| 1 | New Analog API Proposal
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| 2 |
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| 3 | ***averaging stuff***
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| 4 | new analog init function
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| 5 | - don't worry about speeding up analog loop for now (do that separately)
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| 6 | - will take the number of samples for averaging as an argument
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| 7 | - make old init function a wrapper for this one that uses a default value
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| 8 | - will not handle multiple buffer lengths
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| 9 | - initialize averaging buffers
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| 10 | - bitfield (or some other way) to determine which ADC ports to average
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| 11 |
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| 12 | new "get" functions
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| 13 | - take an argument to specify average or immediate value
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| 14 | - if averaging, perform division on running sum
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| 15 | - deprecate the old get
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| 16 |
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| 17 | #define some new error codes
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| 18 | - out of range
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| 19 | - trying to average, but not enough history values
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| 20 |
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| 21 | in the interrupt
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| 22 | - fill the ring buffer with the newest reading and add the current readings for the average
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| 23 | - don't do the divide for the averaging - do this in get
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| 24 |
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| 25 | update rangefinder code accordingly so that people can get averaged rangefinders
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| 26 |
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| 27 | ***new analog interrupt***
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| 28 | init function
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| 29 | -takes a bitfield of different analog fields to read
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| 30 | -analog loop only reads those analog fields
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| 31 |
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| 32 | new "get" function
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| 33 | -keep it fresh - return an error if somebody tries to read an old value twice
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| 34 |
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| 35 | function to update the bitfield dynamically
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| 36 |
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| 37 | eliminate bom_refresh - put bom refresh in the analog loop when the bom bit is asserted in the bitfield
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| 38 |
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| 39 | #define some new error codes
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| 40 | - analog port not initialized yet
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| 41 | - not reading from that analog - bit not asserted in bitfield
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| 42 | - reading is not fresh - this particular reading has already been read
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| 43 |
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| 44 | no need to start and stop the loop anymore - deprecate the old functions
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| 45 | - to do this, user should set all bits in bitfield to 0
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| 46 |
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| 47 | issues to consider:
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| 48 | - concurrency issue if user disables a port that is currently being read (is this serious?) |
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