Self compiled RedPitaya web-application not loaded

[georgwild]

Hello everyone,

I am having troubles with the RedPitaya web interface in combination with my self compiled spectrum analyzer application.

The reason I am compiling the spectrum analyzer application is, that I want to write my own applications later on that use the RedPitaya web interface and I thought that this would be a good place to start.

This is the error I keep getting, so if you know what's wrong you don't need to read the whole post.



This is the nginx error log, if that is helpful.

Code: Select all

  /opt/redpitaya/www/conf/lua/online.lua: in function </opt/redpitaya/www/conf/lua/online.lua:1>, client: 192.168.1.14, server: , request: "HEAD /check_inet HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.1$
2016/09/02 09:26:13 [error] 1384#0: *64 open() "/opt/redpitaya/www/apps/favicon.ico" failed (2: No such file or directory), client: 192.168.1.14, server: , request: "GET /favicon.ico HTTP/1.1", host: "192.168.1.17"
2016/09/02 09:26:13 [error] 1384#0: *67 open() "/opt/redpitaya/www/apps/favicon.ico" failed (2: No such file or directory), client: 192.168.1.14, server: , request: "GET /favicon.ico HTTP/1.1", host: "192.168.1.17"
2016/09/02 09:34:36 [notice] 1634#0: signal process started
2016/09/02 09:36:09 [alert] 1358#0: *22 the http output chain is empty, client: 192.168.1.14, server: , request: "GET /bazaar?apps=^@_=1472808967826 HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/"
2016/09/02 09:36:14 [error] 1358#0: *59 Application not loaded, client: 192.168.1.14, server: , request: "GET /data?_=1472808973369 HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:36:14 [alert] 1358#0: *59 the http output chain is empty, client: 192.168.1.14, server: , request: "GET /data?_=1472808973369 HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:36:15 [alert] 1358#0: *60 the http output chain is empty, client: 192.168.1.14, server: , request: "GET /bazaar?start=spectrum^@HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:36:15 [alert] 1358#0: *61 the http output chain is empty, client: 192.168.1.14, server: , request: "POST /data HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:36:15 [error] 1472#0: *63 Application not loaded, client: 192.168.1.14, server: , request: "GET /data?_=1472808973370 HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:36:15 [alert] 1472#0: *63 the http output chain is empty, client: 192.168.1.14, server: , request: "GET /data?_=1472808973370 HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:45:30 [alert] 1472#0: *64 the http output chain is empty, client: 192.168.1.14, server: , request: "GET /bazaar?stop=^@HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:45:30 [alert] 1472#0: *65 the http output chain is empty, client: 192.168.1.14, server: , request: "GET /bazaar?apps=^@_=1472809529321 HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/"
2016/09/02 09:45:33 [error] 1472#0: *70 Application not loaded, client: 192.168.1.14, server: , request: "GET /data?_=1472809532674 HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:45:33 [alert] 1472#0: *70 the http output chain is empty, client: 192.168.1.14, server: , request: "GET /data?_=1472809532674 HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:45:33 [alert] 1472#0: *71 the http output chain is empty, client: 192.168.1.14, server: , request: "GET /bazaar?start=spectrum^@HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:45:33 [alert] 1472#0: *72 the http output chain is empty, client: 192.168.1.14, server: , request: "POST /data HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:45:34 [error] 1541#0: *74 Application not loaded, client: 192.168.1.14, server: , request: "GET /data?_=1472809532675 HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"
2016/09/02 09:45:34 [alert] 1541#0: *74 the http output chain is empty, client: 192.168.1.14, server: , request: "GET /data?_=1472809532675 HTTP/1.1", host: "192.168.1.17", referrer: "http://192.168.1.17/spectrum/?type=run"

I think it has something to do with the 'controllerhf.so' not being loaded by the webserver.

So here is exactly what I am doing:

• Clone the RedPitaya Repository to the RedPitaya (master branch)
• Go to the spectrum app source code and compile it using 'make all'. I think there is nothing wrong with the output.

