[{"title":"( 2 个子文件 3.21MB ) STM32F407 ARM开发板PDF原理图PCB图+AD集成封装库文件.zip","children":[{"title":"Explorer STM32F4_V2.2.pdf <span style='color:#111;'> 3.32MB </span>","children":null,"spread":false},{"title":"STM32F407开发板集成库.IntLib <span style='color:#111;'> 1.63MB </span>","children":null,"spread":false}],"spread":true}]