drivers: st7789: Optimize RLE decoding loop

Migrate the filling of the line buffer into a seperate function.
This does naturally reduce the cost of the loop management but
much more importantly allows us to use viper native code
generator.

1 files changed, 15 insertions, 4 deletions

diff --git a/wasp/boards/simulator/micropython.py b/wasp/boards/simulator/micropython.py
index a5740f1..578a12d 100644
--- a/wasp/boards/simulator/micropython.py
+++ b/wasp/boards/simulator/micropython.py
@@ -1,5 +1,16 @@
-def const(x):
-    return x
+def const(fn):
+    return fn
+
+def native(fn):
+    return fn
+
+def viper(fn):
+    def ptr8(buf):
+        return buf
+
+    # This is a bit of a hack since the scope for ptr8 won't be right
+    # but it does mean no changes to the client
+    fn.__globals__['ptr8'] = ptr8
+
+    return fn
 
-def native(x):
-    return x