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Download Teensyduino, Version 1.45Teensyduino is a software add-on for the Arduino software.
Teensyduino 1.45 supports Arduino versions 1.0.6 and 1.6.5-r5 and 1.8.1 and 1.8.5 and 1.8.6 and 1.8.7 and 1.8.8.
Install Step 1: Download & Extract ArduinoFirst, you must download the Arduino Software. Remember the location where you extracted the files.Install Step 2: (Linux only) Install udev RulesThe udev rule file gives non-root users permission to use the Teensy devices (serial, HID, etc). More Linux tips below.sudo cp 49-teensy.rules /etc/udev/rules.d/ Install Step 2: (Macintosh only) Pass Internet Download QuestionYou must run Arduino at least once before adding Teensyduino, to confirm you wish to run a program downloaded from the Internet.If Teensyduino modifies your copy of Arduino before you confirm, recent versions of OS-X may not allow you to run Arduino, or even tell you Arduino will damange your computer. Simply run Arduino first to clear the question about running a program downloaded from the Internet, before adding Teensyduino! Install Step 2: (Windows Only) Anti-Virus/Malware ExceptionWindows Defender, McAfee and other anti-virus or anti-malware program can interfere with installation. They also can cause horribly slow performance when Arduino compiles code, if "Real Time Scanning" is enabled.Install Step 3: Run Teensyduino InstallerThe Teensyduino installer adds the necessary support files to Arduino. Your copy of Arduino must be one of the supported versions listed on this first screen.
The Next button will only activate when a supported version of the Arduino Software is found.
Teensyduino HistoryVersion 1.45Support for Arduino 1.8.8Updated libraries: i2c_t3, Snooze Teensy 3.6 overclock to 256 MHz (Frank B) - need to uncomment lines in boards.txt Fix serial begin() lockup if framing error received in FIFO when end() called Audio add AudioControlTLV320AIC3206 (Chip Audette) Teensy Loader icon added for Gnome desktop on Linux Fix asm in delayMicroseconds on Teensy LC (Frank B) Audio: Fix ADAT output with 168 MHz (Frank B) Version 1.44Support for Arduino 1.8.7
Add Linux AARCH64 (64 bit ARM, Jetson TX2) support Improve Tools > Ports menu refresh speed Support Tools > Get Board Info teensy_ports now sends JSON on stdout Audio: add wavetable synthesis (thanks PSU Student Team) Version 1.43A detailed explanation of new features was written on the blog.Support for Arduino 1.8.6 Ethernet updated to 2.0.0 Fix default Ethernet CS pins on Teensy 2.0 & Teensy++ 2.0 Fix USB Keyboard '#' for UK & Irish layouts Generic UDP class support beginMulticast Fix USB MIDI hogging transmit buffers Fix FreqCount for use at high frequencies
Installer automated install, use --dir=
Fix for Arduino 1.8.6 startup (Arduino issue #7917)
Fix SerialPlotter for Ports(Teensy)
USBHost_t36 fix for Gigabyte keyboard (thanks KurtE)
OctoWS2811 update movie2serial.pde
Remove BYTE define, previously for pre-1.0 Arduino compatibility
Update WS2812Serial documentation
Improve installer help dialog on Windows (advise "app" incompatible)
Workaround a USB buffering issue
Add Arduino's fix for slow 1.8.6 menus on Mac
Add teensy_ports program and Tools > Ports "Teensy" section
Add teensy_serialmon - used for Serial Monitor when a "Teensy" Port selected
Fix USB Touchscreen
Add USB Touchscreen examples
Fix FlightSimFloat on Teensy 3.5
Fix USB bcdUSB number
Fix KEY_MEDIA_RANDOM_PLAY
Update OneWire, PS2Keyboard, SerialFlash, Time, PS2Keyboard
Unified logging in Teensy Loader's Verbose Info window
Fix teensy_ports crash when/if Teensy Loader closes
major USB device detection code cleanup....
teensy_reboot now uses device location info from Ports menu
teensy_ports quits automatically when Arduino no longer running
Optimize memory usage in Teensy Loader PNG image handling
Fix Teensy Loader Verbose Info menu Log > Clear
Improve elapsed time in teensy_ports, use native monotonic time
Drop support for Arduino 1.8.2 and 1.8.3 and 1.8.4
Fix incorrect serial monitor title bar on Windows
Workaround for 1 second lag when Teensy Loader not running
Fix non-serial reconnect on Windows XP (workaround missing DBT_DEVNODES_CHANGED)
fix teensy_ports and teensy_serialmon on Mac High Sierra
fix serial monitor title bar & online/offline status parsing from teensy_serialmon
fix teensy_serialmon verbose info in serial monitor, now prints to Arduino console
Fix Teensy Loader Help > About stalling verbose info log from other programs
Fix Teensy Loader File error dialog stalling verbose info log from other programs
fix blank lines appears in verbose info log on Windows
teensy_port better handling for large number of devinst on Windows (eg, MIDIx16)
Better messages when retrying serial open on Windows (eg, with USB "Everything")
show teensy_reboot output on Windows as it occurs, fixed wait until teensy_reboot exits
fixed sending reboot request to some com ports
