About GChen.5

GChen.5 · 2022-03-22

I tried the BSP example for H735G-DK, but it doesn't work.What I want to do is get an audio wave from line_in (the blue audio jack on the board).The setup for SAI1 is in the picture, I can play the audio through the line out without any problem but c...

GChen.5 · 2022-03-20

I'm using CubeMX to generate the start file rather than the BSP example. When I tried to set the DMA2D, I found that the start address will be shifted by 0xC.... // setup octospi2 for hyperram, dma2d and ltdc above uint32_t col; uint32_t startAdd = 0...

GChen.5 · 2021-10-14

I was trying to read the 24AA64FT EEPROM using the I2C DMA methods. But the I2C read will break after reading 2 bytes for no reason, and both SDA and SCL stay low. As you can see in the picture, the reading starts with writing 0x50 (0xA0 >> 1) to the...

GChen.5 · 2022-03-24

Finally, I managed to make it right, the Frame Synchro Offset of SAI-A didn't match the SAI-B's settings. It should be 'Before First Bit'.And the amplitude problem is caused by the input volume of wm8994.

GChen.5 · 2022-03-23

Hi MMuba.1, thanks a lot for your nice tutorial, but I still have the problem that the received value is too small. If I disable the 30 dB gain, the maximum received value would be 30, if I enable the 30 dB gain, the maximum received value is 70. I e...

GChen.5 · 2022-03-22

It seems something happened with the first bit of some data. The received values are something like ...,32761,32765,3,8,13,... which should be ...,-7 (32761-32768), -3 (32765 - 32768), 3, 8, 13,...Even if I modify the value manually, the value seems ...

GChen.5 · 2022-03-20

I solved the problem, when I set the S70KL1281, the latency should be set to 3 instead of 6.S70KL1281_WriteCfgReg0(&hospi2, reg, HAL_OSPI_FIXED_LATENCY, OPTIMAL_FIXED_INITIAL_LATENCY); // the OPTIMAL_FIXED_INITIAL_LATENCY=3

GChen.5 · 2021-10-15

I solved the problem by place the DMA init before I2C init.MX_GPIO_Init(); MX_DMA_Init(); MX_I2C1_Init();I'm using the STM32CubeMX 6.3.0 Linux version. Hope this problem will be fixed in the future.

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How to get the audio line-in data from the STM32H735G-DK?

STM32H735G-DK's DMA2D Start Address Drifts

STM32F405RG HAL_I2C_Mem_Read_DMA stopped after reading 2 bytes.

Re: How to get the audio line-in data from the STM32H735G-DK?

Re: How to get the audio line-in data from the STM32H735G-DK?

Re: How to get the audio line-in data from the STM32H735G-DK?

Re: STM32H735G-DK's DMA2D Start Address Drifts

Re: STM32F405RG HAL_I2C_Mem_Read_DMA stopped after reading 2 bytes.