ARM7单片机的程序 串口 定时器 IO口 中断都已经通过实验驱动 来拿可以直接使用，里面是控制FM1702的程序 SPI串口的-ARM7 microcontroller program serial IO port interrupt timer have been driven to come and collect through experiments can be used directly, which is to control the FM1702 procedures SPI serial