Application Scenario: We have used DMA, FSMC, and DCMI module of the STM32. DMA is configured
to read the data from the DCMI out output register DR, and write it it to external SRAM. Likely DCMI is
configured as an Peripheral and SRAM is configured as a memory port of the DMA. Data transfer width
is configured as an word in case of peripheral port and half-word in case of memory port. SRAM is configured
on address 0x64000000. Problem: The whole system works fine as long as we configure DCMI to take JPEG
image up to 262KByte, but when we configured it to take picture of the higher quality, DMA is not able to store
the data in SRAM, above the address 3ffff, so we get only 262143 bytes maximum. after that we receive only 0xFF.
What we have verified so far: 1) FSMC part is configured fine 2) SRAM is written and read back by using internal memory, it works fine. 3) I believe there is no point of having doubts on DCMI module, If It is not configured good then It should not be working for the images under 262K.