Prefix internal functions and structs with modbus_.
Use unit_id consistently instead of node_addr.
Fix mbm_ remainder and rename to mbc_.
Rename struct modbus_frame to modbus_adu since
ADU is closer to what the structure represents.
Let the compiler/linker do the job and
remove ifdef around mbc_validate_fc03fp_response().
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
Add function to get Modbus RTU interface index according
to interface name. This can be used to clearly identify
interfaces in the application.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
Add MODBUS RTU (over serial line) subsystem.
MODBUS RTU implementation supports booth server and
client roles. Some components of the implementation are based
on the uC/Modbus stack, which was published under Apache license,
(https://github.com/SiliconLabs/uC-Modbus
fdd1218a28e313c1212fed5ed42e5c65d3056a2c).
Resolves: #2854
Signed-off-by: Johann Fischer <j.fischer@phytec.de>
