rxtx

Blue led is blinking after powering up the module, the red one stays on, I can even connect to it via wifi. But I cannot program it. I tried Arduino IDE, different firmware flashers (Like NodeMCU, XTCOM). I'm using Arduino Mega. Here's my initial setup: VCC - 3.3 V on Arduino RST - nothing CH_PD - 3.3 V on Arduino TX - RX on Arduino (TX is transmitting data to RX, so I don't need a voltage divider, right?) RX - voltage divider (R1 = 10K, R2 = 20K) - TX on Arduino GPIO0 - GND on Arduino GPIO2 - nothing GND - GND on Arduino Then I tried uploading a sketch from the Arduino IDE and got the

I want to install an rxtx bundle on my Raspberry Pi the bundle will be running on KURA platform (Equinox is the OSGi container for Kura) I installed the rxtx native library using: sudo apt-get install librxtx-java the .so was installed on the directory: /usr/lib/jni/ pi@raspberrypi /usr/lib/jni $ ls librxtxI2C-2.2pre1.so librxtxParallel.so librxtxRS485-2.2pre1.so librxtxSerial-2.2pre1.so librxtxI2C.so librxtxRaw-2.2pre1.so librxtxRS485.so librxtxSerial.so librxtxParallel-2.2pre1.so librxtxRaw.so Then I followed this link to wrappe the rxtx library in a bundle http://rxtx.qbang.org/wiki/index

When retrieving available serial ports using the Rxtx library (see second example), the close() method will block, even if the port has been successfully opened. How do I set a timeout on the close operation so I won't be stuck? Note that these methods are very poorly documented. Note that I just found this relevant thread . I'll report back soon. Update - Here's another thread . Still no luck yet... 来源： https://stackoverflow.com/questions/8926705/how-to-close-rxtx-serial-port

To write an java application to communicate with serial port devices on windows environment , browsed in google seem to be divert to many directions also fond some of the third party tools library like RXTX JavaComm . On trying with RXTX sample codes using eclipse Reference . No serial ports were displayed in output just blank Output : Stable Library Native lib Version = RXTX-2.1-7 Java lib Version = RXTX-2.1-7 What mistake i have did ? Let me know that is this approach is the better or suggest me better solution ? Kindly let me know the alternatives for this problem , i wanna communicate with

I am trying to build an applet that can open a serial port and communicate with the same. I have used rxtxcomm.jar for the serial communications. I have an applet built that works in the eclipese environment perfectly. I built the Jar file and signed the same, but when run in the browser the console shows the foll: java.lang.ExceptionInInitializerError thrown while loading gnu.io.RXTXCommDriver Exception in thread "thread applet-zhas_xbeeComm.xtalk-1" java.lang.ExceptionInInitializerError at zhas_xbeeComm.Xconnect$1.run(Xconnect.java:46) at java.security.AccessController.doPrivileged(Native