Is DCMI DMA on STM32H743 request 74 or 75?

[LKan.1]

according to https://www.st.com/resource/en/application_note/dm00373474-digital-camera-interface-dcmi-on-stm32-mcus-stmicroelectronics.pdf sec 4.4.3, it says request 74. But according to the reference manual https://www.st.com/resource/en/reference_manual/dm00314099-stm32h742-stm32h743-753-and-stm32h750-value-line-advanced-arm-based-32-bit-mcus-stmicroelectronics.pdf Table 121, it says request 75.

Thanks

[Tesla DeLorean]

How hard would it be to just see which one works?

[Tesla DeLorean]

Not very in my estimation, I'd go with the RM, odds of that are way better than 50/50

STM32Cube_FW_H7_V1.8.0\Drivers\STM32H7xx_HAL_Driver\Inc\stm32h7xx_hal_dma.h

#define DMA_REQUEST_I2C3_TX     74U /*!< DMAMUX1 I2C3 TX request  */

#if defined (PSSI)

#define DMA_REQUEST_DCMI_PSSI    75U /*!< DMAMUX1 DCMI/PSSI request  */

#define DMA_REQUEST_DCMI       DMA_REQUEST_DCMI_PSSI /* Legacy define */

#else

#define DMA_REQUEST_DCMI       75U /*!< DMAMUX1 DCMI request     */

#endif /* PSSI */

#define DMA_REQUEST_CRYP_IN     76U /*!< DMAMUX1 CRYP IN request  */

#define DMA_REQUEST_CRYP_OUT     77U /*!< DMAMUX1 CRYP OUT request */

[Imen.D · Accepted solution]

Hello @LKan.1​ ,

The correct value for the DMA request MUX input for DCMI is 75.

I raised the request internally to correct the AN5020.

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Imen