thorinkong 发布的最佳帖子

@whycan 找到问题了，是DE的锅

屏幕型号为LQ035NC111，分辨率为320*240，带SPI但是应该无需初始化。按照手册填写好设备树、移植好屏幕后，分别使用echo 8 > /sys/class/disp/disp/attr/colorbar和echo 1 > /sys/class/disp/disp/attr/colorbar命令测试屏幕显示，屏幕如下：

使用DE截图命令：

echo 路径/bmp 文件名 > /sys/class/disp/disp/attr/capture_dump

得到的截图图像如下，说明经过 DE 处理之后图像并不存在问题：

屏幕手册中时序方面的信息如下：

设备树配置：

&lcd0 {
    lcd_used            = <1>;
    lcd_driver_name     = "default_lcd";

    lcd_if              = <0>;
    lcd_hv_if           = <0>;
    lcd_width           = <70>;
    lcd_height          = <52>;
    lcd_x               = <320>;
    lcd_y               = <240>;
    lcd_dclk_freq       = <6>;
    lcd_hbp             = <68>;
    lcd_ht              = <408>;
    lcd_hspw            = <30>;
    lcd_vbp             = <18>;
    lcd_vt              = <262>;
    lcd_vspw            = <3>;
    lcd_backlight       = <255>;
    lcd_pwm_used        = <1>;
    lcd_pwm_ch          = <7>;
    lcd_pwm_freq        = <1000000>;
    lcd_pwm_pol         = <0>;
    lcd_bright_curve_en = <0>;
    lcd_frm             = <1>;
    lcd_io_phase        = <0x0000>;
    lcd_gamma_en        = <0>;
    lcd_cmap_en         = <0>;
    lcd_hv_clk_phase    = <0>;
    lcd_hv_sync_polarity= <0>;
    lcd_rb_swap          = <0>;

    lcd_power           = "vcc-lcd";
    lcd_pin_power       = "vcc-pd";
    lcd_gpio_0      = <&pio PG 13 GPIO_ACTIVE_HIGH>;
    lcd_gpio_1      = <&pio PE 16 GPIO_ACTIVE_HIGH>;
    lcd_gpio_2      = <&pio PE 12 GPIO_ACTIVE_HIGH>;
    lcd_gpio_3      = <&pio PE 15 GPIO_ACTIVE_HIGH>;
    pinctrl-0 = <&rgb18_pins_a>;
    pinctrl-1 = <&rgb18_pins_b>;
};

这个屏幕调试了好几天了，接线也反复排查了好几遍确认没有问题，实在是搞不明白为什么显示异常了，请各位帮忙分析看看到底是哪里出了问题呢？万分感谢！