ChibiOS Free Embedded RTOS

Posted: **Fri Sep 07, 2012 8:50 pm**

You should single step in ASM through that switch/case and see what happens exactly.

Giovanni

Posted: **Thu Sep 13, 2012 3:23 pm**

Ok so to fix the problem, the following line of code was changed to directly use the LLD

      /* Initiate next receive */
       usbPrepareReceive(usbp, EP_OUT, receiveBuf, 62);
       chSysLockFromIsr();
       usbStartReceiveI(usbp, EP_OUT);
       chSysUnlockFromIsr();

to

Code: Select all

usb_lld_read_packet_buffer(usbp, ep, receiveBuf, 62);
      usb_lld_start_out(usbp, ep);

Posted: **Thu Sep 13, 2012 6:28 pm**

Hi,

That looks more like a workaround than a solution, low level functions are not meant to be called directly. It is possible that some error condition prevents the high level functions to call the low level but you should address the reason not just bypass the check.

Giovanni

ChibiOS Free Embedded RTOS

STM32F103 LibUsb

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Re: STM32F103 LibUsb

Re: STM32F103 LibUsb