98 lines
3.7 KiB
C
98 lines
3.7 KiB
C
#include "led_display.h"
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#include "usb_composite_device.h"
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static usb_basic_keyboard_report_t usbBasicKeyboardReports[2];
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uint32_t UsbBasicKeyboardActionCounter;
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usb_basic_keyboard_report_t* ActiveUsbBasicKeyboardReport = usbBasicKeyboardReports;
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static uint8_t usbBasicKeyboardInBuffer[USB_BASIC_KEYBOARD_REPORT_LENGTH];
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usb_basic_keyboard_report_t* GetInactiveUsbBasicKeyboardReport(void)
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{
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return ActiveUsbBasicKeyboardReport == usbBasicKeyboardReports ? usbBasicKeyboardReports+1 : usbBasicKeyboardReports;
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}
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static void SwitchActiveUsbBasicKeyboardReport(void)
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{
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ActiveUsbBasicKeyboardReport = GetInactiveUsbBasicKeyboardReport();
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}
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void ResetActiveUsbBasicKeyboardReport(void)
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{
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bzero(ActiveUsbBasicKeyboardReport, USB_BASIC_KEYBOARD_REPORT_LENGTH);
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}
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usb_status_t UsbBasicKeyboardAction(void)
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{
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if (((usb_device_hid_struct_t *)UsbCompositeDevice.basicKeyboardHandle)->interruptInPipeBusy) {
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((usb_device_hid_struct_t *)UsbCompositeDevice.basicKeyboardHandle)->interruptInPipeBusy = 0;
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return USB_DeviceCancel(((usb_device_hid_struct_t *)UsbCompositeDevice.basicKeyboardHandle)->handle,
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(USB_BASIC_KEYBOARD_ENDPOINT_INDEX & USB_ENDPOINT_NUMBER_MASK) |
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USB_DESCRIPTOR_ENDPOINT_ADDRESS_DIRECTION_IN);
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}
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UsbBasicKeyboardActionCounter++;
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SwitchActiveUsbBasicKeyboardReport(); // Switch the active report
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usb_status_t usb_status = USB_DeviceHidSend(
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UsbCompositeDevice.basicKeyboardHandle, USB_BASIC_KEYBOARD_ENDPOINT_INDEX,
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(uint8_t*)GetInactiveUsbBasicKeyboardReport(), USB_BASIC_KEYBOARD_REPORT_LENGTH);
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if (usb_status != kStatus_USB_Success) {
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SwitchActiveUsbBasicKeyboardReport(); // Switch back, as the command failed
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}
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return usb_status;
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}
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usb_status_t UsbBasicKeyboardCallback(class_handle_t handle, uint32_t event, void *param)
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{
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usb_status_t error = kStatus_USB_Error;
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switch (event) {
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// This report is received when the report has been sent
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case kUSB_DeviceHidEventSendResponse:
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error = kStatus_USB_Success;
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break;
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case kUSB_DeviceHidEventRecvResponse:
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case kUSB_DeviceHidEventGetReport:
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error = kStatus_USB_InvalidRequest;
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break;
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case kUSB_DeviceHidEventSetReport: {
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usb_device_hid_report_struct_t *report = (usb_device_hid_report_struct_t*)param;
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if (report->reportType == USB_DEVICE_HID_REQUEST_GET_REPORT_TYPE_OUPUT && report->reportId == 0 && report->reportLength == 1) {
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LedDisplay_SetIcon(LedDisplayIcon_CapsLock, report->reportBuffer[0] & HID_KEYBOARD_LED_CAPSLOCK);
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error = kStatus_USB_Success;
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} else {
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error = kStatus_USB_InvalidRequest;
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}
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break;
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}
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case kUSB_DeviceHidEventRequestReportBuffer: {
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usb_device_hid_report_struct_t *report = (usb_device_hid_report_struct_t*)param;
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if (report->reportLength <= USB_BASIC_KEYBOARD_REPORT_LENGTH) {
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report->reportBuffer = usbBasicKeyboardInBuffer;
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error = kStatus_USB_Success;
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} else {
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error = kStatus_USB_AllocFail;
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}
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break;
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}
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case kUSB_DeviceHidEventGetIdle:
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case kUSB_DeviceHidEventGetProtocol:
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case kUSB_DeviceHidEventSetIdle:
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case kUSB_DeviceHidEventSetProtocol:
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break;
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default:
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break;
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}
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return error;
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}
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usb_status_t UsbBasicKeyboardSetConfiguration(class_handle_t handle, uint8_t configuration)
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{
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return kStatus_USB_Error;
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}
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usb_status_t UsbBasicKeyboardSetInterface(class_handle_t handle, uint8_t interface, uint8_t alternateSetting)
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{
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return kStatus_USB_Error;
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}
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