Internal data handling needs much improvement, as signed/unsigned
integers and other data types are not yet handled.
Javascript seems like a really poor choice for parsing the html
table, currently it takes ~10 seconds to hande the data. API
response time is good, so probably switching to Go templates for
the dynamic tables is the best course of action. This will move
the load from clientside to serverside, hopefully the planned
RPi Zero W can handle the computations
- goburrow/modbus' ReadHoldingRegisters can only fetch 125 registers at a
time, so updateRegisters does several readings
- modbus.ReadHoldingRegisters returns a []byte, where each even byte represents
the MSB of a int16/uint16 and every odd byte is the LSB
- updateRegisters loops through each response slice forming the 16-bit
integers
Still need to figure out a way to properly handle the signed/unsigned
values, and also the enumerations and bitfields. Perhaps changing the
'signed' boolean to a byte and making that a bitfield representing the
value type would be a good way to go. The value can then be properly
formed when fetching it from the in-memory pingvinKL struct, while being
stored as an int(64) internally.
Jarno Rankinen