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tslib触摸屏校准点击5点后出错：Illegal instruction
记录：
#./ts_calibrate
xres = 320, yres = 240
Took 19 samples...
Top left : X = 194 Y = 270
Took 16 samples...
Top right : X = 813 Y = 265
Took 13 samples...
Bot right : X = 813 Y = 747
Took 15 samples...
Bot left : X = 193 Y = 743
Took 15 samples...
Center : X = 501 Y = 505
Illegal instruction
#
用strace跟踪得到的最后几句如下：
select(4, [3], NULL, NULL, {0, 0}) = 1 (in [3], left {0, 0})
825 read(3, "@\4\0\0\"\305\t\0\3\0\1\0\375\1\0\0", 16) = 16
825 read(3, "@\4\0\0000\305\t\0\0\0\0\0\0\0\0\0", 16) = 16
read(3, "@\4\0\0\205\377\t\0\3\0\1\0\1\2\0\0", 16) = 16
825 select(4, [3], NULL, NULL, {0, 0}) = 1 (in [3], left {0, 0})
read(3, "@\4\0\0\307\377\t\0\0\0\0\0\0\0\0\0", 16) = 16
825 select(4, [3], NULL, NULL, {0, 0}) = 0 (Timeout)
read(3, "@\4\0\0\3769\n\0\3\0\30\0\0\0\0\0", 16) = 16
825 write(1, "Took 13 samples...\n", 19) = 19
825 write(1, "Middle: X = 501 Y = 505\n", 26) = 26
825 --- SIGILL (Illegal instruction) @ 0 (0) ---
825 +++ killed by SIGILL +++
tslib-1.3和tslib-1.4都出这个错误，
我若将tests/ts_calibrate.c中调用perform_calibration函数的句子注释掉，随便给个条件替换它就不会出现这个错误。
if (perform_calibration (&cal)) {
printf ("Calibration constants: ");
for (i = 0; i < 7; i++) printf("%d ", cal.a );
printf("\n");
if ((calfile = getenv("TSLIB_CALIBFILE")) != NULL) {
cal_fd = open (calfile, O_CREAT | O_RDWR);
} else {
cal_fd = open ("/etc/pointercal", O_CREAT | O_RDWR);
。。。。。。。。。。。。。。。。
不知是触摸屏驱动有问题，还是内核，还是tslib? |
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发表于 2010-1-9 14:19:35
楼主
