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i2s/stm32f4: Fix duplex DMA mode #3733

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Merged
kasjer merged 1 commit into from
Aug 28, 2026
+8 −2
Merged

i2s/stm32f4: Fix duplex DMA mode #3733

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10 changes: 8 additions & 2 deletions hw/drivers/i2s/i2s_stm32f4/src/i2s_stm32f4.c
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Original file line number Diff line number Diff line change
Expand Up @@ -668,6 +668,12 @@ i2s_transmit_start_dma(I2S_HandleTypeDef *hi2s, uint16_t *buf0, uint16_t *buf1,
}

#if I2S_FULLDUPLEX_SUPPORT

static void
i2s_dma_mx_complete_ignore(DMA_HandleTypeDef *hdma)
{
}

static HAL_StatusTypeDef
i2s_transmit_receive_dma(I2S_HandleTypeDef *hi2s, uint16_t *buf0, uint16_t *buf1, uint16_t sample_count)
{
Expand Down Expand Up @@ -724,8 +730,8 @@ i2s_transmit_receive_dma(I2S_HandleTypeDef *hi2s, uint16_t *buf0, uint16_t *buf1
hi2s->hdmarx->Instance->CR &= ~DMA_SxCR_CT_Msk;

/* Set the I2S Tx DMA transfer complete callback */
hi2s->hdmatx->XferCpltCallback = i2s_dma_m0_complete;
hi2s->hdmatx->XferM1CpltCallback = i2s_dma_m1_complete;
hi2s->hdmatx->XferCpltCallback = i2s_dma_mx_complete_ignore;
hi2s->hdmatx->XferM1CpltCallback = i2s_dma_mx_complete_ignore;

/* Set the I2S Tx DMA error callback */
hi2s->hdmatx->XferErrorCallback = i2s_dma_error;
Expand Down
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