RTOS/MSP432P401R: After entering deep sleep mode, the Seconds module of MSP432P401R SDK will be running ?

Gilbert

Expert 1105 points

Part Number: MSP432P401R

Tool/software: TI-RTOS

Hi all,

1. After entering deep sleep mode, the Seconds module of MSP432P401R SDK will be running ?

2. Which clock does the Seconds module source from?

SDK: simplelink_msp432p4_sdk_2_20_00_12

CCS: Version: 8.1.0.00011

Best Regards,

Gilbert

over 7 years ago

0 Bob Landers over 7 years ago

TI__Expert 8510 points

The TI-RTOS Seconds module uses the RTC (Real-Time-Clock) peripheral. And yes, the RTC will continue to run in LPM3, (deep sleep).

-Bob L.

0 Gilbert over 7 years ago in reply to Bob Landers

Expert 1105 points

Hi Bob,

1. Will the LFXTCLK continue to run in LPM3, (deep sleep) ?
2. How to change BCLK source from REFCLK to LFXTCLK in MSP432_SDK?

Best Regards,
Gilbert

0 Bob Landers over 7 years ago in reply to Gilbert

TI__Expert 8510 points

Gilbert,

1. Yes, LFXT is active in LPM3 (see MSP432P4 Technical Reference Manual, Section 8.4.3.1)

2. See this post on setting up Clock system in TI Drivers.

The short answer for this is to modify the performance level definitions as defined in c:\ti\simplelink_msp432p4_sdk<vers#>\source\ti\drivers\power\PowerMSP432.c
The PowerMSP432.h file has instructions on doing this (search for "defining a performance level")
More information on the APIs can be found in SimpleLink SDK Power Management: MSP432... User's guide

-Bob L.

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RTOS/MSP432P401R: After entering deep sleep mode, the Seconds module of MSP432P401R SDK will be running ?