基于RA8D1MIPIDSI实现LVGL

原创瑞萨MCU小百科 2024-03-13 12:03 633浏览 0评论 0点赞

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介绍

本文介绍由e² studio自动生成的FSP LVGL pack的使用说明，Pack的生成方法可以参考前面的介绍文章。用户可以通过添加该pack，以可视化的形式添加和配置Little VGL，包括Little VGL的分辨率、色深、DPI以及官方的demo等进行配置。用户不用再做移植Little VGL的源代码，不用再繁琐的添加各个头文件。本次实验所用硬件为EK-RA8D1，如下图。确保板子的SW1-7切换到“ON”

Pack下载链接

复制网址到浏览器中打开：

https://gitee.com/recn-mcu-ae/lvgl-ra-8.3.6-pack/tree/master/internal/projectgen/ra/packs

软件架构

通过pack生成的代码主要在ra→fsp→src→rm_lvgl_prot和ra→lvgl两个路径下

安装教程

打开e² studio菜单中“File”→“Import... ”

在弹出的“Import”对话框中，选择“General”→“CMSIS Pack”，点击“Next”

在弹出的“Import CMSIS Pack”对话框中，点击“Specify pack file”右侧“...”，指定需要添加的pack文件

“Specify device family”选择“RA”，点击Finish

使用说明

重新打开e² studio

新建工程，新建工程步骤不再赘述，FSP版本选择5.1.0及以上，Board选择EK-RA8D1

新建好工程后，添加LVGL的stack，这时候会提示GLCDC的时钟没有打开，切换到clocks选项卡，enable LCD的clock，选择PLL1P，让LCD时钟输出为240MHz即可。

添加MIPI DSI driver，左键点击Add MIPI DSI Output(Optional)→New→MIPI Display(r_mipi_dsi):

NOTE

Enable LCD的clock后，r_glcdc的红色提示会消失。

修改LVGL显示分辨率：480*854，enable 2D

使能touch

修改glcdc的名字为g_display_lvgl：

添加2D驱动，如果上述步骤没有enable 2D，此步骤可以跳过。New Stack→Graphics→D/AVE 2D Port Interface

添加完2D stack后，在BSP选项卡中heap给2D使用，同时加大stack的值为0x2000：

添加I2C驱动

修改I2C的配置，Name: g_i2c_master1, Channel: 1, Slave address: 0x5D, Callback: g_i2c_master1_cb, Interrupt Priority Level：Priority 12

添加GPIO中断，修改irq的配置：Name：g_external_irq3，Channel：3，Callback：touch_irq_cb

P510设为input模式，IRQ选择为IRQ3

配置引脚，改变SDRAM的引脚驱动能力：PA00 -- H， PA08 -- H， PA09 -- HH， PA10 -- H， P404设为输出模式，初始化为高电平，PA01设为输出模式，初始化为高电平

点击Generate Project Content，生成代码

添加应用代码，做一个LVGL下拉控件。修改 hal_entry.c如下：

上下滑动查看更多

左右滑动查看完整代码内容

#include "hal_data.h"#include "dsi_layer.h"#include "lvgl.h"#include "lv_demos.h"
FSP_CPP_HEADERvoid R_BSP_WarmStart(bsp_warm_start_event_t event);FSP_CPP_FOOTER

