RS485 support with Spark

I have RS485 master controller. Is possible to create modbus slave with spark?


Hi Zebec,

You’d need a balanced line controller for the bus. see maxim for some chips and background:

I see no reason why the uart pins on the spark would not be able to handle such a signal. Then it is just writing the slave software, which is responding to an address , function and crc. I do not think there is such a library yet, but porting SimpleModbus for the arduino should be pretty straightforward imho.



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