About Iris-DM

Iris-DM · 2025-01-28

I have been working on implementing TouchGFX in DSI Video Mode for a STM32H747-DISCO board. The LCD is a 5" 720x1280px panel, driven by a ILI9881C driver chip. After many issues with the DSI link, I have now successfully got something to display on t...

Iris-DM · 2025-01-16

I am attempting to display to an ILI9881C based panel. After successfully initialising and testing the panel using DSI only, I am working on DSI Video mode to pull data from a frame buffer via LTDC.I have the DSI configured as follows static void MX...

Iris-DM · 2025-01-14

I have a third party screen that is driven by an ILI9881C and I am having a lot of trouble getting TouchGFX up and running.I first started running DSIHost in Adapted Command mode with TE Pin and I could configure the driver's registers as necessary a...

Iris-DM · 2024-11-06

I have a custom board, which uses STM32H747IXH6 and MB1166 LCD screen from the related discovery board. I am trying to get TouchGFX up and running on this custom setup, but in my PCB design, I missed out the dedicated TE pin in the connector (I'm fol...

Iris-DM · 2024-10-31

I have a custom board with a STM32H747 micro on board, interfacing with a LCD driven by OTM8009A over the MIPI DSI interface. I have taken the driver code from the DISCO eval board which I used to design and build my board. On calling OTM8009A_Init()...

Iris-DM · 2025-01-28

@MM..1 These are my parameters from RGB888

Iris-DM · 2025-01-28

I'm only aiming for 30Hz, but I'm currently testing RGB565 and still no luck.Is the kind of output I'm getting more likely to be due to a DSI/LTDC bandwidth issue or an incorrectly configured LTDC?

Iris-DM · 2025-01-17

Interestingly, when debugging the program with the lower LTDC clock, I can see the LTDC ticking through the frame buffer by inspecting the LTDC->CPSR register, but looking at the DSI->GPSR, PWRFE and PRDFE never clear. Does this mean that the DSI hos...

Iris-DM · 2025-01-17

Ok so by your calcs, reducing the LTDC clk to 25MHz should give the following:Data throughput 1280x720x25Mx24bit = 553Mbps (Not sure if this is calculated right)Screen refresh rate 25M/(1303x751) = 25.5HzCorrect?

Iris-DM · 2025-01-17

This is the datasheet for the panel I'm working on It doesn't seem to say whether or not the panel itself supports 20Hz, but the PHY timings for the DSI link in my firmware all conform to what is laid out. I presume that if they didn't, I wouldn't be...

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LTDC Output Orientation with TouchGFX

LTDC + DSI Video Mode - No Display

ILI9881C DSI on STM32H747

TouchGFX on Custom Board with no TE pin

DSI Host Controller with OTM8009A Timeout on Write

Re: LTDC Output Orientation with TouchGFX

Re: LTDC Output Orientation with TouchGFX

Re: LTDC + DSI Video Mode - No Display

Re: LTDC + DSI Video Mode - No Display

Re: LTDC + DSI Video Mode - No Display