5 LVGL控件刷新死机问题

发布于 2021-09-15 16:30:31 浏览：4254 订阅该版

[tocm]

坛友们，最近遇到一个头大的问题，使用littlevgl2rtt移植littlevgl，做个几个页面，死机的问题，主函数的内容如下，只刷新一个文本框的值。

```c
        rt_pin_detach_irq(Column_A);
        rt_pin_detach_irq(Column_B);
        rt_pin_detach_irq(Column_C);
        rt_pin_detach_irq(Column_D);
        rt_pin_detach_irq(Column_E);
        rt_pin_detach_irq(Column_F);
        rt_mutex_take(dynamic_mutex, RT_WAITING_FOREVER);

if (guider_ui.screen == lv_scr_act())
        {
            //lv_label_set_text(guider_ui.screen_label_1, strff);
            lv_textarea_set_text(guider_ui.screen_ta_1, "strff\0");
        }
        rt_mutex_release(dynamic_mutex);
        rt_pin_attach_irq(Column_A, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x01);
        rt_pin_attach_irq(Column_B, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x02);
        rt_pin_attach_irq(Column_C, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x03);
        rt_pin_attach_irq(Column_D, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x04);
        rt_pin_attach_irq(Column_E, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x05);
        rt_pin_attach_irq(Column_F, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x06);
```
## 硬件平台
stm32f407zet6 ili9431 240*320 lcd，使用键盘，无触摸，无SDRAM
## 软件平台
使用nxp gui guider开发页面之后添加文件到工程，
```c
lv_ui guider_ui;
static void lvgl_demo_run(void *p)
{
    // lv_demo_widgets();
    setup_ui(&guider_ui);
    events_init(&guider_ui);
} 
```

## 输入设备
矩阵键盘扫描后会发送按键值，对接lvgl的按键接口，其他的地方都没有修改,对接rtt的修改如下了
```c
static void lvgl_tick_run(void *p)
{
    // if (_lv_init)
    // {
    //     lv_tick_inc(5);
    // }
    while (1)
    {
        lv_tick_inc(5);
        rt_thread_delay(5);
    }
}

static int lvgl_tick_handler_init(void)
{
    // rt_timer_t timer = RT_NULL;
    // int ret;

// timer = rt_timer_create("lv_tick", lvgl_tick_run, RT_NULL, 5, RT_TIMER_FLAG_PERIODIC);
    // if (timer == RT_NULL)
    // {
    //     return RT_ERROR;
    // }
    // ret = rt_timer_start(timer);

// return ret;
    int ret;
    rt_thread_t thread = RT_NULL;

/* littleGL demo gui thread */
    thread = rt_thread_create("lv-tick", lvgl_tick_run, RT_NULL, 10 * 1024, 3, 10);
    ret = rt_thread_startup(thread);
    return ret;
}

static void lvgl_task_run(void *p)
{
    void *buf1 = disp_buf.buf1;
    static rt_base_t level;
    while (_lv_init)
    {
        rt_thread_mdelay(30);
        rt_pin_detach_irq(Column_A);
        rt_pin_detach_irq(Column_B);
        rt_pin_detach_irq(Column_C);
        rt_pin_detach_irq(Column_D);
        rt_pin_detach_irq(Column_E);
        rt_pin_detach_irq(Column_F);
        rt_mutex_take(dynamic_mutex, RT_WAITING_FOREVER);

lv_task_handler();
        rt_mutex_release(dynamic_mutex);
        rt_pin_attach_irq(Column_A, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x01);
        rt_pin_attach_irq(Column_B, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x02);
        rt_pin_attach_irq(Column_C, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x03);
        rt_pin_attach_irq(Column_D, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x04);
        rt_pin_attach_irq(Column_E, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x05);
        rt_pin_attach_irq(Column_F, PIN_IRQ_MODE_FALLING, keyboard_isr_function, (void *)0x06);

// rt_hw_interrupt_enable(level);
    }
#if (LV_ENABLE_GC == 1)
    lv_deinit();
#endif
    rt_free(buf1);
}
```

## 尝试过解决方案
1.    所有切换页面的地方加锁，关闭矩阵键盘的IO中断；
2.    把lvgl的任务处理线程都改到最高优先级；
3.    加大线程的栈空间；
4.    主函数中使用lv的地方也加锁；
5.    切换页面的时候删除对象，清理内存；

## 错误提示

```
psr: 0x21000000
r00: 0x00000001
r01: 0xd7080003
r02: 0x00000000
r03: 0x2000fac8
r04: 0xd7080003
r05: 0xd7080003
r06: 0xd7080003
r07: 0x00000051
r08: 0x2000faa0
r09: 0xdeadbeef
r10: 0xdeadbeef
r11: 0xdeadbeef
r12: 0x0805a621
 lr: 0x08044601
 pc: 0x08044612
hard fault on thread: main

thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
lv-task    5  suspend 0x0000008c 0x00002800    15%   0x00000006 000
lv-tick    3  suspend 0x00000074 0x00002800    01%   0x0000000a 000
tshell    20  suspend 0x00000084 0x00001000    03%   0x0000000a 000
thread1   20  suspend 0x00000090 0x00000200    28%   0x00000001 000
tidle0    31  ready   0x00000054 0x00000400    08%   0x00000011 000
main      10  running 0x00000094 0x00005000    04%   0x00000012 000
bus fault:
SCB_CFSR_BFSR:0x82 PRECISERR SCB->BFAR:D7080003
```
死在下面这个地方的概率很大

```
lv_obj_t * lv_obj_get_parent(const lv_obj_t * obj)
{
    LV_ASSERT_OBJ(obj, LV_OBJX_NAME);

return obj->parent;
}

```

最近这个问题卡了好久了，头大，看过很多这方面的历程，大都移植了demo，没看到具体的工程，每次出错的地址还不一样，有没有搞过的坛友指点一下迷津，感激不尽.