pschatzmann / logic-analyzer

Arduino Logic Analyzer API supporting the SUMP protocol (for sigrok, pulseview)
GNU General Public License v3.0
107 stars 15 forks source link

maximum usefull sampling frequency for esp32 is 20Khz #8

Open RomanLut opened 2 years ago

RomanLut commented 2 years ago

Maximum usefull sampling frequency for esp32 is 20kHz. With frequencies above 20kHz, samples are captured with incorrect frequency, pulses became longer or shorter. At 1Mhz, 500us pulse is captured as 1300us.