The driver does not make use of the hardware chip select lines because of some limitations - instead it can use an arbitrary number of GPIOs as software/GPIO chip selects. This means you are free to choose any spare GPIO as a CS line, and all of these SPI overlays include that control - see /boot/overlays/README for details, or run (for example) dtoverlay -h spi0-2cs (dtoverlay -a grep spi might be helpful to list them all).
ASCII Art Maker 1.6-serial Incl Setup Free
Download: https://shoxet.com/2vKDcr
A freelist trunk page consists of an array of 4-byte big-endian integers.The size of the array is as many integers as will fit in the usable spaceof a page. The minimum usable space is 480 bytes so the array will alwaysbe at least 120 entries in length. The first integer on a freelist trunkpage is the page number of the next freelist trunk page in the list or zero if this is the last freelist trunk page. The second integer on a freelisttrunk page is the number of leaf page pointers to follow. Call the second integer on a freelist trunk page L.If L is greater than zero then integers with array indexes between 2 andL+1 inclusive contain page numbers for freelist leaf pages.
A freeblock is a structure used to identify unallocated space withina b-tree page. Freeblocks are organized as a chain. The first 2 bytes ofa freeblock are a big-endian integer which is the offset in the b-tree pageof the next freeblock in the chain, or zero if the freeblock is the last onthe chain. The third and fourth bytes of each freeblock forma big-endian integer which is the size of the freeblock in bytes, includingthe 4-byte header. Freeblocks are always connected in order of increasing offset. The second field of the b-tree page header is theoffset of the first freeblock, or zero if there are no freeblocks on thepage. In a well-formed b-tree page, there will always be at least one cellbefore the first freeblock. 2ff7e9595c
Comments