AerospaceNU/karman-avionics

Control timing of loops and sensor polling

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#4 opened on Mar 12, 2019

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enhancementgood first issue

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Description

Right now there is not any timing regulations on the polling of the sensors. Fix this so the sensors are called at regular and appropriate rates (check the data sheets when in doubt). This timing should be regulated by a hardware timer. The calls should also be based on frequencies and times of last call, not relative frequencies and counters (if something is 100 Hz and another 1 Hz, don't just call the latter 1 out of every 100 times the first is called, use a timer)

Contributor guide

Research direction
Examine the current sensor polling implementation to understand how sensors are called. Then, design a hardware timer based scheduling system to call sensors at regular intervals using frequencies and absolute times. Refer to sensor datasheets for appropriate sampling rates.
Tech stack
c
Domain
embedded iot
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Chardware timers
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
45