# ASEM(8)

## NAME

asem - Driver for UPS in ASEM PB1300

## SYNOPSIS

asem -h

asem -a UPS_NAME [OPTIONS]

Note | This man page only documents the hardware-specific features of the asem driver. For information about the core driver, see nutupsdrv(8).

## SUPPORTED HARDWARE

The asem driver supports the UPS in ASEM PB1300 embedded PCs. Likely other I2C devices from the same manufacturer will work too, since this is a "custom" charger.

Seems that there are two versions of the charger. Older one is based on Max1667, newer one is a custom solution. Both are on I2C address 0x09. To be compatible with both versions, the driver just reads bit 15 of address 0x13 which yields online/on battery status.

Battery monitor is a BQ2060 at address 0x0B.

## EXTRA ARGUMENTS

The required parameter for this driver is the I2C bus name:

port=dev-node

  On the Asem PB1300, this should be `/dev/i2c-7` for the i801 SMBUS adapter.

This driver also supports the following optional settings:

lb=num

  Set the low battery threshold to num volts.

hb=num

  Set the high battery threshold to num volts.

## INSTALLATION

This driver is specific to the Linux I2C API, and requires the libi2c-dev library and headers from lm_sensors project, or its equivalent, to compile.

Beware that the SystemIO memory used by the I2C controller is reserved by ACPI. If only a native I2C driver (e.g. `i2c_i801`, as of 3.5.X Linux kernels) is available, then you’ll need to relax the ACPI resources check. For example, you can boot with the `acpi_enforce_resources=lax` option.

## KNOWN ISSUES AND BUGS

The driver shutdown function is not implemented, so other arrangements must be made to turn off the UPS.

## AUTHOR

Giuseppe Corbelli <giuseppe.corbelli@copanitalia.com>

## SEE ALSO

### The core driver:

nutupsdrv(8)

### Internet resources:

- PB1300 specifications: http://www.asem.it/en/products/industrial-automation/box-pcs/performance/pb1300/

- BQ2060 datasheet: http://www.ti.com/lit/ds/symlink/bq2060.pdf

- The NUT (Network UPS Tools) home page: https://www.networkupstools.org/historic/v2.8.4/