Artesyn MITX-CORE-820 Installation and Use (July 2014) - Manual (Page 121)

Firmware
MITX-CORE-820 Installation and Use (6806800M10H) 121
6.3.8 PS2 Interface & Device Configuration
NPCE791x provides three PS/2 channels including channel 1, channel 2 and channel 3. For the
MITX-CORE-820, the channel 3 is for PS2 mouse, the channel 2 is for PS2 keyboard and the
channel 1 is not used.
6.3.9 Input Events Detection through GPIO
EC detects the following events:
 Power Switch
 AC adaptor In/Out
 Battery In/Out Event
The power switch and AC adaptor In/Out could be detected through the event table below.
However, the MITX-CORE-820 does not have a GPIO pin for the battery in/out detection. EC
uses the SMBUS polling method to detect if the battery is present.
/*
Time Base is 10mS.
A --> "PORT PIN" definition for Events
B --> Active "HIGH" or "LOW"
C --> Event debounce counter.
D --> "ACTION" of event
*/
const EVENT_DESCRIPTOR Events_Table[] =
{ /* A B C, D*/
{PORT_PIN(0, 3) | LOW, 10, 0x0000}, /* 0x00 - Power Switch Event.*/
{PORT_PIN(0, 4) | HIGH, 10, 0x9130}, /* 0x01 - AC Adaptor In/Out Event. */
{PORT_PIN(9, 1) | LOW, 10, 0x9131}, /* 0x02 - Battery In/Out Event. */
{UNUSED_PIN | LOW, 00, 0x9137}, /* 0x03 - PME Event. */
};
//#define Events_Size (sizeof(Events_Table) / sizeof(EVENT_DESCRIPTOR))