static bool_t usbRequestsHook(USBDriver *usbp)
{
// Composite Interface Number
#if HAL_USE_MSD
if (usbp->setup[4] == 4)
return msdRequestsHook(usbp);
#endif
return sduRequestsHook(usbp);
}
/*
* Handling messages not implemented in the default handler nor in the
* SerialUSB handler.
*/
static bool requests_hook(USBDriver *usbp) {
if (((usbp->setup[0] & USB_RTYPE_RECIPIENT_MASK) == USB_RTYPE_RECIPIENT_INTERFACE) &&
(usbp->setup[1] == USB_REQ_SET_INTERFACE)) {
usbSetupTransfer(usbp, NULL, 0, NULL);
return true;
}
return sduRequestsHook(usbp);
}
bool_t msdCdcRequestsHook(USBDriver *usbp) {
bool_t r;
r = msdRequestsHook(usbp);
if( r ) {
return(r);
}
r = sduRequestsHook(usbp);
return(r);
}
bool usb_setup_hook(USBDriver *usbp) {
/* Override GET_DESCRIPTOR requests to return data from program memory */
if ((usbp->setup[0] & (USB_RTYPE_RECIPIENT_MASK | USB_RTYPE_TYPE_MASK)) ==
(USB_RTYPE_RECIPIENT_DEVICE | USB_RTYPE_TYPE_STD) &&
usbp->setup[1] == USB_REQ_GET_DESCRIPTOR) {
const uint8_t dtype = usbp->setup[3];
const uint8_t dindex = usbp->setup[2];
const AVR_USB_TX_BUF_ADDRESS_SPACE uint8_t *ddata = NULL;
size_t dsize = 0;
switch (dtype) {
case USB_DESCRIPTOR_DEVICE:
dsize = sizeof(vcom_device_descriptor_data);
ddata = vcom_device_descriptor_data;
break;
case USB_DESCRIPTOR_CONFIGURATION:
dsize = sizeof(vcom_configuration_descriptor_data);
ddata = vcom_configuration_descriptor_data;
break;
case USB_DESCRIPTOR_STRING:
if (dindex == 0) {
dsize = sizeof(vcom_string0);
ddata = vcom_string0;
} else if (dindex == 1) {
dsize = sizeof(vcom_string1);
ddata = vcom_string1;
} else if (dindex == 2) {
dsize = sizeof(vcom_string2);
ddata = vcom_string2;
} else if (dindex == 3) {
dsize = sizeof(vcom_string3);
ddata = vcom_string3;
}
break;
}
if (ddata == NULL) {
return false;
}
usbSetupTransfer(usbp, ddata, dsize, NULL);
return true;
}
return sduRequestsHook(usbp);
}