ESP IDF

[arkayabt]

esp idf

[a2800276]

If it is well architectured C code with a clearly demarcated bsp/hal layer, you just need to implement the necessary funtionaly in the hal layer. Otherwise you need to go through the existing code, identify PIC dependant bits and change those to their corresponding IDF functions. It will probably be easier to rearchitect first in that case, though

If you are talking about assembly or PIC BASIC code you'll probably need to rewrite.