don't wait for confirmation response if the write is a broadcast message

[bobemoe]

Fixes #117

I added a condition ctx->slave!=0 so that a response is not expected if its a broadcast message. This allows the endTransmission to return asap without blocking waiting for a response that will never come and eventually timing out.

I added this to modbus_write_bits and modbus_write_registers which are the only 2 functions called by endTransmission

This has fixed issue #117 for me.

Not sure if this may need to be added in any other places?

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[github-actions[bot]]

Memory usage change @ df2ffbeb7c09208cd34db1210a2f4e7e0f509f48

Board	flash	%	RAM for global variables	%
arduino:mbed_nano:nano33ble	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:mbed_opta:opta	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:mbed_portenta:envie_m7	N/A	N/A	N/A	N/A
arduino:megaavr:uno2018:mode=off	:small_red_triangle: 0 - +24	0.0 - +0.05	0 - 0	0.0 - 0.0
arduino:samd:mkrwifi1010	:small_red_triangle: 0 - +16	0.0 - +0.01	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/RTU/ModbusRTUClientKitchenSink flash	%	examples/RTU/ModbusRTUClientKitchenSink RAM for global variables	%	examples/RTU/ModbusRTUClientParameters flash	%	examples/RTU/ModbusRTUClientParameters RAM for global variables	%	examples/RTU/ModbusRTUClientToggle flash	%	examples/RTU/ModbusRTUClientToggle RAM for global variables	%	examples/RTU/ModbusRTUServerKitchenSink flash	%	examples/RTU/ModbusRTUServerKitchenSink RAM for global variables	%	examples/RTU/ModbusRTUServerLED flash	%	examples/RTU/ModbusRTUServerLED RAM for global variables	%	examples/RTU/ModbusRTUTemperatureSensor flash	%	examples/RTU/ModbusRTUTemperatureSensor RAM for global variables	%	examples/TCP/EthernetModbusClientToggle flash	%	examples/TCP/EthernetModbusClientToggle RAM for global variables	%	examples/TCP/EthernetModbusServerLED flash	%	examples/TCP/EthernetModbusServerLED RAM for global variables	%	examples/TCP/WiFiModbusClientToggle flash	%	examples/TCP/WiFiModbusClientToggle RAM for global variables	%	examples/TCP/WiFiModbusServerLED flash	%	examples/TCP/WiFiModbusServerLED RAM for global variables	%
arduino:mbed_nano:nano33ble	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:mbed_opta:opta	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:mbed_portenta:envie_m7	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
arduino:megaavr:uno2018:mode=off	24	0.05	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrwifi1010	16	0.01	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0

Click for full report CSV

Board,examples/RTU/ModbusRTUClientKitchenSink<br>flash,%,examples/RTU/ModbusRTUClientKitchenSink<br>RAM for global variables,%,examples/RTU/ModbusRTUClientParameters<br>flash,%,examples/RTU/ModbusRTUClientParameters<br>RAM for global variables,%,examples/RTU/ModbusRTUClientToggle<br>flash,%,examples/RTU/ModbusRTUClientToggle<br>RAM for global variables,%,examples/RTU/ModbusRTUServerKitchenSink<br>flash,%,examples/RTU/ModbusRTUServerKitchenSink<br>RAM for global variables,%,examples/RTU/ModbusRTUServerLED<br>flash,%,examples/RTU/ModbusRTUServerLED<br>RAM for global variables,%,examples/RTU/ModbusRTUTemperatureSensor<br>flash,%,examples/RTU/ModbusRTUTemperatureSensor<br>RAM for global variables,%,examples/TCP/EthernetModbusClientToggle<br>flash,%,examples/TCP/EthernetModbusClientToggle<br>RAM for global variables,%,examples/TCP/EthernetModbusServerLED<br>flash,%,examples/TCP/EthernetModbusServerLED<br>RAM for global variables,%,examples/TCP/WiFiModbusClientToggle<br>flash,%,examples/TCP/WiFiModbusClientToggle<br>RAM for global variables,%,examples/TCP/WiFiModbusServerLED<br>flash,%,examples/TCP/WiFiModbusServerLED<br>RAM for global variables,%
arduino:mbed_nano:nano33ble,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:mbed_opta:opta,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:mbed_portenta:envie_m7,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,,,,,,,,
arduino:megaavr:uno2018:mode=off,24,0.05,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:samd:mkrwifi1010,16,0.01,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0

[bobemoe]

I've just found this issue upstream and PR https://github.com/stephane/libmodbus/pull/467

[PanzerFowst]

If that is the case, then shouldn't this PR be closed?

[bobemoe]

Yeah I guess, though I'm still having to use this as a patch as its not actually been merged in upstream.

[PanzerFowst]

Gotcha, makes sense. I suppose that also assumes that the libmodbus would also need to be updated in this two too.

On Wed, Jan 3, 2024 at 04:46 bobemoe @.***> wrote:

Yeah I guess, though I'm still having to use this as a patch as its not actually been merged in upstream.

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