Configure the tamper interfaces
You can use the tamper_cfg application, which is included by default in Digi Embedded Yocto, to configure the tamper interfaces by modifying the registers associated with the tamper interface (particularly TAMPERn_CFG0).
Register description
TAMPERn_CFG0
| B7 | B6 | B5 | B4 | B3 | B2 | B1 | B0 |
|---|---|---|---|---|---|---|---|
| CLR_EV_EN | PWROFF_EN | OUT_ACT_HIGH | OUT_EN | - | IN_ACT_HIGH | RECONF_EN | DET_EN |
Field description
| Field | Description |
|---|---|
|
0 DET_EN |
Enable tamper detection (1: enabled, 0: disabled) |
|
1 RECONF_EN |
Reconfigure tamper interface settings (1: allowed, 0: not allowed) |
|
2 IN_ACT_HIGH |
Set active level (tamper condition) of the tamper input (1: high, 0: low) |
|
3 - |
Reserved |
|
4 OUT_EN |
Activate the output of an IO when a tamper condition is detected (1: enabled, 0: disabled) |
|
5 OUT_ACT_HIGH |
Set output level (if enabled) when a tamper condition is detected (1: high, 0: low) |
|
6 PWROFF_EN |
Power off the device after the programmed timeout, after a tamper detection (1: enabled, 0: disabled) |
|
7 CLR_EV_EN |
Clear tamper events by writing a 0 to the tamper event register (1: enabled, 0: disabled) |
TAMPERn_CFG1
| B7 | B6 | B5 | B4 | B3 | B2 | B1 | B0 |
|---|---|---|---|---|---|---|---|
| - | - | - | - | - | INT_VREF | AVG | |
Field description
| Field | Description |
|---|---|
|
0-1 AVG |
Analog comparator averager:
|
|
1 INT_VREF |
Use internal voltage reference for analog tamper CAUTION! This affects all analog tamper detection, MCA ADCs, analog comparators, and external VRef output. |
TAMPERn_EVENT
| B7 | B6 | B5 | B4 | B3 | B2 | B1 | B0 |
|---|---|---|---|---|---|---|---|
| - | - | - | - | - | - | ACKED | SIGNALED |
PDF
