QSPI masters of ESP-WROVER-32

sunny9hung
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Joined: Thu Mar 19, 2020 11:20 am

QSPI masters of ESP-WROVER-32

Postby sunny9hung » Fri May 22, 2020 4:16 am

I have a question related to Quad SPI of ESP-WROVER-32, which I couldn't be sure of the answer after quick search in forum, datasheet and TRM.

- Does ESP32 allow concurrent use of separate QSPI masters (with separate data bus) among SPI1/SPI2/SPI3?

More info:
From what I know in the TRM (1.) all SPI1/SPI2/SP3 individually support QSPI master, and (2.) there is an example of parallel QSPI of ESP32 with 1 flash and 1 SRAM sharing the same data buses with different CSx pins.
I suppose (2.) is the case in ESP32-WROVER-32, and I want to externally driver another QSPI slave without disturbing the QSPI master channel within module.

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