100ASK_V853-PRO开发板支持七寸RGB屏

100ASK_V853-PRO开发板支持七寸RGB屏

0.前言

​ 在前面我们已经学习了关于100ASK_V853-PRO编译和烧写,接下来就是在Tina SDK下去适配七寸RGB屏,购买链接为:https://item.taobao.com/item.htm?spm=a1z10.5-c-s.w4002-18944745104.11.669f1b7fE1ptyQ&id=611156659477

image-20230411160118610

LCD_调试指南:概述与介绍 - 全志Linux Tina-SDK开发完全手册

Display_开发指南:概述与介绍 - 全志Linux Tina-SDK开发完全手册

​ 如果已经使用我们的增加的补丁文件,默认启动有Tina Linux的logo,同时还支持了lvgl示例和触摸。可在开发板的串口终端上输入lv_examples,可以发现我们提供有5个lvgl示例。输入lv_examples 0,可运行第一个lvgl示例。

root@TinaLinux:/# lv_examples
lv_examples 0, is lv_demo_widgets
lv_examples 1, is lv_demo_music
lv_examples 2, is lv_demo_benchmark
lv_examples 3, is lv_demo_keypad_encoder
lv_examples 4, is lv_demo_stress
root@TinaLinux:/# lv_examples 0
wh=1024x600, vwh=1024x1200, bpp=32, rotated=0
Turn on double buffering.
Turn on 2d hardware acceleration.
Turn on 2d hardware acceleration rotate.

运行完成后可在七寸RGB屏上显示LVGL V8的示例界面,同时支持触摸控制示例。

1.适配七寸RGB屏的流程

​ 由于Tina SDK中默认已经支持RGB屏驱动,所以适配七寸RGB屏只注意以下几个点:

​ 1.修改设备树

​ 2.配置内核

​ 3.修改Uboot配置

内核设备树的位置:tina-v853-open/device/config/chips/v853/configs/100ask/board.dts

uboot设备树的位置:tina-v853-open/device/config/chips/v853/configs/100ask/board.dts

修改内核配置:在tina的根目录下执行make kernel_menuconfig

修改uboot配置:进入uboot的根目录tina-v853-open/brandy/brandy-2.0/u-boot-2018下执行make menuconfig

内核驱动位置:tina-v853-open/kernel/linux-4.9/drivers/video/fbdev/sunxi/disp2/disp/lcd/default_panel.c

uboot驱动位置:

tina-v853-open/brandy/brandy-2.0/u-boot-2018/drivers/video/sunxi/disp2/disp/lcd/default_panel.c

2.检查修改设备树

在Tina根目录下,输入cd device/config/chips/v853/configs/100ask/

book@100ask:~/workspaces/tina-v853-open$ cd device/config/chips/v853/configs/100ask/
book@100ask:~/workspaces/tina-v853-open/device/config/chips/v853/configs/100ask$ vi board.dts

2.1 修改内核设备树

修改 board.dts中的lcd0为:

&lcd0 {
        /* part 1 */
        lcd_used            = <1>;
        lcd_driver_name     = "default_lcd";
        lcd_backlight       = <100>;

        /* part 2 */
        lcd_if = <0>;
        lcd_hv_if = <0>;

        /* part 3 */
        lcd_x               = <1024>;
        lcd_y               = <600>;
        lcd_width           = <154>;
        lcd_height          = <85>;
        lcd_dclk_freq       = <51>;
        lcd_hbp             = <140>;
        lcd_ht              = <1344>;
        lcd_hspw            = <20>;
        lcd_vbp             = <20>;
        lcd_vt              = <635>;
        lcd_vspw            = <3>;

        lcd_pwm_used        = <1>;
        lcd_pwm_ch          = <9>;
        lcd_pwm_freq        = <500>;
        lcd_pwm_pol         = <1>;

        /* part 5 */
        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>;

        /* part 6 */
        lcd_power = "vcc-lcd";
        lcd_pin_power = "vcc-pd";
        pinctrl-0 = <&rgb18_pins_a>;
        pinctrl-1 = <&rgb18_pins_b>;
};

