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Fixed race condition in the DFU class bootloader causing failed device reprogramming in some circumstances (thanks to Luis Mendes).

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This commit is contained in:
Dean Camera 2013-03-27 18:55:30 +00:00
parent f2e974954b
commit 4ba4097716
3 changed files with 29 additions and 2 deletions
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14
Bootloaders/Printer/BootloaderPrinter.c
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@ -380,6 +380,13 @@ void EVENT_USB_Device_ControlRequest(void)
"CLS:PRINTER";
Endpoint_ClearSETUP();
while (!(Endpoint_IsINReady()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
Endpoint_Write_16_BE(sizeof(PrinterIDString));
Endpoint_Write_Control_Stream_LE(PrinterIDString, strlen(PrinterIDString));
Endpoint_ClearStatusStage();
@ -390,6 +397,13 @@ void EVENT_USB_Device_ControlRequest(void)
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
while (!(Endpoint_IsINReady()))
{
if (USB_DeviceState == DEVICE_STATE_Unattached)
return;
}
Endpoint_Write_8(PRNT_PORTSTATUS_NOTERROR | PRNT_PORTSTATUS_SELECT);
Endpoint_ClearStatusStage();
}