/**
* This function will create a cdc class instance.
*
* @param device the usb device object.
*
* @return RT_EOK on successful.
*/
uclass_t rt_usbd_class_cdc_create(udevice_t device)
{
uintf_t intf_comm, intf_data;
ualtsetting_t comm_setting, data_setting;
/* parameter check */
RT_ASSERT(device != RT_NULL);
/* create a cdc class */
cdc = rt_usbd_class_create(device, &dev_desc, &ops);
/* create a cdc communication interface and a cdc data interface */
intf_comm = rt_usbd_interface_create(device, _interface_handler);
intf_data = rt_usbd_interface_create(device, _interface_handler);
/* create a communication alternate setting and a data alternate setting */
comm_setting = rt_usbd_altsetting_create(&comm_desc.intf_desc,
sizeof(struct ucdc_comm_descriptor));
data_setting = rt_usbd_altsetting_create(&data_desc.intf_desc,
sizeof(struct ucdc_data_descriptor));
/* configure the cdc interface descriptor */
_cdc_descriptor_config(intf_comm->intf_num, intf_data->intf_num);
/* create a bulk in and a bulk endpoint */
ep_out = rt_usbd_endpoint_create(&data_desc.ep_out_desc, _ep_out_handler);
ep_in = rt_usbd_endpoint_create(&data_desc.ep_in_desc, _ep_in_handler);
/* add the bulk out and bulk in endpoints to the data alternate setting */
rt_usbd_altsetting_add_endpoint(data_setting, ep_in);
rt_usbd_altsetting_add_endpoint(data_setting, ep_out);
/* add the data alternate setting to the data interface
then set default setting of the interface */
rt_usbd_interface_add_altsetting(intf_data, data_setting);
rt_usbd_set_altsetting(intf_data, 0);
/* add the cdc data interface to cdc class */
rt_usbd_class_add_interface(cdc, intf_data);
/* create a command endpoint */
ep_cmd = rt_usbd_endpoint_create(&comm_desc.ep_desc, _ep_cmd_handler);
/* add the command endpoint to the cdc communication interface */
rt_usbd_altsetting_add_endpoint(comm_setting, ep_cmd);
/* add the communication alternate setting to the communication interface,
then set default setting of the interface */
rt_usbd_interface_add_altsetting(intf_comm, comm_setting);
rt_usbd_set_altsetting(intf_comm, 0);
/* add the communication interface to the cdc class */
rt_usbd_class_add_interface(cdc, intf_comm);
return cdc;
}
/**
* This function will create a cdc class instance.
*
* @param device the usb device object.
*
* @return RT_EOK on successful.
*/
uclass_t rt_usbd_class_cdc_create(udevice_t device)
{
uclass_t cdc;
cdc_eps_t eps;
uintf_t intf_comm, intf_data;
ualtsetting_t comm_setting, data_setting;
ucdc_data_desc_t data_desc;
ucdc_comm_desc_t comm_desc;
/* parameter check */
RT_ASSERT(device != RT_NULL);
/* create a cdc class */
cdc = rt_usbd_class_create(device, &dev_desc, &ops);
/* create a cdc class endpoints collection */
eps = rt_malloc(sizeof(struct cdc_eps));
cdc->eps = (void*)eps;
/* create a cdc communication interface and a cdc data interface */
intf_comm = rt_usbd_interface_create(device, _interface_handler);
intf_data = rt_usbd_interface_create(device, _interface_handler);
/* create a communication alternate setting and a data alternate setting */
comm_setting = rt_usbd_altsetting_create(sizeof(struct ucdc_comm_descriptor));
data_setting = rt_usbd_altsetting_create(sizeof(struct ucdc_data_descriptor));
/* config desc in alternate setting */
rt_usbd_altsetting_config_descriptor(comm_setting, &_comm_desc,
(rt_off_t)&((ucdc_comm_desc_t)0)->intf_desc);
rt_usbd_altsetting_config_descriptor(data_setting, &_data_desc, 0);
/* configure the cdc interface descriptor */
_cdc_descriptor_config(comm_setting->desc, intf_comm->intf_num, data_setting->desc, intf_data->intf_num);
/* create a bulk in and a bulk endpoint */
data_desc = (ucdc_data_desc_t)data_setting->desc;
eps->ep_out = rt_usbd_endpoint_create(&data_desc->ep_out_desc, _ep_out_handler);
eps->ep_in = rt_usbd_endpoint_create(&data_desc->ep_in_desc, _ep_in_handler);
/* add the bulk out and bulk in endpoints to the data alternate setting */
rt_usbd_altsetting_add_endpoint(data_setting, eps->ep_in);
rt_usbd_altsetting_add_endpoint(data_setting, eps->ep_out);
/* add the data alternate setting to the data interface
then set default setting of the interface */
rt_usbd_interface_add_altsetting(intf_data, data_setting);
rt_usbd_set_altsetting(intf_data, 0);
/* add the cdc data interface to cdc class */
rt_usbd_class_add_interface(cdc, intf_data);
/* create a command endpoint */
comm_desc = (ucdc_comm_desc_t)comm_setting->desc;
eps->ep_cmd = rt_usbd_endpoint_create(&comm_desc->ep_desc, _ep_cmd_handler);
/* add the command endpoint to the cdc communication interface */
rt_usbd_altsetting_add_endpoint(comm_setting, eps->ep_cmd);
/* add the communication alternate setting to the communication interface,
then set default setting of the interface */
rt_usbd_interface_add_altsetting(intf_comm, comm_setting);
rt_usbd_set_altsetting(intf_comm, 0);
/* add the communication interface to the cdc class */
rt_usbd_class_add_interface(cdc, intf_comm);
return cdc;
}