Based on previous conversations on the forum, it looks like GPIO10 is some sort of handshake pin between FE310 and ESP32. Could someone point me to the documentation stating that from FE310 side? How about from ESP32 side?
I tried to look for it in both spaces but failed miserably.
I see in the schematic that GPIO10 of FE310 is connected to IO2 of ESP32 (or GPIO2, or pin #24). What I want to learn is the purpose of this connection. Based on the previous forum posts, it sounds like it’s used as a handshake between the two chips, but I am failing to find the documented behavior in the official docs of these two chips.
While I see the table listing of those pins with their alternate names in ESP32-SOLO-1 datasheet, I don’t really understand what those are supposed to do. For example, I see that IO2 of ESP32 is listed as :
GPIO2, ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP, HS2_DATA0, SD_DATA0
on page 7 of the datasheet, but really not much else. Am I supposed to somehow make the connection as to what it does purely based on that list of names, or is there some other reference I am not aware of that describes the behavior in more detail?