An extra SPI clock between consecutive calls to the SPI transmission function.

[Tung]

Hi everyone,

I am using SPI1 on the STM32U575 to transmit data, and my issue is that between consecutive calls to the SPI transmission function, there is an extra long clock pulse instead of no clock pulse at all.

 This is my first time using the STM32U575, so I hope someone can help me resolve this issue.

Below is the code and configuration:

HAL_SPI_Transmit(&hspi1, tx_buf_1, 5, 200); // Byte 0 - 4

HAL_SPI_Transmit(&hspi1, tx_buf_2, 2, 200); // Byte 5 - 6

 Thanks.

[AScha.3 · Accepted solution]

try : in Cube -> master keep io state -> enable !

[Tung]

I have tested my software again with your response, and it is working. Thank you for your feedback.