msc.h

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/*
 * Copyright (C) 2019-2021 Mesotic SAS
 *
 * This file is subject to the terms and conditions of the GNU Lesser General
 * Public License v2.1. See the file LICENSE in the top level directory for
 * more details.
 *
 *
 */
 
#pragma once

 
#include <stdint.h>
#include "usb/usbus.h"
#include "usb/usbus/msc/scsi.h"
#include "mtd.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#if defined(MODULE_PERIPH_USBDEV_HS_UTMI) || defined(MODULE_PERIPH_USBDEV_HS_ULPI)
#define USBUS_MSC_EP_DATA_SIZE  512
#else
#define USBUS_MSC_EP_DATA_SIZE  64
#endif

#define USBUS_MSC_EP_IN_REQUIRED_NUMOF   1

#define USBUS_MSC_EP_OUT_REQUIRED_NUMOF  1

typedef enum {
    WAITING,            
    WAIT_FOR_TRANSFER,  
    DATA_TRANSFER_IN,   
    DATA_TRANSFER_OUT,  
    GEN_CSW             
} usbus_msc_state_t;

typedef struct usbus_msc_lun {
    mtd_dev_t *mtd;         
    uint32_t block_nb;      
    uint32_t block_size;    
} usbus_msc_lun_t;

typedef struct usbus_msc_device {
    usbus_handler_t handler_ctrl;    
    usbus_interface_t iface;         
    usbus_endpoint_t *ep_in;         
    usbus_endpoint_t *ep_out;        
    uint8_t *out_buf;                
    uint8_t *in_buf;                 
    usbus_descr_gen_t msc_descr;     
    usbus_t *usbus;                  
    cbw_info_t cmd;                  
    event_t rx_event;                
    usbus_msc_state_t state;         
    uint8_t *buffer;                 
    uint32_t buffer_size;            
    uint32_t block;                  
    uint16_t block_nb;               
    uint16_t block_offset;           
    usbus_msc_lun_t *lun_dev;        
} usbus_msc_device_t;

 
int usbus_msc_init(usbus_t *usbus, usbus_msc_device_t *handler);

int usbus_msc_add_lun(usbus_t *usbus, mtd_dev_t *dev);

int usbus_msc_remove_lun(usbus_t *usbus, mtd_dev_t *dev);
 
#ifdef __cplusplus
}
#endif