG,NOBROWNOUT,USBDIV,PLL5,CPUDIV1,VREGEN,ICSP2 //ICPRT enabled
#device ADC=10
#use delay(clock=48000000)
#include<usb.h>
#include<usb_cdc.h>
#include <pic18_usb.h>
#define rp_getc usb_cdc_getc
#define rp_putc usb_cdc_putc
void main()
{
usb_cdc_init();
usb_init();
usb_task();
} |
Best wishes
Doguhan |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19341
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| Posted: Thu May 04, 2017 3:59 am |
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The code you have dies...
Drops off the end, so isn't running.
When Windows tries to enumerate the device, there is no code there to answer... |
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doguhanpala
Joined: 05 Oct 2016
Posts: 120
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| Posted: Thu May 04, 2017 5:35 am |
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| Ttelmah wrote: | The code you have dies...
Drops off the end, so isn't running.
When Windows tries to enumerate the device, there is no code there to answer... |
sorry for the newbie mistake... i will add a while(true). thank you so much Ttelmah! |
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