fix teensy_ports incorrect append to devinst list on Windows
fix logging of windows device change events
prevent teensy_serialmon from interfering with HID bootloader access in Teensy Loader
remove #include
precompile Arduino.h, allows some speedup of rebuild all
update core library, Wire, Audio, Bounce to use precompile Arduino.h
Reduce startup delay from 400 ms to 300 ms
fix teensy_serialmon asser of DTR on Windows, fixes (bool)Serial
(bool)Serial to use DTR only, fixes Serail remaining true after serial monitor close
fix truncated usbmodem names in Ports menu on Macintosh
Verbose info log now uses high res time on Windows 8 & 10
Verbose info log users 1ms res time on Windows XP & 7 (was 16 ms & 10 ms)
Fix Verbose info random order for same timestamp events - now always chronological
Add numbering of non-loader verbose logging instances
Trim excessive verbose logging of status communication
Updates to audio library documentation
Add Teensy Loader about dialog icon (was generic info icon)
Teensy 3.5 now supports use of 256K RAM
EthernetClient fix for forced connection close
Small speedup to analogWrite for DAC pins
Fix DMAChannel transferSize() on Teensy LC
Fix FTM_CONF register bitfield defs
Update ADC library (Pedro Villanueva)
Audio: Add freeverb mono & stereo
Audio: Granular pitch shift & freeze effects (Bleep Labs)
Audio: envelope status functions
Audio: Fixes to waveform object
Audio: Add variable triangle waveform
Audio: Add modulated waveform, support for freq & phase modulation
Audio: Add simple amp/switch object
Audio: Add PDM input
PS2Keyboard: add UK & Spanish layouts
TimeAlarms: minor fixes
USBHost_t36: Joystick fixes (KurtE)
Macintosh build now uses 64 bits
Fix Teensy 3.5 stack address (thanks Frank)
Better detection of Teensy model in Ports menu
Audio: fix WM8731 input select
Improve multiple instance check in teensy_ports
Add -L option to teensy_ports (intended for PlatformIO)
Treat "narrowing conversion" as compiler warnings, not errors
Fix product ID for Flightsim+Joystick USB type
Audio: allow WAV files with extra/junk sections before "fmt" info
Ethernet: document Ethernet.init(cspin) in all examples
OctoWS2811: Fix timing problem on Teensy 3.5
USBHost_t36: Fix clobbering of pipe config on endpoint size change
USBHost_t36: Improve enumeration of Multi-TT hubs
Handle attempt to reopen serial port, clicking button while Arduino compiles
Windows: teensy_serialmon detect orphaned from Arduino IDE condition
Avoid unnecessary delays when upload can't find any board
Print more informative messages about selecting board in Tools > Ports
Added ARM 64 bit experimental installer
Ethernet fix socket receive state caching bug
Ethernet improve handling of unexpected remote server disconnect
SD fix timeouts
SPI pin changes kept in sync with AVR SPI emulation
SPI avoid interfere with pin 45
Wire force recovery from stuck slave devices
Wire improve detection of arbitration loss to other bus masters
Add AudioConnection disconnect() (thanks b0rg3rt)
Update platform.txt for compatibility with Arduino 1.9 beta
Fix serial stall if higher than maximum baud rate configured
Improve delayMicroseconds on Teensy 2.0 (Graham)
Fix SERIAL_8N2 mode on Teensy LC
Update sample Makefile
Add abort() function, needed for Pozyx library
Update keywords for Serial formats & USB Keyboard special keys
Improve AVR SPI register emulation, speed bits
Fix tone() issue when 0 Hz requested, minimum is 1 Hz
Fix Teensy LC DMAChannel bug (thanks kbob)
Audio add ADAT output (thanks Ernstjan Freriks)
Audio fix RMS analysis when no data
Audio ToneSweep improvements (thanks Pio)
Audio design tool custom name bug fixed (thanks neurofun)
Audio modulated sine amplitude when no mod signal fix (thanks neurofun)
Audio library documentation updated, several minor errors fixed
FastLED updated to support WS2812Serial
Time library minor updates & fixes
i2c_t3 library updated
OctoWS2811 fix on Teensy 3.5
OctoWS2811 remove unnecessary delay
OctoWS2811 improve setPixel speed (thanks sgorsh)
USBHost_t36 support for CDC-ACM, PL2303 & CH341 serial (thanks KurtE)
USBHost_t36 support for RawHID (thanks KurtE)
USBHost_t36 support for Xbox One controller (thanks KurtE)
USBHost_t36 improve keyboard & joystick support (thanks KurtE)
USBHost_t36 fix USB MIDI fast data input
USBHost_t36 Ant+ wireless adaptor support (adapted from Michael McElligott)
USBHost_t36 access to device ID and name (thanks KurtE)
XPT2046_Touchscreen detect touch by interrupts (thanks Donziboy2 & Defragster)
Accept String in Stream find() and findUntil()
Update LedDisplay library
USBHost_t36 Fix device status functions usage in polling loops
USBHost_t36 Clean up bandwidth usage info when deleting a pipe
USB MIDI support for virtual cables (select from Tools > USB Type menu)
USB MIDI updated with most functions of Arduino MIDI lib 4.3.1
USB MIDI getType() now returns same as MIDI 4.3.1 -- NOT BACKWARDS COMPATIBLE
