As title, I want to use my raspi 3 to connect my smartphone and send data, but however it failed.
First, I use bluetoothctl and it can successfully scan my devices and build connection.
However, I fail when using hcitool. (I 've use hcitool dev to verify that it is truely hci0)
I type sudo hcitool hci0 lescan to scan my BLE devices (android smartphone) but my devices cannot be scanned. I've wonder to know what is the problem in it .......
(My bluetooth version is 5.43)
I am trying to Power on/off a device using appium. I modified Webdriver.py in Appium python client. I added a function and command for power off. Its not working. Can anyone help me with Appium commands for power on/off. PS - I can not use adb commands
adb shell reboot -p power off device
adb reboot -p restart the device
I'm interested what function you added, because Appium server does not support device power on/off out of box, the only way you can do it is to use adb directly
Has anyone had any luck using USB debugging with an Edison while also using a USB peripheral? It looks like you have to use the switch to activate the bigger USB port, which also cuts off the debugging port. I'm trying to use a USB camera, but can't see the debugger info to actually figure out what's not correct. I also get a connection refused when attempting to use adb connect on the wifi ip.
It looks like you have to use the switch to activate the bigger USB port, which also cuts off the debugging port.
Correct, only one port can be active at a time between the USB Host and USB OTG on the Edison. If you just need access to logs for debugging, connect another USB cable for the serial debug console as described on the Android Things Edison page. This will give you shell access and you can run logcat.
I'm trying to use a USB camera, but can't see the debugger info to actually figure out what's not correct.
It's worth noting that USB cameras are not supported in the current preview release. It's unlikely that the device will be recognized as a camera through the APIs, though you may still be able to access it as a raw USB device if you wish.
I also get a connection refused when attempting to use adb connect on the wifi ip.
The Edison defaults to USB mode for ADB, but you should be able to set it to TCP mode to connect over the network (much like an Android phone):
$ adb tcpip 5555
$ adb connect <ip address>:5555
…or the following, which should persist the configuration across a reboot:
$ adb root
$ adb shell setprop persist.adb.tcp.port 5555
$ adb reboot
$ adb wait-for-device
$ adb connect <ip address>:5555
I get this error message when i try to upload code to my arduino. Does anyone know what is going on?
I have installed the proper drivers and it works fine. My port appears on the menu and it is the corresponent to the device.
bless
Common error, here is the solution:
1 - Unplug the Arduino
2 - Upload code with no Arduino connected to PC
3 - Reconnect Arduino
4 - Upload code to the Arduino
Good luck!
From terminal:
ls -l /dev/ttyUSB*
# or:
ls -l /dev/ttyACM*
Get the groupname from the result:
crw-rw---- 1 root uucp 188, 0 5 apr 23.01 ttyUSB0
# or:
crw-rw---- 1 root dialout 188, 0 5 apr 23.01 ttyACM0
Add your username to the group:
usermod -a -G uucp username
# or:
usermod -a -G dialout username
Log out and in again for this change to take effect.
Source: https://playground.arduino.cc/Linux/All/#Permission
If you are on Linux,
just set current user to belong to "dialout" group which is the one who members are allowed to access ports.
Run following:
sudo adduser yourUserName dialout
then relog to take effect
(Ubuntu 18.04)
If your using the arduino IDE 2.0 you must close the serial monitor tab if it’s open to upload a sketch. Otherwise you will get this error.
USB may need CH340 driver.
Some Arduinos use the CH340 controller
Find and install the CH34X_Driver_V3.4_Windows.zip
click right on this computer, go to management, device manager, com, find the port of Arduino, then go to tools and in port select the com
I had the COM3 error too and this fixed it.
Open the Arduino application as Administrator
(Shift+Rightclick the app, 'Run as administrator').
I still had to upload without the Arduino connected, then connect and upload.
I had the same problem:
If you are using VS Code with Platform IO and you spam Serial Monitor with many message too fast, then when trying again to upload it will give you the above error. One way to solve it is to press the reset button on your board and immedietly after that to press upload in VS Code. Just don't spam the Serial Monitor too fast, when using VS Code with Platform IO and uploading while monitoring it.
If you are using CLion with Platform IO and you have opened Serial Monitoring via pio device monitor then you must close it and then upload, because it is using the port.
be sure you are not using 2 ides connected to arduino like ARDUINO IDE and VS Code
If you are using the USB-SERIAL CH340 driver: (on some cheaper ARDUINO clones)
Open Device Manager
Open Ports and click on the drop-down arrow to select your port.
Right-click and select "Properties"
Open the "Port Settings" tab.
Click on "advanced" to open a new window:
Un-tick "Use FIFO buffers (requires 16550 compatible UART)" and press "OK"
See image
Please let others know if this worked for you!
I came into this strange issue:
1) In Ubuntu GUI mode, open gnome terminal, execute "adb devices", attached phone can be listed
2) Switch to console mode (Ctrl+Alt+F1), execute "adb devices", the phone is listed. But after execute "adb root; adb remount", then execute "adb devices", attached phone cannot be listed
3) Switch to GUI mode again(Alt+F7), and execute "adb devices" in gnome-terminal, phone is listed again
So the problem seems to be that if I never list device under GUI mode, then I cannot get the device listed in Console mode. Anybody see this problem before?
By the way, when the adb devices command doesn't listed the phone, lsusb can found the phone, so I guess in usb device aspect, things are good.