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Could not get the example “1.8 Testing the Display’ to work”

Q&A Forum › Could not get the example “1.8 Testing the Display’ to work”
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Anthony asked 4 months ago

Compiled and downloaded the code to the cheap yellow display.  The display did not display ‘Hello, world!’  Here are the messages from the serial monitor.  It seems to get stuck at the lvgl library.

15:16:26.589 -> rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)

15:16:26.589 -> configsip: 0, SPIWP:0xee

15:16:26.589 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00

15:16:26.589 -> mode:DIO, clock div:1

15:16:26.592 -> load:0x3fff0030,len:1448

15:16:26.592 -> load:0x40078000,len:14844

15:16:26.592 -> ho 0 tail 12 room 4

15:16:26.592 -> load:0x40080400,len:4

15:16:26.592 -> load:0x40080404,len:3356

15:16:26.592 -> entry 0x4008059c

15:16:26.803 -> LVGL Library Version: 9.1.0

I checked the Aliexpress site where I bought the display, it seems that this board requires the 
ST7789 driver, not the ILI9341.  It is an ESP32-2432S028Rv3.  I changed the lvgl_conf.h to use the ST7789 instead of ILI9341 and recompile.  The result is the same.  It gets stuck at lvgl.
rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)

configsip: 0, SPIWP:0xee

clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00

mode:DIO, clock div:1

load:0x3fff0030,len:1448

load:0x40078000,len:14844

ho 0 tail 12 room 4

load:0x40080400,len:4

load:0x40080404,len:3356

entry 0x4008059c

LVGL Library Version: 9.1.0

 

 

5 Answers
0 Vote Up Vote Down
Alex Chalmers answered 4 months ago

I have that same part number, works fine for me.
I suggest you doublecheck the copying of the  user_setup.h and lv_config files … the location is critical.
 
HelloWorld! shows on screen with the below on monitor output :

ets Jul 29 2019 12:21:46

 
rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)

configsip: 0, SPIWP:0xee

clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00

mode:DIO, clock div:1

load:0x3fff0030,len:1448

load:0x40078000,len:14844

ho 0 tail 12 room 4

load:0x40080400,len:4

load:0x40080404,len:3356

entry 0x4008059c

LVGL Library Version: 9.1.0

 

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Alex Chalmers answered 4 months ago

.

0 Vote Up Vote Down
Sara Santos Staff answered 4 months ago

Hi Anthony?
Were you able to fix your issue?
Regards,
Sara

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Anthony answered 4 months ago

I reinstalled all the libraries and recompiled the examples and both worked. 

0 Vote Up Vote Down
Sara Santos Staff answered 4 months ago

Great.
I’ll mark this issue as resolved. If you need further help, you just need to open a new question in our forum.
Regards,
Sara