7 Addresses scanned: none
8 Datasheet: Publicly available at the Lattice website
9 http://www.latticesemi.com/
11 Author: Scott Kanowitz <scott.kanowitz@gmail.com>
16 This driver supports the Lattice POWR1220AT8 chip. The POWR1220
17 includes voltage monitoring for 14 inputs as well as trim settings
18 for output voltages and GPIOs. This driver implements the voltage
19 monitoring portion of the chip.
21 Voltages are sampled by a 12-bit ADC with a step size of 2 mV.
22 An in-line attenuator allows measurements from 0 to 6 V. The
23 attenuator is enabled or disabled depending on the setting of the
24 input's max value. The driver will enable the attenuator for any
25 value over the low measurement range maximum of 2 V.
27 The input naming convention is as follows:
45 The ADC readings are updated on request with a minimum period of 1s.