Here is a fifth beta test for Teensyduino 1.54.
Install into a clean copy of Arduino if you previously installed beta3 or beta4.
SdFat-beta was renamed to SdFat. You may end up with conflicting duplicates if
installing over the top of beta3 or beta4.
Edit: Links removed. Please use 1.54-beta9
https://forum.pjrc.com/threads/67252-Teensyduino-1-54-Beta-9
Changes since Teensyduino 1.54-beta4:
File & FS classes improved - many changes!
Add LittleFS library - lots of new stuff here...
FS open() supports FILE_WRITE_BEGIN mode
SdFat-beta renamed to SdFat
Add delayNanoseconds() on Teensy 2.0, LC, 3.x
Print class support for 64 bit integers
DMAChannel attachInterrupt(isr, priority) (WMXZ)
Update NativeEthernet
SD listfiles example improved
Fix Audio PT8211 issue on Teensy 4.x
Improve Audio simultaneous WAV playing
Fix USB issue for MTP to run at 600 MHz
Fix double space on copy from serial monitor on Windows
Configurable MIDIx16 port names (vjmuzik)
Support for no USB (vjmuzik)
Known / Suspected bugs:
Selecting text in serial monitor gives visually wrong results
NativeEthernet WebClient example may hang
Install into a clean copy of Arduino if you previously installed beta3 or beta4.
SdFat-beta was renamed to SdFat. You may end up with conflicting duplicates if
installing over the top of beta3 or beta4.
Edit: Links removed. Please use 1.54-beta9
https://forum.pjrc.com/threads/67252-Teensyduino-1-54-Beta-9
Changes since Teensyduino 1.54-beta4:
File & FS classes improved - many changes!
Add LittleFS library - lots of new stuff here...
FS open() supports FILE_WRITE_BEGIN mode
SdFat-beta renamed to SdFat
Add delayNanoseconds() on Teensy 2.0, LC, 3.x
Print class support for 64 bit integers
DMAChannel attachInterrupt(isr, priority) (WMXZ)
Update NativeEthernet
SD listfiles example improved
Fix Audio PT8211 issue on Teensy 4.x
Improve Audio simultaneous WAV playing
Fix USB issue for MTP to run at 600 MHz
Fix double space on copy from serial monitor on Windows
Configurable MIDIx16 port names (vjmuzik)
Support for no USB (vjmuzik)
Known / Suspected bugs:
Selecting text in serial monitor gives visually wrong results
NativeEthernet WebClient example may hang