Add loader commands

e.g. "nix run .#flash-ulisp" flashes ulisp to the attached Teensy 4.0 board

1 files changed, 11 insertions, 0 deletions

diff --git a/build.nix b/build.nix
index 3770d57..c670866 100644
--- a/build.nix
+++ b/build.nix
@@ -27,4 +27,15 @@
       cp *.hex $out/
     '';
   };
+
+  flash = let
+    loader = name: path: pkgs.writeScript name ''
+      #!/bin/sh
+      ${pkgs.teensy-loader-cli}/bin/teensy-loader-cli --mcu=TEENSY40 -w ${path}
+    '';
+
+  in drv: file: {
+    type = "app";
+    program = ''${loader file "${drv}/${file}.hex"}'';
+  };
 }