Ensure that begin() is not called multiple times.

[iabdalkader]

No description provided.

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[github-actions]

Memory usage change @ ffaa7a1

Board	flash	%	RAM for global variables	%
arduino:mbed_giga:giga	🔺 0 - +64	0.0 - 0.0	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/Advanced/ADC_Multi flash	%	examples/Advanced/ADC_Multi RAM for global variables	%	examples/Advanced/ADC_Multi_Channel flash	%	examples/Advanced/ADC_Multi_Channel RAM for global variables	%	examples/Advanced/ADC_Multi_To_DAC flash	%	examples/Advanced/ADC_Multi_To_DAC RAM for global variables	%	examples/Advanced/ADC_Serial_Plotter flash	%	examples/Advanced/ADC_Serial_Plotter RAM for global variables	%	examples/Advanced/ADC_To_DAC flash	%	examples/Advanced/ADC_To_DAC RAM for global variables	%	examples/Advanced/DAC_One_Channel flash	%	examples/Advanced/DAC_One_Channel RAM for global variables	%	examples/Advanced/DAC_Sine_wave flash	%	examples/Advanced/DAC_Sine_wave RAM for global variables	%	examples/Advanced/DAC_Two_Channels flash	%	examples/Advanced/DAC_Two_Channels RAM for global variables	%	examples/Beginner/Audio_Playback flash	%	examples/Beginner/Audio_Playback RAM for global variables	%	examples/Beginner/Waveform_Generator flash	%	examples/Beginner/Waveform_Generator RAM for global variables	%
arduino:mbed_giga:giga	0	0.0	0	0.0	64	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	64	0.0	0	0.0	64	0.0	0	0.0	64	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	64	0.0	0	0.0

Click for full report CSV

Board,examples/Advanced/ADC_Multi<br>flash,%,examples/Advanced/ADC_Multi<br>RAM for global variables,%,examples/Advanced/ADC_Multi_Channel<br>flash,%,examples/Advanced/ADC_Multi_Channel<br>RAM for global variables,%,examples/Advanced/ADC_Multi_To_DAC<br>flash,%,examples/Advanced/ADC_Multi_To_DAC<br>RAM for global variables,%,examples/Advanced/ADC_Serial_Plotter<br>flash,%,examples/Advanced/ADC_Serial_Plotter<br>RAM for global variables,%,examples/Advanced/ADC_To_DAC<br>flash,%,examples/Advanced/ADC_To_DAC<br>RAM for global variables,%,examples/Advanced/DAC_One_Channel<br>flash,%,examples/Advanced/DAC_One_Channel<br>RAM for global variables,%,examples/Advanced/DAC_Sine_wave<br>flash,%,examples/Advanced/DAC_Sine_wave<br>RAM for global variables,%,examples/Advanced/DAC_Two_Channels<br>flash,%,examples/Advanced/DAC_Two_Channels<br>RAM for global variables,%,examples/Beginner/Audio_Playback<br>flash,%,examples/Beginner/Audio_Playback<br>RAM for global variables,%,examples/Beginner/Waveform_Generator<br>flash,%,examples/Beginner/Waveform_Generator<br>RAM for global variables,%
arduino:mbed_giga:giga,0,0.0,0,0.0,64,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,64,0.0,0,0.0,64,0.0,0,0.0,64,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,64,0.0,0,0.0

[aentinger]

Please encapsulate descr && descr->pool within a function to check initialisation status and then this PR can be merged 👍 .