03. Adding Support of multiple Sensors

The SW should be able to receive data from multiple sensors, e.g. a Weather Sensor and a Soil Moisture Sensor.

Option for skipping unwanted sensors (e.g. neighbours') - currently messages are received and decoded regardless of type or ID of sensor!

3 Different solutions have been considered:

Solution 1

• decode radio messages in order as received
• save decoded data into temporary buffer
• copy data into final structure

Pros:

• easy to implement
• clean code structure

Cons:

• memory wasted for temporary buffer
• time for copying data

Solution 2

• handle radio messages in predefined order
• save decoded data into final structure

Pros:

• easy to implement
• clean code structure
• efficient memory utilization

Cons:

• inefficient usage of CPU time waiting for desired message

Solution 3

• decode radio messages in order as received
• save decoded data into final buffer in reception order; check for data already received (either complete or incomplete)
• map data buffer (order of reception) to predefined order or search for desired sensor ID/type for presentation

Pros:

• efficient memory utilization
• efficient usage of CPU time

Cons:

• somewhat difficult to implement
• potentially fuzzy code structure

Implemented: Solution #3

Solution #3 has been implemented and the code does not look too bad, IMHO!