mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-21 02:38:05 +11:00
1a6a549857
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.
16 lines
474 B
Plaintext
16 lines
474 B
Plaintext
( cmd arg1 arg2 -- r )
|
|
( Send a command that expects a R1 response, handling CS. )
|
|
: SDCMDR1 [ SDC_DEVID LITN ] (spie) _cmd 0 (spie) ;
|
|
|
|
( cmd arg1 arg2 -- r arg1 arg2 )
|
|
( Send a command that expects a R7 response, handling CS. A R7
|
|
is a R1 followed by 4 bytes. arg1 contains bytes 0:1, arg2
|
|
has 2:3 )
|
|
: SDCMDR7
|
|
[ SDC_DEVID LITN ] (spie)
|
|
_cmd ( r )
|
|
_idle 8 LSHIFT _idle + ( r arg1 )
|
|
_idle 8 LSHIFT _idle + ( r arg1 arg2 )
|
|
0 (spie)
|
|
;
|