PCB: Add mounting holes

ergogen/config.yaml

@@ -257,4 +257,27 @@ pcbs:
           from: GND
           to: RST
 
-# TODO: Mounting holes?
+      # Mounting holes
+      mounting_hole_top_left:
+        what: mountinghole_m2
+        where:
+          ref: pad_one_five
+          shift: [ -8, 15 ]
+
+      mounting_hole_top_right:
+        what: mountinghole_m2
+        where:
+          ref: pad_three_five
+          shift: [ 8, 15 ]
+
+      mounting_hole_bottom_left:
+        what: mountinghole_m2
+        where:
+          ref: pad_one_one
+          shift: [ -10.25, 0 ]
+
+      mounting_hole_bottom_right:
+        what: mountinghole_m2
+        where:
+          ref: pad_five_one
+          shift: [ 10, -6 ]

ergogen/footprints/mountinghole_m2.js

@@ -0,0 +1,24 @@
+// MountingHole_2.2mm_M2
+// Source: https://kicad.github.io/footprints/MountingHole
+module.exports = {
+    nets: {
+        net: undefined
+    },
+    params: {
+        class: 'HOLE',
+    },
+    body: p => `
+        (module MountingHole_2.2mm_M2 (layer F.Cu) (tedit 56D1B4CB)
+            ${p.at /* parametric position */}
+
+            (fp_text reference "${p.ref}" (at 0 -3.2) (layer F.SilkS) ${p.ref_hide}
+                (effects (font (size 1 1) (thickness 0.15)))
+            )
+
+            (fp_circle (center 0 0) (end 2.2 0) (layer Cmts.User) (width 0.15))
+
+            (fp_circle (center 0 0) (end 2.45 0) (layer F.CrtYd) (width 0.05))
+            (pad 1 np_thru_hole circle (at 0 0) (size 2.2 2.2) (drill 2.2) (layers *.Cu *.Mask))
+        )
+    `
+}