Difference: MicroSdBlocks (73 vs. 74)

Revision 742021-03-30 - PeterSchmid

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META TOPICPARENT name="WebHome"
%DASHBOARD{ section="banner"
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Serial Flash

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The STM32F405 Feather has an 2 MiB Serial Flash W25Q16 on board. The smallest erasable chunk of data is the 4 KiB sector. But the default SD block is 512 Bytes, that means if you want to write something to a not erased block you have to erase the whole sector. For this the sector has to be buffered in RAM. For details see:
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The STM32F405 Feather has a 2 MiB Serial Flash W25Q16 on board. The smallest erasable chunk of data is the 4 KiB sector. But the default FAT block is 512 Bytes, that means if you want to write something to a not erased block, you have to erase the whole sector. For this the sector has to be buffered in RAM. For details see:
 
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  Copy the the files and directories with cp or tar to the mounted image, e.g.

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# cd sd
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# cd sdcard
 # tar cf - etc fsr home man README.md | tar xvf - -C /mnt
 
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