usbserial | 绕过usb弹框授权 -
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kandi X-RAY | usbserial Summary
usbserial
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Top functions reviewed by kandi - BETA
- Sets the flow control state
- Check CTS command
- Check DSR command
- Sets the clock value
- Set SPI word
- Opens the interface
- Sets the flow control command
- Set the stop bits
- Sends a control transfer
- Set stop bits
- Sends a CDCL request to the device
- Set the stop bits
- Set the data bits
- Set line parity
- Set the parity of the SerialInterface
- Sets the current parity parity mode
- Sets the parity of the line
- Writes the message to the SerialBuffer
- Sets the data bits
- Lists all available services in the database
- Sets the baud rate
- Read data from the backend
- On transactional
- Sets the parity of the SerialInterface
- Sets the parity parity
- Sets the parity of the serial interface
usbserial Key Features
usbserial Examples and Code Snippets
Community Discussions
Trending Discussions on usbserial
QUESTION
Background:
I have an old Seagate BlackArmor NAS 110 that I'm trying to install Debian on by following the instructions here: https://github.com/hn/seagate-blackarmor-nas.
I have a couple of USB to TTL serial adapters (one FTDI chipset and the other Prolific) that I've tried and have run into the same issue with both. I have made the connection to the serial port on the board of the NAS using a multimeter to make sure I've gotten the pinout correct.
Problem:
I'm not able to stop the autoboot process by pressing keys and any point during the boot process. The device also does not seem to respond to any keystrokes although they are echoed back.
What I've Tried So Far:
- Using USB to TTL serial adapters with two different chipsets
- Using the adapters on two different computers (MacBook Pro and a ThinkPad)
- Using different operating systems (MacOS, Windows 10, Ubuntu 20.04)
- Using different terminal programs (Screen, Minicom, Putty)
- Turned off hardware and software flow control
- Tested output of adapters by shorting RX and TX pins and seeing keystrokes echoed back
- Commands seem to be sent to device as when I type I see my commands echoed back (not sure if this is supposed to happen)
I've been at this for a few days and can't figure it out. I've also recorded my screen while experiencing the issue: https://streamable.com/xl43br. Can anyone see where I'm going wrong?
Terminal output while experiencing the problem:
...ANSWER
Answered 2021-Apr-22 at 15:51So it turns out there is a short somewhere between the RX pin and the +3.3V pin which is not allowing me to send anything to the board. Thank you to those who have commented.
QUESTION
Setup: Macbook Pro 2020 with a Satechi USB dongle, which serves the usb connections to the microcontroller. The USB cable suited for file transferring. I am using an ESP32-wroom-32E, but when that failed I also tried with an ESP32-wroom-32D and an ESP32 (v1). All of them are development boards.
Tried to provision with the following command from https://docs.toit.io/getstarted/provision/:
toit serial provision --baud 460800 -p wifi.ssid=toitwifi -p wifi.password=toitware -m esp32-4mb
This resulted in the following:
...ANSWER
Answered 2021-Apr-09 at 05:43Most often provisioning fails because of drivers that aren't updated.
For macOS these would be (latest version):
- https://www.silabs.com/developers/usb-to-uart-bridge-vcp-drivers
- https://ftdichip.com/drivers/vcp-drivers/
According to your update you already installed those.
Some devices also need lower baud rates. For example the LILYGO TTGO T-Wristband only works with limited bandwidths. Maybe try with a lower value (as low as 9600).
Since the macOS USB hardware is known to be a bit finicky you could also try to put the devkit behind a USB hub (with an external power supply).
Finally, there are some devices that are known to have a bad hardware setup and which are difficult to flash on macOS. Sometimes pulling the GPIO0 to ground (for example with a resistor) can make the flashing work.
Others have reported success with adding a capacitor: https://randomnerdtutorials.com/solved-failed-to-connect-to-esp32-timed-out-waiting-for-packet-header/
Since you only need to provision/flash a device once, the breadboard solution would be enough. Concretely, adding a 10uF electrolytic capacitor between the EN pin and GND could work.
QUESTION
I have this digital dial indicator : Helios-Preisser Digimet 1722-502". It comes with a capacity to output its reading over a USB serial cable. The USB cable is a special 4 pin connector on the end that plugs into the calipers and a normal USB on the other end.
