Nucleo F401: LSE rtc init failure

[0xc0170]

Description

Locally reproduced the error we are seeing in CI today:

// 2 commands run to execute the test
mbed test -m NUCLEO_F401RE -t ARM -n tests-mbed_hal-sleep -DMBED_MEM_TRACING_ENABLED=1 -DMBED_HEAP_STATS_ENABLED=1 --compile
mbedgt -n tests-mbed_hal-sleep -v -V

// results

[1531398737.41][CONN][RXD] ++ MbedOS Error Info ++
[1531398737.47][CONN][RXD] Error Status: 0x80FF0100 Code: 256 Module: 255
[1531398737.51][CONN][RXD] Error Message: Fatal Run-time error
[1531398737.53][CONN][RXD] Location: 0x8007A17
[1531398737.54][CONN][RXD] Error Value: 0x0
[1531398737.65][CONN][RXD] Current Thread: Id: 0x20002400 Entry: 0x800A0ED StackSize: 0x1000 StackMem: 0x20001400 SP: 0x20002328
[1531398737.67][CONN][RXD] -- MbedOS Error Info --
[1531398737.71][CONN][RXD] Cannot initialize RTC with LSE

Got F401RE, no changes to master (using e1df16e84 - (HEAD -> master, upstream/master) Merge pull request #7365 from jeromecoutant/PR_RTC_SHADOW (10 hours ago) - latest master

I tested also L476 nucleo board - all passing. From the CI logs, nucleo F401 and F7 are affected. The RTC shadow PR however passed CI (#7365)

@ARMmbed/team-st-mcd Please review

Issue request type

[ ] Question
[ ] Enhancement
[x] Bug

[0xc0170]

At the moment, latest test run that failures are here #7481 (comment).

[0xc0170]

+-------------------+---------------+----------------------+-----------------------------------------------+--------+--------+--------+--------------------+
| target            | platform_name | test suite           | test case                                     | passed | failed | result | elapsed_time (sec) |
+-------------------+---------------+----------------------+-----------------------------------------------+--------+--------+--------+--------------------+
| NUCLEO_F429ZI-ARM | NUCLEO_F429ZI | tests-mbed_hal-sleep | deep-sleep - high-speed clocks are turned off | 1      | 0      | OK     | 0.11               |
| NUCLEO_F429ZI-ARM | NUCLEO_F429ZI | tests-mbed_hal-sleep | deep-sleep - source of wake-up - lp ticker    | 1      | 0      | OK     | 1.0                |
| NUCLEO_F429ZI-ARM | NUCLEO_F429ZI | tests-mbed_hal-sleep | sleep - source of wake-up - us ticker         | 1      | 0      | OK     | 0.07               |
+-------------------+---------------+----------------------+-----------------------------------------------+--------+--------+--------+--------------------+
mbedgt: test case results: 3 OK
mbedgt: completed in 17.40 sec

[0xc0170]

#7487 (comment) - latest test result that is green

[ciarmcom]

ARM Internal Ref: MBOTRIAGE-1214

[jeromecoutant]

Hi

I couldn't reproduce the issue...

rm -rf BUILD
git checkout origin/master
mbed test -m NUCLEO_F401RE -t ARM -n tests-mbed_hal-sleep -DMBED_MEM_TRACING_ENABLED=1 -DMBED_HEAP_STATS_ENABLED=1 --compile
mbedgt -n tests-mbed_hal-sleep -v -V

target	platform_name	test suite	test case	passed	failed	result	elapsed_time (sec)
NUCLEO_F401RE-ARM	NUCLEO_F401RE	tests-mbed_hal-sleep	deep-sleep - high-speed clocks are turned off	1	0	OK	0.12
NUCLEO_F401RE-ARM	NUCLEO_F401RE	tests-mbed_hal-sleep	deep-sleep - source of wake-up - lp ticker	1	0	OK	1.01
NUCLEO_F401RE-ARM	NUCLEO_F401RE	tests-mbed_hal-sleep	sleep - source of wake-up - us ticker	1	0	OK	0.06

[0xc0170]

As targets in CI do not neither , I am closing this.

@jeromecoutant Thanks for testing!