Indexing error in x axis (SM5166PC Chipset)

[Jiwno]

Hi, I have an issue while using the led matrix with the library.

I'm using a 96x48 pixel matrix with SM5166PC chipset and have index error in x axis.

As you can see in the image (0, 0) of the matrix doesn't start from left top corner.

I found that the index of x axis starts with 32-63 and then goes to 0-63.

32 to 63 index are repeated.

Is there any ways to set indexes of the matrix again or any other ways to solve this problem?

[DarrylStrong]

Do you have a photo of the rear of the pcb?

[Jiwno]

Do you have a photo of the rear of the pcb?

Here!!

But when I tested the example code '1_SimpleTestShapes', index seemed fine(after I defined pin e to 32 and I also defined pin e for the plasma example code as well)

Like this.

[mrcodetastic]

So SM5166 compatibility works then? Looks good to me.

[Jiwno]

Yeah, index aligned well on shape test example code but not with the plasma code.

I don't know why but I think it works fine though

[mrcodetastic]

It could be a bug with the pattern plasma code to be honest.

[BaiTian6641]

I have the same issue with 96 x 48 panel and none of example code cannot display properly. However, there is a modify version of ESP32-HUB75-MatrixPanel-DMA library, that library seem work fine, but it only support ESP32.
https://www.waveshare.com/wiki/RGB-Matrix-P2.5-96x48-F#Demo_2

[mrcodetastic]

https://www.waveshare.com/wiki/RGB-Matrix-P2.5-96x48-F#Demo_2

Good find. It would have been nice if they could have contributed to this library than make a custom copy.

[BaiTian6641]

So, this is what panel display when I using none modified library. (Example is the BouncingSquares)

[BaiTian6641]

For simple test shape example.

[BaiTian6641]

I make modify on waveshare's library, using current esp32_i2s_parallel_dma.hpp and esp32_i2s_parallel_dma.cpp. And result is this:

This is SimpleTestShapes example.

This is BouncingSquares example.

[BaiTian6641]

After set the invert_pclk to true in the gdma_lcd_parallel16.hpp, it works on ESP32S3! @mrfaptastic @Jiwno




So, here are some examples. The AuroraDemo example and BouncingSquares example.

Hi, I have an issue while using the led matrix with the library.

I'm using a 96x48 pixel matrix with SM5166PC chipset and have index error in x axis.

As you can see in the image (0, 0) of the matrix doesn't start from left top corner.

I found that the index of x axis starts with 32-63 and then goes to 0-63.

32 to 63 index are repeated.

Is there any ways to set indexes of the matrix again or any other ways to solve this problem?

[mrcodetastic]

You found a bug that seemingly hasn't been detected for quite some time since I made changes to this library to include ESP32-S3 support.

You shouldn't need to edit the .hpp file to invert the clock (but you had to due toa bug).

You can pass to the mxconfig.clkphase = true; as part of the library config on initialisation.