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Denys Dmytriyenko
6d8574da9b
Simple serial tester
Usage (as explained in Readme.txt, part of ${PN}-doc package):
- Create a random file.
dd if=/dev/urandom of=binary count=1 bs=4096
- Copy the random file to both nodes.
- Start the test
receiving node:
serialcheck -d /dev/ttyS0 -f binary -m r -l 10
sending node:
serialcheck -d /dev/ttyUSB0 -f binary -m t -l 10
Start the receiving side before the sending side. This will transfer the
"binary" file 10 times and the other side will expect the file 10 times.
Once the program completes both sides should write something similar to:
| Needed 0 reads 1 writes loops 10 / 10
| cts: 0 dsr: 0 rng: 0 dcd: 0 rx: 0 tx: 40960 frame 0 ovr 0 par: 0 brk: 0 buf_ovrr: 0
and in error case the receive side:
Needed 20 reads 0 writes Oh oh, inconsistency at pos 2273 (0x8e1).
Original sample:
000008b0: 28 b2 18 c9 ec b5 2c b3 3a a1 29 b1 fc 27 20 7f (.....,.:.)..' .
000008c0: 42 f8 d5 cb d8 52 ec b5 c8 76 d3 4b d2 57 44 6a B....R...v.K.WDj
000008d0: 40 81 6a 82 27 fd 8d 50 84 70 bc 24 6b 3d 88 fd @.j.'..P.p.$k=..
000008e0: 9f ac 78 a4 76 9b f9 1c 74 2c d6 79 22 60 c5 de ..x.v...t,.y"`..
000008f0: 02 9c fb 52 21 4b 40 6f 80 69 2e 80 df 12 ba a0 ...R!K@o.i......
00000900: 75 57 d5 22 33 c0 f3 bc 94 f8 aa 22 9d 02 59 20 uW."3......"..Y
Received sample:
000008b0: 28 b2 18 c9 ec b5 2c b3 3a a1 29 b1 fc 27 20 7f (.....,.:.)..' .
000008c0: 42 f8 d5 cb d8 52 ec b5 c8 76 d3 4b d2 57 44 6a B....R...v.K.WDj
000008d0: 40 81 6a 82 27 fd 8d 50 84 70 bc 24 6b 3d 88 fd @.j.'..P.p.$k=..
000008e0: 9f 00 ac 78 a4 76 9b f9 1c 74 2c d6 79 22 60 c5 ...x.v...t,.y"`.
000008f0: de 02 9c fb 52 21 4b 40 6f 80 69 2e 80 df 12 ba ....R!K@o.i.....
00000900: a0 75 57 d5 22 33 c0 f3 bc 94 f8 aa 22 9d 02 59 .uW."3......"..Y
loops 54878 / 4294967295
cts: 0 dsr: 0 rng: 0 dcd: 0 rx: 224792017 tx: 223379456 frame 0 ovr 1 par: 0 brk: 0 buf_ovrr: 0
Signed-off-by: Denys Dmytriyenko <denys@ti.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
82 lines
2.1 KiB
Diff
82 lines
2.1 KiB
Diff
From 059d5512e840fe68e2bb37add6c9208fa9c34d15 Mon Sep 17 00:00:00 2001
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From: Sekhar Nori <nsekhar@ti.com>
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Date: Tue, 24 Feb 2015 22:16:37 +0530
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Subject: [PATCH 1/2] Add option to enable internal loopback
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Upstream-status: Pending
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---
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serialcheck.c | 23 +++++++++++++++++++++++
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1 file changed, 23 insertions(+)
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diff --git a/serialcheck.c b/serialcheck.c
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index 4f5b747..4100c37 100644
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--- a/serialcheck.c
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+++ b/serialcheck.c
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@@ -12,6 +12,8 @@
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#include <sys/ioctl.h>
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#include <linux/serial.h>
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+#define TIOCM_LOOP 0x8000
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+
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#define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
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#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
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#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
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@@ -40,6 +42,7 @@ struct g_opt {
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unsigned char hflow;
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unsigned char do_termios;
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unsigned char *cmp_buff;
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+ unsigned char loopback;
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};
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/* name, key, arg, flags, doc, group */
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@@ -51,6 +54,7 @@ static struct argp_option options[] = {
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{"mode", 'm', "M", 0, "transfer mode (d = duplex, t = send r = receive)", 0},
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{"loops", 'l', "NUM", 0, "loops to perform (0 => wait fot CTRL-C", 0},
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{"no-termios", 'n', NULL, 0, "No termios change (baud rate etc. remains unchanged)", 0},
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+ {"loopback", 'k', NULL, 0, "loopback mode", 0},
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{NULL, 0, NULL, 0, NULL, 0}
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};
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@@ -67,6 +71,7 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state)
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go->baudrate = 115200;
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go->loops = UINT_MAX;
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go->do_termios = 1;
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+ go->loopback = 0;
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break;
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case ARGP_KEY_ARG:
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ret = ARGP_ERR_UNKNOWN;
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@@ -113,6 +118,9 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state)
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} else
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go->loops = num;
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break;
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+ case 'k':
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+ go->loopback = 1;
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+ break;
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default:
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ret = ARGP_ERR_UNKNOWN;
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}
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@@ -487,6 +495,21 @@ int main(int argc, char *argv[])
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die("tcflush failed: %m\n");
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}
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+ if (opts.loopback) {
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+ unsigned int mcr;
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+
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+ ret = ioctl(fd, TIOCMGET, &mcr);
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+ if (ret < 0)
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+ die("mcr get failed: %m\n");
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+
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+ mcr |= TIOCM_LOOP;
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+
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+ ret = ioctl(fd, TIOCMSET, &mcr);
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+ if (ret < 0)
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+ die ("mcr set failed: %m\n");
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+
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+ }
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+
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ret = fcntl(fd, F_SETFL, 0);
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if (ret)
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printf("Failed to remove nonblock mode\n");
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--
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1.9.1
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