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usbshm.h

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    Carl Philipp Klemm authored
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    usbshm.h 2.97 KiB
    /* * Copyright (c) 2023 Carl Klemm <carl@uvos.xyz>
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without modification,
     * are permitted provided that the following conditions are met:
     *
     *  * Redistributions of source code must retain the above copyright notice, this
     * list of conditions and the following disclaimer.
     *  * Redistributions in binary form must reproduce the above copyright notice,
     * this list of conditions and the following disclaimer in the documentation and/or
     * other materials provided with the distribution.
     *  * Neither the name of %ORGANIZATION% nor the names of its contributors may be
     * used to endorse or promote products derived from this software without specific
     * prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
     * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    
    #include <libusb-1.0/libusb.h>
    #include <pthread.h>
    #include <stdatomic.h>
    #include <stdint.h>
    #include <time.h>
    #include <stdbool.h>
    
    struct usbshm_priv;
    
    enum {
    	USBSHM_ERROR_AGAIN = -1,
    	USBSHM_ERROR_PARAM = -2,
    	USBSHM_ERROR_ERR = -3,
    	USBSHM_ERROR_NOT_CONNECTED = -4,
    };
    
    struct usbshm {
    	struct usbshm_priv* priv;
    	int vendorID;
    	int productID;
    	unsigned char* serial;
    	void* user_data;
    	void (*dataCallback)(uint8_t request, unsigned char* data, size_t length, void* user_data);
    };
    
    void usbshm_distroy(struct usbshm* instance);
    
    int usbshm_init(struct usbshm* instance, void (*dataCallback)(uint8_t request, unsigned char* data, size_t length, void* user_data), void* user_data);
    
    bool usbshm_ready(struct usbshm* instance);
    
    int usbshm_open(struct usbshm* instance, int vendorID, int productID, const unsigned char* serial);
    
    bool usbshm_isOpen(struct usbshm* instance);
    
    void usbshm_reset(struct usbshm* instance);
    
    void usbshm_reopen(struct usbshm* instance);
    
    int usbshm_writeControlTransfer(struct usbshm* instance, const uint8_t request, 
    								char* buffer, const uint8_t length, 
    								const uint16_t wValue, const uint16_t wIndex);
    
    int usbshm_readControlTransfer(struct usbshm* instance, const uint8_t request, const uint16_t wValue, const uint16_t wIndex, const uint16_t length);
    
    int usbshm_readControlTransferSync(struct usbshm* instance, const uint8_t request, const uint16_t wValue, const uint16_t wIndex, uint8_t* buffer, const uint16_t length);