LUA Reference Guide
2.8
2.8
  • EdgeTX 2.8 Lua Reference Guide
  • Introduction
    • Acknowledgments
    • Getting Started
  • Part I - Script Type Overview
    • Custom (Mixer) Scripts
    • Telemetry Scripts
    • One-Time Scripts
    • Function Scripts
    • Widget Scripts
  • Part II - EdgeTX Lua API Programming Guide
    • Lua Basics
    • Loading Code Modules Dynamically
    • Saving Memory
    • Using Key and Touch Events
    • Drawing Flags and Colors
    • Data Exchange with the EdgeTX Model Setup
    • Included Lua Libraries
      • io Library
        • io.open()
        • io.close()
        • io.read()
        • io.write()
        • io.seek()
  • Part III - EdgeTX Lua API Reference
    • Constants
      • Key Event Constants
      • Touch Event Constants
      • Flags and Pattern Constants
      • Color Constants
      • Special Character Constants
      • Screen Constants
      • Logical Switch Function Constants
      • Special Function Constants
    • General Functions
      • GREY()
      • accessTelemetryPush()
      • chdir(directory)
      • crossfireTelemetryPop()
      • crossfireTelemetryPush()
      • defaultChannel(stick)
      • defaultStick(channel)
      • flushAudio()
      • getAvailableMemory()
      • getDateTime()
      • getFieldInfo(source)
      • getFlightMode(mode)
      • getGeneralSettings()
      • getGlobalTimer()
      • getLogicalSwitchValue(id)
      • getOutputValue(outputIndex)
      • getRAS()
      • getRSSI()
      • getRotEncMode()
      • getRotEncSpeed()
      • getRtcTime()
      • getShmVar(id)
      • getSourceInfo(source)
      • getSourceIndex(sourceName)
      • getSourceName(sourceIndex)
      • getSourceValue(source)
      • getSwitchIndex(positionName)
      • getSwitchName(switchIndex)
      • getSwitchValue(switchIndex)
      • getTime()
      • getTxGPS()
      • getUsage()
      • getValue(source)
      • getVersion()
      • ghostTelemetryPop()
      • ghostTelemetryPush()
      • killEvents(key)
      • loadScript(file [, mode], [,env])
      • multiBuffer(address[,value])
      • playDuration(duration [, hourFormat])
      • playFile(name)
      • playHaptic(duration, pause [, flags])
      • playNumber(value, unit [, attributes])
      • playTone(frequency, duration, pause [, flags [, freqIncr]])
      • popupConfirmation(title, message, event)
      • popupInput(title, event, input, min, max)
      • popupWarning(title, event)
      • resetGlobalTimer([type])
      • serialRead([num])
      • serialWrite(str)
      • setSerialBaudrate(baudrate)
      • setShmVar(id, value)
      • setStickySwitch(id, value)
      • setTelemetryValue(id, subID, instance, value [, unit [, precision [, name]]])
      • sources([first[, last]])
      • switches([first[, last]])
      • sportTelemetryPop()
      • sportTelemetryPush()
    • Model Functions
      • model.defaultInputs()
      • model.deleteFlightModes()
      • model.deleteInput(input, line)
      • model.deleteInputs()
      • model.deleteMix(channel, line)
      • model.deleteMixes()
      • model.getCurve(curve)
      • model.getCustomFunction(function)
      • model.getFlightMode(index)
      • model.getGlobalVariable(index, flight_mode)
      • model.getInfo()
      • model.getInput(input, line)
      • model.getInputsCount(input)
      • model.getLogicalSwitch(switch)
      • model.getMix(channel, line)
      • model.getMixesCount(channel)
      • model.getModule(index)
      • model.getOutput(index)
      • model.getSensor(sensor)
      • model.getSwashRing()
      • model.getTimer(timer)
      • model.insertInput(input, line, value)
      • model.insertMix(channel, line, value)
      • model.resetSensor(sensor)
      • model.resetTimer(timer)
      • model.setCurve(curve, params)
      • model.setCustomFunction(function, value)
      • model.setFlightMode(index, params)
