Difference between revisions of "Modbus notes"
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Looks like also this function to register callbacks for end-user-device-specific Modbus registers will be important: | Looks like also this function to register callbacks for end-user-device-specific Modbus registers will be important: | ||
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eMBErrorCode eMBRegisterCB ( UCHAR ucFunctionCode, | eMBErrorCode eMBRegisterCB ( UCHAR ucFunctionCode, | ||
pxMBFunctionHandler pxHandler | pxMBFunctionHandler pxHandler | ||
) | ) | ||
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| + | This function signature part of documentation found at https://www.embedded-solutions.at/en/freemodbus/api-documentation/, which gives Doxygen generated API help in an embedded pane in the browser window on which it is visited. | ||
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Revision as of 22:48, 8 November 2019
- https://libmodbus.org/ . . . Ubuntu package is 'libmodbus5' and 'libmodbus-dev'
- 2019-11-08 FRI -
When working with FreeModbus, be sure to pay attention to the versions of protocol available, and likely, we only want to enable one of these. See Modbus/include/mbconfig.h. See also Modbus/include/mb.h for instructions on how to initialize and begin to use an instance of FreeModbus stack in given program. Also mention that eMBPoll() routine may be set up as a task in an RTOS, to realize the periodic polling which is part of the stack's runtime manifestation . . .
Looks like also this function to register callbacks for end-user-device-specific Modbus registers will be important:
eMBErrorCode eMBRegisterCB ( UCHAR ucFunctionCode,
pxMBFunctionHandler pxHandler
)
This function signature part of documentation found at https://www.embedded-solutions.at/en/freemodbus/api-documentation/, which gives Doxygen generated API help in an embedded pane in the browser window on which it is visited.
