After uploading the "Hello World" programme I didn't see anythings

Q&A Forum › After uploading the "Hello World" programme I didn't see anythings

Paolo Bonelli asked 4 months ago

Hi, The first time I used CYD with your example sketch in the Getting Started chapter, 
I saw the string "Hello World" on the display. Now I don't see it anymore. 
The serial monitor display this:


17:52:59.791 -> rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
17:52:59.791 -> configsip: 0, SPIWP:0xee
17:52:59.791 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
17:52:59.791 -> mode:DIO, clock div:1
17:52:59.791 -> load:0x3fff0030,len:1448
17:52:59.791 -> load:0x40078000,len:14844
17:52:59.850 -> ho 0 tail 12 room 4
17:52:59.850 -> load:0x40080400,len:4
17:52:59.850 -> load:0x40080404,len:3356
17:52:59.850 -> entry 0x4008059c
17:53:00.021 -> LVGL Library Version: 9.1.0

Maybe it broke?
I tried with the WiFi_scan and it works.

Paolo

7 Answers

0 Vote Up Vote Down

Sara Santos Staff answered 4 months ago

Hi.
Yes, it’s weird… maybe it broke?? But, I’ve been using mine for quite some time and never had any similar issues.
Try the other example for the touchscreen in the next chapter and see if you got it working.
Regards,
Sara

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James Cantwell answered 3 months ago

I’m having this issue too. When I first plugged in the CYD I saw the default program running and was successful in playing around with the touch screen. But compiling and uploading the Hello World from the first exercise shows only a black screen. I have updated my libraries as of today (August 17, 2024) and replaced the demos and examples folders in the src folder. Do you think some of the library updates are too new and not compatible?

Thanks!

EDIT:

I got this to work for me by starting at the beginning, even reinstalling Java and continuing on to the other steps reinstalling everything. Something along the way was missing or was in need of updating apparently.

0 Vote Up Vote Down

Sara Santos Staff answered 3 months ago

Thanks for sharing your solution.

@Paolo Boneli, try to do as James recommended and see if you got it working.
Regards,
Sara

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Paolo Bonelli answered 3 months ago

Thank-you Sara and James. I’ll try the circuit in a few days, when I get home.
Regards
Paolo

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Sara Santos Staff answered 3 months ago

Ok. Great.
Then, let us know if you succeed.
Regards,
Sara

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Paolo Bonelli answered 3 months ago

Dear Sara and James,
you are right!! I again downloaded the two files: User_Setup.h and lv_conf.h . Now the “Hello World” Program works.
I think the constant requests from Arduino IDE about updating the library change something in those files.
Thankyou
Paolo

0 Vote Up Vote Down

Sara Santos Staff answered 3 months ago

Ok.
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