Mbed OS 6 does not support wait and wait_ms functions. This library (orginally written by Simon Ford) was modified to use wait_us instead and comply with Mbed OS 6 version.
Original library: https://os.mbed.com/users/simon/code/TextLCD/
michalmonday/TextLCD
TextLCD by Simon Ford but with wait_us instead of wait (because wait was removed in Mbed OS 6)
C++