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usb: device: Add usb_transfer_is_busy() function

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Add usb_transfer_is_busy() function to check if there is ongoing
transfer.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
This commit is contained in:
Andrei Emeltchenko 2019-04-17 14:02:48 +03:00 • committed by Anas Nashif
commit 2c672b92c8
2 changed files with 21 additions and 0 deletions
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10
include/usb/usb_device.h
View file

@ -418,6 +418,16 @@ int usb_transfer_sync(u8_t ep, u8_t *data, size_t dlen, unsigned int flags);
*/ */
void usb_cancel_transfer(u8_t ep); void usb_cancel_transfer(u8_t ep);
/**
* @brief Check that transfer is ongoing for the endpoint
*
* @param[in] ep Endpoint address corresponding to the one
* listed in the device configuration table
*
* @return true if transfer is ongoing, false otherwise.
*/
bool usb_transfer_is_busy(u8_t ep);
/** /**
* @brief Start the USB remote wakeup procedure * @brief Start the USB remote wakeup procedure
* *

11
subsys/usb/usb_device.c
View file

@ -1194,6 +1194,17 @@ static struct usb_transfer_data *usb_ep_get_transfer(u8_t ep)
return NULL; return NULL;
} }
bool usb_transfer_is_busy(u8_t ep)
{
struct usb_transfer_data *trans = usb_ep_get_transfer(ep);
if (trans && trans->status == -EBUSY) {
return true;
}
return false;
}
static void usb_transfer_work(struct k_work *item) static void usb_transfer_work(struct k_work *item)
{ {
struct usb_transfer_data *trans; struct usb_transfer_data *trans;