在&pio节点下增加rgb18_pins_a和rgb18_pins_b子节点,增加引脚复用功能

 rgb18_pins_a: rgb18@0 {
                allwinner,pins = "PD0", "PD1", "PD2", "PD3", "PD4", "PD5", \
                        "PD6", "PD7", "PD8", "PD9", "PD10", "PD11", \
                        "PD12", "PD13", "PD14", "PD15", "PD16", "PD17", \
                        "PD18", "PD19", "PD20", "PD21";
                allwinner,pname = "lcdd2", "lcdd3", "lcdd4", "lcdd5", "lcdd6", "lcdd7", \
                        "lcdd10", "lcdd11", "lcdd12", "lcdd13", "lcdd14", "lcdd15", \
                        "lcdd18", "lcdd19", "lcdd20", "lcdd21", "lcdd22", "lcdd23", \
                        "lcdpclk", "lcdde", "lcdhsync", "lcdvsync";
                allwinner,function = "lcd";
                allwinner,muxsel = <2>;
                allwinner,drive = <3>;
                allwinner,pull = <0>;
        };

        rgb18_pins_b: rgb18@1 {
                        allwinner,pins = "PD0", "PD1", "PD2", "PD3", "PD4", "PD5", \
                                        "PD6", "PD7", "PD8", "PD9", "PD10", "PD11", \
                                        "PD12", "PD13", "PD14", "PD15", "PD16", "PD17", \
                                        "PD18", "PD19", "PD20", "PD21";
                        allwinner,pname = "lcdd2", "lcdd3", "lcdd4", "lcdd5", "lcdd6", "lcdd7", \
                                        "lcdd10", "lcdd11", "lcdd12", "lcdd13", "lcdd14", "lcdd15", \
                                        "lcdd18", "lcdd19", "lcdd20", "lcdd21", "lcdd22", "lcdd23", \
                                        "lcdpclk", "lcdde", "lcdhsync", "lcdvsync";
                        allwinner,function = "io_disabled";
                        allwinner,muxsel = <0xf>;
                        allwinner,drive = <3>;
                        allwinner,pull = <0>;
        };

2.2 修改uboot设备树

在同一目录下修改uboot设备树

book@100ask:~/workspaces/tina-v853-open/device/config/chips/v853/configs/100ask$ vi uboot-board.dts
&lcd0 {
        lcd_used            = <1>;
        lcd_driver_name     = "default_lcd";
        lcd_backlight       = <100>;

        lcd_if = <0>;
        lcd_hv_if = <0>;

        lcd_x               = <1024>;
        lcd_y               = <600>;
        lcd_width           = <154>;
        lcd_height          = <85>;
        lcd_dclk_freq       = <51>;
        lcd_hbp             = <140>;
        lcd_ht              = <1344>;
        lcd_hspw            = <20>;
        lcd_vbp             = <20>;
        lcd_vt              = <635>;
        lcd_vspw            = <3>;

        lcd_pwm_used        = <1>;
        lcd_pwm_ch          = <9>;
        lcd_pwm_freq        = <5000>;
        lcd_pwm_pol         = <1>;

        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_power = "vcc-lcd";
        lcd_pin_power = "vcc-pd";
        pinctrl-0 = <&rgb18_pins_a>;
        pinctrl-1 = <&rgb18_pins_b>;
};

在&pio节点下增加rgb18_pins_a和rgb18_pins_b子节点,增加引脚复用功能

rgb18_pins_a: rgb18@0 {
                allwinner,pins = "PD0", "PD1", "PD2", "PD3", "PD4", "PD5", \
                        "PD6", "PD7", "PD8", "PD9", "PD10", "PD11", \
                        "PD12", "PD13", "PD14", "PD15", "PD16", "PD17", \
                        "PD18", "PD19", "PD20", "PD21";
                allwinner,pname = "lcdd2", "lcdd3", "lcdd4", "lcdd5", "lcdd6", "lcdd7", \
                        "lcdd10", "lcdd11", "lcdd12", "lcdd13", "lcdd14", "lcdd15", \
                        "lcdd18", "lcdd19", "lcdd20", "lcdd21", "lcdd22", "lcdd23", \
                        "lcdpclk", "lcdde", "lcdhsync", "lcdvsync";
                allwinner,function = "lcd";
                allwinner,muxsel = <2>;
                allwinner,drive = <3>;
                allwinner,pull = <0>;
        };
        rgb18_pins_b: rgb18@1 {
                        allwinner,pins = "PD0", "PD1", "PD2", "PD3", "PD4", "PD5", \
                                        "PD6", "PD7", "PD8", "PD9", "PD10", "PD11", \
                                        "PD12", "PD13", "PD14", "PD15", "PD16", "PD17", \
                                        "PD18", "PD19", "PD20", "PD21";
                        allwinner,pname = "lcdd2", "lcdd3", "lcdd4", "lcdd5", "lcdd6", "lcdd7", \
                                        "lcdd10", "lcdd11", "lcdd12", "lcdd13", "lcdd14", "lcdd15", \
                                        "lcdd18", "lcdd19", "lcdd20", "lcdd21", "lcdd22", "lcdd23", \
                                        "lcdpclk", "lcdde", "lcdhsync", "lcdvsync";
                        allwinner,function = "io_disabled";
                        allwinner,muxsel = <0xf>;
                        allwinner,drive = <3>;
                        allwinner,pull = <0>;
        };

