Spin2 cog start/stop

Comments

• Ariba Posts: 2,693

  2020-08-25 23:29

  Spin2 has no cognew, it's all done with coginit.

  instead of:
      cog := cognew(@PWM_Asm, @command)
  use:
      cog := coginit(16, @PWM_Asm, @command)
  

  16 means the first free cog is allocated, you can also start a specific cog if you use 0..7 instead of 16.
  
  There are threads abut the difference between Spin1 and Spin2.
  
• Publison Posts: 12,366

  2020-08-25 23:33

  That's looking better!
• jonabel1971 Posts: 184

  2020-08-26 17:06

  That helps alot. I suspected no cognew, but people were still posting code on this thread that uses cognew() - and the conversion table didn't really cover it.
  I became confused.
  
  I downloaded & read the 4 pages of Tricks, Traps & Differences thread, and some Conversion documentation from Rayman.
  But as I mentioned - assembly language is difficult for me.
  
  Thank you for the assistance.
  
  
• jonabel1971 Posts: 184

  2020-08-26 18:09 edited 2020-08-26 18:30

  Question moved to a different thread.
  
  
• Ariba Posts: 2,693

  2020-08-26 18:43

  |< is the decode operator and is called DECOD now. But instead of DECOD, you can write:

  Mask          long      1<<0, 1<<1, 1<<2, 1<<3, 1<<4, 1<<5, 1<<6, 1<<7 
                long      1<<8, 1<<9, 1<<10, 1<<11, 1<<12, 1<<13
                ...
  
• jonabel1971 Posts: 184

  2020-08-27 16:27

  Thanks, that let me compile properly.
• jonabel1971 Posts: 184

  2020-08-27 16:50

  Since the internal clock is set at 20 Mhz, is there a way to use the external multiplier (320 Mhz) & pin I/O - to emulate a rudimentary ALU for faster calculations?