Compilation issues with CoAP client.

[ericssonresearch]

Compilation issues with CoAP client.

[fswensson]

Hi,

If the package isn't available in your environment follow the installation instructions at https://libcoap.net/doc/install.html and change runtime/south/platform/x86/Makefile with:

ifeq ($(LIBCOAP),1)
CC_SRC_C += runtime/south/platform/x86/calvinsys/cc_libcoap_client.c
CC_CFLAGS += -DCC_USE_LIBCOAP_CLIENT=1
CC_CFLAGS += -I/usr/local/include/coap2
CC_LDFLAGS += -L/usr/local/lib -lcoap-2
#CC_CFLAGS += $(shell pkg-config --cflags-only-I libcoap-1)
#CC_LDFLAGS += $(shell pkg-config --libs-only-L libcoap-1)
#CC_LIBS += $(shell pkg-config --libs-only-l libcoap-1)
endif

The Coap support in calvin-constrained has not been tested for a while and there was some errors and the library has been updated and I have updated calvin-constrained accordingly, so update the calvin-constrained repo to get the latest changes.

To test it first compile the constrained runtime with support for Coap:

make -f runtime/south/platform/x86/Makefile LIBCOAP=1 CONFIG="runtime/south/platform/x86/cc_config_x86_coap.h"

And to test it locally on the constrained runtime:

1. Compile the calvin_scripts/temp_test.calvin script:

cscompiler calvin_scripts/temp_test.calvin
python Tools/json2msgpack.py calvin_scripts/temp_test.json > calvin_scripts/temp_test.msgpack

2. Start the constrained runtime with the temp_test script reading from a Coap source with URI coap://127.0.0.1:55654/3303/0/5700 (change it according to your environment):

./calvin_c -a '{"indexed_public": {"node_name": {"name": "constrained"}}}' -p '{"coap": {"actors": {"sensor.Temperature": "io.temperature"}, "capabilities": {"io.temperature": "coap://127.0.0.1:55654/3303/0/5700"}}}' -s calvin_scripts/temp_test.msgpack

To run it distributed with only the Coap actor on the constrained runtime:

1. Start a calvin-base runtime:

csruntime -n 127.0.0.1 --name base

2. Start a calvin-constrained runtime connecting to the base runtime.

./calvin_c -a '{"indexed_public": {"node_name": {"name": "constrained"}}}' -p '{"coap": {"actors": {"sensor.Temperature": "io.temperature"}, "capabilities": {"io.temperature": "coap://127.0.0.1:55654/3303/0/5700"}}}' -u '["calvinip://127.0.0.1:5000"]'

3. Deploy a calvin-script that migrates a sensor actor to the constrained runtime:

temp : sensor.Temperature(period=1)
snk : io.Print()

temp.centigrade > snk.token

rule device: node_attr_match(node_name={"name": "constrained"})
apply temp: device

Br Fredrik