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haiderali91 haiderali91 at protonmail.comThe previous issue is resolved. I was running cu on the /dev/tty/USB0 and at the same time i was executing osmocon command. Therefore, it was unable to access the device. After i stopped cu, and executed the command again; when i pressed power button i got this output:
got 2 bytes from modem, data looks like: 04 81 ..
got 5 bytes from modem, data looks like: 1b f6 02 00 41 ....A
got 1 bytes from modem, data looks like: 74 t
got 1 bytes from modem, data looks like: 65 e
got 1 bytes from modem, data looks like: 81 .
got 1 bytes from modem, data looks like: 1b .
got 1 bytes from modem, data looks like: 40 @
got 1 bytes from modem, data looks like: 66 f
got 1 bytes from modem, data looks like: 65 e
got 1 bytes from modem, data looks like: 41 A
got 1 bytes from modem, data looks like: 66 f
got 1 bytes from modem, data looks like: 6d m
got 1 bytes from modem, data looks like: 6f o
got 1 bytes from modem, data looks like: 72 r
However, it keeps on repeating the above output. No helloworld or any other success showing output is coming.
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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Friday, December 28, 2018 11:57 AM, haiderali91 <haiderali91 at protonmail.com> wrote:
> I tried to execute the osmocon command (sudo ./osmocon -p /dev/tty/USB0) using strace. The output is as follows:
>
> ====== strace output starts========
> execve("./osmocon", ["./osmocon", "-p", "/dev/tty/USB0"], [/* 74 vars */]) = 0
> brk(NULL) = 0x1b7c000
> access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
> access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
> open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
> fstat(3, {st_mode=S_IFREG|0644, st_size=164422, ...}) = 0
> mmap(NULL, 164422, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fb924694000
> close(3) = 0
> access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
> open("/usr/lib/x86_64-linux-gnu/libtalloc.so.2", O_RDONLY|O_CLOEXEC) = 3
> read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\35\0\0\0\0\0\0"..., 832) = 832
> fstat(3, {st_mode=S_IFREG|0644, st_size=80144, ...}) = 0
> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb924693000
> mmap(NULL, 2175248, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb924284000
> mprotect(0x7fb924297000, 2093056, PROT_NONE) = 0
> mmap(0x7fb924496000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x12000) = 0x7fb924496000
> close(3) = 0
> access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
> open("/usr/local/lib/libosmocore.so.11", O_RDONLY|O_CLOEXEC) = 3
> read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 \230\0\0\0\0\0\0"..., 832) = 832
> fstat(3, {st_mode=S_IFREG|0755, st_size=710920, ...}) = 0
> mmap(NULL, 2264912, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb92405b000
> mprotect(0x7fb924080000, 2097152, PROT_NONE) = 0
> mmap(0x7fb924280000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x25000) = 0x7fb924280000
> mmap(0x7fb924282000, 8016, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fb924282000
> close(3) = 0
> access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
> open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
> read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\t\2\0\0\0\0\0"..., 832) = 832
> fstat(3, {st_mode=S_IFREG|0755, st_size=1868984, ...}) = 0
> mmap(NULL, 3971488, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb923c91000
> mprotect(0x7fb923e51000, 2097152, PROT_NONE) = 0
> mmap(0x7fb924051000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c0000) = 0x7fb924051000
> mmap(0x7fb924057000, 14752, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fb924057000
> close(3) = 0
> access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
> open("/lib/x86_64-linux-gnu/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3
> read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\240\r\0\0\0\0\0\0"..., 832) = 832
> fstat(3, {st_mode=S_IFREG|0644, st_size=14608, ...}) = 0
> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb924692000
