API of Board RDF022

Usage

Download this repository and put rdf022.py along with your_prog.py, just like sample.py.

LCM

To show messages on the LCM, simply assign them to lcm.messages before lcm.refresh().

import rdf022


msgs = ('Hello', 'World')

lcm = rdf022.get_lcm()
lcm.messages = msgs
lcm.refresh()

Output:

Hello
World

N.B.

• get_lcm().messages should be an iterable object and contains only 2 items.

• get_lcm() returns an instance of Singleton, so lcm_1 and lcm_2 in the following block are the same:

lcm_1 = rdf022.get_lcm()
lcm_2 = rdf022.get_lcm()

• The library is multiple-access safed, in case you have a multithreaded process.

Brightness control

To show messages on the LCM, simply assign them to lcm.messages before lcm.refresh().

import rdf022
import time

lcm = rdf022.get_lcm()

def sparkle():
    while True:
        for i in range(lcm.brightness_depth):
            lcm.decrease_brightness()
            time.sleep(0.1)
        for i in range(lcm.brightness_depth):
            lcm.increase_brightness()
            time.sleep(0.1)

import threading
threading.Thread(target=sparkle).start()

N.B.

• decrease_brightness() should be decrease brightness slowly.

• increase_brightness should be increase brightness slowly.

• The library is multiple-access safed, in case you have a multithreaded process.