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Ignore:
Timestamp:
2011-04-14T10:03:20Z (12 years ago)
Author:
Vojtech Horky <vojtechhorky@…>
Branches:
lfn, master, serial
Children:
5e168be1
Parents:
5e07e2b5
Message:

Generalized automatic device polling

File:
1 edited

Legend:

Unmodified
Added
Removed
  • uspace/lib/usb/include/usb/devpoll.h

    r5e07e2b5 r8989f48f  
    3737
    3838#include <usb/devdrv.h>
     39#include <time.h>
     40
     41typedef struct {
     42        /** Maximum number of consecutive errors before polling termination. */
     43        size_t max_failures;
     44        /** Delay between poll requests in milliseconds.
     45         * Set to negative value to use value from endpoint descriptor.
     46         */
     47        int delay;
     48        /** Whether to automatically try to clear the HALT feature after
     49         * the endpoint stalls.
     50         */
     51        bool auto_clear_halt;
     52        /** Callback when data arrives.
     53         *
     54         * @param dev Device that was polled.
     55         * @param data Data buffer (in USB endianness).
     56         * @param data_size Size of the @p data buffer in bytes.
     57         * @param arg Custom argument.
     58         * @return Whether to continue in polling.
     59         */
     60        bool (*on_data)(usb_device_t *dev, uint8_t *data, size_t data_size,
     61            void *arg);
     62        /** Callback when polling is terminated.
     63         *
     64         * @param dev Device where the polling was terminated.
     65         * @param due_to_errors Whether polling stopped due to several failures.
     66         * @param arg Custom argument.
     67         */
     68        void (*on_polling_end)(usb_device_t *dev, bool due_to_errors,
     69            void *arg);
     70        /** Callback when error occurs.
     71         *
     72         * @param dev Device where error occurred.
     73         * @param err_code Error code (as returned from usb_pipe_read).
     74         * @param arg Custom argument.
     75         * @return Whether to continue in polling.
     76         */
     77        bool (*on_error)(usb_device_t *dev, int err_code, void *arg);
     78} usb_device_auto_polling_t;
     79
     80int usb_device_auto_polling(usb_device_t *, size_t, usb_device_auto_polling_t *,
     81    size_t, void *);
    3982
    4083typedef bool (*usb_polling_callback_t)(usb_device_t *,
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