The firmware for the Allwinner A133 is responsible for initializing the hardware components, configuring the system, and providing a platform for running operating systems. The firmware is typically stored in non-volatile memory, such as NAND flash or SPI NOR flash.
Boot ROM (BROM) -> Boot0 (SPL) -> U-Boot (TianoCore) -> Firmware (Android/Linux) allwinner+a133+firmware+work
This would require modifying the uboot source code and the ARISC (Always-On RISC-V) firmware to handle the low-level sensor polling without waking the main ARM cores. The firmware for the Allwinner A133 is responsible
screen /dev/ttyUSB0 115200