199 lines
8.8 KiB
Arduino
199 lines
8.8 KiB
Arduino
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#if ARDUINO_USB_MODE
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#warning This sketch should be used when USB is in OTG mode
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void setup(){}
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void loop(){}
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#else
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#include "USB.h"
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#include "USBMSC.h"
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#if ARDUINO_USB_CDC_ON_BOOT
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#define HWSerial Serial0
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#define USBSerial Serial
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#else
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#define HWSerial Serial
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USBCDC USBSerial;
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#endif
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USBMSC MSC;
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#define FAT_U8(v) ((v) & 0xFF)
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#define FAT_U16(v) FAT_U8(v), FAT_U8((v) >> 8)
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#define FAT_U32(v) FAT_U8(v), FAT_U8((v) >> 8), FAT_U8((v) >> 16), FAT_U8((v) >> 24)
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#define FAT_MS2B(s,ms) FAT_U8(((((s) & 0x1) * 1000) + (ms)) / 10)
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#define FAT_HMS2B(h,m,s) FAT_U8(((s) >> 1)|(((m) & 0x7) << 5)), FAT_U8((((m) >> 3) & 0x7)|((h) << 3))
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#define FAT_YMD2B(y,m,d) FAT_U8(((d) & 0x1F)|(((m) & 0x7) << 5)), FAT_U8((((m) >> 3) & 0x1)|((((y) - 1980) & 0x7F) << 1))
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#define FAT_TBL2B(l,h) FAT_U8(l), FAT_U8(((l >> 8) & 0xF) | ((h << 4) & 0xF0)), FAT_U8(h >> 4)
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#define README_CONTENTS "This is tinyusb's MassStorage Class demo.\r\n\r\nIf you find any bugs or get any questions, feel free to file an\r\nissue at github.com/hathach/tinyusb"
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static const uint32_t DISK_SECTOR_COUNT = 2 * 8; // 8KB is the smallest size that windows allow to mount
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static const uint16_t DISK_SECTOR_SIZE = 512; // Should be 512
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static const uint16_t DISC_SECTORS_PER_TABLE = 1; //each table sector can fit 170KB (340 sectors)
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static uint8_t msc_disk[DISK_SECTOR_COUNT][DISK_SECTOR_SIZE] =
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{
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//------------- Block0: Boot Sector -------------//
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{
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// Header (62 bytes)
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0xEB, 0x3C, 0x90, //jump_instruction
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'M' , 'S' , 'D' , 'O' , 'S' , '5' , '.' , '0' , //oem_name
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FAT_U16(DISK_SECTOR_SIZE), //bytes_per_sector
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FAT_U8(1), //sectors_per_cluster
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FAT_U16(1), //reserved_sectors_count
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FAT_U8(1), //file_alloc_tables_num
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FAT_U16(16), //max_root_dir_entries
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FAT_U16(DISK_SECTOR_COUNT), //fat12_sector_num
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0xF8, //media_descriptor
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FAT_U16(DISC_SECTORS_PER_TABLE), //sectors_per_alloc_table;//FAT12 and FAT16
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FAT_U16(1), //sectors_per_track;//A value of 0 may indicate LBA-only access
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FAT_U16(1), //num_heads
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FAT_U32(0), //hidden_sectors_count
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FAT_U32(0), //total_sectors_32
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0x00, //physical_drive_number;0x00 for (first) removable media, 0x80 for (first) fixed disk
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0x00, //reserved
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0x29, //extended_boot_signature;//should be 0x29
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FAT_U32(0x1234), //serial_number: 0x1234 => 1234
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'T' , 'i' , 'n' , 'y' , 'U' , 'S' , 'B' , ' ' , 'M' , 'S' , 'C' , //volume_label padded with spaces (0x20)
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'F' , 'A' , 'T' , '1' , '2' , ' ' , ' ' , ' ' , //file_system_type padded with spaces (0x20)
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// Zero up to 2 last bytes of FAT magic code (448 bytes)
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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//boot signature (2 bytes)
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0x55, 0xAA
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},
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//------------- Block1: FAT12 Table -------------//
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{
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FAT_TBL2B(0xFF8, 0xFFF), FAT_TBL2B(0xFFF, 0x000) // first 2 entries must be 0xFF8 0xFFF, third entry is cluster end of readme file
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},
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//------------- Block2: Root Directory -------------//
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{
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// first entry is volume label
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'E' , 'S' , 'P' , '3' , '2' , 'S' , '2' , ' ' ,
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'M' , 'S' , 'C' ,
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0x08, //FILE_ATTR_VOLUME_LABEL
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0x00,
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FAT_MS2B(0,0),
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FAT_HMS2B(0,0,0),
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FAT_YMD2B(0,0,0),
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FAT_YMD2B(0,0,0),
