ADD display block not working on M5Stamp S3

[ajb2k3]

I cant get an SV7789 SPI display working using the following code in UIFLow2

[felmue]

Hello @ajb2k3

check out my example M5StampS3_LCD_ST7789V2_UIFlow2.0.2 in the Play Zone. It looks like the backlight PWM part is not working properly, e.g. the display stays dark. I fixed that by setting the backlight GPIO to HIGH manually.

Thanks
Felix

[ajb2k3]

Nope, just cant get it to work, I get the backlight lit up but nothing else

[felmue]

Hello @ajb2k3

for me the display only works when selecting SPI host ID SPI3.

BTW: I just figured out that PWM actually works, but the default brightness (127) is too low to see. Using st7789.setBrightness(255) sets a visible brightness.

Thanks
Felix

[ajb2k3]

I just can't get the ST7789 working on a StampS3 using the Unified driver.
I'm trying to use this display
https://www.amazon.co.uk/gp/product/B07ZP4QK3S/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

And the stamp1.27 through the mate adapter.

[felmue]

Hello @ajb2k3

did you verify this ST7789 works at all? Maybe it is broken?

I found this tutorial and it looks like this ST7789 display should work without backlight wire connected.

BTW: I run my test with an ST7789 display taken from an M5StickCPlus.

Thanks
Felix

[ajb2k3]

It was a brand new display out of the bag. There is a chance I may have killed it wiring +&- back to front but the backlight still works