新买的开发板,指导文件中有说明使用5V驱动电压需要将跳线JP3和JP1接通,这只是硬件的操作,但从原理图中看得出Tx5vEn脚也要使能升压芯片产生5V电压,不知道怎么操作才能使得升压芯片产生5V电压。请老师指导一下,谢谢!
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新买的开发板,指导文件中有说明使用5V驱动电压需要将跳线JP3和JP1接通,这只是硬件的操作,但从原理图中看得出Tx5vEn脚也要使能升压芯片产生5V电压,不知道怎么操作才能使得升压芯片产生5V电压。请老师指导一下,谢谢!