gpio: implement pwm functions

flake.lock

@@ -37,24 +37,6 @@
         "type": "github"
       }
     },
-    "naersk": {
-      "inputs": {
-        "nixpkgs": "nixpkgs_2"
-      },
-      "locked": {
-        "lastModified": 1721727458,
-        "narHash": "sha256-r/xppY958gmZ4oTfLiHN0ZGuQ+RSTijDblVgVLFi1mw=",
-        "owner": "nix-community",
-        "repo": "naersk",
-        "rev": "3fb418eaf352498f6b6c30592e3beb63df42ef11",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "naersk",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1729880355,
@@ -72,19 +54,6 @@
       }
     },
     "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1728888510,
-        "narHash": "sha256-nsNdSldaAyu6PE3YUA+YQLqUDJh+gRbBooMMekZJwvI=",
-        "path": "/nix/store/xnjw9gmfmpppdj6bxpw6cfkspc3h6xwl-source",
-        "rev": "a3c0b3b21515f74fd2665903d4ce6bc4dc81c77c",
-        "type": "path"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "type": "indirect"
-      }
-    },
-    "nixpkgs_3": {
       "locked": {
         "lastModified": 1730137625,
         "narHash": "sha256-9z8oOgFZiaguj+bbi3k4QhAD6JabWrnv7fscC/mt0KE=",
@@ -104,9 +73,7 @@
       "inputs": {
         "fenix": "fenix",
         "flake-utils": "flake-utils",
-        "naersk": "naersk",
-        "nixpkgs": "nixpkgs_3",
-        "wiringop": "wiringop"
+        "nixpkgs": "nixpkgs_2"
       }
     },
     "rust-analyzer-src": {
@@ -140,22 +107,6 @@
         "repo": "default",
         "type": "github"
       }
-    },
-    "wiringop": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1728531008,
-        "narHash": "sha256-jVfNb0YqaYFd2r5zupy8C1Q1jDAfetPRVKbhtyMBLtg=",
-        "owner": "orangepi-xunlong",
-        "repo": "wiringOP",
-        "rev": "d7bb9d97db265476e6afa8186f2406642e6946be",
-        "type": "github"
-      },
-      "original": {
-        "owner": "orangepi-xunlong",
-        "repo": "wiringOP",
-        "type": "github"
-      }
     }
   },
   "root": "root",