Support for compatibility with Arduino's MIDIUSB.h
Added more examples in File > Examples > Teensy > USB_MIDI
USBHost_t36 MIDI support for virtual cables
USBHost_t36 MIDI updated with most functions of Arduino MIDI lib 4.3.1
USBHost_t36 MIDI returns same as MIDI 4.3.1 -- NOT BACKWARDS COMPATIBLE
USBHost_t36 MIDI fix for devices using interrupt endpoints
USBHost_t36 MIDI workaround for devices sending improperly coded sysex message
XPT2046_Touchscreen add setRotation()
FreqMeasureMulti fixed on Teensy LC (thanks Manitou)
USB MIDI & USBHost_t36 MIDI pitch bend using signed integer -- NOT BACKWARDS COMPATIBLE
USB MIDI & USBHost_t36 Fix receiving some MIDI sysex messages
USB MIDI add Interface_3x3 example
USBHost_t36 fix MIDI getType for note off messages
USBHost_t36 add MIDI Interface_16x16 example
Adafruit_SSD1306 uses 400 kHz in I2C mode
USBHost_t36 Joystick improvements, More Axis, Rumble, LEDs (KurtE)
Libs updated: FastLED, Adafruit_NeoPixel, Adafruit_GFX
Libs removed: NewPing
Add USB MIDI Many_Knobs_Buttons example (oddson)
USBHost_t36: HID parsing, improved Mouse driver, new Joystick driver, hub driver fixes, idVendor() & idProduct() functions, keyboard improvements (Kurt)
Audio: fix stereo DAC right channel bug, fix DAC clipping overflow issue, fix FFT256 with LTO optimize (Frank)
Updated: Snooze, FastCRC, i2c_t3, TinyGPS, TeensyThreads
Fix systick hang when yield() overridden
Show warning for certain counterfeit boards, but still allow upload
Linux Teensy Loader now uses udev to find USB devices
Fix delay when uploading on Linux
Fix missing upload error messages in newer Arduino
Fix race condition causing "Teensy Loader is unable to read your compiled sketch (r)"
Use gnu++11 on Teensy 2.0 (was c++11)
Stream find functions now take const pointers on Teensy 2.0
Update Print class for Teensy 2.0
Don't redefined BYTE (for ancient Arduino compatibility) if already defined
Add pgmspace.h (no avr prefix) for ESP2866 compatibility
Support AVR pgm_read_ptr() on Teensy LC & 3.x
Fix srandom conflict
Updated libs: Adafruit_NeoPixel, openGLCD, Snooze, TFT_ILI9163C
Fix compiler warnings & improved error messages: EEPROM, Adafruit_CC3000, Adafruit_GFX, Adafruit_ILI9340, Adafruit_ILI9341, Adafruit_RA8875, ADC, FastCRC, FrequencyTimer2, i2c_t3, ILI9341_t3, IRremote, Keypad, ks0108, LowPower, OctoWS2811, OneWire, openGLCD, OSC, PulsePosition, RA8875, SerialFlash, SoftPWM, ssd1351, ST7565, Talkie, Time, TimerOne, TinyGPS, Tlc5940, x10
Raspberry Pi builds with 2017-07-05-jessie (previous builds were on 2014-12-24-wheezy)
Use C++14 on 32 bit Teensy boards
Fix Wire lib with fastest optimize and >120 MHz CPU speed
Wire emulate AVR twi_writeTo - for Adafruit compatibility
Wire1 support pins on Teensy 3.5 & 3.6 SD socket (if not using SD card)
Fix install problem on Arduino 1.0.6
Fix analogReadAveraging with ADC1
Allow more memory for audio library on Teensy 3.5 & 3.6
Fix audio library delay effect on Teensy 3.5 & 3.6
Audio I2S uses 64 bit frame, improve compatibility with I2S mics
Fix OctoWS2811 seldom-used color conversion options
Add pure code choices in Tools > Optimization
USBHost_t36 improved handling of error & pipe stall
fix for disable of SD on Teensy 3.5 & 3.6 (Frank)
SPI.transfer(readbuf, writebuf, size) (KurtE)
Added TeensyThreads library (Fernando Trias)
Fixed Adafruit_CC3000 on Teensy 3.x
Audio envelope graceful handling of noteOn while gain > 0
Improved FreqMeasureMulti countToNanoseconds
[Experimental] EventResponder
[Experimental] MillisTimer
[Experimental] SPI async using DMA & EventResponder (KurtE)
Remove 2.5 second wait in Serial.begin
USBHost_t36 mouser driver (wwatson)
Update Adafruit_CC3000, AccelStepper, Adafruit_GFX, Adafruit_SSD1306, FastLED, IRremote, Keypad, MFRC522, SoftPWM, SPIFlash
Symbol table and disassembly listing are placed in temp build folder
Fix audio memory usage stats when more than 255 blocks allocated
Fix USB audio transmit with null data
Audio library support for external delay with CY15B104 (FrankB)
Drop Arduino 1.6.12 & 1.6.13 support
Fix SD library larger than 64K read/write
SPI lib - unified SPIClass, constexpr
Wire lib - constexpr
Use gnu++11 for 32 bit Teensy
MTP fixes
add MTP Disk to USB Type menu
Print, Stream, Serial, Serial# use constexpr
analogWriteResolution returns prior setting
add missing kinetis.h register defines
availableForWrite & flush in Print class
map() improvements - now works with float & double
fix exp10 and stricmp
Audio: improved envelope, added TDM, Waveshaper, PWM Synth, CS42448, fix I2S slave
FastLED fixes
Update MIDI to latest version
Fix PS2Keyboard
Tlc5940 fixes
XPT2046_Touchscreen interrupt fix on non-Teensy boards
Fix auto-reboot on Windows 10 rev 1703 (Creator's Update)
Fix FastLED with OctoWS2811 on Teensy 3.6
Improve min() max() for C++ compatibility (tni)
Fix analogWrite to DAC with LTO (tni)
Fix DMAChannel repeated transferCount (KurtE)
