Apr 30, 2024 · The SPI/I2S module in STM32 is only simplex when it operates in I2S mode, i.e. it has only one data line. To support full-duplex I2S, for some SPI/I2S modules 'F429 (and a few other STM32) incorporate a second, simplified SPI/I2S module called I2Sext, which has only I2S mode (no SPI mode) and its clocks (WS and CK) are internally interconnected ...

Mar 31, 2025 · Hi, I have a board with an STM32U575 at the core. I'm attempting to set up SAI receiver in I2S mode, with 32-bit 48kHz sampling. See my configuration of SAI A below: I also want to receive the data continuously in circular mode via DMA (or GPDMA in the case of this MCU). Reading other sources, I'v...

Nov 1, 2023 · It seems to me that multiplexing the I2S bus is an option, but I have limited experience of multiplexing clocked data in this way. Can anyone advise a good strategy, or suitable resources? Thanks! For reference, the STM32 code works as follows (simplfied): Capture I2S channel data into a buffer (one buffer per channel.

Apr 10, 2020 · The microcontroller will be doing little else besides some very light processing on the audio data. The I2S source has a single MCK, SCK, WS, and 4 stereo outputs (3 of which will be used), and the I2S source can ONLY function as a master device, leaving me to use the STM32 as a slave. I see that th...

Posted on April 06, 2016 at 11:20 Hi, I need to get 24bit data via I2S interface from a microphone.It is said on Reference Manual that I need to get the data twice, and 16 bits for each time.Also the 8 LSB should be cleared.

Nov 20, 2023 · Hi All Trying to get an understanding of how I2S with DMA works using the STM32Cube IDE by implementing a simple audio loop-through application. Connected the STM32F407G Discovery board to a Digilent PMOD I2S2 codec and set up using the STMCube IDE GUI as follows: PC2 = I2S2_ext_SD, PC3 = I2S2_SD, P...

May 15, 2019 · Hi again, I'm attempting to use the I2S peripheral on the STM32H7, and the CubeMX produces half-duplex code. Here you see that I'm using an STM32H743, selected I2S, full-duplex slave, but the only choices of mode I get are Mode Slave Transmit and Mode Slave Receive. There is no full duplex mode sel...

Jan 17, 2019 · Hello STM32 Community! My I2S dma transfer worked perfectly on stm32f7x in the past, but due to time critical calculations i just started to continue the development on the advanced stm32h7 system.

Feb 29, 2024 · Hello, I have a setup where I use an STM32H747XIH6U and an ADAU1361 codec on the I2S-interface. I want to use the PDM-mics on the ADAU, and in order to do that, ADAU has to be in I2S master mode according to the datasheet. Consequently, STM has to be in slave mode. However, in slave mode STM does no...

Oct 5, 2020 · In STM32 i used the HAL_I2S_Transmit_DMA (&hi2s2, data, NUM_ELEMENTS); function to transmit the data. It play the similar sound, but the rate is not matching with the original rate.