ESP8266直驱TFT屏幕显示JPEG图片

qingkong

这个没搞过spi屏幕 但是看micropython是有个硬件spi接口的 80mhz啊

而arduino croe和micropython是同源的啊 ardunio应该也有类似的接口吧

micropyhton下的引用是hspi...

Hardware SPI bus
The hardware SPI is faster (up to 80Mhz), but only works on following pins: MISO is GPIO12, MOSI is GPIO13, and SCK is GPIO14. It has the same methods as the bitbanging SPI class above, except for the pin parameters for the constructor and init (as those are fixed):

qingkong

arduino也是有这个东西的


SPI
SPI library supports the entire Arduino SPI API including transactions, including setting phase (CPHA). Setting the Clock polarity (CPOL) is not supported, yet (SPI_MODE2 and SPI_MODE3 not working).

The usual SPI pins are:

MOSI = GPIO13
MISO = GPIO12
SCLK = GPIO14
There’s an extended mode where you can swap the normal pins to the SPI0 hardware pins. This is enabled by calling SPI.pins(6, 7, 8, 0) before the call to SPI.begin(). The pins would change to:

MOSI = SD1
MISO = SD0
SCLK = CLK
HWCS = GPIO0
This mode shares the SPI pins with the controller that reads the program code from flash and is controlled by a hardware arbiter (the flash has always higher priority). For this mode the CS will be controlled by hardware as you can’t handle the CS line with a GPIO, you never actually know when the arbiter is going to grant you access to the bus so you must let it handle CS automatically.