How you write and ersae the flash on the NRF52 changes depending on
whether the SoftDevice is enabled or not.
This change does a runtime check before erasing and writing, and
then chooses the correct function to perform the action.
Rather than tracking all in-flight blocks blocks during a lookahead,
littlefs uses an ack scheme to mark the first allocated block that
hasn't reached the disk yet. littlefs assumes all blocks since the
last ack are bad or in-flight, and uses this to know when it's out
of storage.
However, these unacked allocations were still being populated in the
lookahead buffer. If the whole block device fits in the lookahead
buffer, _and_ littlefs managed to scan around the whole storage while
an unacked block was still in-flight, it would assume the block was
free and misallocate it.
The fix is to only fill the lookahead buffer up to the last ack.
The internal free structure was restructured to simplify the runtime
calculation of lookahead size.
Delta calculation from lp_ticker_set_interrupt() function:
delta_us = timestamp > now_us ? timestamp - now_us : (uint32_t)((uint64_t)timestamp + 0xFFFFFFFF - now_us);
Lets assume that timestam == now_us.
Expected delta value should be 0 and in this current version is 0xFFFFFFFF.
The following condition:
timestamp > now_us
should have the following form:
timestamp >= now_us
Additionally modified us ticker driver to provide the same logic.
In the 'Testing accuracy of equeue semaphore' test case result is printed out in each loop iteration.
Since debug prints should not exist in the final test version I suggest to print information only in case of failure.
Additionally time needed to print single info is equal to ~25 ms (K64F/GCC_ARM). The while loop is designed to execute until 20000 ms elapses, so this print has also impact on number of times the loop is executed (number of semaphore accuracy checks).
The rework includes the following:
1. Remove ticker overflow handling because upper layer (mbed_ticker_api.c) has done with it.
This makes us_ticker/lp_ticker implementation more succinct and avoids potential error.
2. Refine timer register access with low-power clock source
Systick handler switch to secure/nonsecure issues addressed:
1. Switch to secure/nonsecure context save/restore is based on 6th bit in
LR register, correct the bug (R7 instead of LR was used for decision)
2. Prevent R7 from being corrupted in Sys_ContextSave
3. Branch when non-secure rather than secure
CMSIS repo does not support pre-processor defines, hence multiple assembly
files are added for secure/non-secure and floating point tools.
Mbed OS tools support assembly file pre-processing, but the build system
does not support multiple assembly files for each target, hence updating
the assembly files.
Default value for timer/idle thread trustzone identifier is 0, updated
it to 1 to allow threads to access secure functions when timer is secure device.
When ticker is not driven by the 1 MHz clock and HAL driver need to perform conversion between microseconds and ticks, then the interrupt might be scheduled in the past. For details see: https://github.com/ARMmbed/mbed-os/issues/6054.
This patch provides fix for such case. Interrupt is fired immidiatelly when last read tick is equal to the calculated tick when interrupt should be generated.
As mut['mcu'] can be "None" on unknown targets, the detect_targets script crashes when one of these boards is connected.
This happens when "mbed-cli detect -vv" is ran when a STEVAL-3DP001V1 board is connected. Which does not provide a html file with a target_id, and thus cannot be looked up in the mbedls platform database.
http://www.st.com/en/evaluation-tools/steval-3dp001v1.html
Fix Details: HAL API for loguart is different that UART. Initially we
didnt have support for loguart in the mbed api. These changes have been
made to support the loguart from the mbed api by using the correct HAL
api calls
The introduction of pretty-bar had broken the handling of
"mbed compile"'s "--stats-depth" argument. No matter what one gave
as parameter to it, the result output is just using the default 2.
Fix the logic in build_api.
Marcus Chang
jeromecoutant
Christopher Haster
Przemyslaw Stekiel
ccli8
Cruz Monrreal II
Jimmy Brisson
PHST
Andrew Leech
Bilal
Brendan McDonnell
Pavel Slama
deepikabhavnani
Jan Jongboom
daid
Prashant Ravi
bcostm
Tero Jääskö