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Unveiling secrets of the ESP32 part 2: reverse engineering RX
Reverse engineering the ESP32 Wi-Fi receive registers and showing off a proof-of-concept
Write some other memory peripherals to configure the settings for the packet you’re about to transmit Write the address of the DMA struct to a memory mapped IO address The hardware then automatically reads the DMA struct, and transmits the packet After this is done, interrupt 0 will fire, telling us how succesful the transmission was We extended the blog post code a bit to also send data frames at the end of the connection setup, and verified that everything was working. The two hardest (but most important) tasks are implementing hardware initialization, and connecting our sending and receiving primitives to an open source 802.11 MAC stack.
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