STM32H7 evaluation boards for testing DCMI?

[M. Jeong]

Posted on August 13, 2017 at 01:10

Would it be possible to test the DCMI interface using the evaluation boards that are currently available? The H7 series has an enhanced DCMI controller compared to the previous products. But  H743, H753 boards don't seem to have DCMI pins exposed to outside. Am I missing something?

[john doe]

Posted on August 13, 2017 at 04:06

There's a Nucleo 144 board with STM32H743ZI

If you're a big enough player to already have an H7 eval board you can probably get the nucleo then.

[Cedric LECOUTRE]

Posted on August 18, 2017 at 11:01

Hi

Jeong.Minjin

‌,

The pins you are looking for on STM32H743I-EVAL related to DCMI peripheral are exposed through extension connectors (see figure 34 page 62 of

http://www.st.com/resource/en/user_manual/dm00385pdf

evaluation board user manual). If you have an eval board in front of you, they are located below the LCD screen which can be unmounted (see CN6, CN7, CN10 & CN11 on figure 3 page 10 of UM2198, along with section 9.6 and 9.10).

To configure it, I would suggest to create a simple project under STM32CubeMX for an STM32H743XI, only activating DCMI. When choosing for example mode Slave 8 bits Embedded synchro, the 9 pins proposed by default are all accessible on these connectors.

Best regards,

Cedric

[M. Jeong]

Posted on August 18, 2017 at 11:49

Hi Cedric, 

Thank you very much for letting me know that the H743-eval board has the DCMI pins exposed. In fact I was wondering if one could use 12-bit DCMI. Would this be possible with the H743-eval board or H753-eval board? 

Best regards,

Minjin

[Cedric LECOUTRE]

Posted on August 18, 2017 at 14:43

Hi

Jeong.Minjin

,

For DCMI 12 bits, you should then select under STM32CubexM DCMI Slave 12 bits external synchro, and you will see that the proposed configuration is using 15 pins, again all mapped on the extension connectors.

STM32H743I-EVAL or STM32H753I-EVAL reference boards are using the same MB1246 motherboard (the one with the MCU), so you have the same connectors accessible in both cases, and there will be no difference for your application.

Best regards,

Cedric

[M. Jeong]

Posted on August 18, 2017 at 14:46

Hi Cedric,

thank you for the clear answer! 

best regards,

Minjin