Posted on June 25, 2017 at 18:46Hi,
I'm working on the STM32F769I-Eval board and trying to get frames from the ov7740 using the DCMI and DMA (stream 2 channel 1). my problem is as so: the ov7740 is in VGA format (640 x 480). when I'm trying to use the HAL_DCMI_Start_DMA function I'm not getting the frame received event (I call this function with a buffer defined in the sram sized 0x25800 as I saw in the STM32F7 snapshot example).
I can see that the buffer is getting values but no frame event is called.
When I set the buffer size to 0x9600 I do get frame event.
Help will be appreciated
!
Avner
