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usbus: add find_endpoint function for interfaces

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This commit is contained in:
Koen Zandberg 2019-10-23 09:58:08 +02:00
parent 0bbb114ec6
commit b32ec6b864
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GPG Key ID: BA1718B37D79F51C
2 changed files with 30 additions and 0 deletions
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18
sys/include/usb/usbus.h
View File

@ -427,6 +427,24 @@ uint16_t usbus_add_string_descriptor(usbus_t *usbus, usbus_string_t *desc,
*/
uint16_t usbus_add_interface(usbus_t *usbus, usbus_interface_t *iface);
/**
* @brief Find an endpoint from an interface based on the endpoint properties
*
* This iterates over the endpoints in an interface and will return the first
* endpoint from the interface matching the @p type and @p dir. It will return
* NULL when no matching endpoint is found.
*
* @param[in] interface interface to look in
* @param[in] type endpoint type to match
* @param[in] dir endpoint direction to match
*
* @return ptr to the first matching endpoint
* @return NULL when no endpoint is found
*/
usbus_endpoint_t *usbus_interface_find_endpoint(usbus_interface_t *interface,
usb_ep_type_t type,
usb_ep_dir_t dir);
/**
* @brief Add an endpoint to the specified interface
*

12
sys/usb/usbus/usbus.c
View File

@ -127,6 +127,18 @@ void usbus_register_event_handler(usbus_t *usbus, usbus_handler_t *handler)
*last = handler;
}
usbus_endpoint_t *usbus_interface_find_endpoint(usbus_interface_t *interface,
usb_ep_type_t type,
usb_ep_dir_t dir)
{
for (usbus_endpoint_t *uep = interface->ep; uep; uep = uep->next) {
if (uep->ep->type == type && uep->ep->dir == dir) {
return uep;
}
}
return NULL;
}
usbus_endpoint_t *usbus_add_endpoint(usbus_t *usbus, usbus_interface_t *iface,
usb_ep_type_t type, usb_ep_dir_t dir,
size_t len)