      • model.setGlobalVariable(index, flight_mode, value)
      • model.setInfo(value)
      • model.setLogicalSwitch(switch, value)
      • model.setModule(index, value)
      • model.setOutput(index, value)
      • model.setSwashRing(params)
      • model.setTimer(timer, value)
    • Lcd Functions
      • Lcd Functions Overview
      • lcd.RGB(r, g, b | rgb)
      • lcd.clear([color])
      • lcd.drawAnnulus(x, y, r1, r2, start, end [, flags])
      • lcd.drawArc(x, y, r, start, end [, flags])
      • lcd.drawBitmap(bitmap, x, y [, scale])
      • lcd.drawBitmapPattern(bitmap, x, y [, flags])
      • lcd.drawBitmapPatternPie(bitmap, x, y, startAngle, endAngle [, flags])
      • lcd.drawChannel(x, y, source, flags)
      • lcd.drawCircle(x, y, r [, flags])
      • lcd.drawCombobox(x, y, w, list, idx [, flags])
      • lcd.drawFilledCircle(x, y, r [, flags])
      • lcd.drawFilledRectangle(x, y, w, h [, flags])
      • lcd.drawFilledTriangle(x1, y1, x2, y2, x3, y3 [, flags])
      • lcd.drawGauge(x, y, w, h, fill, maxfill [, flags])
      • lcd.drawHudRectangle(pitch, roll, xmin, xmax, ymin, ymax [, flags])
      • lcd.drawLine(x1, y1, x2, y2, pattern, flags)
      • lcd.drawLineWithClipping(x1, y1, x2, y2, xmin, xmax, ymin, ymax, pattern [, flags])
      • lcd.drawNumber(x, y, value [, flags [, inversColor]])
      • lcd.drawPie(x, y, r, start, end [, flags])
      • lcd.drawPixmap(x, y, name)
      • lcd.drawPoint(x, y)
      • lcd.drawRectangle(x, y, w, h [, flags [, t]])
      • lcd.drawScreenTitle(title, page, pages)
      • lcd.drawSource(x, y, source [, flags])
      • lcd.drawSwitch(x, y, switch, flags)
      • lcd.drawText(x, y, text [, flags [, inversColor]])
      • lcd.drawTextLines(x, y, w, h, text [, flags])
      • lcd.drawTimer(x, y, value [, flags [, inversColor]])
      • lcd.drawTriangle(x1, y1, x2, y2, x3, y3 [, flags])
      • lcd.exitFullScreen()
      • lcd.getColor(flags)
      • lcd.getLastLeftPos()
      • lcd.getLastPos()
      • lcd.getLastRightPos()
      • lcd.invertRect(x, y, w, h [, flags])
      • lcd.refresh()
      • lcd.resetBacklightTimeout()
      • lcd.setColor(colorIndex, color)
      • lcd.sizeText(text [, flags])
    • Bitmap Functions
      • Bitmap.getSize(name)
      • Bitmap.open(name)
      • Bitmap.resize(bitmap, width, height)
      • Bitmap.toMask(bitmap)
    • Filesystem
      • dir(directory)
      • fstat(path)
  • Part IV - Advanced Topics
    • Lua data sharing across scripts
    • Debugging techniques
    • Speed/memory optimizaton tricks
  • Appendix
    • Fonts
    • Units
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EdgeTX 2.8 Lua Reference Guide

NextIntroduction

Last updated 1 year ago

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The latest version of this guide will always be available . At the top of the left sidebar there is a version option if you are running an older version of EdgeTX and need the docs for that specific version.

Please feel free to make suggestions or corrections to the documentation on GitHub, but the preferred method of editing is to use , so all changes will need to be made by someone who is authorized as a writer there.

This guide covers the development of user-written scripts for R/C transmitters running the EdgeTX 2.8 operating system with Lua support. Readers should be familiar with EdgeTX, the EdgeTX Companion, and know how to transfer files the SD card in the transmitter.

If you are new to Lua programming, you may also find the of assistance.

Part I is an overview of the different script types, along with basic examples of each.

Part II is a programming guide that introduces the types of EdgeTX Lua scripts and how to use them.

Part III is the EdgeTX Lua API Reference

Part IV covers advanced topics with examples

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