LPC54628 GT911 Touch controller not ACK

samv — Thu, 19 Dec 2024 19:04:43 GMT

I am trying to run the lcxpresso54628_lvgl_guider demo on the OM13098UL dev. board.

It compiles but crashes when run at the "status = GT911_Init(&s_touchHandle, &s_touchConfig);" line.

Here is the message:

Touch IC initialization failed

ASSERT ERROR " false ": file "lvgl_support.c" Line "444" function name "DEMO_InitTouch"

The I2C lines do send out the touch controller address of 0x5D but there is no ACK so the check fails and program breaks. Other demos cause the same issue.

The original demo that came with the dev. board ran fine and I would like to reload it and look at the I2C lines to see any difference. Where can I get that hex file to upload to the board?

Thanks

Sam

Re: LPC54628 GT911 Touch controller not ACK

samv — Thu, 19 Dec 2024 22:13:26 GMT

It turns out that the display on my board does not use the GT911 touch controller but actually the FT5336 chip. Just had to change the DEMO_PANEL define to DEMO_PANEL_RK043FN02H and all works fine now.

topic Re: LPC54628 GT911 Touch controller not ACK in LPC Microcontrollers

LPC54628 GT911 Touch controller not ACK

Re: LPC54628 GT911 Touch controller not ACK