errorString(); // 根据错误信息进行处理 } 通过以上步骤,你应该能够定位并解决 QIODevice::read (QSerialPort): device not open 错误。如果问题仍然存在,可能需要检查更底层的硬件连接或操作系统权限设置等问题。
for "#if 1", the message is "port open, A, A, done", for "#if 0", the message is "port open, A, B, done"#include <QDebug> #include <QtSerialPort/QtSerialPort>Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget)...
This class overrides QSerialIODevice::run() to run pppd directly on the underlying device name so that it isn't necessary to create a pseudo-tty. This is generally more efficient for running pppd. */QProcess *QSerialPort::run(constQStringList& arguments,booladdPPPdOptions ) {if( addPPPd...
case QSerialPort::NotOpenError: message = tr("Not open error"); break; case QSerialPort::ResourceError: message = tr("Port disconnected"); break; case QSerialPort::UnknownError: message = tr("Unknown error"); break; default: message = QString::number(error); ...
Qt SerialPort libserialport Database PostgreSQL : postgresql-libs libpqxx MariaDB : mariadb-clients mariadb-libs SQLite : sqlite Printer libcups Accessibility at-spi2-core at-spi2-atk SCTP lksctp-tools (To enable this, add the -sctp option when configuring.) Webengine Required : flex bi...
XBee device """ifnotself.xbee:raiseValueError("Either a serial port or an XBee must be provided to __init__ to execute run()")whileTrue: self.dispatch(self.xbee.wait_read_frame())ifoneshot:breakdefdispatch(self, packet):""" dispatch: XBee data dict -> None ...
Async read from SerialPort.BaseStream with timeout Async/Await - How to stop the insanity Asynchronous FTP with the new Async methods Attempted to read or write protected memory attempted to read or write protected memory!! Attempted to read or write protected memory. This is often an indicatio...
with the device? There is a huge number of possible settings and lots of things can go wrong. Obviously, you don't set up the serial port at all after you open the file. If you're very lucky the settings are just what the other side expects, but you really can't rely on that. ...
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