Seeking Paid Software Support for ILI9881C 2-Lane MIPI DSI

[jimolson52]

If this posting violates STM's rules for the forum, please delete it.

We are a Midwest US company designing an IoT product containing STM32MP157 and a 5 inch, 1-megapixel LCD touch LCD panel.  The LCD panel's video controller is an Ilitek device known as ILI9881C and is mentioned frequently in this forum by others.

Our end product (physically about the size of your hand) is functioning mostly at the PCB level, accepting code, and generally behaving according to its design. However, it is not yet working with Winstar's LCD panel.

This posting is a plea for paid software support help writing two-lane MIPI drivers to support the LCD.  The end goal would be to make mostly alphanumeric displays with only minor graphics and ease our software team into completing their design.  We do not seek smart phone-like LCD behavior, mostly static displays with capacitive touch.

We've confirmed with Winstar that our version of their LCD panel is compatible with 2-lane MIPI.

Please PM me if interested.  On-site support is not necessary and we might travel to visit you if electronic interaction is insufficient.

[Tesla DeLorean]

No specific experience with the STM32MP series, but 

https://community.st.com/t5/stm32-mpus-embedded-software-and/stm32mp157-lcd-panel-ili9881c-fifo-underrun/td-p/764462

>>The end goal would be to make mostly alphanumeric displays..

Should be a matter of writing to a frame buffer, and allowing the "DMA" LTDC funnel to DSIHOST, where clocking data over the DSI is done at a rate meeting/exceeding the delivery rate.

I'd look for an initial configuration closely matching the geometry/rate of the target screen, and then any specific configuration of the ILI9881 via DSI or I2C, or external strapping.

Midwest USA, perhaps some FAE's out of ST's Chicago/Schaumburg office?

Open an Online support request https://ols.st.com/s/

[Tesla DeLorean]

@MWoło.2 

[jimolson52]

Tesla, thanks for the great suggestions!  Since I began using STMicro's hardware 4 years ago you've been quite helpful with your postings.  I remember the time you bailed me out when I mounted an STM32F4xx part incorrectly thinking that the ejection dimple was the pin #1 marker.  Spent 2 days debugging that problem.

Regarding this thread, the LCD display manufacturer connected us with another customer having experience writing ILI9881 drivers.  The software guys are still working on it.  I'll post an image of the display when they succeed.