initial implementation of analog config protocol #143
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| case ANALOG_CONFIG: | ||
| if (argc > 1) { | ||
| switch (argv[0]) { | ||
| case 0: // set analog reference voltage |
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SAM-based variants would need to skip this entire case.
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This is an evolution of #40 so I opened a new pull for it. I've added a pull request for the protocol as well: https://github.com/firmata/protocol/pull/8/files.
However adding this functionality is not so straight forward. There are 2 major issues:
analogReadResolutionandanalogWriteResolution.analogReferencemethod, but it is set with a typedef value rather than a constant. Furthermore, the DEFAULT and EXTERNAL are defined for SAM variants, but they cannot be passed toanalogReferencesinceanalogReferenceexpects a parameter of typeeAnalogReferencewhich is a type created specifically for SAM variants.There appears to be no clean implementation possible here. I'd have to pick an existing define that is unique to each architecture and use that to determine whether a board is of SAM or AVR architecture, or I'd have to add some defines to Boards.h to sort it out.