楼主 #1 2021-04-14 16:50:58 分享评论
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f1c100s 移植lvgl lv_demo_widget();触摸事件有打印，屏幕没响应
# ./demo
The framebuffer device was opened successfully.
800x480, 32bpp
The framebuffer device was mapped to memory successfully.
821.911751: 315 299 255
821.950681: 315 299 0
822.191773: 315 306 255
822.231869: 312 314 255
822.270684: 310 319 0
832.591837: 288 256 255
832.630736: 288 256 0
833.071773: 338 304 255
833.110677: 338 304 0
833.511785: 356 304 255
833.550708: 356 304 0
833.831788: 516 306 255
833.870702: 516 306 0
834.991818: 307 257 255
835.030721: 307 257 0
835.311827: 307 256 255
835.350679: 307 256 0
835.671765: 431 258 255
835.710709: 431 258 0
837.511792: 590 287 255
837.550737: 590 287 0
838.031806: 338 283 255
838.070690: 338 283 0
839.551763: 319 301 255
839.590715: 319 301 0
int main(void)
{
/*LittlevGL init*/
lv_init();
/*Linux frame buffer device init*/
fbdev_init();
/*A small buffer for LittlevGL to draw the screen's content*/
static lv_color_t buf[DISP_BUF_SIZE];
/*Initialize a descriptor for the buffer*/
static lv_disp_buf_t disp_buf;
lv_disp_buf_init(&disp_buf, buf, NULL, DISP_BUF_SIZE);
/*Initialize and register a display driver*/
lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv);
disp_drv.buffer = &disp_buf;
disp_drv.flush_cb = fbdev_flush;
lv_disp_drv_register(&disp_drv);
/*Create a "Hello world!" label*/
//lv_obj_t * label = lv_label_create(lv_scr_act(), NULL);
//lv_label_set_text(label, "Hello world!");
//lv_obj_align(label, NULL, LV_ALIGN_CENTER, 0, 0);
lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv); /*Basic initialization*/
evdev_init();
indev_drv.type = LV_INDEV_TYPE_POINTER; /*See below.*/
indev_drv.read_cb = evdev_read; /*See below.*/
lv_indev_drv_register(&indev_drv); /*Register the driver in LittlevGL*/
lv_demo_widgets();
//lv_demo_keypad_encoder();
//lv_demo_stress();
//lv_test_theme_1(lv_theme_night_init(210, NULL));
//lv_demo_benchmark();
/*Handle LitlevGL tasks (tickless mode)*/
while(1) {
lv_tick_inc(5);
lv_task_handler();
usleep(5000);
}
return 0;
}
evdev_read
{
#if 0
struct input_event in;
while(read(evdev_fd, &in, sizeof(struct input_event)) > 0) {
if(in.type == EV_REL) {
if(in.code == REL_X)
#if EVDEV_SWAP_AXES
evdev_root_y += in.value;
#else
evdev_root_x += in.value;
#endif
else if(in.code == REL_Y)
#if EVDEV_SWAP_AXES
evdev_root_x += in.value;
#else
evdev_root_y += in.value;
#endif
} else if(in.type == EV_ABS) {
if(in.code == ABS_X)
#if EVDEV_SWAP_AXES
evdev_root_y = in.value;
#else
evdev_root_x = in.value;
#endif
else if(in.code == ABS_Y)
#if EVDEV_SWAP_AXES
evdev_root_x = in.value;
#else
evdev_root_y = in.value;
#endif
} else if(in.type == EV_KEY) {
if(in.code == BTN_MOUSE || in.code == BTN_TOUCH) {
if(in.value == 0)
evdev_button = LV_INDEV_STATE_REL;
else if(in.value == 1)
evdev_button = LV_INDEV_STATE_PR;
}
}
}
#endif
// tslib
struct ts_sample samp;
int ret;
/* 修改自tslib ts_print.c */
while (ts_read(ts, &samp, 1) == 1) {
printf("%ld.%06ld: %6d %6d %6d\n", samp.tv.tv_sec, samp.tv.tv_usec, samp.x, samp.y, samp.pressure);
#if EVDEV_SWAP_AXES
evdev_root_x = samp.y;
evdev_root_y = samp.x;
#else
evdev_root_x = samp.x;
evdev_root_y = samp.y;
#endif
if(samp.pressure == 0)
evdev_button = LV_INDEV_STATE_REL; //抬起
else if(samp.pressure == 255)
evdev_button = LV_INDEV_STATE_PR;
}
/*Store the collected data*/
#if EVDEV_SCALE
data->point.x = map(evdev_root_x, 0, EVDEV_SCALE_HOR_RES, 0, LV_HOR_RES);
data->point.y = map(evdev_root_y, 0, EVDEV_SCALE_VER_RES, 0, LV_VER_RES);
#else
#if EVDEV_CALIBRATE
data->point.x = map(evdev_root_x, EVDEV_HOR_MIN, EVDEV_HOR_MAX, 0, LV_HOR_RES);
