esp8266spi
I'm new to the whole development board thing and I've just started experimenting with an ESP8266-12E module.
Unfortunately I am unable to get the SPI display working. It works on an Arduino UNO, so I guess my code is alright. I think that it have something to do with the way I'm connecting the display to the ESP.
According to the following pictures there seems to be multiple SPI lines 5,6,7,16 and 14,10,9,13,11,12. Which ones are the right ones for me to use?
You are using IP addresses that are (likely) not LAN addresses. It's very unusual for your local network to run on 86.x.x.x and 102.x.x.x.
LAN addresses are typically in 10.0.0./8, 172.16.0.0/12, and 192.168.0.0/16.
Find out what your router is using (you can do this by checking your computer's IP address, on Windows use ipconfig, on Mac use ifconfig). Then pick an address in the same subnet e.g. if your computer is 192.168.1.32, try 192.168.1.200. Note that your choice may collide with another device, if so, change it. You can find all devices on your local network with nmap or similar.
Typically, something like AT+CIPSTA="192.168.1.200","192.168.1.1","255.255.255.0" is what you want.
Once the ESP is configured, see if you can ping the ESP from your computer. Then direct your browser to the ESP's IP address, and see if you get a request in the serial monitor. Don't expect the browser to display a page, you aren't serving any content to the browser; inspecting the HTTP header in the serial monitor is enough to determine a successful connection.
According to the schematics of the board, there is a diode (D1) between the VDD5V and the VDDUSB net to prevent any current flowing back, towards the laptop's USB port.
Just make sure that you connect your external power supply's GND to your board's GND, and the 3.3 V to the board's 3.3 V pin.
Best Answer
use 14,10,9,13 for SPI, the other pins represent HSPI Host Multi-device SPI the mapping according to this discussion is HSPI mapping confusion