redline-electronics/traqpaq — Issue #1: LCD tearing
Author: ryandavid
Created: 2012-01-10 02:47:53+00:00
State: open

Display shows tearing during GUI element updates.

Use following commands to specify update 'window' in order to speed up drawing time:
- LCD_CMD_WINDOW_HORZ_ADDR_START
- LCD_CMD_WINDOW_HORZ_ADDR_END
- LCD_CMD_WINDOW_VERT_ADDR_START
- LCD_CMD_WINDOW_VERT_ADDR_END

Also need to verify SMC frequency does not exceed SPFD5420 max bus frequency specified in datasheet. Investigate timing parameters in Section 27.6 of AT32UC3A0 datasheet in order to divide down HSB/CPU frequency