#define RGB_565_REG    (0x1F << 11)#define RGB_565_GREEN  (0x3F << 5)#define RGB_565_BLUE   (0x1F << 0)
/* Global variable to keep track of requested application */void SysTick_Handler(void);
#define LVGL_TICK_MS 1Ustatic volatile uint32_t s_tick        = 0U;static volatile bool s_lvglTaskPending = false;#define LVGL_TASK_PERIOD_TICK 3Ustatic void DEMO_SetupTick(void){if (0 != SysTick_Config(SystemCoreClock / (LVGL_TICK_MS * 1000U))){while (1);}}
void SysTick_Handler(void){s_tick++;lv_tick_inc(LVGL_TICK_MS);
if ((s_tick % LVGL_TASK_PERIOD_TICK) == 0U){s_lvglTaskPending = true;}}
#if LV_BUILD_EXAMPLES
static void event_handler(lv_event_t * e){lv_event_code_t code = lv_event_get_code(e);lv_obj_t * obj = lv_event_get_target(e);if(code == LV_EVENT_VALUE_CHANGED) {char buf[32];lv_dropdown_get_selected_str(obj, buf, sizeof(buf));LV_LOG_USER("Option: %s", buf);}}
void lv_example_dropdown_1(void){
/*Create a normal drop down list*/lv_obj_t * dd = lv_dropdown_create(lv_scr_act());lv_dropdown_set_options(dd, "Apple\n""Banana\n""Orange\n""Cherry\n""Grape\n""Raspberry\n""Melon\n""Orange\n""Lemon\n""Nuts");
lv_obj_align(dd, LV_ALIGN_TOP_MID, 0, 20);lv_obj_add_event_cb(dd, event_handler, LV_EVENT_ALL, NULL);}#endif
/*******************************************************************************************************************//**main() is generated by the RA Configuration editor and is used to generate threads if an RTOS is used.  This functionis called by main() when no RTOS is used.**********************************************************************************************************************/void hal_entry(void){
/* TODO: add your own code here */fsp_err_t  err;/* Fill the Frame buffer with Blue, to zero out info from previous execution runs */uint32_t count;
uint16_t * p = (uint16_t *)&fb_background[0][0];for (count = 0; count < sizeof(fb_background)/2; count++){*p++ = RGB_565_REG;}
DEMO_SetupTick();lv_init();
lv_port_disp_init();#if Touch_Enablelv_port_indev_init();#endif
lv_example_dropdown_1();#if LV_USE_DEMO_WIDGETS//       lv_demo_widgets();#endif
#if LV_USE_DEMO_STRESSlv_demo_stress();#endif#if LV_USE_DEMO_BENCHMARKlv_demo_benchmark();#endif#if LV_USE_DEMO_MUSIClv_demo_music();#endif//    lv_task_handler();/* handle the tasks of LVGL */while(1){while (!s_lvglTaskPending){}s_lvglTaskPending = false;lv_task_handler();}


#if BSP_TZ_SECURE_BUILD/* Enter non-secure code */R_BSP_NonSecureEnter();#endif}
/*******************************************************************************************************************//**This function is called at various points during the startup process.  This implementation uses the event that iscalled right before main() to set up the pins.** @param[in]  event    Where at in the start up process the code is currently at**********************************************************************************************************************/void R_BSP_WarmStart(bsp_warm_start_event_t event){if (BSP_WARM_START_RESET == event){#if BSP_FEATURE_FLASH_LP_VERSION != 0
/* Enable reading from data flash. */R_FACI_LP→DFLCTL = 1U;
/* Would normally have to wait tDSTOP(6us) for data flash recovery. Placing the enable here, before clock andC runtime initialization, should negate the need for a delay since the initialization will typically take more than 6us. */#endif}
if (BSP_WARM_START_POST_C == event){/* C runtime environment and system clocks are setup. */
/* Configure pins. */R_IOPORT_Open (&g_ioport_ctrl, &IOPORT_CFG_NAME);
bsp_sdram_init(); //SDRAM pins need to be set to HIGH drive strength in pin configuration}}
#if BSP_TZ_SECURE_BUILD
FSP_CPP_HEADERBSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable ();
/* Trustzone Secure Projects require at least one nonsecure callable function in order to build (Remove this if it is not required to build). */BSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable (){
}FSP_CPP_FOOTER
#endif

编译，下载到EK-RA8D1，连接MIPI屏，会得到以下结果：

至此，已经完成LVGL的移植以及测试。下面我们直接配置FSP，把官方的demo使能起来：打开configuration.xml,配置如下：

配置完成后，点击Generate Project Content。修改hal_entry.c:

上下滑动查看更多

左右滑动查看完整代码内容

 #include "hal_data.h" #include "dsi_layer.h" #include "lvgl.h" #include "lv_demos.h"
 FSP_CPP_HEADER void R_BSP_WarmStart(bsp_warm_start_event_t event); FSP_CPP_FOOTER

