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LP-EM-CC2340R5: LP-EM-CC2340R5开发板Uart口数据无法发送到BLE

Part Number: LP-EM-CC2340R5
Other Parts Discussed in Thread: CC2340R5, LP-XDS110ET

https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1263726/cc2340r5-uart-to-ble-bridge-example-based-on-the-official-data-stream-one-from-ti
运行这个demo,连接手机端Simple link connect,USB转的虚拟UART可以正常收发数据;但是连接开发板DIO20和DIO22的串口能收到数据,输入的内容在移动端没有收到。

LP-EM-CC2340R5只有一路UART,收发数据为什么会不同?