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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 )
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( Send a command that expects a R1 response, handling CS. )
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: SDCMDR1 [ SDC_DEVID LITN ] (spie) _cmd 0 (spie) ;
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( cmd arg1 arg2 -- r arg1 arg2 )
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( Send a command that expects a R7 response, handling CS. A R7
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is a R1 followed by 4 bytes. arg1 contains bytes 0:1, arg2
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has 2:3 )
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: SDCMDR7
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[ SDC_DEVID LITN ] (spie)
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_cmd ( r )
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_idle 8 LSHIFT _idle + ( r arg1 )
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_idle 8 LSHIFT _idle + ( r arg1 arg2 )
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0 (spie)
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;
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