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@ -56,9 +56,9 @@ TASK_LIST
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bool UsingReportProtocol = true;
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/** Current Idle period. This is set by the host via a Set Idle HID class request to silence the device's reports
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* for either the entire idle duration, or until the report status changes (e.g. the user moves the mouse).
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* for either the entire idle duration, or until the report status changes (e.g. the user presses a key).
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*/
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uint8_t IdleCount = 0;
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uint16_t IdleCount = 500;
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/** Current Idle period remaining. When the IdleCount value is set, this tracks the remaining number of idle
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* milliseconds. This is separate to the IdleCount timer and is incremented and compared as the host may request
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@ -140,9 +140,7 @@ EVENT_HANDLER(USB_Reset)
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EVENT_HANDLER(USB_Disconnect)
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{
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/* Stop running keyboard reporting and USB management tasks */
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#if !defined(INTERRUPT_DATA_ENDPOINT)
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Scheduler_SetTaskMode(USB_Keyboard_Report, TASK_STOP);
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#endif
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#if !defined(INTERRUPT_CONTROL_ENDPOINT)
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Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
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@ -162,28 +160,16 @@ EVENT_HANDLER(USB_ConfigurationChanged)
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ENDPOINT_DIR_IN, KEYBOARD_EPSIZE,
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ENDPOINT_BANK_SINGLE);
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#if defined(INTERRUPT_DATA_ENDPOINT)
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/* Enable the endpoint IN interrupt ISR for the report endpoint */
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USB_INT_Enable(ENDPOINT_INT_IN);
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#endif
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/* Setup Keyboard LED Report Endpoint */
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Endpoint_ConfigureEndpoint(KEYBOARD_LEDS_EPNUM, EP_TYPE_INTERRUPT,
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ENDPOINT_DIR_OUT, KEYBOARD_EPSIZE,
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ENDPOINT_BANK_SINGLE);
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#if defined(INTERRUPT_DATA_ENDPOINT)
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/* Enable the endpoint OUT interrupt ISR for the LED report endpoint */
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USB_INT_Enable(ENDPOINT_INT_OUT);
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#endif
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/* Indicate USB connected and ready */
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UpdateStatus(Status_USBReady);
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#if !defined(INTERRUPT_DATA_ENDPOINT)
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/* Start running keyboard reporting task */
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Scheduler_SetTaskMode(USB_Keyboard_Report, TASK_RUN);
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#endif
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}
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/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific
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@ -358,7 +344,7 @@ void ProcessLEDReport(uint8_t LEDReport)
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}
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/** Sends the next HID report to the host, via the keyboard data endpoint. */
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static inline void SendNextReport(void)
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void SendNextReport(void)
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{
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static USB_KeyboardReport_Data_t PrevKeyboardReportData;
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USB_KeyboardReport_Data_t KeyboardReportData;
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@ -367,41 +353,38 @@ static inline void SendNextReport(void)
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/* Create the next keyboard report for transmission to the host */
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CreateKeyboardReport(&KeyboardReportData);
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/* Check if the idle period is set */
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if (IdleCount)
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{
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/* Check if idle period has elapsed */
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if (!(IdleMSRemaining))
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{
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/* Reset the idle time remaining counter, must multiply by 4 to get the duration in milliseconds */
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IdleMSRemaining = (IdleCount << 2);
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}
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else
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{
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/* Idle period not elapsed, indicate that a report must not be sent unless the report has changed */
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SendReport = (memcmp(&PrevKeyboardReportData, &KeyboardReportData, sizeof(USB_KeyboardReport_Data_t)) != 0);
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}
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}
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/* Check to see if the report data has changed - if so a report MUST be sent */
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SendReport = (memcmp(&PrevKeyboardReportData, &KeyboardReportData, sizeof(USB_KeyboardReport_Data_t)) != 0);
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/* Save the current report data for later comparison to check for changes */
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PrevKeyboardReportData = KeyboardReportData;
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/* Check if the idle period is set and has elapsed */
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if ((IdleCount != HID_IDLE_CHANGESONLY) && (!(IdleMSRemaining)))
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{
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/* Reset the idle time remaining counter, must multiply by 4 to get the duration in milliseconds */
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IdleMSRemaining = (IdleCount << 2);
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/* Idle period is set and has elapsed, must send a report to the host */
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SendReport = true;
