Hardware requirements

  • Micro USB cable

  • MIMX8ULP-EVK/EVK9 board

  • J-Link Debug Probe

  • 5V power supply

  • RK055AHD091(rm68200) panel or RK055MHD091(hx8394) panel

Board settings

Connect the MIPI panel to MIMX8ULP-EVK board J18.

Prepare the Demo

  1. Connect 5V power supply and J-Link Debug Probe to the board, switch SW10 to power on the board.

  2. Connect a micro USB cable between the host PC and the J17 USB port on the target board.

  3. Open a serial terminal with the following settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  4. Build example to generate sdk20-app.bin

  5. Generate flash.bin with imx-mkimage and download it according to Getting Started doc

  6. Open two serials lines provided at J17 USB port. (e.g. /dev/ttyUSB0~3, /dev/ttyUSB2 for A Core, /dev/ttyUSB3 for M Core)

  7. Press the reset button on your board and boot to uboot and let uboot not using diplay peripherals => setenv video_off yes;saveenv then re-power on the board

  8. Let Stop in Uboot.

Steps to configure the panels

RK055MHD091 panel is used by default and the default setting for APP_DISPLAY_EXTERNAL_CONVERTOR is disabled.

When Kconfig is used

Below setting is for kconfig, you can fix below settings in prj.conf under example folder For default panel, you do not need to change anything. For RK055AHD091(rm68200) panel: CONFIG_MCUX_PRJSEG_module.board.display_support.RK055AHD091=y

When package is used

Below setting is for mcux_config.h. For RK055AHD091(rm68200) panel: Setting DEMO_PANEL to 0 to choose RK055AHD091 panel.

Running the demo

When the example runs, the screen shows what described in overview. The log below shows the output of the demo in the terminal window:

LCDIF pixel clock is: 66000000Hz

PXP Rotate example start...
LCDIF pixel clock is: 66000000Hz
MIPI DSI tx_esc_clk frequency: 19800000Hz
MIPI DSI DPHY bit clock: 444000000Hz