CompactFlash diagnostics?

Started by Juergen Marquardt in comp.arch.embedded13 years ago

Customer asks for doing dioagnostics of an embedded system (X86 based, VC++). Part of system is a compact flash card. Any C (or C++) code...

Customer asks for doing dioagnostics of an embedded system (X86 based, VC++). Part of system is a compact flash card. Any C (or C++) code there to make some sort of diagnostics: - read/write/verify sectors - read CIS space - determine state of wear leveling - maybe more...? Juergen


CompactFlash-Disk with network connection...

Started by Thomas Obermair in comp.arch.embedded13 years ago

Hi All! We build devices that boot from Compact-Flash disks. For test-automation we'd like to have a disk, thats data content can be...

Hi All! We build devices that boot from Compact-Flash disks. For test-automation we'd like to have a disk, thats data content can be manipulated from "outside", but which behaves just like an ordinay CF-Disk when accessed from our device. I think that I once saw a "disk" with an ethernet-connector, where the actual data "on disk" comes from a network share. Unforunately I'm not able ...


PC104 question

Started by Anonymous in comp.arch.embedded15 years ago 1 reply

Hi, I am a PC104 newbie. I am trying to boot a PC104 using a Compactflash flash memory card. To do so, I first copied system files onto it...

Hi, I am a PC104 newbie. I am trying to boot a PC104 using a Compactflash flash memory card. To do so, I first copied system files onto it (from a Windows98 machine). I then used the flash card to boot the PC104, but encountered "Disk I/O error". Could someone let me know what could be wrong? Thanks, Niranjan


CompactFlash to PC parallel adapter: good for cannibalizing?

Started by Happy Segfault in comp.arch.embedded16 years ago 4 replies

Hi all, I've been looking into how to interface huge and cheap consumer flash memory cards with hobby projects powered by an AVR, PIC, or...

Hi all, I've been looking into how to interface huge and cheap consumer flash memory cards with hobby projects powered by an AVR, PIC, or MSP430. A lot of the advice seems to be to use MMC or SD memory cards in SPI I/O mode. That seems like a good approach, but (1) sockets for these cards might be hard for a new hobbyist like me to solder, and (2) I already have a bunch of CompactF...


SD Memory Card - Microcontroller Interface

Started by Anonymous in comp.arch.embedded15 years ago 5 replies

Hello, I don't have a particular project in mind, but it seems like having 512+MB of memory at my disposal for microcontroller projects would...

Hello, I don't have a particular project in mind, but it seems like having 512+MB of memory at my disposal for microcontroller projects would be quite amazing. From a few of the posts I've read, and the limited specs I could find, it seems like Secure Digital (SD) memory cards allow for an SPI interface (serial) and run anywhere from 0-25Mhz. (I've interfaced to CompactFlash cards and Car...


FAT16 help needed!!!

Started by Sean Whitesell in comp.arch.embedded16 years ago 30 replies

My code is writting data to a CompactFlash card. I can see the data with WinHex. But, windows does not acknowledge the file. I'm using the...

My code is writting data to a CompactFlash card. I can see the data with WinHex. But, windows does not acknowledge the file. I'm using the same functions as examples that work elsewhere in the project. I need help analyzing the FAT info to see where the problem is so I know where the problem lies in the code. I have read the FAT specs and compared my file to good files and the differences...


Compact flash transfer rate (w/microcontroller)

Started by Haldo in comp.arch.embedded15 years ago 26 replies

Hi all, in a previous thread we discussed about MMC timings and write speed. These memory do not seem to guarantee a minimum sustained write...

Hi all, in a previous thread we discussed about MMC timings and write speed. These memory do not seem to guarantee a minimum sustained write bandwidth. I was thinking of migrating to CompactFlash (more pins, but seem faster). Producers claim a very high sustained write speed (> 1MB/sec), but I'm not so confident to obtain such values. Can someone, according to its experience, comment on


CompactFlash and Microchip Dspic ready problem

Started by Anonymous in comp.arch.embedded14 years ago 5 replies

Hi! I hope somebody can help me with this problem or at least give me som suggestion how to solve it. I have a DSPIC CPU conected to at CF to...