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}
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/* Select the Keyboard Report Endpoint */
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Endpoint_SelectEndpoint(KEYBOARD_EPNUM);
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/* Check if Keyboard Endpoint Ready for Read/Write, and if we should send a report */
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/* Check if Keyboard Endpoint Ready for Read/Write and if we should send a new report */
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if (Endpoint_IsReadWriteAllowed() && SendReport)
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{
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/* Write Keyboard Report Data */
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Endpoint_Write_Stream_LE(&KeyboardReportData, sizeof(KeyboardReportData));
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/* Finalize the stream transfer to send the last packet */
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Endpoint_ClearIN();
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}
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}
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/** Reads the next LED status report from the host from the LED data endpoint, if one has been sent. */
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static inline void ReceiveNextReport(void)
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void ReceiveNextReport(void)
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{
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/* Select the Keyboard LED Report Endpoint */
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Endpoint_SelectEndpoint(KEYBOARD_LEDS_EPNUM);
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@ -451,7 +434,6 @@ void UpdateStatus(uint8_t CurrentStatus)
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LEDs_SetAllLEDs(LEDMask);
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}
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#if !defined(INTERRUPT_DATA_ENDPOINT)
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/** Function to manage HID report generation and transmission to the host, when in report mode. */
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TASK(USB_Keyboard_Report)
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{
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@ -465,8 +447,8 @@ TASK(USB_Keyboard_Report)
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ReceiveNextReport();
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}
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}
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#endif
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#if defined(INTERRUPT_CONTROL_ENDPOINT)
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/** ISR for the general Pipe/Endpoint interrupt vector. This ISR fires when an endpoint's status changes (such as
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* a packet has been received) on an endpoint with its corresponding ISR enabling bits set. This is used to send
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* HID packets to the host each time the HID interrupt endpoints polling period elapses, as managed by the USB
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@ -475,52 +457,20 @@ TASK(USB_Keyboard_Report)
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*/
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ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
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{
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#if defined(INTERRUPT_CONTROL_ENDPOINT)
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/* Save previously selected endpoint before selecting a new endpoint */
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uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
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/* Check if the control endpoint has received a request */
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if (Endpoint_HasEndpointInterrupted(ENDPOINT_CONTROLEP))
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{
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/* Clear the endpoint interrupt */
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Endpoint_ClearEndpointInterrupt(ENDPOINT_CONTROLEP);
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/* Process the control request */
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USB_USBTask();
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/* Handshake the endpoint setup interrupt - must be after the call to USB_USBTask() */
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USB_INT_Clear(ENDPOINT_INT_SETUP);
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}
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#endif
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#if defined(INTERRUPT_DATA_ENDPOINT)
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/* Check if keyboard endpoint has interrupted */
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if (Endpoint_HasEndpointInterrupted(KEYBOARD_EPNUM))
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{
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/* Select the Keyboard Report Endpoint */
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Endpoint_SelectEndpoint(KEYBOARD_EPNUM);
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/* Clear the endpoint IN interrupt flag */
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USB_INT_Clear(ENDPOINT_INT_IN);
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/* Clear the Keyboard Report endpoint interrupt */
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Endpoint_ClearEndpointInterrupt(KEYBOARD_EPNUM);
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/* Send the next keypress report to the host */
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SendNextReport();
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}
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/* Check if Keyboard LED status Endpoint has interrupted */
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if (Endpoint_HasEndpointInterrupted(KEYBOARD_LEDS_EPNUM))
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{
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/* Select the Keyboard LED Report Endpoint */
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Endpoint_SelectEndpoint(KEYBOARD_LEDS_EPNUM);
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/* Clear the endpoint OUT interrupt flag */
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USB_INT_Clear(ENDPOINT_INT_OUT);
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/* Clear the Keyboard LED Report endpoint interrupt */
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Endpoint_ClearEndpointInterrupt(KEYBOARD_LEDS_EPNUM);
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/* Process the LED report sent from the host */
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ReceiveNextReport();
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}
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#endif
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/* Restore previously selected endpoint */
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Endpoint_SelectEndpoint(PrevSelectedEndpoint);
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}
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#endif
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