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NXPTM M522XX, KINETIS and i.MX RT / Re: combining applications & jumping between them (uTasker+ teensy 3.2).
« Last post by mark on March 15, 2022, 12:40:10 AM »Hi Alex
Thanks for the feedback - I am pleased to hear that the binary based technique proved to result in a solution.
As for the OSX slowness - I don't know anything specific except that it may be that it is loading the complete content of the disk (FAT and data?) to the computer so that it has a cache for faster (subsequent) operations. If you have a large card it may take some time as it is not a fast USB connection (a smaller card would, if this is the case, load faster).
You may find settings that control the amount of caching that the computer does (?)
Windows, which I know better, reads in some FAT tables to cache but may do a lot less and so show the disk faster.
However I don't know for sure and a USB analyser that understands MSD would be the best method to see what is happening and whether the delay is due to USB activity needing to first terminate, or not.
Regards
Mark
Thanks for the feedback - I am pleased to hear that the binary based technique proved to result in a solution.
As for the OSX slowness - I don't know anything specific except that it may be that it is loading the complete content of the disk (FAT and data?) to the computer so that it has a cache for faster (subsequent) operations. If you have a large card it may take some time as it is not a fast USB connection (a smaller card would, if this is the case, load faster).
You may find settings that control the amount of caching that the computer does (?)
Windows, which I know better, reads in some FAT tables to cache but may do a lot less and so show the disk faster.
However I don't know for sure and a USB analyser that understands MSD would be the best method to see what is happening and whether the delay is due to USB activity needing to first terminate, or not.
Regards
Mark