Hi! I hope somebody can help me with this problem or at least give me som suggestion how to solve it. I have a DSPIC CPU conected to at CF to store Data of course. To save power the CF power is turned off where ever it is possible. Power on sequense is as follows. CF_WE=1 CF_OE=1 TRISD=TRISD_CF_ON TRISG=TRISG_CF_ON CF_ON=0 nop() nop() CF_CS1=1 Next i wait for CF_READY signal to ...


USB Bulk Only code help needed

Started by Sean W in comp.arch.embedded16 years ago 3 replies

I have an Atmel 8051 chip with a USB peripheral inside the chip. Sample code was given along with the chip. It uses Bulk Only transfer. When...

I have an Atmel 8051 chip with a USB peripheral inside the chip. Sample code was given along with the chip. It uses Bulk Only transfer. When the demo board is plugged into the PC, a drive letter gets created and it sees the files on the CompactFlash. My question is, how and where can I tap into the code and parse out data from our desktop application instead of windows? There is code for...


Low cost SBC with IDE interface

Started by Jim in comp.arch.embedded16 years ago 2 replies

Hello, I am looking for a small SBC that includes serial, Ethernet, and an IDE interface for connection to a CompactFlash or disk drive. I...

Hello, I am looking for a small SBC that includes serial, Ethernet, and an IDE interface for connection to a CompactFlash or disk drive. I have been using an AVR based board from EDTP, but it has been discontinued. I am not wed to AVR. Coldfire, ARM, x86, or whatever works is fine. I would prefer a board with solid support for the GNU toolchain. The board need not include an OS or f...


Minimum Pin Count For CompactFlash access

Started by Rufus V. Smith in comp.arch.embedded14 years ago 2 replies

This is closely tied to my other thread about using Compact Flash in True IDE mode. The main goal is minimum pincount. The True IDE mode...

This is closely tied to my other thread about using Compact Flash in True IDE mode. The main goal is minimum pincount. The True IDE mode was chosen for minimum pins (3 address, 8 data, -CS -IORD, -IORW, INTRQ, and -IORDY). Off the top of my head. In reading the spec, I get the impression that you can also use either PC Memory or PC I/O mode with less than the full complement (11) of ad...


CompactFlash write speed

Started by A.D. in comp.arch.embedded11 years ago 4 replies

Hi all! I'm designing a high speed datalogger that should store a continuous data stream (about 2MB/s) for about 30 minutes. I'm using a...

Hi all! I'm designing a high speed datalogger that should store a continuous data stream (about 2MB/s) for about 30 minutes. I'm using a Compact Flash card to store data samples (no FAT, just raw data with a continuous addressing, in order to keep all as fast as possible). The CF I tested is rated 66X (i.e. about 10MB/s), and the micro (an AVR) can sustain a write speed greater than 4MB/s....


LBA mode switching on my compactflash

Started by nono...@altern.org in comp.arch.embedded15 years ago 3 replies

Hi all, I'm successfully using a CF on my design with CHS mode addressing for weeks, but when i'm trying to access it in LBA mode (by setting...

Hi all, I'm successfully using a CF on my design with CHS mode addressing for weeks, but when i'm trying to access it in LBA mode (by setting the LBA bit (6) in the HEAD register before sending 0x20 command), for retrieving the boot sector (LBA=0) for example, i'm not getting the boot sector while CHS addressing is ok. Any help ?


CF Cards, status register, consequences of CORR bit?

Started by Markus Zingg in comp.arch.embedded15 years ago 2 replies

Hi Group The CompactFlash specification (section 6.1.5.9 in the CF2 specs) denotes the CORR bit in the status register. Acording to the...

