CC2540入門請教

請問有PC端 跟 CC2540 溝通的API或參考資料嗎?

我想在PC寫軟體配合應用。

PC连接CC2540必须要PC支持BLE4.0，这块软件实现需要自己开发，请参考这个帖子：http://www.deyisupport.com/question_answer/wireless_connectivity/bluetooth/f/103/t/61393.aspx

意思是說透過USB Dongle就能跟周邊CC2540做溝通，那有對USB Dongle下Command 的 api嗎?

您可以使用BTooL工具。

BTool is a PC Application that allows a user to form a connection between two BLE devices. BTool works by communicating with the CC2540, acting as a network processor, by means of HCI vendor specific commands.

具体信息您可以参考http://www.ti.com.cn/cn/lit/ug/swru270c/swru270c.pdf page9。