Although the device comes with special software, I am trying to write a basic python library to communicate with it. Below is the snippet of the manuel which explains the data communication protocol
I am using the python Serial library and have managed to get some communication going with it. Here's what I have so far
...ANSWER
Answered 2021-Mar-17 at 16:04pyserial supports (or it should, but at the end of the day that would depend on the driver and not on pyserial itself) a function to change the state of the port's control lines.
You need to do something like this:
QUESTION
Constantly getting a Syntax Error for;
...ANSWER
Answered 2021-Mar-14 at 20:33You are missing a closing parenthesis on the line above the colors = ... line.
QUESTION
I'm making a python GUI program that gets the values from Arduino and visualizes the graph instantly by using the animation. In this code, I tried to create multiple graphs in total 6boxes like this. desired design of graphs
But in this code, only one graph is shown. I've been googled for quite a long time, but there was no kind of examples on google. Can you please advise me on how to create multiple graphs in one window by using matplotlib?
...ANSWER
Answered 2021-Mar-12 at 13:02This tutorial / documentation explains precisely how to create multiple subplots: Creating multiple subplots using plt.subplots
Simple Example:
QUESTION
so AS tells me that "Type com.hoho.android.usbserial.BuildConfig is defined multiple times:
...\usb-serial-for-android\usbSerialForAndroid\build.transforms\53759cf0d63e199b707a7ba0cbe9c081\classes\classes.dex
...\usb-serial-for-android\usbSerialExamples\build\intermediates\external_libs_dex\debug\mergeExtDexDebug\classes.dex
build.gradle:
...ANSWER
Answered 2021-Mar-08 at 21:12So it looks like you are referencing the same library twice, with
QUESTION
I have a sensor device connected to my Ubuntu 20 machine using a serial to usb cable. I understand that to stream data from it I need to run the following commands:
- Enter root with
sudo -I. - Setup a virtual COM port with
stty -F /dev/ttyACM0 9600 cs8 -cstopb -parenb. - Send a command to the device to initiate data streaming with
echo -e "some_string" > /dev/ttyACM0. - Stream data with
cat < /dev/ttyACM0.
However, I cannot be sure that my device is connected as /dev/ttyACM0. How can I set this up? Currently it has the path /dev/bus/usb/001/005, although the last number changes every time the device is plugged in.
In response to the comment below, here is the output I get when I disconnect the device and run dmesg | tail (I've edited some real values):
ANSWER
Answered 2021-Feb-08 at 17:44I managed to get this working. The commands were:
QUESTION
I am working on a project in which I'm using Pymodbus to connect to an industrial fan system. I am able to read some addresses on this fan, but not others. The fan's instruction booklet I am working with puts the addresses into "parameter groups", as follows:
Grouping Description Group 00 Basic parameters Group 01 V/F pattern selections and setup Group 02 Motor parameters Group 03 Multi function digital Inputs/Outputs ... Group 15 PLC monitoring functionFor each grouping (1-15) above, there are then more specific addresses provided in later pages of the manual. For example, for Group 00, above, there are address entries specified as below:
Group-address Description Range 00-00 Control Mode Selection 0: V/F Mode, 1: Vector mode 00-02 Main run command. 0: Keypad, 1:Communication, 2: PLC ... 00-20. Jog deceleration time. ~0.1-3600.0I am able to access and print the above addresses (for the case of the grouping of '00') with the following Python script:
...ANSWER
Answered 2021-Jan-23 at 22:37There might be a scheme like below in the documentation of the device:
Address GGnnH: GG means parameter group, nn means parameter number, for example, the address of Pr 04-01 is 0401H. (The 'H' means that the number, 401 in this example, is hexadecimal. Thus 0401H is register 1025)
QUESTION
I am writing to a USB and need to append with the carriage return character.
Right now I'm doing:
...ANSWER
Answered 2020-Dec-23 at 20:08Did you try use the \r:
QUESTION
I'm having trouble connecting 4 arduinos using serialports and NodeJs. When I connect all the ports only one is actually working and collecting the data message while all the others are ignored.
If I declare the serial ports separately they all work fine so the problem is not the Arduino code.
Here's how i declare all the serialports:
...ANSWER
Answered 2020-Dec-09 at 11:39Well, in the second snipped, you call just serial.on('data', forwardMessage);, and serial just refers to the firt one.
If you want to interact with the other ones, you have to call the same method also on serial1, serial2 and serial3, which you never use, instead.
As a sidenote, it's enugh to use const SerialPort = require('serialport'); just at the beginning (of the first snippet), then you can do
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Install usbserial
You can use usbserial like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the usbserial component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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