nanoMODBUS

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How are non-contiguous registers managed if read with FC03?

3

I have a map of non-contiguous registers, I took a superficial look at the code, but I did not found if and how it's managed if the client requests a...

effemmeffe

RTU Connection Setup

1

I am looking to use your library for a project going to use both RTU and TCP. I've noted there is no way to set up the RTU port number,...

Daltiair

Flush TCP socket on exception

1

Not all bytes may have been read from the TCP socket read buffer when the request processing is aborted by an exception. - remember the frame length from the message...

stefanb2

TCP read out-of-sync after exception

3

I'm trying to integrate the code into my tree as Modbus TCP server. I started with the minimal configuration, ie. I flagged out all except one function implementation. While trying...

stefanb2

Comment clarity

3

I see lines: `nmbs->platform.read(nmbs->msg.buf, sizeof(nmbs->msg.buf), 0, nmbs->platform.arg);` Should the user's read and write callbacks empty the `nmbs->msg.buf` and the hardware's UART buffers when the timeout parameter is zero? The comment...

joegittingherdone

Following https://github.com/debevv/nanoMODBUS/pull/55 I realized that there was no way to check if the new `crc_calc()` function pointer was defined by the user or not, since there is no guarantee that...

debevv