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/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* This file is part of the TinyUSB stack.
*/
#ifdef __RTTHREAD__
#include <tusb.h>
#include <stdint.h>
#include <board.h>
#include <rtdevice.h>
static bool ejected = false;
static rt_device_t flash_device;
static struct rt_device_blk_geometry blk_geom;
#ifdef __CC_ARM
uint16_t __builtin_bswap16(uint16_t x)
{
return (x << 8) | (x >> 8);
}
#endif
void tud_msc_inquiry_cb(uint8_t lun, uint8_t vendor_id[8], uint8_t product_id[16], uint8_t product_rev[4])
{
(void) lun;
const char vid[] = PKG_TINYUSB_DEVICE_MSC_VID;
const char pid[] = PKG_TINYUSB_DEVICE_MSC_PID;
const char rev[] = PKG_TINYUSB_DEVICE_MSC_REV;
strncpy((char*) vendor_id, vid, 8);
strncpy((char*) product_id, pid, 16);
strncpy((char*) product_rev, rev, 4);
}
bool tud_msc_test_unit_ready_cb(uint8_t lun)
{
(void) lun;
if (ejected)
{
tud_msc_set_sense(lun, SCSI_SENSE_NOT_READY, 0x3a, 0x00);
return false;
}
if (flash_device == NULL)
{
flash_device = rt_device_find(PKG_TINYUSB_DEVICE_MSC_NAME);
}
if (flash_device != NULL)
{
static uint8_t open_flg = 0;
if (!open_flg)
{
open_flg = 1;
rt_device_open(flash_device, 0);
}
rt_device_control(flash_device, RT_DEVICE_CTRL_BLK_GETGEOME, &blk_geom);
return true;
}
return false;
}
void tud_msc_capacity_cb(uint8_t lun, uint32_t *block_count, uint16_t *block_size)
{
(void) lun;
*block_count = blk_geom.sector_count;
*block_size = blk_geom.bytes_per_sector;
}
bool tud_msc_start_stop_cb(uint8_t lun, uint8_t power_condition, bool start, bool load_eject)
{
(void) lun;
(void) power_condition;
if (load_eject)
{
if (start)
{
ejected = false;
} else {
// unload disk storage
ejected = true;
}
}
return true;
}
int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void *buffer, uint32_t bufsize)
{
(void) lun;
(void) offset;
(void) bufsize;
return (int32_t) rt_device_read(flash_device, (rt_off_t) lba, buffer, 1) * blk_geom.bytes_per_sector;
}
int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t *buffer, uint32_t bufsize)
{
(void) lun;
(void) offset;
(void) bufsize;
return (int32_t) rt_device_write(flash_device, (rt_off_t) lba, buffer, 1) * blk_geom.bytes_per_sector;
}
int32_t tud_msc_scsi_cb(uint8_t lun, uint8_t const scsi_cmd[16], void *buffer, uint16_t bufsize)
{
void const *response = NULL;
uint16_t resplen = 0;
// most scsi handled is input
bool in_xfer = true;
switch (scsi_cmd[0])
{
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
// Host is about to read/write etc ... better not to disconnect disk
resplen = 0;
break;
default:
// Set Sense = Invalid Command Operation
tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);
// negative means error -> tinyusb could stall and/or response with failed status
resplen = -1;
break;
}
// return resplen must not larger than bufsize
if (resplen > bufsize) resplen = bufsize;
if (response && (resplen > 0))
{
if (in_xfer)
{
memcpy(buffer, response, resplen);
} else {
// SCSI output
}
}
return resplen;
}
#endif /*__RTTHREAD__*/
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