/** Task to manage an enumerated USB mouse once connected, to display movement * data as it is received. */ void MouseHost_Task(void) { if (USB_HostState != HOST_STATE_Configured) return; if (HID_Host_IsReportReceived(&Mouse_HID_Interface)) { uint8_t MouseReport[Mouse_HID_Interface.State.LargestReportSize]; HID_Host_ReceiveReport(&Mouse_HID_Interface, &MouseReport); uint8_t LEDMask = LEDS_NO_LEDS; for (uint8_t ReportNumber = 0; ReportNumber < HIDReportInfo.TotalReportItems; ReportNumber++) { HID_ReportItem_t* ReportItem = &HIDReportInfo.ReportItems[ReportNumber]; /* Update the report item value if it is contained within the current report */ if (!(USB_GetHIDReportItemInfo(MouseReport, ReportItem))) continue; /* Determine what report item is being tested, process updated value as needed */ if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_BUTTON) && (ReportItem->ItemType == HID_REPORT_ITEM_In)) { if (ReportItem->Value) LEDMask = LEDS_ALL_LEDS; } else if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_GENERIC_DCTRL) && (ReportItem->Attributes.Usage.Usage == USAGE_SCROLL_WHEEL) && (ReportItem->ItemType == HID_REPORT_ITEM_In)) { int16_t WheelDelta = HID_ALIGN_DATA(ReportItem, int16_t); if (WheelDelta) LEDMask = (LEDS_LED1 | LEDS_LED2 | ((WheelDelta > 0) ? LEDS_LED3 : LEDS_LED4)); } else if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_GENERIC_DCTRL) && ((ReportItem->Attributes.Usage.Usage == USAGE_X) || (ReportItem->Attributes.Usage.Usage == USAGE_Y)) && (ReportItem->ItemType == HID_REPORT_ITEM_In)) { int16_t DeltaMovement = HID_ALIGN_DATA(ReportItem, int16_t); if (DeltaMovement) { if (ReportItem->Attributes.Usage.Usage == USAGE_X) LEDMask |= ((DeltaMovement > 0) ? LEDS_LED1 : LEDS_LED2); else LEDMask |= ((DeltaMovement > 0) ? LEDS_LED3 : LEDS_LED4); } } } LEDs_SetAllLEDs(LEDMask); } }
/** Processes a read HID report from an attached joystick, extracting out elements via the HID parser results * as required and displays movement and button presses on the board LEDs. * * \param[in] JoystickReport Pointer to a HID report from an attached joystick device */ void ProcessJoystickReport(uint8_t* JoystickReport) { uint8_t LEDMask = LEDS_NO_LEDS; /* Check each HID report item in turn, looking for joystick X/Y/button reports */ for (uint8_t ReportNumber = 0; ReportNumber < HIDReportInfo.TotalReportItems; ReportNumber++) { /* Create a temporary item pointer to the next report item */ HID_ReportItem_t* ReportItem = &HIDReportInfo.ReportItems[ReportNumber]; bool FoundData; if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_BUTTON) && (ReportItem->ItemType == HID_REPORT_ITEM_In)) { /* Get the joystick button value */ FoundData = USB_GetHIDReportItemInfo(JoystickReport, ReportItem); /* For multi-report devices - if the requested data was not in the issued report, continue */ if (!(FoundData)) continue; /* If button is pressed, all LEDs are turned on */ if (ReportItem->Value) LEDMask = LEDS_ALL_LEDS; } else if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_GENERIC_DCTRL) && ((ReportItem->Attributes.Usage.Usage == USAGE_X) || (ReportItem->Attributes.Usage.Usage == USAGE_Y)) && (ReportItem->ItemType == HID_REPORT_ITEM_In)) { /* Get the joystick relative position value */ FoundData = USB_GetHIDReportItemInfo(JoystickReport, ReportItem); /* For multi-report devices - if the requested data was not in the issued report, continue */ if (!(FoundData)) continue; int16_t DeltaMovement = HID_ALIGN_DATA(ReportItem, int16_t); /* Check to see if a (non-zero) delta movement has been indicated */ if (DeltaMovement) { /* Determine if the report is for the X or Y delta movement, light LEDs as appropriate */ if (ReportItem->Attributes.Usage.Usage == USAGE_X) LEDMask |= ((DeltaMovement > 0) ? LEDS_LED1 : LEDS_LED2); else LEDMask |= ((DeltaMovement > 0) ? LEDS_LED3 : LEDS_LED4); } } } /* Display the button information on the board LEDs */ LEDs_SetAllLEDs(LEDMask); }
