tian f1c200屏幕RGB显示怎么调成BGR，调了sys_config.fex的fb0_format参数没有没有效果。需要调哪里才能修改
;----------------------------------------------------------------------------------
;disp init configuration
;
;disp_mode (0:screen0<screen0,fb0>)
;screenx_output_type (0:none; 1:lcd; 3:hdmi;)
;screenx_output_mode (used for hdmi output, 0:480i 1:576i 2:480p 3:576p 4:720p50)
; (5:720p60 6:1080i50 7:1080i60 8:1080p24 9:1080p50 10:1080p60)
;fbx format (4:RGB655 5:RGB565 6:RGB556 7:ARGB1555 8:RGBA5551 9:RGB888 10:ARGB8888 12:ARGB4444)
;fbx pixel sequence (0:ARGB 1:BGRA 2:ABGR 3:RGBA)
;fb0_scaler_mode_enable(scaler mode enable, used FE)
;fbx_width,fbx_height (framebuffer horizontal/vertical pixels, fix to output resolution while equal 0)
;lcdx_backlight (lcd init backlight,the range:[0,256],default:197
;lcdx_yy (lcd init screen bright/contrast/saturation/hue, value:0~100, default:50/50/57/50)
;lcd0_contrast (LCD contrast, 0~100)
;lcd0_saturation (LCD saturation, 0~100)
;lcd0_hue (LCD hue, 0~100)
;----------------------------------------------------------------------------------
[disp]
disp_init_enable = 1
disp_mode = 0
screen0_output_type = 1
screen0_output_mode = 4
screen1_output_type = 1
screen1_output_mode = 4
fb0_framebuffer_num = 2
fb0_pixel_sequence = 0
fb0_scaler_mode_enable = 0
fb0_format = 2
fb0_width = 0
fb0_height = 0
fb1_framebuffer_num = 0
fb1_pixel_sequence = 0
fb1_scaler_mode_enable = 0
fb1_format = 2
fb1_width = 0
fb1_height = 0
lcd0_backlight = 50
lcd1_backlight = 50
lcd0_bright = 50
lcd0_contrast = 50
lcd0_saturation = 57
lcd0_hue = 50
lcd1_bright = 50
lcd1_contrast = 50
lcd1_saturation = 57
lcd1_hue = 50
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