Re: ESP8266 HSPI horrible SCK
Posted:
Thu Jul 05, 2018 5:39 pmby berkutta
Just checked with 10ns, no, unfortunately not. It's still the same shitty signal. It's also not a clock, it's a sort of distortion. (The HSPI doesn't do a ~80Mhz clock)
Re: ESP8266 HSPI horrible SCK
Posted:
Thu Jul 05, 2018 6:26 pmby rudy
This is what I got.
111111.png
Yeah I know it isn't color, but it still works for me.
Re: ESP8266 HSPI horrible SCK
Posted:
Thu Jul 05, 2018 6:35 pmby rudy
berkutta wrote:Just checked with 10ns, no, unfortunately not. It's still the same shitty signal. It's also not a clock, it's a sort of distortion. (The HSPI doesn't do a ~80Mhz clock)
What is the bandwidth of your scope? Of the scope probes? I think you are expecting much better than your equipment can measure. And what you have above looks a hell of a lot better than your first post. The first post looked like poor measurement technique, or too low a horizontal sweep rate. The last one look entirely reasonable to me. Do you think your circuit will care what your scope trace looked like? (of course you will need to lay it out properly)