无法从Android DSPS发送文本到Putty串行终端

大家好，

我一直在尝试获得最新的SPS演示应用程序。我设法使用Connection Manager将程序加载到DA14580上，并获取Android DSPS应用程序以查找并连接到我的DA14580（我正在使用Pan1740 USB模块）。我的问题是我不能将任何文本从我的Android DSPS应用程序发送到Putty串行终端屏幕。Going the reverse direction works correctly (e.g., Once connected I can send text from the Putty Serial Terminal to the android, and the letters show up on the android screen, but typing text on the android does not cause the letters to show up on the Putty Serial Terminal Screen). I was wondering if anyone knew why this was happening and what I can do about it. I remember when the SPS first came out, I was able to send and receive data in both directions, but now I've got this problem. Also I tried both the Console and RX/TX modes in the android app.

任何一点帮助都非常感谢:)
- 诞..