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enpassant · 2024-09-05

Hi,I am using a STM32F407 with the TLV320AIC3204 audio codec. I have verified that the I2S works with a logic analyzer:I am trying to read the data using DMA (I tried both circular and normal).Here is my I2S configuration: I made sure to add the foll...

enpassant · 2024-09-05

If we look at the HAL_I2S_Receive_DMA function, it only accepts 16 bit arrays for pData. So I am forced to use 16 bits for DMA too. I tried using "Word" instead of "Half-Word", but it just writes 16 bit values regardless.You can also see that if it i...

enpassant · 2024-09-05

@TDK wrote:If you want WS to be low, shouldn't your statements be reversed? // WS is high or low here while (!HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_12)); // wait while WS is low // WS is high here, but could be mid-transaction while (HAL_GPIO_ReadPin(GP...

enpassant · 2024-09-05

I tried that by using this: // while (HAL_GPIO_ReadPin (GPIOB, GPIO_PIN_12)); // while (!HAL_GPIO_ReadPin (GPIOB, GPIO_PIN_12)); // Wait for WS = LOW Is there a smarter way of doing it? Right now I'm just waiting for the WS pin to change from high to...

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I2S not working on 32-bit data with DMA

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