DigiPots support #108
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DigiPots support #108
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johnboiles
commented
Aug 15, 2019
| // Define the Grbl system include files. NOTE: Do not alter organization. | ||
| #include "config.h" | ||
| #include "nuts_bolts.h" | ||
| #include "cpu_map.h" |
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I needed to move this up so that cpu_map.h got processed before settings.h so that settings.h could know if HAS_DIGIPOTS was defined
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Hi @chamnit, do you think this feature should be merged into If yes, are you OK with the state of this PR, or are there things that need to be reworked first ? Can I help ? |
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This pull request add supports for digital potentiometers (DigiPots) that are included on some control boards. I've tested this code on an Ultimachine RAMBo 1.4 board which has an AD5206 DigiPot chip controlled over SPI. This allows for software control of stepper current. By commenting out the
#define HAS_DIGIPOTS, the change should be fully removed from compilation.As a part of this code, a new per-axis setting is included to change the DigiPot value was added as
$14nwherenis one of the axes indexed from 0-2 for x, y, and z. @chamnit suggested in gnea/grbl#696 that I should open a PR with DigiPots support directly onto gnea/grbl-Mega instead of gnea/grbl. We'll probably want to consider a way that we can reserve the$14nsetting so that it doesn't become a different setting on gnea/grbl than it is on gnea/grbl-Mega.