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Changed all Device mode LowLevel demos and Device Class drivers so that the control request is acknowledged and any data transferred as quickly as possible without any processing inbetween sections, so that long callbacks or event handlers will not break communications with the host by exceeding the maximum control request stage timeout period.

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This commit is contained in:
Dean Camera 2010-08-22 03:26:20 +00:00
parent 1be3436e89
commit 4cc7f5200b
18 changed files with 82 additions and 167 deletions
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34
Demos/Device/LowLevel/Keyboard/Keyboard.c
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@ -143,15 +143,13 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
{
USB_KeyboardReport_Data_t KeyboardReportData;
Endpoint_ClearSETUP();
/* Create the next keyboard report for transmission to the host */
CreateKeyboardReport(&KeyboardReportData);
Endpoint_ClearSETUP();
/* Write the report data to the control endpoint */
Endpoint_Write_Control_Stream_LE(&KeyboardReportData, sizeof(KeyboardReportData));
/* Finalize the stream transfer to send the last packet or clear the host abort */
Endpoint_ClearOUT();
}
@ -171,13 +169,11 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
/* Read in the LED report from the host */
uint8_t LEDStatus = Endpoint_Read_Byte();
Endpoint_ClearOUT();
Endpoint_ClearStatusStage();
/* Process the incoming LED report */
ProcessLEDReport(LEDStatus);
/* Clear the endpoint data */
Endpoint_ClearOUT();
Endpoint_ClearStatusStage();
}
break;
@ -188,10 +184,8 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
/* Write the current protocol flag to the host */
Endpoint_Write_Byte(UsingReportProtocol);
/* Send the flag to the host */
Endpoint_ClearIN();
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}
@ -200,23 +194,21 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
Endpoint_ClearStatusStage();
/* Set or clear the flag depending on what the host indicates that the current Protocol should be */
UsingReportProtocol = (USB_ControlRequest.wValue != 0);
Endpoint_ClearStatusStage();
}
break;
case REQ_SetIdle:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
Endpoint_ClearSETUP();
Endpoint_ClearStatusStage();
/* Get idle period in MSB, IdleCount must be multiplied by 4 to get number of milliseconds */
IdleCount = ((USB_ControlRequest.wValue & 0xFF00) >> 6);
Endpoint_ClearStatusStage();
}
break;
@ -226,11 +218,9 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
Endpoint_ClearSETUP();
/* Write the current idle duration to the host, must be divided by 4 before sent to host */
Endpoint_Write_Byte(IdleCount >> 2);
/* Send the flag to the host */
Endpoint_ClearIN();
Endpoint_Write_Byte(IdleCount >> 2);
Endpoint_ClearIN();
Endpoint_ClearStatusStage();
}