Lacking pins for OV2640 DCMI on STM32F469I-DISCO

[carri453]

 

This is the pinout for the STM32F469I-DISCO and OV2640, I have been able to find pins for most of them but am having trouble:

• DCMI Pinout: (Pin function : Actual pin name)
• DCMI_D0 : PC6
• DCMI_D1: PC7
• DCMI_D2: PG10
• DCMI_D3: PG11
• DCMI_D4: Missing
• DCMI_D5: PD3
• DCMI_D6: Conflict with PB8
• DCMI_D7: Conflict with PB9
• DCMI_VSYNC: PG9
• DCMI_HSYNC: PA4
• DCMI_PIXCLK: PA6
• RCC_MCO_1: PA8 (Note: we can use this pin to generate the XCLK signal needed by the OV2640
• SIOC: PB8
• SIOD: PB9
  

I would appreciate it if anyone has a solution for this, thanks

[TDK]

The datasheet of the chip lists all pins available for DCMI functions.

> DCMI_D4: Missing

PE4 or PH14

Those pins are already in use on the board and aren't exposed on any headers, so you'll need to do that manually.

https://www.st.com/resource/en/schematic_pack/mb1189-c01_schematic.pdf

 

Generally Nucleo board are better for connecting dense external peripherals. On discovery boards most pins are already in use.

[carri453]

So if there are no exposed pins then am I better off buying another board or is there another way to still use it?

[TDK]

It can be done if you have the experience and equipment to solder wires to a trace or to pads. But a different board is going to be much easier.