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Changed GenericHID device demo to use the LUFA scheduler, added INTERRUPT_DATA_ENDPOINT and INTERRUPT_CONTROL_ENDPOINT compile time options.

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This commit is contained in:
Dean Camera 2009-04-01 07:43:50 +00:00
parent 6198289b38
commit ece9e3d599
8 changed files with 113 additions and 6 deletions
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78
Demos/Device/GenericHID/GenericHID.c
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@ -42,6 +42,18 @@ BUTTLOADTAG(BuildTime, __TIME__);
BUTTLOADTAG(BuildDate, __DATE__);
BUTTLOADTAG(LUFAVersion, "LUFA V" LUFA_VERSION_STRING);
/* Scheduler Task List */
TASK_LIST
{
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
{ Task: USB_USBTask , TaskStatus: TASK_STOP },
#endif
#if !defined(INTERRUPT_DATA_ENDPOINT)
{ Task: USB_HID_Report , TaskStatus: TASK_STOP },
#endif
};
/** Static buffer to hold the last received report from the host, so that it can be echoed back in the next sent report */
static uint8_t LastReceived[GENERIC_REPORT_SIZE];
@ -61,11 +73,14 @@ int main(void)
/* Indicate USB not ready */
UpdateStatus(Status_USBNotReady);
/* Initialize Scheduler so that it can be used */
Scheduler_Init();
/* Initialize USB Subsystem */
USB_Init();
/* >> APPLICATION INIT CODE HERE << */
for (;;);
/* Scheduling - routine never returns, so put this last in the main function */
Scheduler_Start();
}
/** Event handler for the USB_Reset event. This fires when the USB interface is reset by the USB host, before the
@ -74,11 +89,13 @@ int main(void)
*/
EVENT_HANDLER(USB_Reset)
{
#if defined(INTERRUPT_CONTROL_ENDPOINT)
/* Select the control endpoint */
Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
/* Enable the endpoint SETUP interrupt ISR for the control endpoint */
USB_INT_Enable(ENDPOINT_INT_SETUP);
#endif
}
/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
@ -109,16 +126,20 @@ EVENT_HANDLER(USB_ConfigurationChanged)
ENDPOINT_DIR_IN, GENERIC_EPSIZE,
ENDPOINT_BANK_SINGLE);
#if defined(INTERRUPT_DATA_ENDPOINT)
/* Enable the endpoint IN interrupt ISR for the report endpoint */
USB_INT_Enable(ENDPOINT_INT_IN);
#endif
/* Setup Generic OUT Report Endpoint */
Endpoint_ConfigureEndpoint(GENERIC_OUT_EPNUM, EP_TYPE_INTERRUPT,
ENDPOINT_DIR_OUT, GENERIC_EPSIZE,
ENDPOINT_BANK_SINGLE);
#if defined(INTERRUPT_DATA_ENDPOINT)
/* Enable the endpoint OUT interrupt ISR for the report endpoint */
USB_INT_Enable(ENDPOINT_INT_OUT);
#endif
/* Indicate USB connected and ready */
UpdateStatus(Status_USBReady);
@ -237,6 +258,49 @@ void CreateGenericHIDReport(uint8_t* DataArray)
DataArray[i] = LastReceived[i];
}
#if !defined(INTERRUPT_DATA_ENDPOINT)
TASK(USB_HID_Report)
{
/* Check if the USB system is connected to a host */
if (USB_IsConnected)
{
Endpoint_SelectEndpoint(GENERIC_OUT_EPNUM);
if (Endpoint_ReadWriteAllowed())
{
/* Create a tempoary buffer to hold the read in report from the host */
uint8_t GenericData[GENERIC_REPORT_SIZE];
/* Read Generic Report Data */
Endpoint_Read_Stream_LE(&GenericData, sizeof(GenericData));
/* Process Generic Report Data */
ProcessGenericHIDReport(GenericData);
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearCurrentBank();
}
Endpoint_SelectEndpoint(GENERIC_IN_EPNUM);
if (Endpoint_ReadWriteAllowed())
{
/* Create a tempoary buffer to hold the report to send to the host */
uint8_t GenericData[GENERIC_REPORT_SIZE];
/* Create Generic Report Data */
CreateGenericHIDReport(GenericData);
/* Write Generic Report Data */
Endpoint_Write_Stream_LE(&GenericData, sizeof(GenericData));
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearCurrentBank();
}
}
}
#endif
/** ISR for the general Pipe/Endpoint interrupt vector. This ISR fires when an endpoint's status changes (such as
* a packet has been received) on an endpoint with its corresponding ISR enabling bits set. This is used to send
* HID packets to the host each time the HID interrupt endpoints polling period elapses, as managed by the USB
@ -247,6 +311,7 @@ ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
/* Save previously selected endpoint before selecting a new endpoint */
uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
#if defined(INTERRUPT_CONTROL_ENDPOINT)
/* Check if the control endpoint has received a request */
if (Endpoint_HasEndpointInterrupted(ENDPOINT_CONTROLEP))
{
@ -259,7 +324,9 @@ ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
/* Handshake the endpoint setup interrupt - must be after the call to USB_USBTask() */
USB_INT_Clear(ENDPOINT_INT_SETUP);
}
#endif
#if defined(INTERRUPT_DATA_ENDPOINT)
/* Check if Generic IN endpoint has interrupted */
if (Endpoint_HasEndpointInterrupted(GENERIC_IN_EPNUM))
{
@ -272,7 +339,7 @@ ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
/* Clear the Generic IN Report endpoint interrupt and select the endpoint */
Endpoint_ClearEndpointInterrupt(GENERIC_IN_EPNUM);
/* Create a tempoary buffer to hold the report to send to the host */
/* Create a temporary buffer to hold the report to send to the host */
uint8_t GenericData[GENERIC_REPORT_SIZE];
/* Create Generic Report Data */
@ -297,7 +364,7 @@ ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
/* Clear the Generic OUT Report endpoint interrupt and select the endpoint */
Endpoint_ClearEndpointInterrupt(GENERIC_OUT_EPNUM);
/* Create a tempoary buffer to hold the read in report from the host */
/* Create a temporary buffer to hold the read in report from the host */
uint8_t GenericData[GENERIC_REPORT_SIZE];
/* Read Generic Report Data */
@ -309,6 +376,7 @@ ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearCurrentBank();
}
#endif
/* Restore previously selected endpoint */
Endpoint_SelectEndpoint(PrevSelectedEndpoint);