Add: 1251 5x7 font

display/mt-12232a.go

@@ -200,6 +200,8 @@ func (d *displayMt12232a) GetBounds() image.Rectangle {
 }
 
 func (d *displayMt12232a) Flush(img *image.Gray) error {
+	st := time.Now()
+
 	for p := byte(0); p < 4; p++ {
 		d.dev.WriteCode(0, (3-p)|0xB8)
 		d.dev.WriteCode(0, 0x13)
@@ -230,6 +232,7 @@ func (d *displayMt12232a) Flush(img *image.Gray) error {
 			})
 		}
 	}
+	d.logger.Println("Flush time:", time.Since(st))
 	return nil
 }