static usb_request_status_t usb_standard_request_get_descriptor_setup(
usb_endpoint_t* const endpoint
) {
switch( endpoint->setup.value_h ) {
case USB_DESCRIPTOR_TYPE_DEVICE:
return usb_send_descriptor(endpoint, usb_descriptor_device);
case USB_DESCRIPTOR_TYPE_CONFIGURATION:
// TODO: Duplicated code. Refactor.
if( usb_speed(endpoint->device) == USB_SPEED_HIGH ) {
return usb_send_descriptor(endpoint, usb_descriptor_configuration_high_speed);
} else {
return usb_send_descriptor(endpoint, usb_descriptor_configuration_full_speed);
}
case USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER:
return usb_send_descriptor(endpoint, usb_descriptor_device_qualifier);
case USB_DESCRIPTOR_TYPE_OTHER_SPEED_CONFIGURATION:
// TODO: Duplicated code. Refactor.
if( usb_speed(endpoint->device) == USB_SPEED_HIGH ) {
return usb_send_descriptor(endpoint, usb_descriptor_configuration_full_speed);
} else {
return usb_send_descriptor(endpoint, usb_descriptor_configuration_high_speed);
}
case USB_DESCRIPTOR_TYPE_STRING:
return usb_send_descriptor_string(endpoint);
case USB_DESCRIPTOR_TYPE_INTERFACE:
case USB_DESCRIPTOR_TYPE_ENDPOINT:
default:
return USB_REQUEST_STATUS_STALL;
}
}
bool usb_set_configuration(
usb_device_t* const device,
const uint_fast8_t configuration_number
) {
const usb_configuration_t* new_configuration = 0;
if( configuration_number != 0 ) {
// Locate requested configuration.
if( device->configurations ) {
usb_configuration_t** configurations = *(device->configurations);
uint32_t i = 0;
const usb_speed_t usb_speed_current = usb_speed(device);
while( configurations[i] ) {
if( (configurations[i]->speed == usb_speed_current) &&
(configurations[i]->number == configuration_number) ) {
new_configuration = configurations[i];
break;
}
i++;
}
}
// Requested configuration not found: request error.
if( new_configuration == 0 ) {
return false;
}
}
if( new_configuration != device->configuration ) {
// Configuration changed.
device->configuration = new_configuration;
}
if (usb_configuration_changed_cb)
usb_configuration_changed_cb(device);
return true;
}