Fix DMAChannel alignment on Teensy LC (tni)
Fixes to OctoWS2811, solve "first pixel" issue on Teensy 3.2
Fix SPI SCK (pin 13) drive strength (KurtE)
Increase USB Serial.begin() wait for serial monitor
Fix Audio SD WAV play status with LTO optimization
Teensy Loader window movable by clicking in center area
Support "Clear output" button in Arduino 1.8.3 serial monitor
Update ARM toolchain to gcc 5.4
Add more optimization choices (including LTO) to Tools > Optimize
Ethernet socketBeginMulticast (manitou)
Fix IntervalTimer on Teensy 3.5
Wire library supports Wire1, Wire2
Wire library timeouts for error conditions
Libraries updated: AccelStepper, ADC, Audio, FastLED, LedDisplay, RadioHead, ShiftPWM, Snooze, SPI, TouchScreen, Wire
Libraries added: USBHost_t36
Minor improvements to AVR emulation
Hardware serial write() compatibility fix
Fix pin config on Serial6
Add extreme joystick, disabled by default, edit usb_desc.h
Fix String test as boolean
Faster installation, especially on Mac
Optimize SPI.transfer(buffer, length) (KurtE)
Fix USB audio on Macs & improve PassThroughUSB example
Start USB sooner
Add volume() function to AudioInputUSB
Fix rare memcpy issue (Frank B)
Fix 9 bit mode on Serial1 & Serial2 on Teensy LC (gecko)
Fix to dtostrf for small numbers (LAtimes2)
Serial.begin() waits up to 1 second for serial monitor open
analogWriteFrequency minimum on Teensy LC
Fixes in ADC library (KurtE)
Fixes in RadioHead library (KurtE)
Improve buildin SD card startup on Teensy 3.5 & 3.6 after uploading
Fix SD card clock speed on Teensy 3.5 & 3.6
Fixes to Serial5 and Serial6 on Teensy 3.5 & 3.6
Fix string length check on readString() and readStringUntil()
Libraries update: Audio, FlexCAN, OctoWS2811,
Fix compiler warnings in USB Disk with Teensy 2.0
Add Tools > Optimize menu, add "Faster" (-O2)
Fix driver install/update on Windows 7 & 8
Prevent "might not have installed correctly" message on Windows
Fix Teensy Loader "Illegal Instruction" on Windows 10 restart
Anti-alias font fix for Arduino 1.8.0 on Windows
Fixes for compiler warnings
Libraries updated: Adafruit_RA8875, Adafruit_ST7735, Adafruit_STMPE610, Artnet, Bounce2, FastCRC, FlexCAN, NewPing, OSC, ShiftPWM, UTFT
Teensy Loader Verbose Info now logs time with milliseconds
More logging in (tempdir)/teensy_reboot_log.txt
Teensy Loader GUI toolkit updated (now using wxWidgets 3.1.0)
Mac version now requires OSX 10.7 (Lion) or later
Libraries updated: Audio, Tlc5940, SPIFlash
Serial monitor shows status in title bar, Arduino 1.6.13 only
Ethernet library now supports W5500 chip
Fix SD library with old SD cards on Teensy 3.5 & 3.6
Fix IntervalTimer start/stop bug
Fix Audio library SPI hogging with Teensy 3.5/3.6 build in SD card (Frank B)
Libraries updated: Snooze, Time, TimerThree, Audio, UTFT
Libraries added: EasyTransfer, ResponsiveAnalogRead
Improved sync between Arduino IDE and Teensy Loader
Arduino IDE Tools > Ports menu labels ports as "Teensy"
Fix Arduino Verify starting upload when Teensy already in bootloader mode
Teensy Loader wrong chip dialog is now nonblocking.
pinMode supports INPUT_DISABLE on 32 bit Teensy boards
attachInterrupt supports uninitialized pins
Serial RTS watermarks scale with buffer size (Frank B)
Optimized Adafruit_ST7735 improved & renamed to ST7735_t3
Ethernet library optimizations & Ethernet.init(CS_PIN)
Improve audio library usage with smaller block sizes
Arduino SD library support 4 bit SDIO on Teensy 3.5 & 3.6 (special thanks WMXZ)
Fix EEPROM on Teensy 3.6 with CPU speed > 120 MHz (special thanks Defragster)
Update FlexCAN library for CAN1 on Teensy 3.6 (Pawelsky)
Update OctoWS2811 to support Teensy 3.5 & 3.6
Fix USB serial number on Teensy 3.6 with CPU speed > 120 MHz
Fix audio I2S output on Teensy 3.6 with CPU speed > 120 MHz when also using I2S input
Support Teensy 3.5 & 3.6 on older versons of Arduino
Fix SPI1 default SCK1 pin (KurtE)
Optimize attachInterrupt (tni)
Improve USB stability on Teensy 3.6 with CPU 180 or 216 MHz
Add USB MIDI custom name example
Fix Adafruit_ST7735 on Teensy 3.5 & 3.6 (MichaelMeissner)
Many library metadata files updated for PlatformIO
Fix Ethernet library socket receive bug (thanks ElOtroMateo)
Fix compiler warnings, eg: kinetis_hsrun_enable unused
Serial buffer sizes override from command line (Frank B)
Stream find functions use const for pointers
Add AudioOutputAnalogStereo and AudioInputAnalogStereo
Add Audio reverb effect (Joao Rossi Filho)
Add Audio waterfall spectrum example (Nathaniel Quillin)
Fix USB Audio on Windows when used with USB Serial
Fix auto-reboot for newer USB types
Fix serial monitor for newer non-serial USB types
Many ILI9341_t3 improvements (Frank B, Kurt E, Softegg)
SerialFlash allows other SPI ports (Martino Facchin)
Teensy Loader shows correct images for Teensy 3.5 & 3.6
Improved handling of float INF & NAN (Frank B)
Bundle libpng12 & libusb10 libraries, missing from some Linux distros.
