RaspberryPi Pico C++ develop

Hello, we need to convert from python to c++ an application. actually script taking an input from a 7pin matrix keypad, some other interrupts and drive some relay out. aldo blink some led. RTC for store clock Sim800C for send some SMS messages Data logging on internal storage with last 100 op store a file with default configuration --------------------------------- short description when up, system verify if a json file is present and if is correct, if not it goes in init state JSON file have 5 fields: "master code"; "rolling code"; "actual code; "phone number";"number of gate" init state: Asking a 6 digit code, do something and write a rolling code on json file if not phone number present, pushing "*" it can be set. if not number of gate set "#" ask for this number there is a "datetime setting button on board". if pushed ask to put datetime in the format you can see in file and store in rtc module every job log in a txt file that can't be more big then #n operation for avoid to become too big MASTER CODE Just delete json file and send board in init state. Operational kind is easy, just an user put a code, if code is ok it going written in the json file leds blink, sms sending, logging etc. or leds advice about the error, sms, logging etc. python code can explain better ;)