STM32H563ZIT6 SPI 16 bit with GPDMA linked list

[Oyulz.1]

Hello,

Trying to implement SPI bus (Master only) to transmit 16 bit to LCD, utilize linked list GPDMA ch 6, I looked at the UART linked list example and tried to modify it to work with SPI with no success, only the first half word is sent and then it stops without any interrupts...

I'm using the "HAL_SPI_Transmit_DMA" after initiate all linked list array by CubeMx.

Does any one has any SPI linked list example?     

[ELABI.1]

Hi @Oyulz.1 

Please check the size of the transmitted data for the HAL_SPI_Transmit_DMA() function (BUFFERSIZE). Perhaps you have declared it as 8 bits instead of 16 bits.

Also, check the configuration of the Linked List GPDMA. You can refer to this Knowledge Base article: "How to configure the linked list mode in STM32CubeMX", which might be helpful.

Additionally, take a look for this Application Note AN5593, specifically section 3.4.5 Serial Peripheral Interface (SPI), and this example from STM32CubeH5 "SPI_FullDuplex_ComDMA_Master Example Description".

Thank you.

ELABI.1

 

[Oyulz.1]

Hi ELABI.1, 

Thanks for your rapid response.

It seems that when I switch to 16 bit, the condition inside "HAL_SPI_Transmit_DMA" meets, and goto HAL_ERROR

As the variable SrcDataWidth does not initialize correctly... 

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@ELABI.1 wrote:

Hi @Oyulz.1 

Please check the size of the transmitted data for the HAL_SPI_Transmit_DMA() function (BUFFERSIZE). Perhaps you have declared it as 8 bits instead of 16 bits.

Also, check the configuration of the Linked List GPDMA. You can refer to this Knowledge Base article: "How to configure the linked list mode in STM32CubeMX", which might be helpful.

Additionally, take a look for this Application Note AN5593, specifically section 3.4.5 Serial Peripheral Interface (SPI), and this example from STM32CubeH5 "SPI_FullDuplex_ComDMA_Master Example Description".

Thank you.

ELABI.1

 

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[Oyulz.1]

/* Packing mode management is enabled by the DMA settings */
if (((hspi->Init.DataSize > SPI_DATASIZE_16BIT) && (hspi->hdmatx->Init.SrcDataWidth != DMA_SRC_DATAWIDTH_WORD) && (IS_SPI_FULL_INSTANCE(hspi->Instance))) || ((hspi->Init.DataSize > SPI_DATASIZE_8BIT) && (hspi->hdmatx->Init.SrcDataWidth == DMA_SRC_DATAWIDTH_BYTE)))
{
/* Restriction the DMA data received is not allowed in this mode */
__HAL_UNLOCK(hspi);
return HAL_ERROR;
}