Serial line interface does not use transaction and protocol
IDs. Continue to use memcpy() for the whole frame as it is safer
and more efficient but temporarily store transaction and protocol
IDs, and write it back if the transfer was successful.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
Use size_t type where it makes sense and
check if the buffer is large enough before it is used.
Fixes: #33786Fixes: #33795
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
The size of ctx->rx_adu.data is not CONFIG_MODBUS_BUFFER_SIZE. Coverity
flagged the potential overwrite so just use sizeof().
Fixes#33789Fixes#33792Fixes#33818
Signed-off-by: David Leach <david.leach@nxp.com>
Let the core call the modbus_tx_adu() to make
the process more comprehensible.
Move tx-wait-for-rx handling outside of client code.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
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 support to control DE/nRE RS-485 transceiver signals
over GPIO pins. Useful if the UART controller does not
support RS-485 mode.
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>
