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buffyboard: rotate the keyboard according to /sys/class/graphics/fbcon/rotate

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This commit is contained in:
Vladimir Stoiakin 2025-06-18 18:13:25 +03:00
parent dd30685f75
commit b37cc6ed92
1 changed files with 36 additions and 3 deletions
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39
buffyboard/command_line.c
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@ -10,9 +10,11 @@
#include "../shared/log.h" #include "../shared/log.h"
#include <fcntl.h>
#include <getopt.h> #include <getopt.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <unistd.h>
/** /**
@ -46,6 +48,37 @@ static void init_opts(bb_cli_opts *opts) {
opts->dpi = 0; opts->dpi = 0;
opts->rotation = LV_DISPLAY_ROTATION_0; opts->rotation = LV_DISPLAY_ROTATION_0;
opts->verbose = false; opts->verbose = false;
int fd_rotate = open("/sys/class/graphics/fbcon/rotate", O_RDONLY);
if (fd_rotate < 0) {
bbx_log(BBX_LOG_LEVEL_WARNING, "Can not open /sys/class/graphics/fbcon/rotate");
goto end;
}
char buffer[3];
int size = read(fd_rotate, buffer, sizeof(buffer));
if (size != 2 || buffer[1] != '\n') {
bbx_log(BBX_LOG_LEVEL_WARNING, "Unexpected value of /sys/class/graphics/fbcon/rotate");
goto end;
}
switch (buffer[0]) {
case '0':
opts->rotation = LV_DISPLAY_ROTATION_0;
break;
case '1':
opts->rotation = LV_DISPLAY_ROTATION_270;
break;
case '2':
opts->rotation = LV_DISPLAY_ROTATION_180;
break;
case '3':
opts->rotation = LV_DISPLAY_ROTATION_90;
break;
}
end:
close(fd_rotate);
} }
static void print_usage() { static void print_usage() {
@ -126,9 +159,9 @@ void bb_cli_parse_opts(int argc, char *argv[], bb_cli_opts *opts) {
} }
break; break;
case 'r': { case 'r': {
int orientation; unsigned int orientation;
if (sscanf(optarg, "%i", &orientation) != 1 || orientation < 0 || orientation > 3) { if (sscanf(optarg, "%u", &orientation) != 1 || orientation > 3) {
fprintf(stderr, "Invalid orientation argument \"%s\"\n", optarg); bbx_log(BBX_LOG_LEVEL_ERROR, "Invalid orientation argument \"%s\"\n", optarg);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
switch (orientation) { switch (orientation) {