UsbSerial library - Supports FTDI, Arduinos and other USB serial devices

Status
Not open for further replies.
T

Toley

Active Member
Licensed User
Longtime User
Hello Erel,

I don't know what did happen but it don't work anymore. I got this error message on the filtered log:
B4X: 
Connected successfully!
Error: (IOException) java.io.IOException: Expected at least 2 bytes
On the unfiltered log I have this:
B4X: 
open called for devices 00000002 in mode 0...
getAlsaDeviceName::devices 0x2 IsVoiceCallDevice 0 devName music
Reset buffer size to 4096 and latency to 92879
Set PLAYBACK PCM format to S16_LE (Signed 16 bit Little Endian)
Using 2 channels for PLAYBACK.
Set PLAYBACK sample rate to 44100 HZ
Buffer size: 4096
Period size: 1024
Latency: 92879
Period Time: 23219
Periods: 4
Initialized ALSA PLAYBACK device music
Closing ALSA device!, curDev 0x2, curMode 0
open called for devices 00000002 in mode 0...
getAlsaDeviceName::devices 0x2 IsVoiceCallDevice 0 devName music
claimInterface 0 SUCCESS
Reset buffer size to 4096 and latency to 92879
Requested baudrate=115200, actual=115385
Set PLAYBACK PCM format to S16_LE (Signed 16 bit Little Endian)
Requested baudrate=9600, actual=9600
Using 2 channels for PLAYBACK.
Set PLAYBACK sample rate to 44100 HZ
Buffer size: 4096
Period size: 1024
Latency: 92879
Period Time: 23219
Periods: 4
Connected successfully!
Error: (IOException) java.io.IOException: Expected at least 2 bytes
close
Initialized ALSA PLAYBACK device music
Closing ALSA device!, curDev 0x2, curMode 0
Do you have an idea ? I'm not 100% sure but I believe I was not on version 2.50 when I first try the library.
Thank you.
 
M

marcomilazzo

Member
Licensed User
Longtime User
ft311d ftdi usb chip

Hi
i made the sw for the ft311d
it works but i needs ti be better.Maybe Erel can make a lib!
Now i'm trying to use the usbserial library and i have some question
1)i need to "Enable USB-Host Controller on any Android
i can't write the line in that directory! wich is the best apk or other way to write this line?
2) how did you connect the ft232r to a phone? i tried with an adaptor from the micro usb to the normal usb but obviously there is no vcc....
ciao
marc
 
M

marcomilazzo

Member
Licensed User
Longtime User
ft311d

Yes of course! it was only because i posted in the wrong post

can you please answer to my above questions?
wishing to use your lib,
how do i change the xml
and
is there a special adapter to connect the ft232 to the mini usb?

thank's a lot
marco
 
viriato

viriato

Member
Licensed User
Longtime User
Erel,
Thanks , I made a complete installation and now I am available to compile and run on my Samsumg Note 1 , but I am not able to communicate from my Note to serial device with FT231 , I just have program running on device no errors no activity , do you know if somebody made a try on S Note ?
Any suggestion will be welcome
Thank you
 
viriato

viriato

Member
Licensed User
Longtime User
Erel,
I got this on log , but i suppose this is related to PC emulator not device ?

-------------------------------------------------------------
LogCat connected to: emulator-5554
** Activity (main) Create, isFirst = true **


** Activity (main) Resume **


main_btnopen_click (java line: 283)
java.lang.NoClassDefFoundError: android.hardware.usb.UsbManager
at anywheresoftware.b4a.objects.UsbSerial.Open(UsbSerial.java:28)
at b4a.example1.main._btnopen_click(main.java:283)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:155)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:151)
at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:55)
at android.view.View.performClick(View.java:2485)
at android.view.View$PerformClick.run(View.java:9080)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:3683)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)
Thanks you
 
M

marcomilazzo

Member
Licensed User
Longtime User
serial lib

Hi
I'm trying to get the serial lib to work!
I'm using an otg cable
Now i see that the ft232r is present (usb host controller) but the software still doesn't connect.
I connected for a try a memory card reader and it works!
Any way to resolve the problem?
ciao marco
 
M

marcomilazzo

Member
Licensed User
Longtime User
Hi Erel
i get "Error opening USB port"
the phone is a galaxy chat bt5330
the pnone work as accesory mode
It also reads multimedia with an otg cable
So it looks that usb is working
I tried the usbserial lib with a samsung note and it works just fine!
I'm getting crazy:BangHead:
marco
 
S

Scantech

Well-Known Member
Licensed User
Longtime User
Hello Erel,

Any chance we can get the updated version of this library. 2 days ago they added support for cp2102 device.

Thanks
 
Status
Not open for further replies.
Top