Add support for Teensy 3.5 and 3.6 (still beta)
Improve USB audio - optional Mac workaround
Libraries updated: Audio, OctoWS2811, ADC, i2c_t3, IRremote, SPI, FastLED
Optimize analogRead
Add support for running on Raspberry Pi (Linux ARM)
Drop support for Arduino 1.6.3 and 1.6.6
USB Keyboard improved media keys, now Windows compatible
Add USB Touchscreen (up to 10 fingers)
Add USB Audio
USB Mouse adds horizontal scroll
More combinations in Tools > USB Type
Serial1.setTX() adds open drain option
Libraries updated: Audio, FastCRC, FreqMeasureMulti, PS2Keyboard, SerialFlash, FreqCount, LedDisplay, SerialFlash, Talkie, TFT_ILI9163C, FastLED, ADC, TimeAlarms, TimerOne, TimerThree
SPI setMOSI, setMISO, setCLK work after SPI.begin
Serial1 setTX, setRX support pins 24 & 25 on Teensy LC
Port Serial1.clear to Teensy3 (thanks KurtE)
Port digitalWriteFast & digitalReadFast to Teensy2 (thanks KurtE)
Port Arduino's AVR Serial1 optimization to Teensy2 (thanks KurtE)
Add missing hardware register defs (thanks Duff)
Fix undocumented flightsim callback (thanks jbliesener)
Fix Servo library compile issue on Arduino 1.6.9
Fix WCharacter and ctype functions
Allow SPI setMOSI, setMISO, setCLK after SPI.begin()
Document flash security lock in mk20dx128.c
Support more F_BUS overclock speeds
Fix pulseIn on Teensy LC (thanks KurtE)
Ethernet library rewrite & performance improvement
Serial1, Serial2, Serial3 setTX(pin) setRX(pin)
Wire setSDA(pin) & setSCL(pin) & end()
pinMode INPUT_PULLDOWN, OUTPUT_OPENDRAIN (thanks Xenoamor)
USB Mouse supports MOUSE_BACK & MOUSE_FORWARD buttons (thanks Xenoamor)
SPI.usingInterrupt supports IntervalTimer
Add libraries: MFRC522, Bounce2, RA8875
Update LiquidCrystal, Adafruit_GFX, Adafruit_NeoPixel, AltSoftSerial, Audio, CapacitiveSensor, DS1307RTC, Encoder, i2c_t3, ILI9341_t3, OctoWS2811, OneWire, SerialFlash, ShiftPWM, Snooze, TFT_ILI9163C, Time, TimerOne, TimerThree, Adafruit_SSD1306, ADC, OctoWS2811
Added CMP register defs (thanks Duff)
Convert all built-in library from "legacy" format
Fix serial monitor transmit in non-Serial modes
Fix small error in IntervalTimer floating point init
Fix momentary wrong board display in Teensy Loader during "Reboot OK"
Fix back button in installer when an error is detected (easier to retry)
Remove ARDUINO_ARCH_AVR from non-AVR Teensy boards
Add IPAddress fromString()
Fix E2END to always represent actual EEPROM size
Fix SPI.end() to disable alternate pins, if used
Installer name changed from "teensyduino" to "TeensyduinoInstall" (runs as admin on Windows)
Updates to Ethernet, Wire and XPT2046_Touchscreen libraries.
Add Note Frequency detection to Audio (thanks Colin Duffy)
Fix attachRTS on Serial2 & Serial3 on Teensy 3.x
Add RA8875 library, optimized for Teensy 3.x (thanks Sumotoy)
Other minor fixes and improvements
Fix USB Serial on Macintosh 10.11 El Capitan
Partially fix Mac signatures (still must run Arduino once before installing)
AnalogWriteFrequency supports extremely low speeds (thanks Theremingenieur)
Improve tone() changing frequency while running
Serial1.attachRts() and Serial1.attachCts()
Update libraries: AltSoftSerial, FastLED, ILI9341_t3
Add XPT2046_Touchscreen library
Improve Ethernet library W5200 reset handling
Update SD library examples
Add I2S 2-port register bitfield names
Initial work on MTP Disk (incomplete)
Detect Windows 10 serial driver during install, avoid adding Teensy's INF.
Drop support for Arduino 1.6.4, due to this bug
Update Adafruit_GFX, FastLED, ILI9341_t3 (added fonts)
Audio lib: play from SerialFlash (thanks Wyatt Olson), ext mem delay, bitchusher (thanks Pensive)
Floating point constants are now single precision on Teensy LC, 3.0, 3.1
SD root dir bug and other minor fixes
SD Teensy3 optimized (not enabled by default) has improved caching
Servo library easier to edit for more than 16 motors
Remove dedicated AVR toolchain (was only needed for Arduino 1.6.2)
Avoid interfering with new Arduino 1.6.5 color scheme
Serial flow control functions (C only for now)
XPlaneRefs with names >58 chars (thanks jbliesener)
USB MIDI Time code (thanks Karg)
Installer detects Windows 10, skips driver install
Installer looks in more places on Windows to auto-find Arduino
Optimize Serial.print() and micros() on Teensy-LC
Update Snooze, ADC and i2c_t3 libraries
Several very minor bug fixes
Improve Wire library, handle Lidar Lite issues
Add SerialFlash library
Optimize SD library for Teensy 3.x (SD_t3.h, disabled by default)
Default Systick interrupt to priority level 32
Fix 24 MHz speed on Teensy 3.1
Fix RawHID on Teensy 2.0 with newer Arduino version
Update Time library
Update i2c_t3 library, adds support for Teensy-LC
Update OSC library
analogWriteFrequency() now allow precise sub-1 Hz input
Fix SPI FIFO bug in ILI9341_t3
Fix delay() and micros() bug at startup on Teensy-LC
Update EEPROM and OneWire libraries
Add ADC and i2c_t3 libraries
Fix USB flightsim on Teensy-LC
Fix SPI.transfer16 & support SPI1 on Teensy-LC
Fix String(unsigned char) on Teensy 2.0
Add Serial.availableForWrite() on Teensy 2.0
Fix printing of long integers on Teensy 2.0
Improve USBtoSerial example
Fix harmless but annoying compiler warnings
Support Arduino 1.6.0 and 1.6.1
Keep Arduino Serial Monitor window open during Upload (Arduino 1.0.6, 1.6.0, 1.6.1)
Improve Arduino Serial Monitor efficiency & memory usage (Arduino 1.0.6)
Wire.setClock()
Tools > CPU Speed menu supports speed vs size optimized (Teensy 3.1 & LC)
Update sample Makefile for non-Arduino usage
Simplify usb_desc.h for creating custom USB devices
Libraries added: Adafruit_VS1053, FastCRC, openGLCD, Snooze, TFT_ILI9163C
Libraries updated: Adafruit_CC3000, Adafruit_NeoPixel, Adafruit_SSD1306, Adafruit_ST7735,
FastLED, FreqCount, FreqMeasure, ILI9341_t3, IRremote, MsTimer2, OctoWS2811, OneWire,
PS2Keyboard, PulsePosition, Time, TimerOne, TimerThree, TinyGPS
Upgrade ARM Toolchain from 4.7.2 to 4.8.4.
