STM32F205 DCMI

[tomaskrueger]

Posted on May 15, 2014 at 13:27

Hello Forum,

I do have a STM32F205VE device 100Pin Package to which i connected a Camera as to the DCMI Interface. From the DCMI Status register i can tell, that HSYNC and VSYNC are detected. However, nothing is captured. The PXCLK  (Pixelclock) is routed to PA6  (AF=DCMI PXCLK). Somewhere in the datasheet i now red that DCMI is not supported on STMF205 devices. Is that true? It seems that PA6 (Pixelclock) is not reaching the DCMI module allthough present on the Pin. Thanks. #stm32f205-dcmi

[Tesla DeLorean]

Posted on May 15, 2014 at 18:40

It's in the data sheet for the part, so I'd say that's pretty fatal to your application.

''2.2.31 Digital camera interface (DCMI) The camera interface is not available in STM32F205xx devices. STM32F207xx products embed a camera interface that can connect with camera modules and CMOS sensors through an 8-bit to 14-bit parallel interface, to receive video data. The camera interface can sustain up to 27 Mbyte/s at 27 MHz or 48 Mbyte/s at 48 MHz. It features:''

[tomaskrueger]

Posted on May 16, 2014 at 15:56 eeeeh, i feared so. A Software Camera Interface would be a kind of too much i guess. But...the STM32F207  100pin package should be Pin compatible....so i have to swap the device. Well on the 205 the DCMI module is there as i can access its registers. But not all Alternate Functions connect to all necessary pins. Thanks anyway for reasuring this fact.

[Tesla DeLorean]

Posted on May 16, 2014 at 16:13

Yes, should be able to place a 207 or 407, the 05's are missing ETHERNET, and apparently DCMI. I'm not using cameras so easy enough to miss.

The manual says it doesn't work, your physical testing confirms, reasonably definitive.