It was then that I found the works of Rachit Belwariar, on the page https://www.geeksforgeeks.org/cpp-implementation-minesweeper-game/ and also that of Cagdas Basaraner, at https://codebuild.blogspot.com/2015/ 01 / algorithms-explained-minesweeper-game.html

I decided to adapt the Belwariar code to show the minefield in a matrix of leds, changing the colors of the leds to indicate the number of mines nearby.

I am still going to implement the routine to flag suspected mine sites with a flag.

And create some animations for the end of the game, in the conditions of victory and defeat.

The result is quite fun and guarantees a few hours of leisure.

Ps;.At first I was unable to use the joystick module button, because the maneuver was uncomfortable. But with a few adjustments to the code, I was able to abandon the additional button.