c# - Serial Port data capturing issue

Question

I receive serial port data in the textbox when i connect the GPS device to the serial port, But when i connect the Aristel rv20 PBX to the same port, the received data from PBX is not shown in the textbox. what would i miss?

Answer 1

我找到了解决方案，实际上我没有启用数据终端。所以我在 StartListening() 方法中启用它，如下所示：

_serialPort.DtrEnable = true;

它在串行通信期间启用数据终端就绪 (DTR) 信号。