data->point.y = map(evdev_root_y, EVDEV_VER_MIN, EVDEV_VER_MAX, 0, LV_VER_RES);
#else
data->point.x = evdev_root_x;
data->point.y = evdev_root_y;
#endif
#endif
data->state = evdev_button;
if(data->point.x < 0)
data->point.x = 0;
if(data->point.y < 0)
data->point.y = 0;
if(data->point.x >= LV_HOR_RES)
data->point.x = LV_HOR_RES - 1;
if(data->point.y >= LV_VER_RES)
data->point.y = LV_VER_RES - 1;
return false;
}离线
楼主 #2 2021-04-14 16:51:40 分享评论
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Re: f1c100s 移植lvgl lv_demo_widget();触摸事件有打印，屏幕没响应
请问触摸和lvgl是如何关联起来的？
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#3 2021-04-14 17:24:27 分享评论
Re: f1c100s 移植lvgl lv_demo_widget();触摸事件有打印，屏幕没响应
lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv); /*Basic initialization*/
evdev_init();
indev_drv.type = LV_INDEV_TYPE_POINTER; /*See below.*/
indev_drv.read_cb = evdev_read; /*See below.*/
lv_indev_drv_register(&indev_drv); /*Register the driver in LittlevGL*/
注册输入设备驱动
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楼主 #4 2021-04-14 17:42:07 分享评论
- 542396750@qq.com
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Re: f1c100s 移植lvgl lv_demo_widget();触摸事件有打印，屏幕没响应
哇酷小二 说：
lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv); /*Basic initialization*/
evdev_init();
indev_drv.type = LV_INDEV_TYPE_POINTER; /*See below.*/
indev_drv.read_cb = evdev_read; /*See below.*/
lv_indev_drv_register(&indev_drv); /*Register the driver in LittlevGL*/注册输入设备驱动
您好，有注册的。
触摸屏幕有打印出坐标
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#5 2021-04-14 20:43:05 分享评论
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楼主 #6 2021-04-15 08:39:20 分享评论
- 542396750@qq.com
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- 积分： 19.5
Re: f1c100s 移植lvgl lv_demo_widget();触摸事件有打印，屏幕没响应
哇酷小二 说：
while (ts_read(ts, &samp, 1) == 1) {
printf("%ld.%06ld: %6d %6d %6d\n", samp.tv.tv_sec, samp.tv.tv_usec, samp.x, samp.y, samp.pressure);
这里有执行吗?
有执行的，触摸终端就会printf坐标。
现在怀疑是不是lvgl要加事件处理回调函数
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楼主 #7 2021-04-15 11:19:20 分享评论
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Re: f1c100s 移植lvgl lv_demo_widget();触摸事件有打印，屏幕没响应
typedef struct _lv_indev_drv_t {
/**< Input device type*/
lv_indev_type_t type;
/**< Function pointer to read input device data.
* Return 'true' if there is more data to be read (buffered).
* Most drivers can safely return 'false' */
bool (*read_cb)(struct _lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
/** Called when an action happened on the input device.
* The second parameter is the event from `lv_event_t`*/
void (*feedback_cb)(struct _lv_indev_drv_t *, uint8_t);
#if LV_USE_USER_DATA
lv_indev_drv_user_data_t user_data;
#endif
/**< Pointer to the assigned display*/
struct _disp_t * disp;
/**< Task to read the periodically read the input device*/
lv_task_t * read_task;
/**< Number of pixels to slide before actually drag the object*/
uint8_t drag_limit;
/**< Drag throw slow-down in [%]. Greater value means faster slow-down */
uint8_t drag_throw;
/**< At least this difference should between two points to evaluate as gesture */
uint8_t gesture_min_velocity;
/**< At least this difference should be to send a gesture */
uint8_t gesture_limit;
/**< Long press time in milliseconds*/
uint16_t long_press_time;
/**< Repeated trigger period in long press [ms] */
uint16_t long_press_rep_time;
} lv_indev_drv_t;MD，可以了，由于版本差异，evdev_read的形参没对应上
bool evdev_read(lv_indev_data_t * data);改为
bool evdev_read(lv_indev_drv_t * indev_drv,lv_indev_data_t * data);
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