| Kernel driver adt7410 |
| ===================== |
| |
| Supported chips: |
| * Analog Devices ADT7410 |
| Prefix: 'adt7410' |
| Addresses scanned: I2C 0x48 - 0x4B |
| Datasheet: Publicly available at the Analog Devices website |
| http://www.analog.com/static/imported-files/data_sheets/ADT7410.pdf |
| |
| Author: Hartmut Knaack <knaack.h@gmx.de> |
| |
| Description |
| ----------- |
| |
| The ADT7410 is a temperature sensor with rated temperature range of -55°C to |
| +150°C. It has a high accuracy of +/-0.5°C and can be operated at a resolution |
| of 13 bits (0.0625°C) or 16 bits (0.0078°C). The sensor provides an INT pin to |
| indicate that a minimum or maximum temperature set point has been exceeded, as |
| well as a critical temperature (CT) pin to indicate that the critical |
| temperature set point has been exceeded. Both pins can be set up with a common |
| hysteresis of 0°C - 15°C and a fault queue, ranging from 1 to 4 events. Both |
| pins can individually set to be active-low or active-high, while the whole |
| device can either run in comparator mode or interrupt mode. The ADT7410 |
| supports continous temperature sampling, as well as sampling one temperature |
| value per second or even justget one sample on demand for power saving. |
| Besides, it can completely power down its ADC, if power management is |
| required. |
| |
| Configuration Notes |
| ------------------- |
| |
| Since the device uses one hysteresis value, which is an offset to minimum, |
| maximum and critical temperature, it can only be set for temp#_max_hyst. |
| However, temp#_min_hyst and temp#_crit_hyst show their corresponding |
| hysteresis. |
| The device is set to 16 bit resolution and comparator mode. |
| |
| sysfs-Interface |
| --------------- |
| |
| temp#_input - temperature input |
| temp#_min - temperature minimum setpoint |
| temp#_max - temperature maximum setpoint |
| temp#_crit - critical temperature setpoint |
| temp#_min_hyst - hysteresis for temperature minimum (read-only) |
| temp#_max_hyst - hysteresis for temperature maximum (read/write) |
| temp#_crit_hyst - hysteresis for critical temperature (read-only) |
| temp#_min_alarm - temperature minimum alarm flag |
| temp#_max_alarm - temperature maximum alarm flag |
| temp#_crit_alarm - critical temperature alarm flag |
