Add new features to Toshiba's TMPM3H6

[ghost]

Description

Add new features to Toshiba's TMPM3H6

• SPISlave
• SPI_ASYNCH
• SERIAL_FC
• I2C_ASYNCH
• RTC

Tested with all 3 toolchains and attached test logs:
M3H6_ARM_TestResults.txt
M3H6_GCC_ARM_TestResults.txt
M3H6_IAR_TestResults.txt

Pull request type

[ ] Fix
[ ] Refactor
[x] Target update
[ ] Functionality change
[ ] Docs update
[ ] Test update
[ ] Breaking change

Reviewers

Release Notes

[ciarmcom]

@ganesh-ramachandran, thank you for your changes.
@ARMmbed/mbed-os-maintainers please review.

[0xc0170]

I'll review this one on Monday, sorry for the delay

[0xc0170]

does this work? if target is reseted, won't RTC stay alive - means flag here would state it is not enabled by RTC is running? Shouldn't we rather check peripheral for status?

[ghost]

@0xc0170, RTC status register is not in Toshiba MCUs. However, verified with RTC initialized status.

[0xc0170]

I see, so no way to check RTC is already running - this is mainly after target resets itself , no need to reinit RTC (and loose time) ? or I've missed something

[0xc0170]

Looks fine just one RTC flag in question

Sorry for the delay, was lost in notifications after vacation and release 😢

[0xc0170]

CI started meanwhile

[mbed-ci]

Test run: SUCCESS

Summary: 11 of 11 test jobs passed
Build number : 1
Build artifacts

[0xc0170]

I'll mark this as ready for merge, just one last question (same as above): if target is reseted, is RTC reconfigured - do we loose the time stored? We had this problem previously in some targets (using variable initialized that is wiped everytime startup runs).

[ghost]

I'll mark this as ready for merge, just one last question (same as above): if target is reseted, is RTC reconfigured - do we loose the time stored? We had this problem previously in some targets (using variable initialized that is wiped everytime startup runs).

@0xc0170, Yes, if target is reseted we will loose the time, since we do not have a RTC status register. Yes, we also checked few other targets which also uses variable.

[0xc0170]

OK understood, the limitation of RTC. Still hard to believe there is no way for checking RTC has been initialized ,

good to go then