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philippe44
2020-10-06 08:33:25 -07:00
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@@ -102,10 +102,11 @@ NB: For well-known configuration, this is ignored
### Display
The NVS parameter "display_config" sets the parameters for an optional display. Syntax is
```
I2C,width=<pixels>,height=<pixels>[address=<i2c_address>][,HFlip][,VFlip][driver=SSD1306|SSD1326[:1|4]|SSD1327|SH1106]
SPI,width=<pixels>,height=<pixels>,cs=<gpio>[,back=<gpio>][,speed=<speed>][,HFlip][,VFlip][driver=SSD1306|SSD1322|SSD1326[:1|4]|SSD1327|SH1106|SSD1675|ST7735|ST7789[,rotate]]
I2C,width=<pixels>,height=<pixels>[address=<i2c_address>][,reset=<gpio>][,HFlip][,VFlip][driver=SSD1306|SSD1326[:1|4]|SSD1327|SH1106]
SPI,width=<pixels>,height=<pixels>,cs=<gpio>[,back=<gpio>][,reset=<gpio>][,speed=<speed>][,HFlip][,VFlip][driver=SSD1306|SSD1322|SSD1326[:1|4]|SSD1327|SH1106|SSD1675|ST7735|ST7789[,rotate]]
```
- back: a LED backlight used by some older devices (ST7735). It is PWM controlled for brightness
- reset: some display have a reset pin that is should normally be pulled up if unused
- VFlip and HFlip are optional can be used to change display orientation
- rotate: for non-square *drivers*, move to portrait mode. Note that *width* and *height* must be inverted then
- Default speed is 8000000 (8MHz) but SPI can work up to 26MHz or even 40MHz