Update the LowPowerTickerWrapper class to handle rather than ignore
early low power ticker interrupts. This ensures that devices don't get
stuck in sleep due to a ignored early low power ticker interrupt.
Make the following changes:
-Allow a vector specific ARM MPU driver by defining MBED_MPU_CUSTOM
-Allow ROM address to be configured for ARMv7-M devices by
setting the define MBED_MPU_ROM_END
-Add ROM write protection
-Add new functions and lock
-enable at boot
-disable during flash programming
Create a dedicated MPU directory for standard Arm MPU implementations
in preparation for the Arm v8m MPU. Replace MBED_MPU_ENABLED with
DEVICE_MPU to align with the porting layer of other HAL APIs.
Update the LowPowerTickerWrapper class logic to stop using its internal
Timeout object for scheduling LP ticker interrupts after the wrapper has
been suspended.
Fixes#8278
CRC used in LittleFS is Reversed ANSI, hence new polynomial added.
Reversed polynomials perform shift in reverse direction of standard
polynomial, and we do not have option to notify reverse shift to hardware.
Hence this option is available in software only.
Adding new QSPI HAL header file. This should help to use memory-maped devices
as memories, graphical displays.
The API consist of few functions, most important are read/write/write_command functions.
The command format is:
```
----------------------------------------------
| Instruction | Address | Alt | Dummy | Data |
----------------------------------------------
```
We define only synch API at the moment.
Update the low power ticker wrapper code so it does not violate any
properties of the ticker specification. In specific this patch fixes
the following:
- Prevent spurious interrupts
- Fire interrupt only when the ticker times increments to or past the
value set by ticker_set_interrupt
- Disable interrupts when ticker_init is called
When the define LPTICKER_DELAY_TICKS is set deep sleep can be randomly
disallowed when using the low power ticker. This is because a Timer
object, which locks deep sleep, is used to protect from back-to-back
writes to lp tickers which can't support that. This causes tests which
assert that deep sleep is allowed to intermittently fail.
To fix this intermittent failure this patch adds the function
sleep_manager_can_deep_sleep_test_check() which checks if deep sleep
is allowed over a duration. It updates all the tests to use
sleep_manager_can_deep_sleep_test_check() rather
than sleep_manager_can_deep_sleep() so the tests work even if deep
sleep is spuriously blocked.
Kevin Bracey
Martin Kojtal
Russ Butler
Oren Cohen
Amanda Butler
David Saada
Cruz Monrreal
Filip Jagodzinski
ccli8
Deepika
Thomas Kemmer
Maciej Bocianski
Martin Kojtal
Senthil Ramakrishnan