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Fast gpio read with sync

Question asked by Kilohercas on Feb 5, 2013
Latest reply on Feb 6, 2013 by waclawek.jan

Hello, I have 16b parallel bus, 8MHz adc, and I need to read as fast as I can data to memory array which is 128 point long. So far I overclocked stm32f4 to 250MHz so I could do it faster. Original code is :
         while((GPIOA-IDR & GPIO_Pin15)==GPIO_Pin15)
         while((GPIOA-IDR & GPIO_Pin15)! =GPIO_Pin15)
Can I do it faster with fsmc or dma ? A15 is clk from adc, sync should be done on rising edge