/** Main program entry point. This routine configures the hardware required by the application, then * enters a loop to run the application tasks in sequence. */ int main(void) { SetupHardware(); puts_P(PSTR(ESC_FG_CYAN "Mouse Host Demo running.\r\n" ESC_FG_WHITE)); sei(); LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); for (;;) { switch (USB_HostState) { case HOST_STATE_Addressed: LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING); uint16_t ConfigDescriptorSize; uint8_t ConfigDescriptorData[512]; if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData, sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful) { puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n")); LEDs_SetAllLEDs(LEDMASK_USB_ERROR); USB_HostState = HOST_STATE_WaitForDeviceRemoval; break; } if (HID_Host_ConfigurePipes(&Mouse_HID_Interface, ConfigDescriptorSize, ConfigDescriptorData) != HID_ENUMERROR_NoError) { puts_P(PSTR("Attached Device Not a Valid Mouse.\r\n")); LEDs_SetAllLEDs(LEDMASK_USB_ERROR); USB_HostState = HOST_STATE_WaitForDeviceRemoval; break; } if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful) { puts_P(PSTR("Error Setting Device Configuration.\r\n")); LEDs_SetAllLEDs(LEDMASK_USB_ERROR); USB_HostState = HOST_STATE_WaitForDeviceRemoval; break; } if (HID_Host_SetReportProtocol(&Mouse_HID_Interface) != 0) { puts_P(PSTR("Error Setting Report Protocol Mode or Not a Valid Mouse.\r\n")); LEDs_SetAllLEDs(LEDMASK_USB_ERROR); USB_HostState = HOST_STATE_WaitForDeviceRemoval; break; } puts_P(PSTR("Mouse Enumerated.\r\n")); LEDs_SetAllLEDs(LEDMASK_USB_READY); USB_HostState = HOST_STATE_Configured; break; case HOST_STATE_Configured: if (HID_Host_IsReportReceived(&Mouse_HID_Interface)) { uint8_t MouseReport[Mouse_HID_Interface.State.LargestReportSize]; HID_Host_ReceiveReport(&Mouse_HID_Interface, &MouseReport); uint8_t LEDMask = LEDS_NO_LEDS; for (uint8_t ReportNumber = 0; ReportNumber < HIDReportInfo.TotalReportItems; ReportNumber++) { HID_ReportItem_t* ReportItem = &HIDReportInfo.ReportItems[ReportNumber]; /* Update the report item value if it is contained within the current report */ if (!(USB_GetHIDReportItemInfo(MouseReport, ReportItem))) continue; /* Determine what report item is being tested, process updated value as needed */ if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_BUTTON) && (ReportItem->ItemType == REPORT_ITEM_TYPE_In)) { if (ReportItem->Value) LEDMask = LEDS_ALL_LEDS; } else if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_GENERIC_DCTRL) && (ReportItem->Attributes.Usage.Usage == USAGE_SCROLL_WHEEL) && (ReportItem->ItemType == REPORT_ITEM_TYPE_In)) { int16_t WheelDelta = HID_ALIGN_DATA(ReportItem, int16_t); if (WheelDelta) LEDMask = (LEDS_LED1 | LEDS_LED2 | ((WheelDelta > 0) ? LEDS_LED3 : LEDS_LED4)); } else if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_GENERIC_DCTRL) && ((ReportItem->Attributes.Usage.Usage == USAGE_X) || (ReportItem->Attributes.Usage.Usage == USAGE_Y)) && (ReportItem->ItemType == REPORT_ITEM_TYPE_In)) { int16_t DeltaMovement = HID_ALIGN_DATA(ReportItem, int16_t); if (ReportItem->Attributes.Usage.Usage == USAGE_X) { if (DeltaMovement) LEDMask |= ((DeltaMovement > 0) ? LEDS_LED1 : LEDS_LED2); } else { if (DeltaMovement) LEDMask |= ((DeltaMovement > 0) ? LEDS_LED3 : LEDS_LED4); } } } LEDs_SetAllLEDs(LEDMask); } break; } HID_Host_USBTask(&Mouse_HID_Interface); USB_USBTask(); } }