uint8_t * USBMouse::configurationDesc() {
static uint8_t configurationDescriptor[] = {
CONFIGURATION_DESCRIPTOR_LENGTH, // bLength
CONFIGURATION_DESCRIPTOR, // bDescriptorType
LSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (LSB)
MSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (MSB)
0x01, // bNumInterfaces
DEFAULT_CONFIGURATION, // bConfigurationValue
0x00, // iConfiguration
C_RESERVED | C_SELF_POWERED, // bmAttributes
C_POWER(0), // bMaxPower
INTERFACE_DESCRIPTOR_LENGTH, // bLength
INTERFACE_DESCRIPTOR, // bDescriptorType
0x00, // bInterfaceNumber
0x00, // bAlternateSetting
0x02, // bNumEndpoints
HID_CLASS, // bInterfaceClass
HID_SUBCLASS_BOOT, // bInterfaceSubClass
HID_PROTOCOL_MOUSE, // bInterfaceProtocol
0x00, // iInterface
HID_DESCRIPTOR_LENGTH, // bLength
HID_DESCRIPTOR, // bDescriptorType
LSB(HID_VERSION_1_11), // bcdHID (LSB)
MSB(HID_VERSION_1_11), // bcdHID (MSB)
0x00, // bCountryCode
0x01, // bNumDescriptors
REPORT_DESCRIPTOR, // bDescriptorType
(uint8_t)(LSB(reportDescLength())), // wDescriptorLength (LSB)
(uint8_t)(MSB(reportDescLength())), // wDescriptorLength (MSB)
ENDPOINT_DESCRIPTOR_LENGTH, // bLength
ENDPOINT_DESCRIPTOR, // bDescriptorType
PHY_TO_DESC(EPINT_IN), // bEndpointAddress
E_INTERRUPT, // bmAttributes
LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
1, // bInterval (milliseconds)
ENDPOINT_DESCRIPTOR_LENGTH, // bLength
ENDPOINT_DESCRIPTOR, // bDescriptorType
PHY_TO_DESC(EPINT_OUT), // bEndpointAddress
E_INTERRUPT, // bmAttributes
LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
1, // bInterval (milliseconds)
};
return configurationDescriptor;
}
// Called in ISR context
// Called by USBDevice on Endpoint0 request
// This is used to handle extensions to standard requests
// and class specific requests
// Return true if class handles this request
bool USBHID::USBCallback_request() {
bool success = false;
CONTROL_TRANSFER * transfer = getTransferPtr();
uint8_t *hidDescriptor;
// Process additional standard requests
if ((transfer->setup.bmRequestType.Type == STANDARD_TYPE))
{
switch (transfer->setup.bRequest)
{
case GET_DESCRIPTOR:
switch (DESCRIPTOR_TYPE(transfer->setup.wValue))
{
case REPORT_DESCRIPTOR:
if ((reportDesc() != NULL) \
&& (reportDescLength() != 0))
{
transfer->remaining = reportDescLength();
transfer->ptr = reportDesc();
transfer->direction = DEVICE_TO_HOST;
success = true;
}
break;
case HID_DESCRIPTOR:
// Find the HID descriptor, after the configuration descriptor
hidDescriptor = findDescriptor(HID_DESCRIPTOR);
if (hidDescriptor != NULL)
{
transfer->remaining = HID_DESCRIPTOR_LENGTH;
transfer->ptr = hidDescriptor;
transfer->direction = DEVICE_TO_HOST;
success = true;
}
break;
default:
break;
}
break;
default:
break;
}
}
// Process class-specific requests
if (transfer->setup.bmRequestType.Type == CLASS_TYPE)
{
switch (transfer->setup.bRequest)
{
case SET_REPORT:
// First byte will be used for report ID
outputReport.data[0] = transfer->setup.wValue & 0xff;
outputReport.length = transfer->setup.wLength + 1;
transfer->remaining = sizeof(outputReport.data) - 1;
transfer->ptr = &outputReport.data[1];
transfer->direction = HOST_TO_DEVICE;
transfer->notify = true;
success = true;
default:
break;
}
}
return success;
}
