General • Re: Transfer data over wifi for pico for a high sampling rate

But i am getting packet missing. Do i need to change any other values for 160k sample rate?

for 160K in picoADC_USB.c. you need to the clock divider by 48Mhz/160000 = 300 -1
line 271
adc_set_clkdiv(299); // 160K samples/sec

Then on usb2bin.c the time period between of each packet is 1 sec/160kSamples * 600Samples/packet = 3750us

And yes the PI5 is slower than the Pi4. I got lost frame on the PI5. (looks like that the PI5 can't handle too many packet transfer).

It helps if you boot the Pi5 on console only (No desktop GUI).
Also on My Pi5 I was saving usb2bin to a ramdisk. At 200Ksamples/sec is around 1.5Gbytes per hour.


Also for the voltage drop out , use a resistor divider instead to check the Pico

two resistors of 1K.

Statistics: Posted by danjperron — Tue Feb 27, 2024 11:36 pm

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