main: hook up calibration stubs

I guess I will be finishing this later.

src/YaesuController.zig

@@ -17,6 +17,24 @@ pub const AzEl = struct {
     elevation: f64,
 };
 
+pub const CalibrationRoutine = enum {
+    feedback,
+    orientation,
+};
+
+pub fn calibrate(allocator: std.mem.Allocator, routine: CalibrationRoutine) !void {
+    const controller = try YaesuController.init(allocator);
+    defer {
+        controller.quit();
+        controller.control_thread.join();
+    }
+
+    switch (routine) {
+        .feedback => try controller.calibrate_feedback(),
+        .orientation => try controller.calibrate_orientation(),
+    }
+}
+
 pub fn init(allocator: std.mem.Allocator) !YaesuController {
     const lock = try allocator.create(std.Thread.Mutex);
     errdefer allocator.destroy(lock);
@@ -116,6 +134,18 @@ pub fn startPark(self: YaesuController) void {
     self.setTarget(config.controller.parking_posture) catch unreachable;
 }
 
+fn calibrate_feedback(self: YaesuController) !void {
+    _ = self;
+    log.err("this isn't implemented yet, sorry.", .{});
+    return error.NotImplemented;
+}
+
+fn calibrate_orientation(self: YaesuController) !void {
+    _ = self;
+    log.err("this isn't implemented yet, sorry.", .{});
+    return error.NotImplemented;
+}
+
 fn runController(controller: *Controller) void {
     controller.run() catch {
         log.err(

src/main.zig

@@ -4,6 +4,7 @@ const builtin = @import("builtin");
 const Config = @import("./Config.zig");
 const lj = @import("./labjack.zig");
 const RotCtl = @import("./RotCtl.zig");
+const YaesuController = @import("./YaesuController.zig");
 
 const udev = @import("udev_rules");
 
@@ -69,7 +70,26 @@ pub fn main() !u8 {
             log.err("rotator controller ceased unexpectedly! {s}", .{@errorName(err)});
             return 1;
         };
+    } else if (std.mem.eql(u8, args[1], commands.calibrate)) {
+        if (args.len < 3 or args.len > 4) {
+            printHelp(exename, .calibrate);
+            return 1;
+        }
 
+        loadConfigOrDefault(allocator, if (args.len == 4) args[3] else null) catch
+            return 1;
+        defer Config.deinit();
+
+        const routine = std.meta.stringToEnum(YaesuController.CalibrationRoutine, args[2]) orelse {
+            log.err("{s} is not a known calibration routine.", .{args[2]});
+            printHelp(exename, .calibrate);
+            return 1;
+        };
+
+        YaesuController.calibrate(allocator, routine) catch |err| {
+            log.err("Calibration failed: {s}", .{@errorName(err)});
+            return 1;
+        };
     } else if (std.mem.eql(u8, args[1], commands.help)) {
         if (args.len != 3) {
             printHelp(exename, .help);
@@ -271,7 +291,7 @@ const command_help = .{
         \\  Perform a calibration routine and write an updated configuration with its results.
         \\
         \\Arguments:
-        \\  routine      Must be one of `feedback` or `orientation`. The different calibration routines have
+        \\  routine      Must be either `feedback` or `orientation`. The different calibration routines have
         \\               different requirements. `orientation` calibration is a sun-pointing-based routine and
         \\               should be performed after `feedback` calibration is complete.
         \\  config_file  [Optional] the path of a config file to load. This file will be updated with the