Communication Functions

send_msg

Send a message via router to another controller.

Note: Word 0 of each messages buffer is the msg size, which is the number of words without the msg size word itself!

• address is the number of the destination block
• msg is message (array/string)

send_msg(address, msg)

recv_msg

Receive a message via the local router. Function returns the sender address or 0.

• buff is for the message
• size is the size of buff in words

recv_msg(buff, size)

publish_msg

Send a message to the broker.

Note: Word 0 of each messages buffer is the msg size, which is the number of words without the msg size word itself!

• address is the number of the broker

• msg is message array with size, topic, and additional data. like:

  var msg[] = {size, topic, data, ...};

publish_msg(address, msg)

fetch_msg

Read a message from the broker. Function returns 1 (success) or 0 (no msg).

• address is the number of the broker
• topic is the message topic number
• buff is a buffer, used for the received message
• size is the size of buff in words

fetch_msg(address, topic, buff, size)

request_msg

Request a message from the broker. The response is received asynchron via 'recv_msg'.

The broker only sends the response when it has received a new message.

Function returns 1 (success) or 0 (error).

• address is the number of the broker
• topic is the message topic number

request_msg(address, topic)