  Code: Select all

  make -C src
  make[1]: Entering directory '/root/RedPitaya/apps-free/spectrum/src'
  make -C ./external/kiss_fft
  make[2]: Entering directory '/root/RedPitaya/apps-free/spectrum/src/external/kiss_fft'
  gcc -DVERSION=0.94-0 -DREVISION=devbuild -Wall -Werror -g -fPIC -I./external/kiss_fft -I/include -I/include/api2 -I/include/apiApp -I/rp_sdk -Wall -Werror -g -fPIC   -c -o kiss_fft.o kiss_fft.c
  gcc -DVERSION=0.94-0 -DREVISION=devbuild -Wall -Werror -g -fPIC -I./external/kiss_fft -I/include -I/include/api2 -I/include/apiApp -I/rp_sdk -Wall -Werror -g -fPIC   -c -o kiss_fftr.o kiss_fftr.c
  make[2]: Leaving directory '/root/RedPitaya/apps-free/spectrum/src/external/kiss_fft'
  gcc -DVERSION=0.94-0 -DREVISION=devbuild -Wall -Werror -g -fPIC -I./external/kiss_fft -I/include -I/include/api2 -I/include/apiApp -I/rp_sdk   -c -o main.o main.c
  gcc -DVERSION=0.94-0 -DREVISION=devbuild -Wall -Werror -g -fPIC -I./external/kiss_fft -I/include -I/include/api2 -I/include/apiApp -I/rp_sdk   -c -o fpga.o fpga.c
  gcc -DVERSION=0.94-0 -DREVISION=devbuild -Wall -Werror -g -fPIC -I./external/kiss_fft -I/include -I/include/api2 -I/include/apiApp -I/rp_sdk   -c -o worker.o worker.c
  gcc -DVERSION=0.94-0 -DREVISION=devbuild -Wall -Werror -g -fPIC -I./external/kiss_fft -I/include -I/include/api2 -I/include/apiApp -I/rp_sdk   -c -o dsp.o dsp.c
  gcc -DVERSION=0.94-0 -DREVISION=devbuild -Wall -Werror -g -fPIC -I./external/kiss_fft -I/include -I/include/api2 -I/include/apiApp -I/rp_sdk   -c -o waterfall.o waterfall.c
  gcc -o ../controllerhf.so main.o fpga.o worker.o dsp.o waterfall.o ./external/kiss_fft/kiss_fft.o ./external/kiss_fft/kiss_fftr.o -DVERSION=0.94-0 -DREVISION=devbuild -Wall -Werror -g -fPIC -I./external/kiss_fft -I/include -I/include/api2 -I/include/apiApp -I/rp_sdk -shared -L/lib -L/rp_sdk
  make[1]: Leaving directory '/root/RedPitaya/apps-free/spectrum/src'
  

• Make the RedPitaya filesystem writeable with 'rw' and copy the spectrum folder to '/opt/redpitaya/www/apps'
• Add four lines in the 'idfile.id' inside the directory where also the spectrum app-folder is. I do this so that the app shows up in the web interface.

  Code: Select all

                  {
                          "app_id" : "spectrum",
                          "app_name" : "Spectrum Analyzer",
                  }
  

• Reboot the RedPitaya

Edit: Add the image on imgur. Attachment is not working.

[Nils Roos]

Hi,

there are a couple of dependency problems with the controllerhf.so of the spectrum app, but they don't show up during compilation because it is a shared object. These problems are:

• In waterfall.c there is an inline function "__rp_spectr_wf_limit". Apparently it is not a good idea to inline functions that start with double underscore, the compiler removes them. Simply get rid of the "inline" (maybe replace it with "static").
• Missing dependencies for libm, libpthread, libjpeg: add a line "LIBS += -lm -lpthread -ljpeg" to spectrum/src/Makefile after the other LIBS lines.

When you rebuild the controller with these changes, the app functions normally. For future app-problems of this kind, you can find helpful information in /var/log/redpitaya_nginx/debug.log .

ps: there is nothing wrong with the attachment, but it is only visible to people who are logged in (I could see it before you put the imgur link in).