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is dcmi from stm32L4 compatible with stm32L4+ ?

stan_av
Associate II

Is there a difference in the usage of the DCMI peripheral between the l4 (STM32L49x) microcontrollers and the l4+ (STM32L4R5xx) chips? 

I have a camera working with dma on dcmi with the STM32L496, but the same c code does not work correctly with STM32L4R5AG. Other peripherals (usb, gpios etc) work fine.

I find that instead of capturing a frame (in snapshot mode) the dcmi shows an overrun error with OVR_RIS set, and no frames are stored in the fifo or DMA memory location

Also which minimum CUBE version should be used ?

thanks

2 REPLIES 2

I'd watch for differences in clocking structures, the rates of different buses, the dividers and PLL sources for different peripherals.

Review BSP of EVAL boards supporting camera connectivity.

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stan_av
Associate II

Thanks for the reply.

There does not seem to be an l4+ board with a dcmi project ..