Problem description:
I transplanted the tslib test program ts_test.c touch screen operation program into my application program, and found that a segmentation fault occurred when the program ran to the ts_config function. The ts_test program can run on the development board, but why does my program have a segmentation fault?
1 ts = ts_open (tsdevice, 0);
2
3 if (!ts) {
4 perror (tsdevice);
5 exit(1);
6 }
7
8 if (ts_config(ts)) {
9 perror("ts_config");
10 exit(1);
11 }
Solution:
After cross-compiling tslib, some library files and header files will be generated. Copy all the generated library files and header files to the corresponding library file and header file directory of arm-linux-gcc, then re-cross-compile the program and copy it to the development board for running.
Cross compiler header file directory: arm-linux-gcc/4.5.1/arm-none-linux-gnueabi/sys-root/usr/include
Cross compiler library file directory: arm-linux--gcc/4.5.1/arm-none-linux-gnueabi/sys-root/usr/lib
For tslib transplantation, please refer to: http://www.cnblogs.com/ape-ming/p/5134542.html
Reference link: http://www.100ask.org/bbs/forum.php?mod=viewthread&tid=11267
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