> mmap(NULL, 2109680, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fb923a8d000
> mprotect(0x7fb923a90000, 2093056, PROT_NONE) = 0
> mmap(0x7fb923c8f000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7fb923c8f000
> close(3) = 0
> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb924691000
> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb924690000
> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb92468f000
> arch_prctl(ARCH_SET_FS, 0x7fb924690700) = 0
> mprotect(0x7fb924051000, 16384, PROT_READ) = 0
> mprotect(0x7fb923c8f000, 4096, PROT_READ) = 0
> mprotect(0x7fb924496000, 4096, PROT_READ) = 0
> mprotect(0x7fb924280000, 4096, PROT_READ) = 0
> mprotect(0x605000, 4096, PROT_READ) = 0
> mprotect(0x7fb9246bd000, 4096, PROT_READ) = 0
> munmap(0x7fb924694000, 164422) = 0
> rt_sigaction(SIGPIPE, {SIG_IGN, [PIPE], SA_RESTORER|SA_RESTART, 0x7fb923cc64b0}, {SIG_DFL, [], 0}, 8) = 0
> rt_sigaction(SIGALRM, {SIG_IGN, [ALRM], SA_RESTORER|SA_RESTART, 0x7fb923cc64b0}, {SIG_DFL, [], 0}, 8) = 0
> rt_sigaction(SIGHUP, {0x7fb924070800, [HUP], SA_RESTORER|SA_RESTART, 0x7fb923cc64b0}, {SIG_DFL, [], 0}, 8) = 0
> rt_sigaction(SIGIO, {SIG_IGN, [IO], SA_RESTORER|SA_RESTART, 0x7fb923cc64b0}, {SIG_DFL, [], 0}, 8) = 0
> open("/dev/tty/USB0", O_RDWR|O_NOCTTY|O_NONBLOCK|O_SYNC) = -1 ENOTDIR (Not a directory)
> write(2, "Cannot open serial device /dev/t"..., 40) = 40
> exit_group(1) = ?
> +++ exited with 1 +++
>
> ====== strace output ends========
>
> The output of $ sudo stty -F /dev/ttyUSB0 is
>
> === stty output starts===
> speed 115200 baud; line = 0;
> -brkint -imaxbel
> === stty output ends===
>
> Whereas setserial command (sudo setserial -a /dev/ttyUSB0) gives this error:
>
> Cannot get serial info: Inappropriate ioctl for device
>
> What can be wrong with my PC to phone communication
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Friday, December 28, 2018 10:19 AM, haiderali91 haiderali91 at protonmail.com wrote:
>
> > Thanks Mychaela for replying in detail.
> > Yes, there is no response on executing the whole command:
> > $ sudo ./osmocon -p /dev/ttyUSB0 -m c123xor ../../target/firmware/board/compal_e88/hello_world.compalram.bin
> > However, when i execute the following:
> > $sudo ./osmocon -p /dev/ttyUSB0
> > It returns: Cannot open serial device /dev/tty/USB0
> > Trying to figure out the problem..
> > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> > On Wednesday, December 26, 2018 9:16 PM, Mychaela Falconia mychaela.falconia at gmail.com wrote:
> >
> > > > I have also attached a cu terminal by using following command.
> > > > $ sudo cu -l /dev/ttyUSB0 -s 115200
> > > > The cu terminal displays this message on pressing power button.
> > > > [garbage characters]ftmtoolerror
> > >
> > > The series of non-printable-ASCII characters followed by "ftmtoolerror"
> > > is exactly what Compal's bootloader emits on boot (the non-printable-
> > > ASCII characters constitute PROMPT1 for a possible external code
> > > download), so the fact that you are seeing these characters with your
> > > cu terminal proves that your phone is good (has an unlocked bootloader)
> > > and that your serial cable is good at least in the phone to PC
> > > direction. It is possible that your cable may be broken in the PC to
> > > phone direction, or that the headset jack connection inside the phone
> > > itself is broken in that direction - I have seen such broken headset
> > > jack connections on some busted-up phones. However, this other part
> > > of your report raises other concerns:
> > >
> > > > sudo ./osmocon -p /dev/ttyUSB0 -m c123xor ../../target/firmware/board/compal_e88/hello_world.compalram.bin
> > > > But I am not getting any response on pressing power button briefly.
> > > > The command keeps on executing without any message.
> > >
> > > Are you saying that absolutelyno messages whatsoever appear in the
> > > console window where you run osmocon as you press thr power button on
> > > the phone? If so, then you must have some other problem, as osmocon
> > > should at least report that it got PROMPT1 from the phone, even if it
> > > is not successful in talking back to the phone.
> > > M~