BK7252 A9 camera hello world

Basic "Hello World" firmware for an A9 camera on Beken BK7252 chip. This project serves as a proof of concept to verify whether my code can function as firmware on this particular device.

Requirements

• usb uart adapter
• docker
• make
• tio or minicom
• https://github.com/tiancj/hid_download_py

Connect usb uart adapter to UART2 RX TX GND pins on device (watch image)

Build and flash

Do a backup before flash!!!

uartprogram -r 0x00011000_app_$(date +%Y-%m-%d_%H%M%S)_crc.bin

Reconnect power if uartprogram not connected to port.

now build and flash

make
uartprogram -w src/build/hello-world_crc.bin

Ensure "new firmware" is working.

tio -b 115200 /dev/ttyUSB0

Links

• https://github.com/daniel-dona/beken7252-opencam
• https://github.com/ghsecuritylab/tysdk_for_bk7231/tree/master/toolchain/encrypt_crc
• https://github.com/tiancj/hid_download_py