infrared – Send and Receive Messages via IR Light

Codex infrared transmitter/receiver

class codex.infrared.Infrared(power, max_payload=16)

Create an Infrared (IR) send/receive driver.

Parameters:

• power (codex.Power) – Power object from codex module

• max_payload (int) – Maximum number of rx bytes “in-flight” or queued.

flush()

Clear and discard the receive buffer, without decoding it. Can be used after ‘send()’ to avoid receiving “loopback” data.

receive()

Get the last string (if any) received by the IR receiver

Returns:

the text received or None if nothing has been received

Return type:

str

receive_queue()

Get the queue of messages received by the IR receiver

Returns:

a list of string messages received (may be empty). Index 0 is oldest.

Return type:

list

send(message)

Send a message string over infrared.

Size limit in a single message is max_payload defined in __init__() above, but due to AGC we recommend limiting to max 4 characters per message string.

Parameters:

message (str) – the string to send

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