HMS NETWORKS CANbridge NT Lua ADK Bridge Router User Guide

C Funcons Called from Lua  

CAN@net NT/CANbridge NT Lua ADK  

Funcon 'table.copy'  

table.copy(tbl)  

Returns a deep copy of tbl.  

5.2.2. Module can  

The module canis loaded by default and can is directly available.  

Funcon 'can.dump_data'  

can.dump_data(data)  

Formats dataas byte hex dump, like:  

can.dump_data({1, 2, 3, 4}) --> [01, 02, 03, 04]  

Funcon 'can.register_msg'  

can.register_msg({  

handle = 1,  

port = 1,  

format = "std",  

ident = 0x100,  

data_as = "array",  

max_frequency = 500,  

})  

Registers a CAN/CAN-FD message for recepon via on_can.  

• handle: user dened reference to the registered message, to be used inside on_can  

• port: CAN port number (1.. 4), depending on the available CAN ports of the target device  

• formatis stdfor 11-bit, or extfor 29-bit ideners  

• ident: message idener  

• data_aspossible values:  

– "array": received message payload (data bytes) is provided as byte array (userdata)  

– "table": received message payload (data bytes) is provided as Lua table  

• max_frequency: value in msec for the "message load reducon ler" to reduce the CPU load. CAN  

messages is forwarded to Lua with the given maximum frequency. This parameter is oponal. Default value is  

0(no ler is used).  

Type "array"has beer performance and is therefore the preferred type. Type "table"is more generic and  

provides more possibilies to work with the received data.  

Funcon 'can.send'  

can.send(port, format, ident, payload)  

Sends a CAN message.  

4.02.0332.20002 Version 1.5  

Page 11 of 20  

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