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FAT_U16(0),
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FAT_HMS2B(13,42,30), //last_modified_hms
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FAT_YMD2B(2018,11,5), //last_modified_ymd
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FAT_U16(0),
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FAT_U32(0),
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// second entry is readme file
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'R' , 'E' , 'A' , 'D' , 'M' , 'E' , ' ' , ' ' ,//file_name[8]; padded with spaces (0x20)
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'T' , 'X' , 'T' , //file_extension[3]; padded with spaces (0x20)
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0x20, //file attributes: FILE_ATTR_ARCHIVE
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0x00, //ignore
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FAT_MS2B(1,980), //creation_time_10_ms (max 199x10 = 1s 990ms)
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FAT_HMS2B(13,42,36), //create_time_hms [5:6:5] => h:m:(s/2)
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FAT_YMD2B(2018,11,5), //create_time_ymd [7:4:5] => (y+1980):m:d
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FAT_YMD2B(2020,11,5), //last_access_ymd
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FAT_U16(0), //extended_attributes
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FAT_HMS2B(13,44,16), //last_modified_hms
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FAT_YMD2B(2019,11,5), //last_modified_ymd
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FAT_U16(2), //start of file in cluster
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FAT_U32(sizeof(README_CONTENTS) - 1) //file size
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},
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//------------- Block3: Readme Content -------------//
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README_CONTENTS
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};
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static int32_t onWrite(uint32_t lba, uint32_t offset, uint8_t* buffer, uint32_t bufsize){
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HWSerial.printf("MSC WRITE: lba: %u, offset: %u, bufsize: %u\n", lba, offset, bufsize);
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memcpy(msc_disk[lba] + offset, buffer, bufsize);
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return bufsize;
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}
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static int32_t onRead(uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize){
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HWSerial.printf("MSC READ: lba: %u, offset: %u, bufsize: %u\n", lba, offset, bufsize);
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memcpy(buffer, msc_disk[lba] + offset, bufsize);
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return bufsize;
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}
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static bool onStartStop(uint8_t power_condition, bool start, bool load_eject){
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HWSerial.printf("MSC START/STOP: power: %u, start: %u, eject: %u\n", power_condition, start, load_eject);
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return true;
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}
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static void usbEventCallback(void* arg, esp_event_base_t event_base, int32_t event_id, void* event_data){
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if(event_base == ARDUINO_USB_EVENTS){
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arduino_usb_event_data_t * data = (arduino_usb_event_data_t*)event_data;
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switch (event_id){
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case ARDUINO_USB_STARTED_EVENT:
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HWSerial.println("USB PLUGGED");
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break;
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case ARDUINO_USB_STOPPED_EVENT:
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HWSerial.println("USB UNPLUGGED");
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break;
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case ARDUINO_USB_SUSPEND_EVENT:
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HWSerial.printf("USB SUSPENDED: remote_wakeup_en: %u\n", data->suspend.remote_wakeup_en);
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break;
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case ARDUINO_USB_RESUME_EVENT:
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HWSerial.println("USB RESUMED");
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break;
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default:
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break;
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}
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}
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}
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void setup() {
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HWSerial.begin(115200);
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HWSerial.setDebugOutput(true);
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USB.onEvent(usbEventCallback);
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MSC.vendorID("ESP32");//max 8 chars
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MSC.productID("USB_MSC");//max 16 chars
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MSC.productRevision("1.0");//max 4 chars
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MSC.onStartStop(onStartStop);
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MSC.onRead(onRead);
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MSC.onWrite(onWrite);
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MSC.mediaPresent(true);
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MSC.begin(DISK_SECTOR_COUNT, DISK_SECTOR_SIZE);
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USBSerial.begin();
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USB.begin();
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}
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void loop() {
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// put your main code here, to run repeatedly:
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}
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#endif /* ARDUINO_USB_MODE */
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