Reinitialise Serial communication after overclocking pico

[anon64141892]

In my program written with Arduino SDK , I increased the CPU clock of my pico:

#include "hardware/vreg.h"

//Set vreg to maximum: is necessary before overclocking the pico
vreg_set_voltage (VREG_VOLTAGE_1_30);

// set CPU clock to 300MHz...
set_sys_clock_pll(300 *12000000, 6, 2);

//do something really fast (pico does it!)
...

// Now slow down CPU clock to regular speed = 125MHz - Pico deos it correctly
set_sys_clock_pll(125 *12000000, 6, 2);

//initialise Serial port: >>>>This does not work! - There is no connection to the serial
//monitor possible even though the CPU clock speed was set "back to normal"
Serial.begin( (9600);
...(aim: shuffle the results to the serial port)

It seems that the serial port is somehow knocked out by preivous overcklocking (is true for clock speed >295 MHz)
--> Question: Is there any way to "re-initialise" the serial port?

[gilshultz]

I do not know your part but I have seen internal latch up when overclocking a processor. Normally powering down and back up generally fixes it, sometimes a rest will do that.

[pert]

I moved your topic to an appropriate forum category @anon64141892

In the future, when creating a topic please take some time to pick the forum category that best suits the subject of your topic. There is an "About the _____ category" topic at the top of each category that explains its purpose.

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Thanks in advance for your cooperation.