Various minor bug fixes
Add libraries: Audio, FlexCAN, Adafruit_CC3000, SPIFlash, RadioHead, FastLED, Adafruit_ILI9341, ILI9431_t3, Artnet
Update libraries: Adafruit_NeoPixel, OctoWS2811, Time, Adafruit_SSD1306, Adafruit_ST7735, ShiftPWM
Libraries ported to Teensy 3.x: AltSoftSerial, CapacitiveSensor, FlexiTimer2, FreqCount, FreqMeasure, FrequencyTimer2, MsTimer2, ShiftPWM, TimerOne, TimerThree, Tlc5940
Libraries ported to use SPI transactions: SD, Ethernet, Adafruit_CC3000, Adafruit_ILI9341, Adafruit_STMPE610, RadioHead
Add SPI Transactions
Add DMAChannel & DMASetting objects
Add serialEvent (usb serial) & serialEvent# (hardware serial)
Add Serial.availableForWrite() & Serial#.availableForWrite()
Use Serial2 FIFO on Teensy 3.1
Add transmitterEnable() on Serial2 & Serial3
Fix analogWriteFrequency on Teensy 3.1 pins 25 & 32
Add Installer Directory Help Button
Fix strncpy_P on Teensy 3.x
Add Czech keyboard layout to menu
Add yield() function on Teensy 2.0
Add IntervalTimer priority()
Don't mix CPU speed setting switching from Teensy 2.0 to 3.x
Add FASTRUN, for functions in RAM on Teensy 3.x
Interrupt vector table moved to RAM for Teensy 3.x
Add attachInterruptVector()
Optimize Teensy 3.x hardware register definitions
Serial port names added to pins_arduino.h
Fix ARM toolchain linker & zlib issue (thanks to Andrew Kroll)
Add AVR emulation for util/parity.h
Fix relative positioning on Teensy 3.x USB mouse (now has hybrid relative+absolute)
Add more AVR emulation on Teensy 3.x: wdt.h, crc16.h, sleep.h, EMISK
Fix USB Serial break on Teensy3 (needed by some Labview applications)
Fix USB endpoint read with no data (thanks nox771)
Add USB MIDI SysEx callback (thanks pcbeard)
Workaround for auto-reboot problems on Teensy 2.0 when using watchdog
Fix initialization of local static vars from non-const data on Teensy 3.x
Make all Teensy 3.1 HardwareSerial functions virtual (fixes issue with pointers to objects)
Add extra zero to USB serial number, works around a Macintosh CDC driver bug
Add Kinetis register definitions: DMA bits, VREF bit, ADC PGA, DMA priority registers
Fix IRQ_PRIORITY hard-coding in Serial3
Fix lockup in AVR emulation of SPI.setDataMode(SPI_MODE0)
Fix lockup in AVR emulation of TWBR when running at 24 MHz
Fix rare lockup in repeated Wire.begin() on Teensy 3.1
Update DS1307 library with workaround Arduino Due names.
Update Entropy library, now fully compatible with Teensy 3.x.
Add Teensy 3.1 slow clock options, 2, 4, 8 & 16 MHz... thanks for all the help Duff
Add overclocking code (not enabled by default) for Teensy 3.x at 120, 144 & 168 MHz
Minor Makefile improvement (Matthias Lohr)
Aesthetic source code cleanup
Drop Teensy 1.0 support
Fix OctoWS2811 on Teensy 3.1
Keep unused native SPI chip selects high (disabled), Teensy 3.0 & 3.1
Speed up SD library
Fix upload > 128k on Teensy 3.1
Update Windows driver, fix Serial+Keyboard on Windows 8
Fix __cxa_guard errors on Teensy 2.0
Add missing DMA & PGA & other register definitions for Teensy 3.1
Add Serial1.transmitterEnable(pin) for RS-485 applications
Fix startup issue impacting Neopixel library on Teensy 3.1
Fix analogRead(39) (1.2V ref) on Teensy 3.1
Improve Teensy3 early startup hook, thanks to Anbroz Bizjak
Fix Arduino IDE library conflicts, Adafruit_GFX vs Robot libs
Mouse wheel support for scrolling long menus in Arduino IDE on Windows & Linux
Teensyduino version can be seen in Arduino's Help > About screen
Ethernet library support for W5200 chip
Print speedup for Teensy2
analogRead is now thread safe on Teensy3
Keep USB & serial working in Teensy3 fault condition
Support interrupt priority levels on Teensy3
Serial1 on Teensy3 to transmit even if interrupt blocked
Fix Teensy3 USB buffer memory leak with re-enumeration
USB Mouse on Teensy3 now uses absolute cursor positioning,
Mouse.moveTo(x, y) and Mouse.screenSize(width, height)
USB Keyboard on Teensy3 supports media keys (Mac & Linux only)
Add missing AVR string _P functions on Teensy3
Add missing AVR eeprom functions on Teensy3
Improve Serial1, Serial2, Serial3 buffer size configuration on Teensy3
Fix to Teensy3 Makefile
USB MIDI example improved
Stream printf, eg: Serial.printf()
Add missing new/delete
Add digitalPinToInterrupt
Added SPIFIFO for Teensy3
Ethernet library speedup (using SPIFIFO)
Hardware serial support for other data formats, 7E1, 8N2, etc
9 bit serial format (not enabled by default)
Czech keyboard layout (not enabled by default)
Fix Keyboard.releaseAll() on Teensy3
Fix USB MIDI setHandlePitchChange on Teensy2
Fix arm math lib warnings
Fix digital signatures for Windows exe files
Removed ancient Arduino 0023 support
Windows USB Serial driver signature (should now install on Windows 8 without reboot)
Windows Installer signature
Windows Installer tries to find Arduino and automatically select its location
Reduce Teensy 3.0 power consumption while not uploading.
