gps电子罗盘智能导航，集成模式1，2寻迹避障。(GPS and electronic compass,intelligent navigation,track car and Obstacle avoidance trolley)

stm32通过模拟iic驱动qmc5883l通过spi驱动si4432 实现数据发送接收(STM32 realizes data sending and receiving by simulating IIC driving qmc5883l through SPI driving Si4432.)