ESP8266 Community Forum

- Sun Nov 29, 2015 2:41 am #35228 Hi!
I need also to find a way to connect this Pi zero...so I have a linux on this side...alone in the world

Maybe program a tun/tap program on PI to send receive data (uart/spi) by ESP8266 connected as relay to a socket server on an other linux router AP (openwrt), with also support tun tap standard? I see only this way for the moment...not very flexible but ESP can be configured by SPI, UART to configure Server:port

I looked for by forwarding interface on ESP AP<-->STA - No way for the moment
With ethernet converter - No way for the moment with ESP, but OK for PI.

- Sun Nov 29, 2015 2:56 am #35229 My understanding of where the ESP8266 came from is that it was originally designed to run in exactly this manner - i.e. as a slave driven over SPI from a host computer. I think it was then repurposed to run in a standalone mode.

It has been used in some tablets like this I believe but I'm not sure which ones.

If you want the speed that you would expect from a WiFi adaptor then this is the way to go I think, rather than interpreting commands in a program.

Does anyone else have any more info on this mode?

- Sun Nov 29, 2015 4:05 am #35230 dont't now differences between ESP8266 and previous ESP8089
here are some sources for linux sunxi ESP8089 driver (SPI slave). Starting point ?

https://github.com/linux-rockchip/linux-rockchip/tree/mirror/stable-3.0/drivers/net/wireless/esp8089
https://github.com/george-hopkins/esp8089-spi

ESP8266 in SPI Slave mode, some infos from Espressif here :

http://bbs.espressif.com/viewtopic.php?f=51&t=819
mainly those two documents ? : (ESP8266_SPI-WiFi_Passtrough 1 & 2)
http://bbs.espressif.com/download/file.php?id=660
http://bbs.espressif.com/download/file.php?id=660

- Sun Nov 29, 2015 5:06 pm #35298 Why don't you just use a Wifi dongle? Or perhaps I missed the question?