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collapseos/blk/432

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Optimize SD card subsystem a bit
2020-10-30 12:03:11 +11:00
: _ ( dstaddr blkno -- )
Make the SPI Relay protocol support multiple devices Working on programming AVR chips exposes a glaring omission in my first design of the SPI Relay: not allowing multiple devices make this task hard. I constantly have to unplug my SD card before, plug the AVR chip holder, then play a bit, then unplug the AVR holder, then replug the SD card... My prototype for a SPI relay design is built, but I haven't tested it yet. I need to adapt the code first, which is what I do here. When the prototype is tested, I'll update the SDC recipe with a new schema.
2020-09-17 23:36:16 +10:00
[ SDC_DEVID LITN ] (spie)
0x51 ( CMD17 ) 0 ROT ( a cmd 0 blkno ) _cmd
Copy sdc driver to blkfs
2020-04-24 03:55:00 +10:00
IF _err THEN
_wait 0xfe = NOT IF _err THEN
0 SWAP ( crc a )
512 0 DO ( crc a )
Optimize SD card subsystem a bit
2020-10-30 12:03:11 +11:00
_idle ( crc a n )
DUP ROT C!+ ( crc n a+1 )
ROT> _crc16 ( a+1 crc )
SWAP ( crc a+1 )
Copy sdc driver to blkfs
2020-04-24 03:55:00 +10:00
LOOP
DROP ( crc1 )
Add words RSHIFT and LSHIFT
2020-05-08 05:40:10 +10:00
_idle 8 LSHIFT _idle + ( crc2 )
Make the SPI Relay protocol support multiple devices Working on programming AVR chips exposes a glaring omission in my first design of the SPI Relay: not allowing multiple devices make this task hard. I constantly have to unplug my SD card before, plug the AVR chip holder, then play a bit, then unplug the AVR holder, then replug the SD card... My prototype for a SPI relay design is built, but I haven't tested it yet. I need to adapt the code first, which is what I do here. When the prototype is tested, I'll update the SDC recipe with a new schema.
2020-09-17 23:36:16 +10:00
_wait DROP 0 (spie)
Copy sdc driver to blkfs
2020-04-24 03:55:00 +10:00
= NOT IF _err THEN ;