This is the documentation for the latest (main) development branch of mcuxpresso sdk. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

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 Note: RK055MHD091 panel is used by default, to use the RK055AHD091 panel, modifications as below:

    • change “#define DEMO_PANEL DEMO_PANEL_RK055MHD091” to “#define DEMO_PANEL MIPI_PANEL_RK055AHD091” in display_support.h

  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.

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