Codesys-Library-Atom-Modbus/docs/BUILD-AND-USAGE.md

Build and upgrade to atMb 0.8

Build from the repository root and clean between architectures:

make -C component-source/component SDKDIR="$(realpath ExtensionSDK)" clean
make -C component-source/component SDKDIR="$(realpath ExtensionSDK)" all

For the UR2000 ARMv7 hard-float target:

make -C component-source/component SDKDIR="$(realpath ExtensionSDK)" clean
make -C component-source/component \
  SDKDIR="$(realpath ExtensionSDK)" \
  CC="arm-linux-gnueabihf-gcc -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=hard" all

Use the matching ARM64 compiler for Raspberry Pi/UC20 and check ELF architecture and GLIBC requirements before deployment. The C component is version 0.5.0.0.

CODESYS and online change

1. Create a fresh library project and import library/atMb-OnlineChange.export.
2. Verify Project Information version 0.8.0.0, namespace atMb, and the existing Standard/SysTime references.
3. Add a C Implemented Library object with the rebuilt 0.5.0.0 component.
4. Compile the library and update the application reference.
5. Test online change while idle, during an active read, during disconnect, and with an active write. Confirm clients reopen and data becomes valid.

The external ABI signature/API version is unchanged. There is no worker FB, thread-affinity setting, or native worker thread in this release.