I am currently working with the STM32U5G9J-DK1 development kit interfacing with a Tianma-based display. I have successfully managed to update the display using adaptive command mode with DSI long and short write commands. However, I am encountering issues related to the refresh rate and switching modes:
- Issue with Refresh Rate:
- While updating the display using long write DSI commands, I observed that the refresh rate is significantly slow. To optimize this, I attempted to change to High-Performance (HP) mode after the initialization commands.
- Problem Switching to High-Performance Mode:
- After the initialization commands and sending a pixel memory write command, I disabled the DSI long write command from low power to check if the display would operate in HP mode.
- However, when I disable the low power (LP) mode for long write commands, the display shows nothing. The display only works if I enable LP mode for the long write.
- Configuration Details:
- I am using FIFO while writing pixels in long write mode.
- I have confirmed that the initialization sequence and command settings are correct, as they work in LP mode.
- The issue arises when attempting to transition from LP mode to HP mode.
Request for Assistance:
Could you provide guidance on:
- Why the display does not work in HP mode after disabling LP mode for long write commands?
- Are any additional settings or configurations required to enable proper HP mode operation?
Your assistance in resolving this issue would be greatly appreciated.
Thank you.
Best Regards,
JAYA PRAKASH P
EMBEDDED MODULE LEAD
EMAIL: jayaprakash_p@aktisengineering .com
