caf_rpi_nap

Caf.js

Co-design permanent, active, stateful, reliable cloud proxies with your web app or gadget.

See https://www.cafjs.com

Raspberry Pi Library for Power Management

This library shutdowns and restarts after certain time a RPi+WittyPi combo.

It runs in the device not in the cloud.

API

lib/proxy_iot_nap.js

Configuration Example

iot.json

{
        "module": "caf_rpi_nap#plug_iot",
        "name": "nap",
        "description": "Access to shutdown/delayed restart for this device.",
        "env" : {
            "maxRetries" : "$._.env.maxRetries",
            "retryDelay" : "$._.env.retryDelay",
            "deviceRTC" : "process.env.DEVICE_RTC||/dev/i2c-1",
            "deviceAddress" : "process.env.DEVICE_ADDRESS||0x68",
            "allowMock" : "process.env.ALLOW_MOCK||true",
            "shutdownCommand" : "process.env.SHUTDOWN_COMMAND||shutdown.sh'
        },
        "components" : [
            {
                "module": "caf_rpi_nap#proxy_iot",
                "name": "proxy",
                "description": "Proxy to shutdown/delayed restart service",
                "env" : {
                }
            }
        ]
}

where deviceRTC and deviceAddress are associated with the i2c interface that the WittyPi exposes. allowMock simulates shutdown and restart with error messages. Mocking only changes behavior when there is no i2c device, avoiding component error in that case.