Since the "EXTI->PR" is an "rc_w1" type of register, we need to be
careful when clearing our interrupt flag in the register. When there
are multiple interrupt flags set in the register, the "|=" operation
will mistakenly clear all pending interrupts instead of just ours.
- On pwm_poweron, the PWM resolution was not restored. (A custom resolution was
only usable if, PWM channel 0 is not used. That configuration is not common,
so this bug was likely never triggered)
- Disabled a work around to prevent flickering:
- Previously, PWM was disconnected on level 0% and 100%
- This increases the run time of `pwm_set()`
- It prevents using the PWM for wave form generation via DDS, as the wave
noticeably jumps when reaching 0% or 100%
- Slightly reduces memory requirements: 2 Bytes of RAM, 112 Bytes of ROM
- Tested with avr-gcc 9.2.0 and LTO enabled
Drop `#include "irq.h"` in `cpu.h`, which was there for a legacy work around.
A bunch of missing includes of `irq.h` materialized due to this and were
fixed.
- Drop duplicated `cpu.c` and `cpu_conf.h`: Those are already provided by
`cpu/atmega_common`.
- The higher values for default stack size of `cpu_conf.h` in
`cpu/atmega_common` results in three tests no longer fitting the available RAM
==> Updated the Makefile.ci to skip linking of those tests for the Arduino
Leonardo
We don't need to define FLASHPAGE_SIZE and FLASHPAGE_NUMOF ourself if
the BPROT peripheral is present.
Now why nrf52840 doesn't have it, I don't know, but for nrf52832 and
nrf23811 the values in BPROT_REGIONS_SIZE and BPROT_REGIONS_NUM match
the values manually provided here before.
__set_PRIMASK(state) had been directly inlined to avoid a hardfault that
occured when branching after waking up from sleep with DBG_STANDBY,
DBG_STOP or DBG_SLEEP set in DBG_CR.
The hardfault occured when returning from the branch to irq_restore,
since the function is now inlined the branch does not happen either.
Refer to #14015 for more details.
irq_% are not inlined by the compiler which leads to it branching
to a function that actually implement a single machine instruction.
Inlining these functions makes the call more efficient as well as
saving some bytes in ROM.
Flashing an ESP board first requires the creation of a flash image from the ELF file. This is realized in the `preflash` target. However, the `preflash` target only depends on the variable `BUILD_BEFORE_FLASH` but on the ELF file. Therefore, the variable `BUILD_BEFORE_FLASH` must be set to the ELF file to ensure that when using multiple make processes, the compilation of the ELF file is completed before the flash image is created.
In #12955 optimization was switched to O2 because with the '-Os'
option, the ESP32 hangs sporadically in 'tests/bench*' if
interrupts where disabled too early by benchmark tests.
Since it hasn't been reproduced since and in #13196 O2 was causing
un-explained hardfaults, since the aforementioned issue could not
be reproduced we switch back to Os by removing O2, as Os will be
used by default.
Writing a 1 bit clears the interrupt flag, writing with |= is thus
uneccecary (and actually an error as this would clear *all* flags).
This cleanup was already done for rtt.c, but rtc.c missed out.
This is needed to switch the SCLK_HF source clock safely.
Note: these functions work on cc26x2_cc13x2 and cc26x0, but special care
needs to be taken when calling on cc26x0 some of these functions, as
ADDI_SEM needs to be taken.
Signed-off-by: Jean Pierre Dudey <jeandudey@hotmail.com>
The sam0 MCUs all have a DAC peripheral.
The DAC has a resulution of 10 or 12 bits and can have one or two
output channels.
The output pins are always hard-wired to PA2 for DAC0 and PA5 for DAC1
if it exists.
On the same54-xpro I would only get a max value of ~1V when using the
internal reference, so I configured it to use an external voltage reference.
The external reference pin is hard-wired to PA3, so you'll have to connect
that to 3.3V to get results.
- Added ADI instruction offsets
- Added register banks and address bases for masked access (writes).
Signed-off-by: Jean Pierre Dudey <jeandudey@hotmail.com>
- Changed "meh" to "Reserved".
- Renamed CTL to CFG to match SDK/TRM name.
- Added constants for VIMS and FLASH necessary to trim registers.
Signed-off-by: Jean Pierre Dudey <jeandudey@hotmail.com>
- Fixes padding.
- Updates documentation.
- Removes documentation longer than 80-chars for the registers values.
Signed-off-by: Jean Pierre Dudey <jeandudey@hotmail.com>
This function is needed to setup the AUX operational mode at startup,
also used for managing low-power states.
Signed-off-by: Jean Pierre Dudey <jeandudey@hotmail.com>
Rename the variable to make it clearer that it refers to the last Makefile
included.
Usually this is the current file, but when another Makefile is included this
changes.
stm32f1 periph_rtc implementation gets a 1s resolution by dividing
CLOCK_LSx by 32768. This only make sense if CLOCK_LSE is set,
otherwise CLOCK_LSI=~40000, which will lead to an imprecise rtc.
