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APIs & Services
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CAN Bus
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Modbus
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CANopen
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Signal Composer
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Signal composer plugins demo
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Redis tsdb
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Hello World
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GPS
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Cloud Publication Binding
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Secure Storage
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Platform info binding
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Spawn Binding
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Secure Gate Oidc
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Redpak Binding
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WiFi Binding
Plugins
Plugins are C/C++ shared libraries loaded by the binding to execute some
simple routine. Routine could be on reception of a new signal or at sources
initialization time or signal subscription with the respective JSON field
onReceived
init
and getSignals
A default plugin (builtin) is provided with 2 functions:
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defaultOnReceived: set and record a new signal value and its timestamp
in the signal composer service. It simply tooks the incoming event JSON object
and search for key
value
andtimestamp
then call functionsetSignalValue
. -
setSignalValueWrap: a
lua2c
function the could be called from any LUA script to record a new signal value.
CAUTION:
timestamp
value has to be typed as uint64_t with a nanosecond precision using a realtime clock. To correctly store it in a JSON-C object use the int64 type with the according fonctions: json_object_new_int64() json_object_get_int64() json_object_set_int64() …