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Forum Index : Microcontroller and PC projects : Micromite eXtreme V5.3.06: Long filenames
| Author | Message | ||||
| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 8605 |
 Please download the new release from here This is a major change to the software that completely swaps the file system handling in order to support long filenames. The original file system routines were provided by Microchip but in the latest release of their demo apps they have moved to Chan's open source routines so it looks like they won't be supporting their code going forward. Chan's code has established itself as the default for FAT file handling and Geoff is also likely to move to this in a future release. Not only is the new code future-proof and properly open-source but it is also much faster that the original code. The H/W interface routines are not part of FatFs but are provided by the developer to suit the platform. I've developed and tuned these routines as part of the MMX code such that the time taken to save a 640x480 image to disk has reduced from 8.5 seconds under the Microchip code to 0.62 seconds now. As this is a major change, bugs are to be expected so please report findings so I can find and fix them |
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CaptainBoing Guru Joined: 07/09/2016 Location: United KingdomPosts: 1995 |
stunned! Simply stunned! do you ever sleep Peter?  |
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Zonker Guru Joined: 18/08/2012 Location: United StatesPosts: 761 |
Wow.. This is an amazing speed change in the file system...!! Thanks Peter for all your time and hard work for us..!!  |
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9082 |
...jaw hits the floor......  Is this ever expected to be ported to the MM+ chips or only ever going to be a MMX feature? Smoke makes things work. When the smoke gets out, it stops! |
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| CaptainBoing Guru Joined: 07/09/2016 Location: United KingdomPosts: 1995 |
this is a really good point - can this be released as a series of CSubs/Functions? This would nice to have in smaller 5.2 based projects. |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 8605 |
Geoff is looking to include this in 5.4 assuming it continues to perform on the MMX. I've just found one more optimisation for reading and can now load a 800x480 full colour image from SDcard and display it on the SSD1963 screen in 0.833 seconds This equates to just under 1.4Mbytes/second read and written This will be included in the next MMX release. |
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lew247 Guru Joined: 23/12/2015 Location: United KingdomPosts: 1676 |
Is that .bmp or .ppm files? |
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| robert.rozee Guru Joined: 31/12/2012 Location: New ZealandPosts: 2294 |
roughly how much flash space does FatFs take up? on the MX170 it would be useful as something that could be loaded into the library for those who needed SD card support. just a subset of the fatfs functions would suffice, no need for nice wrappers to make it look basic-like. even if it was a custom function that took up 16k or more of flash in the library area, with a primative application interface, it would be extremely useful. cheers, rob :-) |
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