Re: Regarding an error

["Yendell, Gary \(DLSLtd, RAL, LSCI\) via Tech-talk" <tech-talk at aps.anl.gov>]

Hi,

It looks like you have two problems. This

2022/03/02 09:17:16.451 SERIALPORT -1 autoConnect could not connect: /dev/ttyACM0 Can't open  No such file or directory

suggests the given serial port is wrong or the device is not connected.

This

2022/03/02 09:17:16.955732 _main_ Can't find readable file 'arduino.proto' in 'helloWorldIOCApp/Db'

and the next few lines are because it can't find the protocol definitions. Did you create /home/pi/Apps/epics/helloWorldIOC/iocBoot/iochelloWorldIOC/helloWorldIOCApp/Db/arduino.proto with the given code snippet and does it have the correct permissions?

Cheers,

Gary

---

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of ZALA ARYANSINH via Tech-talk <tech-talk at aps.anl.gov>
Sent: 02 March 2022 04:00
To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: Regarding an error

 

Hello, 

I am currently following a project from the site mentioned below. 

https://web.archive.org/web/20180417224946/http://www.smolloy.com/2015/12/epics-serial-communication-with-arduino/

I have successfully done the previous mentioned steps. Also a point to note that i am using a virtual machine as i could not install linux on my desktop. 

The error that i am facing is:

#!../../bin/linux-x86/helloWorldIOC
## You may have to change helloWorldIOC to something else
## everywhere it appears in this file
< envPaths
epicsEnvSet("ARCH","linux-x86")
epicsEnvSet("IOC","iochelloWorldIOC")
epicsEnvSet("TOP","/home/pi/Apps/epics/helloWorldIOC")
epicsEnvSet("ASYN","/usr/local/epics/modules/asyn")
epicsEnvSet("STREAM","/usr/local/epics/modules/stream")
epicsEnvSet("EPICS_BASE","/usr/local/epics/base")
epicsEnvSet(STREAM_PROTOCOL_PATH,"helloWorldIOCApp/Db")
cd "/home/pi/Apps/epics/helloWorldIOC"
## Register all support components
dbLoadDatabase "dbd/helloWorldIOC.dbd"
helloWorldIOC_registerRecordDeviceDriver pdbbase
drvAsynSerialPortConfigure("SERIALPORT","/dev/ttyACM0",0,0,0)
2022/03/02 09:17:16.451 SERIALPORT -1 autoConnect could not connect: /dev/ttyACM0 Can't open  No such file or directory
asynSetOption("SERIALPORT",-1,"baud","115200")
asynSetOption("SERIALPORT",-1,"bits","8")
asynSetOption("SERIALPORT",-1,"parity","none")
asynSetOption("SERIALPORT",-1,"stop","1")
asynSetOption("SERIALPORT",-1,"clocal","Y")
asynSetOption("SERIALPORT",-1,"crtscts","N")
dbLoadRecords("db/arduino.db","PORT='SERIALPORT'")
## Load record instances
#dbLoadRecords("db/xxx.db","user=piHost")
cd "/home/pi/Apps/epics/helloWorldIOC/iocBoot/iochelloWorldIOC"
iocInit
Starting iocInit
############################################################################
## EPICS R3.14.12.5 $Date: Tue 2015-03-24 09:57:35 -0500$
## EPICS Base built Feb 21 2022
############################################################################
2022/03/02 09:17:16.955732 _main_ Can't find readable file 'arduino.proto' in 'helloWorldIOCApp/Db'
2022/03/02 09:17:16.955804 _main_ while reading protocol 'get_analog' for 'photo:get'
2022/03/02 09:17:16.955832 _main_ photo:get: Protocol parse error
2022/03/02 09:17:16.955858 _main_ photo:get: Record initialization failed
2022/03/02 09:17:16.955919 _main_ Can't find readable file 'arduino.proto' in 'helloWorldIOCApp/Db'
2022/03/02 09:17:16.955950 _main_ while reading protocol 'set_digital' for 'led:set'
2022/03/02 09:17:16.955979 _main_ led:set: Protocol parse error
2022/03/02 09:17:16.956005 _main_ led:set: Record initialization failed
Bad init_rec return value  PV: led:set ao: init_record

iocRun: All initialization complete
## Start any sequence programs
#seq sncxxx,"user=piHost"
epics> 2022/03/02 09:17:17.960955 scan0.5 photo:get: Record not initialised correctly
2022/03/02 09:17:18.457259 scan0.5 photo:get: Record not initialised correctly
2022/03/02 09:17:18.957321 scan0.5 photo:get: Record not initialised correctly

 

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