Improve Teensy 3.0 upload on Macintosh.
Avoid erasing EEPROM during Teensy 3.0 upload.
Fixed USB MIDI sendProgramChange on Teensy 3.0.
Add ARM math library for Teensy 3.0.
Teensy Loader now recognizes ARM elf format, will not accidentally program Teensy 3.0 code to a pre-3.0 board.
Teensy Loader version number is now in sync with Teensyduino version.
Fix stall when connected to a Raspberry Pi that reboots
Add float number support to String
Add String remove()
String now formats unsigned char as a number, same as Print.
Add AVR pin number constants
Added open source license to Teensy3 core library files
Updated Firmata library
Fix USB product name customization header
Reduce USB memory usage
Emulate AVR's TWBR register on Teensy 3.0
Fix single-quote key for USB Keyboard on German and French Canadian layouts
Added DS1307RTC and TimeAlarms libraries (companions to Time library).
Linux select-paste supported (Arduino 1.0.4 and later, Linux only)
Added "Copy To Clipboard" button for compile errors (Arduino 1.0.4 and later)
Turkish keyboard layout special keys supported for USB keyboard.
Fixed Ethernet DNS client bug on Teensy 3.0.
KEY_MENU name added for the menu key.
Memory tuning parameters (heap_start, heap_end, malloc_margin) supported on Teensy 2.0.
Fix compile error on Teensy 2.0 with ps2dev library.
Fix F() macro "const" when used with newer versions of avr-gcc.
Added DDR registers and pullup resistors to AVR port register emulation on Teensy 3.0.
Optimized Serial1.write(buffer, length) on Teensy 3.0.
Added IntervalTimer to Teensy 3.0 - Thanks to Daniel Gilbert
Added compiler defines to example makefile, for compatibility with Arduino libraries
Added cxa_guard_acquire / cxa_guard_release needed for some Ethernet library applications
Fixed brief glitch at the beginning of analogWrite()
Round analogWriteFrequency() to the nearest possible frequency
Fix micros() bug on Teensy 3.0 when read while interrupts disabled.
Fix IPaddress Printable usage on Teensy 3.0
Fix Serial1 on Teensy 3.0 when more than 8 bytes written with interrupts disabled.
Optimize Serial1 FIFO handling on Teensy 3.0, for dramatically less CPU time per byte.
Convert tone() on Teensy 3.0 to use IntervalTimer.
Use serial number for all USB types on Teensy 3.0.
Remove MIDI message names which conflict with MIDI 3.2 library.
Allow override of USB manufacturer, product and serial strings on Teensy 3.0. See usb_names.h.
Add makeWord() to Teensy 3.0.
Fix buffer overflow in String + long integer concatenation on Teensy 3.0.
Update AccelStepper library.
Update Encoder library - now supports interrupts on all Teensy 3.0 pins.
Update PS2Keyboard library - French keymap, readUnicode() function, Teensy 3.0 interrupt support.
Update TinyGPS library
Support for Arduino 1.0.5.
Optimize Serial.readBytes(), both Teensy 2.0 and 3.0.
Optimize Serial.available() on Teensy 3.0.
Added IntervalTimer destructor.
Added String c_str() function.
Removed ArdOSC library.
DmxSimple library support for Teensy 2.0 and 3.0 (previously only Teensy++ 2.0 worked)
Fixed FastSPI compile problem on Teensy 2.0 and Teensy++ 2.0.
Update MIDI library to version 3.2.
Fixed error highlighting when using Teensy 3.0.
Improved recompile speed when Arduino is installed in a location with space in the pathname.
Improved automatic initialization of the Teensy 3.0 RTC, when a 32.768 kHz crystal is present.
Fix SD + Ethernet library compatibility on Teensy 3.0.
All 4 IntervalTimer objects usable on Teensy 3.0.
Fix off-by-one bug in delay() on Teensy 3.0.
Enable I/O after wakeup from lowest power stop mode on Teensy 3.0.
Fix analogInputToDigitalPin() on Teensy++ 2.0.
Added OSC (Open Sound Control) library
Updated VirtualWire library to 1.15 and support Teensy 3.0
Updated SoftPWM library to 1.5 and support Teensy 3.0
Updated XBee library to 0.4.
Added partial SoftwareSerial for Teensy 3.0. If the pins match one of the real serial ports, hardware serial is used. This allows use of libraries that are hard-coded for SoftwareSerial. If non-serial pins are specified, only transmit works. Software-based receive is not yet supported (but planned for a future release)
Fix Serial.write(0)
Turkish keyboard layout (Teensy 3.0)
Fix while(!Serial)
Fixes for ST7565 library (Teensy 3.0)
Add OctoWS2811 library
Update libraries: Keypad, Metro, OneWire, Ping, ST7565
Fix French keyboard layout
Fix error message line number bug.
Add Teensy 3.0 files (arm-none-eabi toolchain is not yet in the installer, use
this copy for Teensy 3.0).
Keyboard.press() & Keyboard.release(), for compatibility with Leonardo sketches
Add descriptions for most included libraries.
Fix USB Mouse Buttons example.
Add Flight Sim Controls USB Type
Add function keys F13 to F24 to USB Keyboard
Add Canadian Multilingual keyboard layout
Add libraries AccelStepper, AltSoftSerial, Encoder, FlexiTimer2, LowPower, Ping, ShiftPWM
Minor fixes and changes for compatibility with libraries
Raw HID available() function
Fix Ethernet library UDP support on 0022 & 0023
Windows installer: faster detection of serial driver already installed
German Mac keyboard layout
(experimental) Raw HID USB type
Improve elapsedMillis & elapsedMicros.
