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Scan for input devices on Linux, show splashscreen

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This commit is contained in:
Kuba Szczodrzyński 2024-02-08 19:44:12 +01:00
parent fdc5f9170a
commit 9693ef361a
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GPG Key ID: 43037AC62A600562
1 changed files with 77 additions and 2 deletions
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79
src/drv/tft/tft_driver_posix_fbdev.cpp
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@ -26,6 +26,14 @@
#endif
#include <unistd.h>
#include <dirent.h>
#include <fcntl.h>
#if USE_BSD_EVDEV
#include <dev/evdev/input.h>
#else
#include <linux/input.h>
#endif
extern uint16_t tft_width;
extern uint16_t tft_height;
@ -82,7 +90,74 @@ void TftFbdevDrv::init(int32_t w, int h)
tft_height = _height;
#if USE_EVDEV || USE_BSD_EVDEV
evdev_register("/dev/input/event2", LV_INDEV_TYPE_POINTER, NULL);
DIR* dir = opendir("/dev/input");
if(dir == NULL) {
perror("/dev/input opendir failed");
} else {
// iterate through /dev/input devices
struct dirent* dirent;
unsigned char ev_type[EV_MAX / 8 + 1];
while((dirent = readdir(dir)) != NULL) {
// make sure it's a block device matching /dev/input/event*
if(strncmp(dirent->d_name, "event", 5) != 0 || strlen(dirent->d_name) <= 5) continue;
if(dirent->d_type != DT_CHR) continue;
// get full path
char dev_path[64];
strcpy(dev_path, "/dev/input/");
strcat(dev_path, dirent->d_name);
#if USE_BSD_EVDEV
// open the device
int fd = open(dev_path, O_RDONLY | O_NOCTTY);
#else
int fd = open(dev_path, O_RDONLY | O_NOCTTY | O_NDELAY);
#endif
if(fd == -1) {
perror("input open failed");
continue;
}
// read supported event types
memset(ev_type, 0, sizeof(ev_type));
if(ioctl(fd, EVIOCGBIT(0, sizeof(ev_type)), ev_type) < 0) {
perror("ioctl failed");
close(fd);
continue;
}
// read device name
char dev_name[256];
if(ioctl(fd, EVIOCGNAME(sizeof(dev_name)), dev_name) < 0) {
perror("ioctl failed");
close(fd);
continue;
}
// check which types are supported; judge LVGL device type
lv_indev_type_t dev_type;
if(ev_type[EV_ABS / 8] & (1 << (EV_ABS % 8))) {
dev_type = LV_INDEV_TYPE_POINTER;
} else if(ev_type[EV_REL / 8] & (1 << (EV_REL % 8))) {
dev_type = LV_INDEV_TYPE_POINTER;
} else if(ev_type[EV_KEY / 8] & (1 << (EV_KEY % 8))) {
dev_type = LV_INDEV_TYPE_KEYPAD;
} else {
close(fd);
continue;
}
// register the device
switch(dev_type) {
case LV_INDEV_TYPE_POINTER:
LOG_VERBOSE(TAG_TFT, F("Pointer : %s (%s)"), dev_path, dev_name);
break;
case LV_INDEV_TYPE_KEYPAD:
LOG_VERBOSE(TAG_TFT, F("Keypad : %s (%s)"), dev_path, dev_name);
break;
default:
LOG_VERBOSE(TAG_TFT, F("Input : %s (%s)"), dev_path, dev_name);
break;
}
evdev_register(dev_path, dev_type, NULL);
close(fd);
}
closedir(dir);
}
#endif
#if HASP_USE_LVGL_TASK
@ -105,7 +180,7 @@ void TftFbdevDrv::splashscreen()
uint8_t bg[] = logoBgColor;
lv_color_t fgColor = lv_color_make(fg[0], fg[1], fg[2]);
lv_color_t bgColor = lv_color_make(bg[0], bg[1], bg[2]);
// TODO show splashscreen
fbdev_splashscreen(logoImage, logoWidth, logoHeight, fgColor, bgColor);
}
void TftFbdevDrv::set_rotation(uint8_t rotation)
{}