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testj1939: split output string in to 8 byte strings 

Currently if we send lots of bytes, test1939 output will get unreadable.
Make it easier to read by splitting output dump.
New format will looks as following example:
root@DistroKit:~ testj1939 can0:0x90 -r
80 12300: 01 23 45 67 89 ab cd ef
00008     01 23 45 67 89 ab cd ef
00010     01 23 45 67 89 ab cd ef
00018     01 23 45 67 89 ab cd ef
00020     01 23 45 67 89 ab cd ef
00028     01 23 45 67 89 ab cd ef
00030     01 23 45 67 89 ab cd ef
00038     01 23 45 67 89 ab cd ef
00040     01 23 45 67 89 ab cd ef
00048     01 23 45 67 89 ab cd ef
00050     01 23 45 67 89 ab cd ef
00058     01 23 45 67 89 ab cd ef
00060     01 23 45 67 89 ab cd ef
00068     01 23 45 67 89 ab cd ef
00070     01 23 45 67 89 ab cd ef
00078     01 23 45 67 89 ab cd ef

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
pull/122/head
Oleksij Rempel 2019-01-14 09:08:04 +01:00
parent 8991b5c47d
commit 5551de5e56
1 changed files with 8 additions and 1 deletions
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9
testj1939.c
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@ -257,12 +257,19 @@ int main(int argc, char *argv[])
error(1, errno, "sendto"); error(1, errno, "sendto");
} }
if (todo_recv) { if (todo_recv) {
int i = 0;
if (todo_names && peername.can_addr.j1939.name) if (todo_names && peername.can_addr.j1939.name)
printf("%016llx ", peername.can_addr.j1939.name); printf("%016llx ", peername.can_addr.j1939.name);
printf("%02x %05x:", peername.can_addr.j1939.addr, printf("%02x %05x:", peername.can_addr.j1939.addr,
peername.can_addr.j1939.pgn); peername.can_addr.j1939.pgn);
for (j = 0; j < ret; ++j) for (j = 0; j < ret; ++j, i++) {
if (i == 8) {
printf("\n%05x ", j);
i = 0;
}
printf(" %02x", dat[j]); printf(" %02x", dat[j]);
}
printf("\n"); printf("\n");
} }
} }