3.检查修改内核配置和uboot配置

3.1 修改内核配置

在Tina的根目录下输入make kernel_menuconfig

book@100ask:~/workspaces/tina-v853-open$ make kernel_menuconfig

通过方向键,选择并进入如下目录,输入Y开启DISP Driver Support

 → Device Drivers 
 	→ Graphics support 
 		→ Frame buffer Devices 
 			→ Video support for sunxi
 				<*> DISP Driver Support(sunxi-disp2)

如下图所示:

选中后,通过方向键选择Save,按下回车。

image-20230411185717558

按下后会提示您是否确认保存备份,选择OK

image-20230411190013770

此时我们所修改的配置将保存在tina-v853-open/kernel/linux-4.9/.config文件中,继续按下回车退出。

image-20230411190051184

保存完成后,通过方向键选择Exit,一直选择Exit,直到退出内核配置界面

image-20230411190138923

3.2 修改uboot配置

想要修改uboot,需要进入tina-v853-open/brandy/brandy-2.0/u-boot-2018目录下,执行make menuconfig

book@100ask:~/workspaces/tina-v853-open$ cd brandy/brandy-2.0/u-boot-2018/
book@100ask:~/workspaces/tina-v853-open/brandy/brandy-2.0/u-boot-2018$ make menuconfig

通过方向键进入

→ Device Drivers 
	→ Graphics support 
		 [*] DISP Driver Support(sunxi-disp2)  --->

如下图所示:

选中后,通过方向键选择Save,按下回车。

image-20230411185717558

按下后会提示您是否确认保存备份,选择OK

image-20230411190013770

此时我们所修改的配置将保存在tina-v853-open/brandy/brandy-2.0/u-boot-2018/.config文件中,继续按下回车退出。

image-20230411190051184

保存完成后,通过方向键选择Exit,一直选择Exit,直到退出uboot配置界面

image-20230411190138923

4.七寸RGB屏驱动程序

内核和uboot中的驱动程序都是同一套,可以复用的。由于我们选中了sunxi-disp2,都会默认去编译default_panel.c驱动程序。

内核驱动位置:tina-v853-open/kernel/linux-4.9/drivers/video/fbdev/sunxi/disp2/disp/lcd/default_panel.c

uboot驱动位置:

tina-v853-open/brandy/brandy-2.0/u-boot-2018/drivers/video/sunxi/disp2/disp/lcd/default_panel.c

/*
 * drivers/video/sunxi/disp2/disp/lcd/default_panel.c
 *
 * Copyright (c) 2007-2019 Allwinnertech Co., Ltd.
 * Author: zhengxiaobin <zhengxiaobin@allwinnertech.com>
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */
#include "default_panel.h"

static void LCD_power_on(u32 sel);
static void LCD_power_off(u32 sel);
static void LCD_bl_open(u32 sel);
static void LCD_bl_close(u32 sel);

static void LCD_panel_init(u32 sel);
static void LCD_panel_exit(u32 sel);

static void LCD_cfg_panel_info(panel_extend_para * info)
{
        u32 i = 0, j=0;
        u32 items;
        u8 lcd_gamma_tbl[][2] =
        {
                //{input value, corrected value}
                {0, 0},
                {15, 15},
                {30, 30},
                {45, 45},
                {60, 60},
                {75, 75},
                {90, 90},
                {105, 105},
                {120, 120},
                {135, 135},
                {150, 150},
                {165, 165},
                {180, 180},
                {195, 195},
                {210, 210},
                {225, 225},
                {240, 240},
                {255, 255},
        };