 #define RGB_565_REG    (0x1F << 11) #define RGB_565_GREEN  (0x3F << 5) #define RGB_565_BLUE   (0x1F << 0)
 /* Global variable to keep track of requested application */ void SysTick_Handler(void);
 #define LVGL_TICK_MS 1U static volatile uint32_t s_tick        = 0U; static volatile bool s_lvglTaskPending = false; #define LVGL_TASK_PERIOD_TICK 3U static void DEMO_SetupTick(void){    if (0 != SysTick_Config(SystemCoreClock / (LVGL_TICK_MS * 1000U)))    {        while (1)            ;    } }
 void SysTick_Handler(void){    s_tick++;    lv_tick_inc(LVGL_TICK_MS);
    if ((s_tick % LVGL_TASK_PERIOD_TICK) == 0U)    {        s_lvglTaskPending = true;    } }
 #if LV_BUILD_EXAMPLES
 static void event_handler(lv_event_t * e){    lv_event_code_t code = lv_event_get_code(e);    lv_obj_t * obj = lv_event_get_target(e);    if(code == LV_EVENT_VALUE_CHANGED) {        char buf[32];        lv_dropdown_get_selected_str(obj, buf, sizeof(buf));        LV_LOG_USER("Option: %s", buf);    } }
 void lv_example_dropdown_1(void){
    /*Create a normal drop down list*/    lv_obj_t * dd = lv_dropdown_create(lv_scr_act());    lv_dropdown_set_options(dd, "Apple\n"                            "Banana\n"                            "Orange\n"                            "Cherry\n"                            "Grape\n"                            "Raspberry\n"                            "Melon\n"                            "Orange\n"                            "Lemon\n"                            "Nuts");
    lv_obj_align(dd, LV_ALIGN_TOP_MID, 0, 20);    lv_obj_add_event_cb(dd, event_handler, LV_EVENT_ALL, NULL); } #endif
 /*******************************************************************************************************************//**  * main() is generated by the RA Configuration editor and is used to generate threads if an RTOS is used.  This function  * is called by main() when no RTOS is used.  **********************************************************************************************************************/ void hal_entry(void){
    /* TODO: add your own code here */    fsp_err_t  err;    /* Fill the Frame buffer with Blue, to zero out info from previous execution runs */    uint32_t count;
    uint16_t * p = (uint16_t *)&fb_background[0][0];    for (count = 0; count < sizeof(fb_background)/2; count++)    {        *p++ = RGB_565_REG;    }
    DEMO_SetupTick(); //为lvgl提供心跳    lv_init();     lv_port_disp_init(); #if Touch_Enable    lv_port_indev_init(); #endif
 //       lv_example_dropdown_1(); #if LV_USE_DEMO_WIDGETS    lv_demo_widgets(); #endif
 #if LV_USE_DEMO_STRESS    lv_demo_stress(); #endif #if LV_USE_DEMO_BENCHMARK    lv_demo_benchmark(); #endif #if LV_USE_DEMO_MUSIC    lv_demo_music(); #endif //    lv_task_handler();    /* handle the tasks of LVGL */    while(1)    {        while (!s_lvglTaskPending)        {        }        s_lvglTaskPending = false;        lv_task_handler();    }


 #if BSP_TZ_SECURE_BUILD    /* Enter non-secure code */    R_BSP_NonSecureEnter(); #endif }
    /*******************************************************************************************************************//**    * This function is called at various points during the startup process.  This implementation uses the event that is    * called right before main() to set up the pins.    *    * @param[in]  event    Where at in the start up process the code is currently at    **********************************************************************************************************************/    void R_BSP_WarmStart(bsp_warm_start_event_t event){        if (BSP_WARM_START_RESET == event)        {    #if BSP_FEATURE_FLASH_LP_VERSION != 0
            /* Enable reading from data flash. */            R_FACI_LP→DFLCTL = 1U;
            /* Would normally have to wait tDSTOP(6us) for data flash recovery. Placing the enable here, before clock and            * C runtime initialization, should negate the need for a delay since the initialization will typically take more than 6us. */    #endif        }
        if (BSP_WARM_START_POST_C == event)        {            /* C runtime environment and system clocks are setup. */
            /* Configure pins. */            R_IOPORT_Open (&g_ioport_ctrl, &IOPORT_CFG_NAME);
            bsp_sdram_init(); //SDRAM pins need to be set to HIGH drive strength in pin configuration        }    }
    #if BSP_TZ_SECURE_BUILD
    FSP_CPP_HEADER    BSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable ();
    /* Trustzone Secure Projects require at least one nonsecure callable function in order to build (Remove this if it is not required to build). */    BSP_CMSE_NONSECURE_ENTRY void template_nonsecure_callable (){
    }    FSP_CPP_FOOTER
    #endif