rpi-ups-pico | Raspberry Pi UPS PIco control daemons

rpi-ups-pico is a C library typically used in Internet of Things (IoT), Arduino applications. rpi-ups-pico has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

picod creates the pulse train necessary for the Raspberry Pi UPS PIco to work correctly. This device expects a pulse train on GPIO pin #22 to determine if the Raspberry Pi it is attached to is booted up. This then influences whether the firmware will charge the battery - without the pulse train, the device may appear to work correctly and will even switch over to the battery if power is lost, but the battery will not be charged, rendering the device quite useless quite fast. In addition to this, the daemon monitors pin #27, which is used by the PIco to indicate that the battery level is critical and the system needs to shut down. The PIco sets this pin to HIGH during normal operation, and LOW to indicate this condition. Upon receiving this signal, the daemon calls "shutdown -h now" to try and shut down gracefully. Power will be cut shortly after, so this is necessary. pico-i2cd, on the other hand, monitors the I2C interface of the PIco and simulates an input device for the physical hardware buttons on it. These can then be bound to arbitrary actions using something like triggerhappyd, which is installed on Pis by default. It needs the uinput module to do so. It can also dump the current status of the PIco to stdout, and will do so in a format that is roughly compatible with the metrics format used by Prometheus.