Returns a pointer to the global category "default" that is used, for example, by qDebug(), qInfo(), qWarning(), qCritical(), or qFatal(). QLoggingCategory *QLoggingCategory:: defaultCategory()
![linux usb logger linux usb logger](https://www.refog.com/uploads/article/hardware-keylogger.jpg)
const char *QLoggingCategory:: categoryName() const QLoggingCategory:: ~QLoggingCategory()ĭestroys a QLoggingCategory object. Note: category must be kept valid during the lifetime of this object. All message types for this category are enabled by default. QLoggingCategory:: QLoggingCategory(const char * category)Ĭonstructs a QLoggingCategory object with the provided category name. If category is 0, the category name is changed to "default". Member Function Documentation QLoggingCategory:: QLoggingCategory(const char * category, QtMsgType enableForLevel)Ĭonstructs a QLoggingCategory object with the provided category name, and enables all messages with types more severe or equal than enableForLevel. The qCDebug(), qCWarning(), and qCCritical() macros prevent arguments from being evaluated if the respective message types are not enabled for the category, so explicit checking is not needed: QLoggingCategory provides isDebugEnabled(), isInfoEnabled(), isWarningEnabled(), isCriticalEnabled(), as well as isEnabled() to check whether messages for the given message type should be logged.
![linux usb logger linux usb logger](https://www.globaltestsupply.com/images/products/cache/lascar/el_usb_2_lcd/main/lascar-el-usb-2-lcd-datalogger.jpg)
QLoggingCategory objects that are implicitly defined by Q_LOGGING_CATEGORY() are created on first use, in a thread-safe manner. Category names with the qt prefix are solely reserved for Qt modules.Avoid the category names: debug, info, warning, and critical.
![linux usb logger linux usb logger](https://www.meilhaus.de/cosmoshop/default/pix/a/n/PicoLog-TC-08.jpg)
#Linux usb logger serial#
Serial Terminal - Use the Yún's 32U4 processor as a serial terminal for the Linux side on the Yún.Q_LOGGING_CATEGORY(driverUsb, "b")Ĭategory names are free text to configure categories using Logging Rules, their names should follow this convention: Yún First Configuration - Easily configure your Yún device using Serial Monitor and USB port. WiFi Status - Prints information about the status of your wifi connection. Time check - Gets the time from Linux via Bridge then parses out hours, minutes and seconds.
#Linux usb logger how to#
Temperature Web Panel - How to serve data from an analog input via the Yún's built-in webserver. Shell Commands - How to run linux shell commands using a Yún. Remote Due Blink - How to upload remotely a sketch on DUE boards. Process - How to run linux processes using an Yún. Mailbox Read Message - How to read the messages queue, called Mailbox, using the Bridge library. Http Client Console - HTTP client that connects, downloads content and shows it using WiFi and Console. Http Client - A basic HTTP client that connects to the internet and downloads content. */ # include void setup ( ) See Alsoīridge Library - Your reference to the Bridge Libraryīridge - Simple REST style calls to access analog and digital pinsĬonsole Ascii Table - A complete ASCII table printed to the ConsoleĬonsole Pixel - Turn an LED on and off through the ConsoleĬonsole Read - Read data coming from bridge using the Console.read() functionįile Write - How to write file into the Yún filesystem.
#Linux usb logger code#
This example code is in the public domain. Sketch are running but be careful not to remove it while You can remove the SD card while the Linux and the This will ensure that the Yún will create a link Prepare your SD card creating an empty folder in the SD root * SD card attached to SD card slot of the YunShield/Yún * analog sensors on analog pins 0, 1 and 2 To an SD card mounted on the YunShield/Yún using the Bridge library. This example shows how to log data from three analog sensors Wait for an active serial connection before starting the remainder of the sketch.
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In setup(), initialize Bridge, Serial communication, and FileSystem (for communicating with the OpenWrt-Yun file system). Include the FileIO header, for communicating with the SD card. For more circuit examples, see the Fritzing project page Code Hardware RequiredĪnalog sensors attached to analog input pins 0, 1, and 2 You can remove the Flash memory while Linux and the sketch are running but be careful not to remove it while data is writing to the card. When OpenWrt-Yun finds this folder on an attached storage device, it creates a link to the memory to the "/mnt/sd" path. Prepare your memory by creating an empty folder in the root directory named "arduino". The memory is not connected to the microcontroller, but the AR9331, which is why Bridge must be used. This example shows how to log data from three analog sensors to an SD card or to a USB Flash memory stick using the Bridge library.