Fix small delayMicroseconds at 1 & 2 MHz clock.
Fix slight timekeeping error in millis().
Fix errors with avr-gcc 4.5 on Fedora 15 (thanks to Ward Wouts).
More minor fixes in Print
MIDI improvements, thanks to Sebastian Tomczak & Dave Sorlien
Support CapacitiveSensor library
Fix pulseIn
Fix printing negative floats
Improve Disk claim/release, add pause/resume API
Add compatibility functions for Leonardo Mouse API
Improve serial emulation on Linux
Fix slow memory leak on Linux
Add more keyboard mappings
Add pushbutton examples using Bounce library
Fix slow startup of serial monitor in Mac
Fix compile speedups for Mac and Windows
Fix stall of compile/upload when auto-launching Teensy Loader
Many small fixes
Improved keyword coloring
(not working yet) Disk.claim() to allow using SD library with USB Disk type
Serial using Stream class
MIDI 2.6 library included
Try to avoid stalling millis() with USB Disk and heavy PC access
Several minor bug fixes
Installs Teensy Loader
More Examples, in File > Examples > Teensy
USB MIDI type added
International USB Keyboard layouts
String class bug fixes
Rework boards.txt menu syntax (requested by Arduino devs, issue #257)
Fixed Ethernet with 0021 & 0022
USB Disk type added, supporting both SD Flash and internal flash
Fix Arduino bugs #29, #78, #209, #235
Emulate Arduino reboot behavior with Serial Monitor window is opened
Windows - directory drop-down now says "[all drives]", instead of just blank space
Compatibility with 0019, String class, improved delay(), stream class, shiftIn()
Compatibility with 0018, Tone() and noTone()
USB Serial: ignore break signal (some buggy programs send it, eg winbatch)
Windows - Teensyduino installer now included Serial driver install
USB Type and CPU Speed menus added inside Tools menu
Add A0, A1, A2... for analogRead(A0) - Arduino 0019 compatibility
Add support for Arduino 0018
Fix ethernet library
Add Serial.end() - shuts off and disconnects USB, saves power!
Automatically shut down USB when possible
Serial.begin() attempts to wait until PC/Mac has initialized USB
Add Uart.end()
Remove Teensy_Firmata - StandardFirmata branch now supports Teensy
Optimize most functions
Minor bug fixes
Do not require rxtx lib on linux, which is removed on 64 bit systems
Fix USB Keyboard/Mouse on Teensy 1.0
Support 8, 4, 2, 1 MHz if specified in boards.txt
Use ADC in high speed mode, makes analogRead() twice as fast
Use lower power idle mode inside delay()
Minor bugs fixed
Add support for Teensy 2.0 (ATMEGA32U4 chip)
Add support for 0017.
Add USB serial extensions to Serial
Add support for 0016.
Fix Serial.available()
Fix HardwareSerial()
Check Arduino version, do not install onto wrong version!
Library fixes included, compatible with Sanguino
Add support for 0015.
Update core with improvements and bug fixes from 0012 to 0015.
Many small improvements.....
Pin names are now defined automatically. PIN_B0, PIN_C7, etc.
Add support for 0014 (0013 on linux because 0014 was never released on linux).
Fix pinout
Many bugs fixed
All: Serial + Keyboard + Mouse + Joystick
requires Mac OS X Lion, or Windows XP SP3, Vista SP1, or Windows 7,
or Linux 2.6.18 or later.
Mac Snow Leopard and Windows XP SP2 do not support Serial when
combined with other types.
Windows & Linux: When using the Serial Monitor with
the USB Keyboard/Mouse option, sometimes a "teensy gateway
communication error" can occur. Close and reopen the serial
monitor to regain communication.
Windows: You may need to run the Teensyduino installer as
administrator for it to install all files. Some anti-virus
programs can also interfere with installation and must be
temporarily disabled. A
Norton AntiVirus Workaround
was sent by Carl B.
All: The Upload button can only work if your Teensy is running
a previously loaded sketch. If your board can not be rebooted
automatically, a message will ask you to press the reset button.
Mac OS X: When you run Arduino after installing Teensyduino, the
Leopard's firewall will recognize the program has changed and will
ask again if you wish to allow internet connection (Arduino checks
for updates). Teensyduino does not "phone home", but Arduino does!
TODO: is this still an issue with recent versions of Arduino??
Linux: By default, the TeensyduinoInstall.linux32
and TeensyduinoInstall.linux64 files will not have execute permission enabled
when saved by most web browsers. Use a file manager or type
"chmod 755 TeensyduinoInstall.linux32" in a terminal to make the file executable.
Then you can run it. In a terminal, type "./TeensyduinoInstall.linux32". Replace
"32" with "64" if using the 64 bit version, or "arm" if using the ARM (Raspberry Pi)
version.
Linux: Teensyduino only works with Arduino from www.arduino.cc.
The modified version provided by Ubuntu is not (yet) supported.
Linux (especially Gentoo): Arduino uses the AVR toolchain
provided by your system. As of December 2011, Gentoo's avr-gcc is horribly
broken. Some newer Fedora (avr-gcc 4.6.x) also have trouble. Faulty
AVR toolchains are a persistent problem on Linux.
Please report bugs to paul@pjrc.com
Numerous files covered by various open source licenses are installed
by Teensyduino. Nearly all are provided in source code form. Please
refer to the comments within each file for copyright and licensing
information.
Files installed in compiled binary format that are based on code licensed
under the GNU General Public License have their corresponding source code
installed in a "src" directory. On Macintosh, use control-click on Arduino
and select "Show Package Contents" from the menu.
The ARM toolchain source code (with PJRC's patches) is
available on GitHub.
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