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寻求CC2540的资料，找了很久了，还是没找到详细的寄存器说明 以及端口IO说明，例如USART0位于哪个IO
建议将问题发至 蓝牙的板块
您可以参考TI的CC2540的用户指南或者数据手册 http://www.ti.com.cn/cn/lit/ug/swru191f/swru191f.pdf
或者 http://www.ti.com.cn/cn/lit/ds/symlink/cc2540.pdf 第17页
