teensy-core-4.1

Teensy 4.1 core updated for C++20

Defragster a5cd6fd4fb Add delay_us for safety - since eeprom_init can drop int's move hsrun_off as init is hsrun safe Has to add core_pins.h to get delayMicroseconds() made empty while()'s on HSRUN state change have a measurable 2us wait each iteration added explicit 100us delay leaving HSRUN to allow internal V to satbilize, seems CPU does this already as 10-50 us made no change, and 100 is not measurable on larger writes. since eeprom_initialize() blindly restores interrupts amd can run under HSRUN, moved hsrun_off()		pirms 8 gadiem
teensy	Keycode for Non-US backslash (thanks parsnip42)	pirms 8 gadiem
teensy3	Add delay_us for safety - since eeprom_init can drop int's move hsrun_off as init is hsrun safe	pirms 8 gadiem
usb_disk	Fix compiler warning with Keyboard.set_modifier	pirms 8 gadiem
usb_flightsim	usb_flightsim changes for XPlaneRefs with names >58 chars	pirms 9 gadiem
usb_hid	Fix compiler warning with Keyboard.set_modifier	pirms 8 gadiem
usb_midi	Fix Teensy 2.0 USB MIDI compile error on Arduino 1.6.0	pirms 10 gadiem
usb_rawhid	Fix RawHID on Teensy 2.0	pirms 9 gadiem
usb_serial	Add availableForWrite() on Teensy 2.0	pirms 9 gadiem
usb_serial_hid	Fix compiler warning with Keyboard.set_modifier	pirms 8 gadiem
.gitignore	Add more rules to .gitignore	pirms 10 gadiem
README.md	Update README.md	pirms 9 gadiem
keywords.txt	Add analog pin keywords	pirms 8 gadiem

Teensy 2.0, 3.x, LC core libraries for Arduino.

The latest stable version of Teensy’s core library is always available in the Teensyduino installer, at this page: