OMMenuItem Struct (and likely many other classes and structs) contain references to the deprecated prog_char type. See AVR libc documentation.
Other means of placing menu item data in PROGMEM should be implemented (e.g. F()), or alternatively, standard (SRAM) data types should be chosen.
OMMenuItem Struct(and likely many other classes and structs) contain references to the deprecatedprog_chartype. See AVR libc documentation.Other means of placing menu item data in PROGMEM should be implemented (e.g.
F()), or alternatively, standard (SRAM) data types should be chosen.