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Code Issues Releases Activity

usb: make sure USB device is off limits until it has been init'ed

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USB device was being accessed prior to being initialized.
This resulted in a hard-fault or NMI when using any endpoint
beyond 0 or 1 which are init'ed by the BL.  This broke VCP which
is on endpoint 2 (control) and 3 (data).

This bug was introduced in 5ad37e69 which stopped checking the
transfer_possible variable.
This commit is contained in:
Stacey Sheldon 2012-05-20 13:28:16 -04:00
parent 7e6a222a8e
commit d7d670036b
1 changed files with 0 additions and 1 deletions
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1
flight/PiOS/STM32F10x/pios_usb.c
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@ -222,7 +222,6 @@ bool PIOS_USB_CheckAvailable(uint8_t id)
return 0;
usb_found = (usb_dev->cfg->vsense.gpio->IDR & usb_dev->cfg->vsense.init.GPIO_Pin);
return usb_found;
return usb_found != 0 && transfer_possible ? 1 : 0;
}