Hi, We are building a custom app for the MINI6410 running Android. This app requires us to add a barcode scanner through the RS232 port of the mini6410. I have not seen how to actually read the serial ports on Android. Is there any example code, drivers or libraries that need to be installed to make the Barcode Scanner work with the RS232 on Android? Thanks, Roberto
Hi Roberto, Did you ever manage to get RS232 working with the Android OS on your Mini6410? I am still looking to see how to do this as I need to implement Modbus over RS485 or RS232 from within an Android Java application. Cheers Dave...
I'm also looking for the same solution.
Using this code you can get the serial ports to work under Android on the mini6410 but you need a little work to rebuild the Android OS for it to work first time. http://code.google.com/p/android-serialport-api/ You need to rebuild with genroot.sh and include the following 3 lines after the mknod for the ports. Without these I got permission errors when I tried to open the ports. # The following is needed to allow user access to the serial ports chmod 666 rootfs_dir/dev/s3c2410_serial1 chmod 666 rootfs_dir/dev/s3c2410_serial2 chmod 666 rootfs_dir/dev/s3c2410_serial3 The init.rc should do this but for some reason it don't work. I also had to change the serialport-api SerialPort.c code to remove the O_DIRECT flag on the open and then recompile (You need the Android NDK to do this) and then I was able to open the ports and send and receive data. If anyone has any questions on this, give me a shout? Dave...
mr.dave can you share a video about that?
Hi Dave, forgive me if this is a dumb question, but what is genroot.sh? A google search returns your post as the 3rd result from the top :p. I also see a link to the file but I'm not sure how to use it in building the serial port library (I'm admittedly a bit of a novice). I'm actually working on the exact same application as you, modbus over rs485, and I'm having some trouble with permissions as well as sending and receiving messages. Any help you can offer would be appreciated. You can email me if you want to discuss. dan770 at gma.l.com Thanks
I have the same problem, but i don't know what genroot.sh is? and how to add 3 line chmod 666 rootfs_dir/dev/s3c2410_serial1 chmod 666 rootfs_dir/dev/s3c2410_serial2 chmod 666 rootfs_dir/dev/s3c2410_serial3 hope your help. thanks
Hi all, Sorry for the delay. genroot.sh is part of the source code to build Android that you should have received with the board. I'll see if I can find the web page that describes how to build Android the easy way. You need to use Linux to do this. Dan, I'll be in touch shortly. Dave...
Hi Everyone, I am trying to read data from a serial port in the below given opencv link, I have no problem with sending bytes. Everything works fine. There is a problem when i receive bytes. Every time a read a byte from ttymxc0 something happens and the byte is not only read for the first time it is sending some junk data but after pressing the the two enter keys it is able to read the data correctly but my concern to read the data without pressing any enter keys in the beginning only. http://code.google.com/p/android-serialport-api/source/checkout So could any body provide sme corrected code to get rid of this annoying serial port read problem, Am new to this android applications development, pls help me. Advanced Thanks, Srinivasan S
Hi My android has problem receiving data from my sensor. It is ok sending data. In the Loopback, it's always zero data received back. Can anyone give me a hand?
Hi, I want to send and receive files through Bluetooth from MINI6410. So I've tried to use Bluetooth dongle through the RS232 port of the mini6410. But the android OS does not detected that Bluetooth. if turn on the Bluetooth it is not working. How to solve that, please help. Thanks, praba
Hi, Is there any link, where I can find sample android application for UART communication? Where I can find list of API's which are used in serial port communication. Thanks, Prabha.