Hi Eric,
On 05/18/2017 05:08 PM, Eric Norum wrote:
To guard against buffer overrun issues it’s best to specify a maximum
length in the protocol entry:
read_raw
{
in “%39c";
}
Thanks for your comments.
Or, if the input terminator is set to a single ‘\r’ or ‘\n’ and the
device sends a "\r\n” you could use:
read_raw
{
in “%39[^\r\n]";
}
By the way, I have the terminator in "st.cmd" as follows:
asynOctetSetInputEos("L0", 0, "\r\n")
Thanks,
Han
On May 18, 2017, at 6:37 AM, Jeong Han Lee <[email protected]
<mailto:[email protected]>> wrote:
I have the bar code scanner, so, the string input is the arbitrary
ascii and numbers from bar codes, generated by myself, whenever I scan
it.
For example,
case 1 : user,123456789,U002C007
case 2 : ABCDEFGHIZ0123456789
case 3 : office,248795493,M01B21
case 4 : ....
case N : SUBMIT
Note that case 1..N-1 can be done without order.
The scanner has a typical RS232 connection. I wrote the very simple
IOC with asyn and Stream. It has only one record and one function in
db and proto file as follows:
--- snip snip ---
record(stringin, "$(SYSDEV)RawScanData")
{
field(DESC, "RAW Scanned data")
field(DTYP, "stream")
field( INP, "@scanner.proto read_raw $(PORT)")
field(SCAN, "I/O Intr")
field(PINI, "YES")
}
read_raw
{
in "%s";
}
--- snip snip ----------
Is this enough?
Thanks,
Han
--
Eric Norum
[email protected] <mailto:[email protected]>
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