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README
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Simple serial tester
~~~~~~~~~~~~~~~~~~~~~~
Usage:
- 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.$k=..
000008e0: 9f ac 78 a4 76 9b f9 1c 74 2c d6 79 22 60 c5 de ..x.v...t,.y"`..
000008f0: 02 9c fb 52 21 4b 40 6f 80 69 2e 80 df 12 ba a0 [email protected]......
00000900: 75 57 d5 22 33 c0 f3 bc 94 f8 aa 22 9d 02 59 20 uW."3......"..Y
Received sample:
000008b0: 28 b2 18 c9 ec b5 2c b3 3a a1 29 b1 fc 27 20 7f (.....,.:.)..' .
000008c0: 42 f8 d5 cb d8 52 ec b5 c8 76 d3 4b d2 57 44 6a B....R...v.K.WDj
000008d0: 40 81 6a 82 27 fd 8d 50 84 70 bc 24 6b 3d 88 fd @.j.'..P.p.$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 [email protected].....
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
Problems:
~~~~~~~~~
- Option -m d for duplex does not work
It sends data before the receiver is ready. As a workaround invoke it
twice (r and t mode).
- The sender does not notice that it is no longer synchronized.