Invert y: this is now using standard definition

micropython/modules/pico_scroll/README.md

@@ -88,7 +88,7 @@ picoscroll.set_pixels(image)
 ### show_bitmap_1d
 
 Show a view of a bitmap stored as the 7 least significant bits of
-bytes in a `bytearray`, bottom-up. Individual pixels are set to
+bytes in a `bytearray`, top-down. Individual pixels are set to
 `brightness` based on individual bit values, with the view defined by
 the offset and the width of the scroll (i.e. 17 columns). Changes will
 not be visible until `update()` is called.

micropython/modules/pico_scroll/pico_scroll.cpp

@@ -115,7 +115,7 @@ mp_obj_t picoscroll_show_bitmap_1d(mp_obj_t bitmap_obj, mp_obj_t brightness_obj,
 	        unsigned char col = values[k];
 		for (int y = 0; y < height; y++) {
 		    int val = brightness * ((col >> y) & 1);
-		    scroll->set_pixel(x, height - 1 - y, val);
+		    scroll->set_pixel(x, y, val);
 		}
 	    }
 	}