ESP32 SPI rising time

SensorHead0815
Posts: 1
Joined: Fri Jan 27, 2023 8:23 am

ESP32 SPI rising time

Postby SensorHead0815 » Fri Jan 27, 2023 9:26 am

Hello Everyone,
I am relatively new to ESP programming - so far I have rather programmed STM32. Ans I stumbled in my first problem.
I'm using an LTC2335 together with an ESP32 DevKit V2 and I have a Problem with the "answer" of the LTC2335.
The LTC2335 has a Bit valid time on the MISO line after the rising edge of the SPI clock of only 1.5ns. does somebody know how fast the ESP32 is at this point? The bits in the ESP buffer are shifted and sometimes one is missing and I think this might be the reason.
The LTC2335 also has the possibility of using a DDR Clock with f_SLCK/2 and Valid bits on high an low state. Is there a possibility of using DDR with VSPI in general and in the Arduino IDE?
Best regards, Jens

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