ESP32 can stream I/Q up to 80MSPS 10bit from 2GHz/5GHz by tapping Wifi/BT stage (github.com)

Espressif has unveiled a significant enhancement for its ESP32 chips by introducing firmware that allows these devices to stream I/Q (in-phase/quadrature) data up to 80 MSPS (Million Samples Per Second) at 10-bit resolution directly from their internal Wi-Fi and Bluetooth components. This breakthrough reveals an undocumented feature of the ESP32, enabling these low-cost chips to function as efficient software-defined radio (SDR) receivers across both the 2.4 GHz and 5 GHz bands. Such capabilities were made more accessible through the use of large language models (LLMs) that aided in developing the necessary firmware, showcasing the synergy of AI with hardware innovation. This development is pivotal for the AI/ML community as it lowers the barrier to entry for high-performance signal processing and SDR applications, which have traditionally required expensive and specialized equipment. With broad support across the ESP32 chip family, users can now employ these versatile microcontrollers for projects that require rapid data sampling without additional components. From tuning ranges of 100-6000 MHz in 1 MHz increments to adjustable gains and bandwidth capabilities, the firmware provides robust features for developers looking to innovate in areas such as wireless communications, IoT applications, and automated signal processing.