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Can I not use the UART port in ESP-WROOM-02D?

Posted: Wed Apr 04, 2018 11:29 am
by nch1766
I found that my serial port was not enough to use when designing , Can use SPI for instend ? I noticed that the ESP-WROOM-02D had both UART and HSPI port , but there is little information about HSPI for data communication in the technical manual and Community Forum , I'm very upset with the following questions , Any insights into this would be greatly appreciated. :D
1: Do ESP-WROOM-02D support for AT commands using HSPI interface ?
2: could I use ESP-WROOM-02D as a SPI-WIFI passthrough device without UART port ?