Hi Group The CompactFlash specification (section 6.1.5.9 in the CF2 specs) denotes the CORR bit in the status register. Acording to the specs, the bit is set "when a Correctable data error has been encountered and the data has been corrected." A subsequent write to a sector showing this behaviour make the bit go off (seem to correct the "problem"). So far so good, but every now and th...


Forcing a FAT16 format onto a 4MB FAT12 CompactFlash card

Started by Ben Nguyen in comp.arch.embedded16 years ago 7 replies

I have a 4MB card formatted with FAT12 and the code Ive inherited is for FAT16. I bought a USB CF Card reader so that Windows XP/DOS...

I have a 4MB card formatted with FAT12 and the code Ive inherited is for FAT16. I bought a USB CF Card reader so that Windows XP/DOS could format it, but it also formats it to FAT12. Is there any way to force a 4MB (currently FAT12) CF to FAT16. I now its not as efficient, but it would make things much easier for development. Ben


compact flash and pcmcia uC interfacing

Started by Rick in comp.arch.embedded16 years ago 2 replies

I have been reading the compact flash 2.0 spec from compactflash.org but I am a bit confused as to which would be the best mode for interfacing...

I have been reading the compact flash 2.0 spec from compactflash.org but I am a bit confused as to which would be the best mode for interfacing to the 16 bit data bus of an atmel arm7 processor (The 40008 in this case). It looks like memory mode would work, and I read the circuit cellar article in the feb 2001 issue about interfacing a pic to a cf via 3 address lines and 8 data lines and a...


Large drive without partitions

Started by Darin Johnson in comp.arch.embedded12 years ago 10 replies

I've got a wierd problem that maybe someone here may have run into. Windows related but tied to embedded file systems. We've got a third party...

I've got a wierd problem that maybe someone here may have run into. Windows related but tied to embedded file systems. We've got a third party file system on large USB hard drives and small CompactFlash with our embedded system. We've got a Windows driver for the file system which we can use for convenience. We have not been putting any partition tables or MBR on the large hard drives (t...


[FS] gumstix 400xm kits w/MA701 WiFi card, CrystalFontz LCDs

Started by Anonymous in comp.arch.embedded14 years ago 3 replies

Hello group. I am selling a couple of gumstix kits on eBay. They have received very little use. They include the main 400xm gumstix board,...

Hello group. I am selling a couple of gumstix kits on eBay. They have received very little use. They include the main 400xm gumstix board, a cfstix, audiostix AC97 and tweener boards. Comes with both serial and null-modem cables, wall adapter and a Netgear MA701 WiFi CompactFlash card. All you need to build your custom wireless solution! Check out the following links: http://cgi....


Help please: PC Card Standard Release 8.0: Volume 2, Card Electrical

Started by Tim Clacy in comp.arch.embedded16 years ago 3 replies

I urgently need memory cycle timings for CompactFlash, which are defined in the PC Card specification (formerly PCMCIA). However, I'm having...

I urgently need memory cycle timings for CompactFlash, which are defined in the PC Card specification (formerly PCMCIA). However, I'm having trouble ordering the 13 volume PC Card specification (nobody home at PCMCIA.org). If you have the specification, I would be most grateful if you could provide the common memory read and write waveform timings for 100ns, 150ns, 200ns and 250ns cycle tim...


ARM Eval board "Mate" to a PDA !!!

Started by werty in comp.arch.embedded13 years ago

www.littlechips.com has a $300 Eval board using the PDA CPU ARM / Samsung 2410 ( aka 920T) 256BGA !! Samsung wanted $1000 a year ...

www.littlechips.com has a $300 Eval board using the PDA CPU ARM / Samsung 2410 ( aka 920T) 256BGA !! Samsung wanted $1000 a year ago ! -------------------------------------------- This board has all h/w needed to upgrade . 2.5" HDD (IDE)/ CD-ROM support USB A/B cnntr with Host/Dev ( aka UHP/UDP ) RJ45 Ethernet 10Mbps Ethernet CompactFlash /SD Card Conector ...