        u32 lcd_cmap_tbl[2][3][4] = {
        {
                {LCD_CMAP_G0,LCD_CMAP_B1,LCD_CMAP_G2,LCD_CMAP_B3},
                {LCD_CMAP_B0,LCD_CMAP_R1,LCD_CMAP_B2,LCD_CMAP_R3},
                {LCD_CMAP_R0,LCD_CMAP_G1,LCD_CMAP_R2,LCD_CMAP_G3},
                },
                {
                {LCD_CMAP_B3,LCD_CMAP_G2,LCD_CMAP_B1,LCD_CMAP_G0},
                {LCD_CMAP_R3,LCD_CMAP_B2,LCD_CMAP_R1,LCD_CMAP_B0},
                {LCD_CMAP_G3,LCD_CMAP_R2,LCD_CMAP_G1,LCD_CMAP_R0},
                },
        };

        items = sizeof(lcd_gamma_tbl)/2;
        for (i=0; i<items-1; i++) {
                u32 num = lcd_gamma_tbl[i+1][0] - lcd_gamma_tbl[i][0];

                for (j=0; j<num; j++) {
                        u32 value = 0;

                        value = lcd_gamma_tbl[i][1] + ((lcd_gamma_tbl[i+1][1] - lcd_gamma_tbl[i][1]) * j)/num;
                        info->lcd_gamma_tbl[lcd_gamma_tbl[i][0] + j] = (value<<16) + (value<<8) + value;
                }
        }
        info->lcd_gamma_tbl[255] = (lcd_gamma_tbl[items-1][1]<<16) + (lcd_gamma_tbl[items-1][1]<<8) + lcd_gamma_tbl[items-1][1];

        memcpy(info->lcd_cmap_tbl, lcd_cmap_tbl, sizeof(lcd_cmap_tbl));

}

static s32 LCD_open_flow(u32 sel)
{
        LCD_OPEN_FUNC(sel, LCD_power_on, 30);   //open lcd power, and delay 50ms
        LCD_OPEN_FUNC(sel, LCD_panel_init, 50);   //open lcd power, than delay 200ms
        LCD_OPEN_FUNC(sel, sunxi_lcd_tcon_enable, 100);     //open lcd controller, and delay 100ms
        LCD_OPEN_FUNC(sel, LCD_bl_open, 0);     //open lcd backlight, and delay 0ms

        return 0;
}

static s32 LCD_close_flow(u32 sel)
{
        LCD_CLOSE_FUNC(sel, LCD_bl_close, 0);       //close lcd backlight, and delay 0ms
        LCD_CLOSE_FUNC(sel, sunxi_lcd_tcon_disable, 0);         //close lcd controller, and delay 0ms
        LCD_CLOSE_FUNC(sel, LCD_panel_exit,     200);   //open lcd power, than delay 200ms
        LCD_CLOSE_FUNC(sel, LCD_power_off, 500);   //close lcd power, and delay 500ms

        return 0;
}

static void LCD_power_on(u32 sel)
{
        sunxi_lcd_power_enable(sel, 0);//config lcd_power pin to open lcd power0
        sunxi_lcd_pin_cfg(sel, 1);
}

static void LCD_power_off(u32 sel)
{
        sunxi_lcd_pin_cfg(sel, 0);
        sunxi_lcd_power_disable(sel, 0);//config lcd_power pin to close lcd power0
}

static void LCD_bl_open(u32 sel)
{
        sunxi_lcd_pwm_enable(sel);
        sunxi_lcd_backlight_enable(sel);//config lcd_bl_en pin to open lcd backlight
}

static void LCD_bl_close(u32 sel)
{
        sunxi_lcd_backlight_disable(sel);//config lcd_bl_en pin to close lcd backlight
        sunxi_lcd_pwm_disable(sel);
}

static void LCD_panel_init(u32 sel)
{
        return;
}

static void LCD_panel_exit(u32 sel)
{
        return ;
}

//sel: 0:lcd0; 1:lcd1
static s32 LCD_user_defined_func(u32 sel, u32 para1, u32 para2, u32 para3)
{
        return 0;
}

__lcd_panel_t default_panel = {
        /* panel driver name, must mach the name of lcd_drv_name in sys_config.fex */
        .name = "default_lcd",
        .func = {
                .cfg_panel_info = LCD_cfg_panel_info,
                .cfg_open_flow = LCD_open_flow,
                .cfg_close_flow = LCD_close_flow,
                .lcd_user_defined_func = LCD_user_defined_func,
        },
};

