STM32自带ADC,DAC转换，启动DMA传输-STM32 bring ADC and DAC conversion, start DMA transmission

linux下ymodem协议下载工具源码，主要功能是配合stm32串口更新固件程序-Ymodem download the source code under the Linux protocol, the main function is to coordinate with the STM32 serial port to update the firmware

Code, there are very complete notes and explanations Including Deng's correlation, absolute correlation, correlation of slope, improved absolute correlation, Conducted through virtual array DOA estimation.

ATK-OV7725 模块摄像头源代码 方便大家使用STM32系列(ATK-OV7725 module camera source code is convenient for everyone to use)