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17.4.1.6 Sensor Controller Control and Status
Several sensor controller status and debug registers are found in the AUX_SCE registers. These registers
provide means for the MCU to control the sensor controller and observe its status:
•
Hooks for development and debugging software on the sensor controller
•
Observation of internal registers and flags in the sensor controller
•
Support for starting, stopping, resetting, and single-stepping of the sensor controller
NOTE: The use of the AUX_SCE registers are only supported through drivers generated by the TI-
provided Sensor Controller Studio.
17.4.1.6.1 Single-stepping and Debugging the Sensor Controller
To do single-stepping, first suspend the sensor controller by setting the AUX_SCE:CTL.SUSPEND
register. Single-stepping is done by writing 1 to the AUX_SCE:CTL.SINGLE_STEP register. One
instruction is executed per write. Normal program execution is done by clearing the
AUX_SCE:CTL.SUSPEND register.
Full system real-time operation can be debugged by setting the AUX_SCE:CTL.DBG_FREEZE_EN bit.
This ensures that the sensor controller and AUX timers are stopped when a debugger halts the system
CPU (configured by default to do so in the MCU event fabric).
Because the clocks in the MCU domain are asynchronous to the AUX domain, multiprocessor debugging
is not perfectly real-time, but can be useful in many cases.
SWCU117C – February 2015 – Revised September 2015
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AUX – Sensor Controller with Digital and Analog Peripherals
Copyright © 2015, Texas Instruments Incorporated
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