5.开启触摸功能

5.1修改设备树

修改设备树中的twi2节点下增加ctp触摸子节点

&twi2 {
        ctp@14 {
                compatible = "allwinner,gsl3680";
                device_type = "ctp";
                reg = <0x14>;
                status = "okay";
                ctp_name = "gt9xxnew_ts";
                ctp_twi_id = <0x2>;
                ctp_twi_addr = <0x14>;
                ctp_screen_max_x = <0x400>;
                ctp_screen_max_y = <0x258>;
                ctp_revert_x_flag = <0x0>;
                ctp_revert_y_flag = <0x0>;
                ctp_exchange_x_y_flag = <0x0>;
                ctp_int_port = <&pio PH 7 6 1 3 0xffffffff>;
                ctp_wakeup   = <&pio PH 8 1 1 3 0xffffffff>;
                //ctp-supply = <&reg_aldo2>;
                //ctp_power_ldo = <&reg_dldo1>;
                //ctp_power_ldo_vol = <3300>;
        };

};

并在lcd0节点后面使能twi2节点和引脚复用功能。

&twi2 {
        clock-frequency = <400000>;
        pinctrl-0 = <&twi2_pins_a>;
        pinctrl-1 = <&twi2_pins_b>;
        pinctrl-names = "default", "sleep";
        /* For stability and backwards compatibility, we recommend setting ‘twi_drv_used’ to 0  */
        twi_drv_used = <0>;
        twi-supply = <&reg_dcdc1>;
        twi_pkt_interval = <0>;
        //status = "disabled";
        status = "okay";
};

5.2 修改内核配置

​ 在Tina的根目录下执行make kernel_menuconfig

book@100ask:~/workspaces/tina-v853-open$ make kernel_menuconfig

进入下面的目录输入Y选中gt9xxnew touchscreen driver触摸驱动

→ Device Drivers 
	→ Input device support 
		→ Touchscreens 
			<*>   gt9xxnew touchscreen driver

如下图所示

保存并退出内核配置界面

6.打开lvgl示例程序

在Tina的根目录下,输入make menuconfig

book@100ask:~/workspaces/tina-v853-open$ make menuconfig

进入如下目录,并输入Y选中lv_examples

 > Gui 
 	> Littlevgl
 		 <*> lv_examples................................. lvgl examples use lvgl-8.1.0 

选中后保存并退出配置界面。

7.编译并打包生成镜像

由于我们第一次已经完整编译了系统,现在修改后编译系统的时间就不会特别长,具体时间取决于CPU的性能,在Tina的根目录下执行make -jN ,其中N为线程数,增加线程数提高编译速度。

book@100ask:~/workspaces/tina-v853-open$ make -j4

等待编译完成后,输入pack,打包生成镜像

book@100ask:~/workspaces/tina-v853-open$ pack

打包生成镜像后可以在tina-v853-open/out/v853/100ask/openwrt/目录下找到新的镜像文件

v853_linux_100ask_uart0.img,将该文件拷贝到windows电脑下备用。

8.烧录新镜像启动开发板

使用全志PhoenixSuit烧写工具进行新镜像的烧写,具体方法可以参见《100ASK_V853-PRO 环境配置及编译烧写》。

注意:需要在上电前连接七寸RGB屏,同时连接排线时需要注意排线的线序是否正确。

连接好七寸屏,再连接电源线和两条Type-C数据线,将开关拨向电源接口的方向即可上电启动开发板,在烧写新镜像完成后通过串口工具打开开发板的串口终端,进入Tina Linux的控制台界面,输入lv_examples 0,即可在七寸RGB屏上显示出LVGL的DEMO程序。

root@TinaLinux:/# lv_examples 0
wh=1024x600, vwh=1024x1200, bpp=32, rotated=0
Turn on double buffering.
Turn on 2d hardware acceleration.
Turn on 2d hardware acceleration rotate.

按照教程一步步适配,始终没有成功,有以下报错:
unable open evdev interface::no such file or directory.
运行显示字符的程序,也是黑屏。字符的程序也按照帖子里修改了

运行自带的七寸屏测试固件正常,但是在sdk源码基础上,按照上述操作编译出来的固件始终没法运行成功。“”“并在lcd0节点后面使能twi2节点和引脚复用功能”在节点后面是在花括号的里面还是lcd0节点花括号的外面呢?

运行lvgl demo是否有显示图像

你可以使用开发板配套的补丁文件编译镜像,详情请参考:100ASK_V853-PRO 环境配置及编译烧写

为什么我用自带的那个七寸的显示屏测试镜像执行命令屏幕也不会亮