Created
April 4, 2017 01:00
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ESP Car python shell
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#!/usr/bin/python -i | |
import os | |
import atexit | |
import readline | |
import rlcompleter | |
import requests | |
import time | |
DEBUG = False | |
ESP_CAR_URL = 'http://192.168.4.1' | |
DIR_LEFT = 1 | |
DIR_RIGHT = 2 | |
DIR_REVERSE = 3 | |
DIR_FORWARD = 4 | |
DIR_STOP = 5 | |
SLOW = 512 | |
MEDIUM = 768 | |
FAST = 1024 | |
## History and autocomplete | |
historyPath = os.path.expanduser("~/.espcar-history") | |
readline.parse_and_bind('tab: complete') | |
def save_history(historyPath=historyPath): | |
readline.write_history_file(historyPath) | |
if os.path.exists(historyPath): | |
readline.read_history_file(historyPath) | |
atexit.register(save_history) | |
## ESP-CAR functions | |
def move(direction, speed, ms=None): | |
params = {'dir': direction, 'speed': speed} | |
r = requests.get(ESP_CAR_URL, params=params) | |
if DEBUG: | |
print(r.url) | |
if ms is not None: | |
time.sleep(ms / 1000.0) | |
def right(speed, ms=None): | |
move(DIR_RIGHT, speed, ms) | |
def left(speed, ms=None): | |
move(DIR_LEFT, speed, ms) | |
def forward(speed, ms=None): | |
move(DIR_FORWARD, speed, ms) | |
def reverse(speed, ms=None): | |
move(DIR_REVERSE, speed, ms) | |
def stop(): | |
move(DIR_STOP, 0, None) | |
def demo(): | |
forward(FAST, 1000) | |
right(FAST, 100) | |
forward(FAST, 500) | |
forward(MEDIUM, 500) | |
forward(SLOW, 500) | |
stop() | |
reverse(FAST, 1000) | |
right(FAST, 100) | |
forward(FAST, 1000) | |
left(FAST, 1000) | |
stop() | |
print """ | |
Welcome to esp-car shell | |
Autocompletion and history are enabled | |
Functions: | |
demo() | |
forward(velocity, ms) | |
reverse(velocity, ms) | |
left(velocity, ms) | |
right(velocity, ms) | |
stop() | |
Velocity: FAST, MEDIUM, SLOW | |
""" |
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