Lv.obj() let my board restar

Micropython
1

hi,
I use lv_micropython make build a board STM32H743 with 32Mflash and 32M ram,and i want try use LVGL write ‘’ hello word ‘’ in my ssd1306 screen .its 128 height and 64 width,and with I2C to show.but when i init my screen. i find when i use scr = lv.obj() this cmd ,it will make my bord Disconnect the link with repl just like the board is restar.this is the picture.
dose someone meet same situation and sove it?please help.

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2

In my case, without initialize display driver before create lv.obj.
it’ll reboot.

I remeber my display driver (ili9xxx), it has lv.init() when it is not initialized.
I am not sure SSD1306,

try lv.init → init display driver → create obj

this is my seq to load screen

lv.init()
# initialize the display driver
disp = ili9xxx(miso=xx,mosi=xx,...etc)

obj = lv.obj()
label = lv.label(obj)
label.set_text("Test")
lv.scr_load(obj)
1 Like
3

thanks,i will try add init in my code.

4

i have try to add lv_init in my code,but it my be not work.the board is still restar.and ,i use I2C to init my ssd1306, but it still make my board restar.