Hello Owen, i'm a very new to the ESP32, but i had the same problem (see prior Post). The main problem is, that you can't use DMA transfer to external PSRAM. You can use DMA transfer to copy the data from XY into the internal ram. Then you have to copy the data from internal- to external memory (wit...

Hi Angus, thanks for the detailed answer. I think i were a little bit to optimistic in that topic. I think i have to outsource the camera grabbing (Altera MAX10 with SDRAM?) and use the fastest data transfer method to get the data into the ESP32 to send them via Wifi. I will further study the I/O fu...

Hello, i'm planning to use the I2S interface to attach a camera with parallel interface . Thats very challenging and there is a DMA implementation which uses a small video buffer. I need a matured video buffer with 2-3 MBytes. So i evaluate to send the single HLINE Data of 1000-1500 Bytes to the PSR...