Problem with the basicusb example
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#1171001
Hi, I am trying the basicusb example provided with the winarm toolchain. I use it as a virtual com port, so it is supposed to do a bridge between the USART0 and the virtual port. I have one problem with it. When I send datas from virtual port to usart0 it works fine but when I send datas from the usart0 I only receive one character from the virtual com port. After that, nothing works. Have you a idea about this issue? Thank you, -- Eric
Guest
#1171002
ralawa wrote: > Hi, > > I am trying the basicusb example provided with the winarm toolchain. I > use it as a virtual com port, so it is supposed to do a bridge between > the USART0 and the virtual port. I have one problem with it. When I send > datas from virtual port to usart0 it works fine but when I send datas > from the usart0 I only receive one character from the virtual com port. > After that, nothing works. > > Have you a idea about this issue? I have only ported this example to gcc. I have not teste the port very much but the bi-directional data-exchange did work. But maybe there is a mistake in the port. Get the evaluation-version of the IAR-Compiler and the original source-code from at91.com and try again. If you see the problem with this setup too ask in the forum at at91.com. You can also try the USB-code in the freertos example available from freertos.org. Martin Thomas Having same problem when I ported the Atmel USB Virtual COM example to C8051F320 quite long ago. But sorry, could not recall what went wrong. I think it is related to: - ACM Descriptor, or - have to keep returning NAK to PC if microcontroller has no serial data to send. I also think it is easier to get original source from at91.com and try again.
Guest
#1171004
MH Tay wrote: > I also think it is easier to get original source > from at91.com and try again. OK I will try this. Thank you. Reply |