Update src/light.c

Co-Authored-By: TheJakeSchmidt <TheJakeSchmidt@users.noreply.github.com>

src/light.c

@@ -955,7 +955,18 @@ bool light_cmd_mul_brightness(light_context_t *ctx)
         return false;
     }
 
+    uint64_t old_value = value;
     value *= ctx->run_params.float_value;
+    
+    // Check that we actually de/increase value
+    if( value == old_value ) {
+        if( ctx->runs_params.float_value > 1 ) {
+            value++;
+        }
+        if( ctx->runs_params.float_value < 1 && value > 0 ) {
+            value--;
+        }
+    }
 
     uint64_t mincap = _light_get_min_cap(ctx);
     if(mincap > value)