Problem FatFS architecture Demonstration Benchmark Closing

Transcription

1 June 23, 2011 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, t he Energy Efficient Solutions logo, mobilegt, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners Freescale Semiconductor, Inc.

2 Problem FatFS architecture Demonstration Benchmark Closing Freescale on Facebook Tag yourself in photos and upload your own! Tweeting? Please use hashtag #FTF Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

3 Need to load/store/share large data amounts Configuration data Data logging Pictures and images Web page content Exchange data with host Scalability 8-bit to 32-bit processors Small/larger RAM targets Cost-effective SD card, microsd 3 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

4 Unmanned aircraft system Magnetic flux sensor Data logger Position (GPS coordinates) Gyro (GPS + accelerometer) Time (GPS + local clock) Magnetic flux information 4 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

5 Helicopter GPS (pos, t) Load Fluxgate Sensor Gyro, GPS A RS-232 Sync A/D Ch 1 Ch 2 Ch 3 SPI Electronic TOWER CN128 RTOS FatFs Shell I 2 C SPI Battery RTC SD Card RS-232 Host 5 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

6 Freescale MQX MQX File System (MFS) Many open source implementations EFSL ( Netlabs FAT32 ( FatFs and Petit FatFs ( 6 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

7 Unlimited number of open files (limited by memory) Up to 10 volumes Long file name support Limits File size: up to 4 GB Volume size: up to 2 TB with 512 bytes/sector Cluster size: up to 64 KB with 512 bytes/sector Sector size: up to 4 KB FAT limitations FAT12 (212 clusters, up to 16 MB) FAT16 (216 clusters, up to 2 GB/4 GB) FAT32 (228 clusters, up to 8 TB) 7 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

8 Application FatFs [RTOS] Low-level Disk I/O (HW SPI, SW SPI ) [RTC] Memory 8 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

9 Application disk_initialize - Initialize disk drive disk_status - Get disk status disk_read - Read sector(s) disk_write - Write sector(s) disk_ioctl - Control device dependent features get_fattime - Get current time FatFs Low-level Disk I/O Memory [RTOS] [RTC] 9 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

10 f_mount - Register/unregister a work area f_open - Open/create a file f_close - Close a file f_read - Read file f_write - Write file f_lseek - Move read/write pointer, expand file size f_truncate - Truncate file size f_sync - Flush cached data f_opendir - Open a directory f_readdir - Read a directory item f_getfree - Get free clusters f_stat - Get file status f_mkdir - Create a directory f_unlink - Remove a file or directory f_chmod - Change attribute f_utime - Change timestamp Application FatFs Low-level Disk I/O Memory [RTOS] [RTC] 10 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

11 f_rename - Rename/move a file or directory f_mkfs - Create a file system on the drive f_forward - Forward file data to the stream directly f_chdir - Change current directory f_chdrive - Change current drive f_getcwd - Retrieve the current directory f_gets - Read a string f_putc - Write a character f_puts - Write a string f_printf - Write a formatted string f_tell - Get the current read/write pointer f_eof - Test for end-of-file on a file f_size - Get size of a file f_error - Test for an error on a file Application FatFs Low-level Disk I/O Memory [RTOS] [RTC] 11 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

12 Only restriction: distribution of source code must retain copyright notice But: be aware of Microsoft patent! /* / / FatFs - FAT file system module R0.08b (C)ChaN, 2011 / / / FatFs module is a generic FAT file system module for small embedded systems. / This is a free software that opened for education, research and commercial / developments under license policy of following terms. / / Copyright (C) 2011, ChaN, all right reserved. / / * The FatFs module is a free software and there is NO WARRANTY. / * No restriction on use. You can use, modify and redistribute it for / personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY. / * Redistributions of source code must retain the above copyright notice. / / / 12 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

