use constant {
 
    DEFAULT_QUEUE       => 0x03,  # bits 1-0 (0-3)
    MAX_QUEUE           => 0x03,
 
    DEFAULT_POLARITY    => 0x00,  # bit  3
    MAX_POLARITY        => 0x08,
 
    DEFAULT_RATE        => 0x00,  # bits 7-5
    MAX_RATE            => 0xE0,
 
    DEFAULT_MODE        => 0x100, # bit  8
    MAX_MODE            => 0x100,
 
    DEFAULT_GAIN        => 0x200, # bits 11-9
    MAX_GAIN            => 0xE00,
 
    DEFAULT_CHANNEL     => 0x4000, # bits 14-12
    MAX_CHANNEL         => 0x7000,
};

##</code><code>##

use constant {
    DEBUG_CACHE                 => $ENV{DEBUG_TESLA_API_CACHE},
    API_CACHE_PERSIST           => 0,
    API_CACHE_TIMEOUT_SECONDS   => 2,
    API_TIMEOUT_RETRIES         => 3,
    AUTH_CACHE_FILE             => "$home_dir/tesla_auth_cache.json",
    ENDPOINTS_FILE              => $ENV{TESLA_API_ENDPOINTS_FILE} // dist_file('Tesla-API', 'endpoints.json'),
    OPTION_CODES_FILE           => $ENV{TESLA_API_OPTIONCODES_FILE} // dist_file('Tesla-API', 'option_codes.json'),
    TOKEN_EXPIRY_WINDOW         => 5,
    URL_API                     => 'https://owner-api.teslamotors.com/',
    URL_ENDPOINTS               => 'https://raw.githubusercontent.com/tdorssers/TeslaPy/master/teslapy/endpoints.json',
    URL_OPTION_CODES            => 'https://raw.githubusercontent.com/tdorssers/TeslaPy/master/teslapy/option_codes.json',
    URL_AUTH                    => 'https://auth.tesla.com/oauth2/v3/authorize',
    URL_TOKEN                   => 'https://auth.tesla.com/oauth2/v3/token',
    USERAGENT_STRING            => 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:98.0) Gecko/20100101 Firefox/98.0',
    USERAGENT_TIMEOUT           => 180,
};