@Sandro
the mtp_logger was designed as example for the original MTP port to Teensy https://github.com/WMXZ-EU/MTP_t4. Meanwhile @KurtE developed it to MTP_Teensy (adapting MTP_t4 also to his own programming style). So...
Please make a pull request at Bill Greimans SdFst Github https://github.com/greiman/SdFat or open an issue, as this is the original (master) repository.
Maybe your python program does not release the port properly.
my python program to reed teensy data (part of larger project) looks like
def microPAM_readLines(value):
s=serial.tools.list_ports.comports(True)
...
@BriComp, Com'on. The OP was clear, He wanted to do TOA, which defines the sampling requirement.
@aherjim: what you need to do is quite easy: You need all sensors sampled with the same sampling line. this is best...
I would add that you can program RP2040 from Arduino as you do with Teensy. The dual core M0 is not as difficult to program as it seems: you have 2 setup() and 2 loop(). I did an audio recorder that runs on Teensy (4.1)...