按照论坛大神的方法,制作了带LOGO的UBOOT,正常到UBOOT.OK,画面也是OK的,然后进入内核后,屏幕一秒内画面消失.然后闪了下,之后一直黑屏了,进入文件系统也是黑屏,,,但是cat /dev/input/touchscreen0.是有反应的,然后,之前没有logo的 UBOOT启动,进入文件系统后,屏幕是是可以正常点亮的,,,在uboot里打印了下LCD有关寄存器的值(16个LCD_DATA)
reg:44e108a0, value:2f
reg:44e108a4, value:2f
reg:44e108a8, value:2f
reg:44e108ac, value:2f
reg:44e108b0, value:2f
reg:44e108b4, value:2f
reg:44e108b8, value:2f
reg:44e108bc, value:2f
reg:44e108c0, value:2f
reg:44e108c4, value:2f
reg:44e108c8, value:2f
reg:44e108cc, value:2f
reg:44e108d0, value:2f
reg:44e108d4, value:2f
reg:44e108d8, value:2f
reg:44e108dc, value:2f
reg:44e108e8, value:27
reg:44e108e0, value:27
reg:44e108e4, value:27
reg:44e108ec, value:27
reg:44e10964, value:27
----------------
reg:44e108a0, value:28
reg:44e108a4, value:28
reg:44e108a8, value:28
reg:44e108ac, value:28
reg:44e108b0, value:28
reg:44e108b4, value:28
reg:44e108b8, value:28
reg:44e108bc, value:28
reg:44e108c0, value:28
reg:44e108c4, value:28
reg:44e108c8, value:28
reg:44e108cc, value:28
reg:44e108d0, value:28
reg:44e108d4, value:28
reg:44e108d8, value:28
reg:44e108dc, value:28
reg:44e108e8, value:20
reg:44e108e0, value:20
reg:44e108e4, value:20
reg:44e108ec, value:20
reg:44e10964, value:27
LCD_DATA0~15 从0x2f到0x28
LCD_PCLK,LCD_VS,LCD_HS,LCD_DE均从0x27变化成0x20
LCD_PWM0一直为0x27
然后buoot动画起来后,进入uboot,把一开始的值写回去,画面乱了,进入内核和文件系统后还是黑屏,
希望有经验的帮我指点下.谢谢
