By sending a request like this:

{"type":"request", "action":"gpio.read", "args": {"pin": 7}}

I get an output like this:

"response": {
    "errors": [],
    "output": {
        "method": "read",
        "name": 7,
        "pin": 7,
        "value": 1
    }
}

You can access the value field from the context of a platypush procedure or event hook in one of the following ways:

- if ${value == 1}- if ${output['value'] == 1}- if ${context['value'] == 1}- if ${context['output']['value'] == 1}

I know that the YAML/Python hybrid syntax for procedures can be a bit counter-intuitive for cases with some extra logic like these. For cases like these, I’ve recently put together a native Python interface for defining custom hooks and procedures, so the logic can easily be rewritten as:

from platypush.procedure import procedure
from platypush.utils import run@procedure
def read_gpio(**context):
    value = run('gpio.read', pin=7).get('value')
    if value == 1:
       # Your logic here