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9150-0125-01 R-4
6.5
NORDIC PROCESSOR UNUSED PINS
Due to its sensitivity to IR light, the Nordic processor is covered with opaque, light-blocking epoxy.
Tests have shown that if unused pins on the Nordic processor are set as input without internal pulldowns enabled, the epoxy
will cause higher current draw in low power mode.
It is strongly advised to not leave unused Nordic pins at high impedance (input without internal pulldown).
6.6
OBSTRUCTIONS
For best performance the ST150M should have an unobstructed view of the sky, either outdoors or in a glass-enclosed area
such as a vehicle dashboard.
7 APPLICATION PROGRAMMING INTERFACE (API)
7.1
AT COMMANDS
AT commands are list of commands giving accesses to APIs that can configure runtime settings on the device.
All end users accessing the device will leverage APIs at the Unified API level. The ST150 Security Library is a
UAPI level library intended to prevent access to device configuration APIs via external access.
7.1.1
ST150 Device Configuration
ST150 device supports different type of AT commands to configure all supported software components over the
NORDIC UART SERVICE (NUS), UART and Configuration service interface.
To access the AT command list and corresponding authentication levels details please refer to document:
8550-0002-01
7.1.2
Configuration Security
The Configuration security settings include individual settings via three supported interfaces. A user can set
the settings such that the module never allows access to auth commands, does so temporarily, or does so all
the time. An AT auth command is issued through the command "AT+SECAUTH={1/0}, {passphrase}, where the
first parameter is set to 1 if auth permissions are being requested, and a non-null passphrase must be set on
the device if enabling auth. This command is only required if the policy is not set to AUTH_PERMANENT.
For more details on security refer to Section 3 the Globalstar ST150 Unified API Reference.
Query state of authentication using AT+SECAUTH?
Security policy types are supported as described below:
•
AUTH_BASIC - 0
AUTH_BASIC never allows any elevated auth permissions.
•
AUTH_PERMANENT - 1
AUTH_PERMANENT always allows any commands that requires auth privileges to be passed through.
•
AUTH_TEMPORARY - 2
AUTH_TEMPORARY allows the auth command to set elevated auth permissions for the current thread, which
will remain in effect until cleared by a subsequent auth command. This state will not persist across a device
reset.
•
AUTH_TIMEOUT - 3
AUTH_TIMEOUT allows the auth command to set elevated auth permissions for the current thread, which
will remain in effect until the elapsed seconds denoted by the applicable timeout setting occur.
ST150M User Manual
Globalstar ST150 Unified API Reference
Confidential & Proprietary Information
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