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Hello,

First, thank you for your program. However, when I try to run your example with "make test && ./SimpleExample.native" (after choosing the good tty), I got the error:

./SimpleExample.native 
*** Error in `./SimpleExample.native': free(): invalid pointer: 0x000000000107a148 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x70bcb)[0x7ff6775d7bcb]
/lib/x86_64-linux-gnu/libc.so.6(+0x76fa6)[0x7ff6775ddfa6]
/lib/x86_64-linux-gnu/libc.so.6(+0x7779e)[0x7ff6775de79e]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9_M_assignERKS4_+0x87)[0x7ff678141547]
./SimpleExample.native[0x429ba0]
./SimpleExample.native[0x428917]
./SimpleExample.native[0x40702d]
./SimpleExample.native[0x405210]
./SimpleExample.native[0x405317]
./SimpleExample.native[0x402959]
./SimpleExample.native[0x440186]
./SimpleExample.native[0x44079d]
./SimpleExample.native[0x40277c]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x7ff6775872b1]
./SimpleExample.native[0x4027ba]
======= Memory map: ========
00400000-00457000 r-xp 00000000 fe:01 25069340                           /home/leo/Informatique/Programmation/Arduino/Ocaml/firmata/_build/examples/SimpleExample.native
00656000-00657000 r--p 00056000 fe:01 25069340                           /home/leo/Informatique/Programmation/Arduino/Ocaml/firmata/_build/examples/SimpleExample.native
00657000-0066e000 rw-p 00057000 fe:01 25069340                           /home/leo/Informatique/Programmation/Arduino/Ocaml/firmata/_build/examples/SimpleExample.native
0066e000-0067b000 rw-p 00000000 00:00 0 
0101c000-0107b000 rw-p 00000000 00:00 0                                  [heap]
7ff670000000-7ff670021000 rw-p 00000000 00:00 0 
7ff670021000-7ff674000000 ---p 00000000 00:00 0 
7ff676fa3000-7ff677567000 rw-p 00000000 00:00 0 
7ff677567000-7ff6776fc000 r-xp 00000000 fe:00 792114                     /lib/x86_64-linux-gnu/libc-2.24.so
7ff6776fc000-7ff6778fb000 ---p 00195000 fe:00 792114                     /lib/x86_64-linux-gnu/libc-2.24.so
7ff6778fb000-7ff6778ff000 r--p 00194000 fe:00 792114                     /lib/x86_64-linux-gnu/libc-2.24.so
7ff6778ff000-7ff677901000 rw-p 00198000 fe:00 792114                     /lib/x86_64-linux-gnu/libc-2.24.so
7ff677901000-7ff677905000 rw-p 00000000 00:00 0 
7ff677905000-7ff67791b000 r-xp 00000000 fe:00 786606                     /lib/x86_64-linux-gnu/libgcc_s.so.1
7ff67791b000-7ff677b1a000 ---p 00016000 fe:00 786606                     /lib/x86_64-linux-gnu/libgcc_s.so.1
7ff677b1a000-7ff677b1b000 r--p 00015000 fe:00 786606                     /lib/x86_64-linux-gnu/libgcc_s.so.1
7ff677b1b000-7ff677b1c000 rw-p 00016000 fe:00 786606                     /lib/x86_64-linux-gnu/libgcc_s.so.1
7ff677b1c000-7ff677b1e000 r-xp 00000000 fe:00 792122                     /lib/x86_64-linux-gnu/libdl-2.24.so
7ff677b1e000-7ff677d1e000 ---p 00002000 fe:00 792122                     /lib/x86_64-linux-gnu/libdl-2.24.so
7ff677d1e000-7ff677d1f000 r--p 00002000 fe:00 792122                     /lib/x86_64-linux-gnu/libdl-2.24.so
7ff677d1f000-7ff677d20000 rw-p 00003000 fe:00 792122                     /lib/x86_64-linux-gnu/libdl-2.24.so
7ff677d20000-7ff677e23000 r-xp 00000000 fe:00 792124                     /lib/x86_64-linux-gnu/libm-2.24.so
7ff677e23000-7ff678022000 ---p 00103000 fe:00 792124                     /lib/x86_64-linux-gnu/libm-2.24.so
7ff678022000-7ff678023000 r--p 00102000 fe:00 792124                     /lib/x86_64-linux-gnu/libm-2.24.so
7ff678023000-7ff678024000 rw-p 00103000 fe:00 792124                     /lib/x86_64-linux-gnu/libm-2.24.so
7ff678024000-7ff678195000 r-xp 00000000 fe:00 1180732                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7ff678195000-7ff678395000 ---p 00171000 fe:00 1180732                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7ff678395000-7ff67839f000 r--p 00171000 fe:00 1180732                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7ff67839f000-7ff6783a1000 rw-p 0017b000 fe:00 1180732                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7ff6783a1000-7ff6783a5000 rw-p 00000000 00:00 0 
7ff6783a5000-7ff6783c8000 r-xp 00000000 fe:00 787092                     /lib/x86_64-linux-gnu/ld-2.24.so
7ff6784bb000-7ff678582000 rw-p 00000000 00:00 0 
7ff6785c3000-7ff6785c7000 rw-p 00000000 00:00 0 
7ff6785c7000-7ff6785c8000 r--p 00022000 fe:00 787092                     /lib/x86_64-linux-gnu/ld-2.24.so
7ff6785c8000-7ff6785c9000 rw-p 00023000 fe:00 787092                     /lib/x86_64-linux-gnu/ld-2.24.so
7ff6785c9000-7ff6785ca000 rw-p 00000000 00:00 0 
7fff648b7000-7fff648d8000 rw-p 00000000 00:00 0                          [stack]
7fff648f3000-7fff648f5000 r--p 00000000 00:00 0                          [vvar]
7fff648f5000-7fff648f7000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
Abandon

Do you know why ?

Thank you !

Seems like my last commit produces the error. You can revert the last commit by checking out this commit ac2e154dd703580aaf5e586126c9cc28a369167f . Meanwhile I can fix the error.

Thanks for the report.

I think I have fixed the error in b569d3e2b910ba5bcae4fd588d342596596d1070. It works for me without issues.

Let me know if if it's fixed or you still have problems.

Thanks!

Thank you for your update. Now I have a segfault if I give a wrong serial port. Maybe a clearer explanation would be interesting...

And I have one more question (which is a bit out of topic) : where could I find an equivalent between the pin number here: "http://letsmakerobots.com/files/field_primary_image/NanoAnalogPinChanges.resized.jpg" and in the print information display ?

Thank you !