About Dhanaraj

Dhanaraj · 2024-01-22

Hi,I have an external ADC connected to my STM32L55 using the I2S interface. The ADC is sampling 4-channel 16-bit data at 48000Hz sampling rate. However, I have encountered issues while streaming a large amount of data using USB CDC. Therefore, I am c...

Dhanaraj · 2023-09-04

I have an ADC connected to my MCU using I2S. MCU configured in I2S master receive mode. MCU supplying the ADC with 12MHZ MCLK. MCU sampling freq is 48 KHZ(Actual is 46.875 KHZ), Number of slots are 4, Data size is 16bits and I2S standard protocol. Us...

Dhanaraj · 2024-01-26

After modifying the USB descriptor, my STM was neither detected as a speaker nor a Mic. I captured the USB description on the Windows side; the data is below. I am referring to this page for my changes (https://hackaday.io/project/181868-stm32f4-usb-...

Dhanaraj · 2023-09-06

Thanks for your reply. External ADC -> STM SAI -> STM CDC -> Host PC. My I2S DMA trigger rate is correct at 47khz. My CDC transfer rate is lower than the 47khz which is preventing me sync the I2S DMA Rx and CDC Tx. Even if I use the double buffer it'...

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STM32L55 USB microphone 4 channels using external I2S

STM32L552 I2S DMA and CDC continuous transfer problem

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Re: STM32L552 I2S DMA and CDC continuous transfer problem