ESP8266 Community Forum

Change the state of the port is a very, very long.



Time change is more than 2ms, why so long?
I need to generate a GPIO course of 50us, and it is not feasible.

01000001001110101000001000110111110001001
Every bit is to have 50us. How to do it?
ESP is set, max speed 160MHz

ESP Basic is an interpreter. Bit banging is not going to be that easy.

There are special functions for SPI and i2c if you need a higher speed interface.

I2C is a good idea, thanks

In your case you should use SPI.
If I converted correctly your binary code 01000001001110101000001000110111110001001 corresponds to '8275046F89' in hex. In order to have a bit @ 50us the frequency must be 20 KHz.
You can so use the following functions :
spi.setup(20000)
spi.hex("8275046F89", 5)

The output pin is the MOSI: GPIO13