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how does fmc work does it use spi?
there is a delay between caling dcmi_start_dma function and data being actually received in dcmi_dr in stm32l4r9discovery the pixel clock is 24 mhz 
can i use B-CAMS-OMV with smt32l4r9 discovery kit? if yes what are the steps that i should follow, sorry i am a beginner, can someone please share link to resources as well or any specific trainings?
i'm using stm32l4r9 discovery kit and the built in led of stm32l4r9 discovery kit works but led attached to other gpios don't work. no mater if i set or rest it.