uint8_t matrix_scan(void)
{
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
select_col(col);
_delay_us(3); // TODO: Determine the correct value needed here.
uint8_t rows = read_rows();
if((col == 0 && !LAYOUT_MINI) || (col == 2 && LAYOUT_MINI) ) {
rows |= read_caps();
}
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
bool curr_bit = rows & (1<<row);
if (prev_bit != curr_bit) {
matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
if (debouncing) {
dprint("bounce!: "); dprintf("%02X", debouncing); dprintln();
}
debouncing = DEBOUNCE;
}
}
unselect_cols();
}
if (debouncing) {
if (--debouncing) {
_delay_ms(1);
} else {
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
matrix[i] = matrix_debouncing[i];
}
}
}
return 1;
}
int main(int argc, char **argv)
{
int tried_to_cap_setfcap = 0;
char buffer[MAXCAP+1];
int retval, quiet=0, verify=0;
cap_t mycaps;
cap_value_t capflag;
if (argc < 3) {
usage();
}
mycaps = cap_get_proc();
if (mycaps == NULL) {
fprintf(stderr, "warning - unable to get process capabilities"
" (old libcap?)\n");
}
while (--argc > 0) {
const char *text;
cap_t cap_d;
if (!strcmp(*++argv, "-q")) {
quiet = 1;
continue;
}
if (!strcmp(*argv, "-v")) {
verify = 1;
continue;
}
if (!strcmp(*argv, "-r")) {
cap_d = NULL;
} else {
if (!strcmp(*argv,"-")) {
retval = read_caps(quiet, *argv, buffer);
if (retval)
usage();
text = buffer;
} else {
text = *argv;
}
cap_d = cap_from_text(text);
if (cap_d == NULL) {
perror("fatal error");
usage();
}
#ifdef DEBUG
{
ssize_t length;
const char *result;
result = cap_to_text(cap_d, &length);
fprintf(stderr, "caps set to: [%s]\n", result);
}
#endif
}
if (--argc <= 0)
usage();
/*
* Set the filesystem capability for this file.
*/
if (verify) {
cap_t cap_on_file;
int cmp;
if (cap_d == NULL) {
cap_d = cap_from_text("=");
}
cap_on_file = cap_get_file(*++argv);
if (cap_on_file == NULL) {
cap_on_file = cap_from_text("=");
}
cmp = cap_compare(cap_on_file, cap_d);
cap_free(cap_on_file);
if (cmp != 0) {
if (!quiet) {
printf("%s differs in [%s%s%s]\n", *argv,
CAP_DIFFERS(cmp, CAP_PERMITTED) ? "p" : "",
CAP_DIFFERS(cmp, CAP_INHERITABLE) ? "i" : "",
CAP_DIFFERS(cmp, CAP_EFFECTIVE) ? "e" : "");
}
exit(1);
}
if (!quiet) {
printf("%s: OK\n", *argv);
}
} else {
if (!tried_to_cap_setfcap) {
capflag = CAP_SETFCAP;
/*
* Raise the effective CAP_SETFCAP.
*/
if (cap_set_flag(mycaps, CAP_EFFECTIVE, 1, &capflag, CAP_SET)
!= 0) {
perror("unable to manipulate CAP_SETFCAP - "
"try a newer libcap?");
exit(1);
}
if (cap_set_proc(mycaps) != 0) {
perror("unable to set CAP_SETFCAP effective capability");
exit(1);
}
tried_to_cap_setfcap = 1;
}
retval = cap_set_file(*++argv, cap_d);
if (retval != 0) {
fprintf(stderr,
"Failed to set capabilities on file `%s' (%s)\n",
argv[0], strerror(errno));
usage();
}
}
if (cap_d) {
cap_free(cap_d);
}
}
exit(0);
}