13 FAT has been standardized ECMA-107, ISO/IEC 9293 Covers FAT12 and FAT16 without long file names Long file names Partially patented by Microsoft (U.S. Patent ) Patent infringement lawsuits Feb 2009: Microsoft against TomTom (FAT32 in Linux) Oct 2010: Microsoft against Motorola (FAT32 in Android) Engineering conclusion not(!) legal advice: Use FatFs without long files Using long file names/fat32 may require a license/agreement from Microsoft 13 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

14 Goal Read from SD card Write to SD card Shell support CodeWarrior for MCU 10.1 TWR-MCF51CN128 TWR-SERIAL TWR-MEM Creating project from scratch Using Processor Expert 14 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

15 TWR-MCF51CN128 Application FatFs Low-level Disk I/O (HW SPI) RTOS RTC FSShell Term SCI TWR-MEM TWR-SERIAL Memory (SD Card) Host 15 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

16 Application FreeRTOS FSShell FatFS Util Event SDCard RTC Term Trigger Wait HWSPI SCI HAL Components CPU 16 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

17 File > New Project 17 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

18 Select MCF51CN Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

19 Select P&E Open Source BDM 19 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

20 Default settings/next for: Add files ColdFire build options Select Processor Expert 20 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

21 Select CLK pin variant Select Debug target Click Finish 21 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

22 SPI 400 khz/12 MHz clock MSB first Idle clock low Bus sharable FsShell FatFS SDCard HWSPI 22 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

23 FsShell 512 bytes block size Ready Timeout 500ms Cmd Timeout 50 ms Block Rx timeout 500ms FatFS SDCard HWSPI 23 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

24 Volumes, block size, LFN Tiny, read-only Relative path support Optional RTOS (reentrancy) Real-time clock (write) FsShell FatFS SDCard HWSPI 24 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

25 Shell interface Status Read/write Dump disk sectors FsShell FatFS SDCard HWSPI 25 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

26 CMD> dir Directory of 0:/ ----A : A : A :03 3 File(s), bytes total 0 Dir(s), KBytes free CMD> diskinfo DATA00.BIN GYRO00.MTB GYRO01.MTB Card type : SD2 SDC version : SDC ver 1.XX or MMC Sector count : Sector size : 512 READ_BL_LEN : 1024 Block size : 8192 CSD : 00 7F B0 32 5F 5A 83 C0 F6 DB DF FF 8E CID : E D 6B 45 E9 00 A8 2F Manufacturer SN02G[12] Serial Number 6B45E90 OCR : 80 FF SD Status : Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

27 static porttask_function(maintask, pvparameters) { char_t cmd_buf[32]; bool cardmounted = FALSE; static FAT1_FATFS filesystemobject; } (void)pvparameters; /* parameter not used */ /* print help and prompt */ (void)fssh1_parsecmdstdio(fssh1_cmd_help, ParseCommand); for(;;) { FSSH1_ReadAndParseCmdStdIO(cmd_buf, sizeof(cmd_buf), ParseCommand /* local cmd parser */); (void)fssh1_checkcardpresence(&cardmounted, 0 /* volume */, &filesystemobject, FSSH1_GetStdio()); FRTOS1_vTaskDelay(10/portTICK_RATE_MS); } 27 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

28 10 ms timer, RTC (R/W only), write file (R/W only), read file R/W: mount(), open(), write(), close(), open(), read(), close() R/O: mount(), open(), read(), close() MCF51CN128 text (R/W) text (R/O) 7116 Work area (_FS_TINY==0) V*560 + F*550 Work area (_FS_TINY==1) V*560 + F*36 28 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

29 Use case Overview of FatFS Architecture Demonstration Session materials will be Look for announcements in the FTF Group on LinkedIn or follow Freescale on Twitter 29 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

30 FatFS Freescale Tower Systems Freescale CodeWarrior Freescale Blogs Session materials will be Look for announcements in the FTF Group on LinkedIn or follow Freescale on Twitter 30 Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, SMAROS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc.

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