The PWM decodeer, in LOAD=Single mode, loads data in groups of 4
half-words. Previously, if any channel was not connected to a pin (a
connection that's immaterial to the loader), a smaller number would be
given resulting in the decoder not loading anything at all.
See-Also: https://infocenter.nordicsemi.com/pdf/nRF52840_PS_v1.1.pdf#page=256
Once PWM is running, the active PWM module overrides the PIN_CNF state;
only when PWM is stopped the pin returns into its PIN_CNF state (which,
then, the board may set to whatever idle means there).
(Moreover, the code there only worked for P0 registers, not eg. the
P1.09 of the nrf52840dongle's RGB LED).
This changes the prefixes of the symbols generated from USEMODULE and
USEPKG variables. The changes are as follow:
KCONFIG_MODULE_ => KCONFIG_USEMODULE_
KCONFIG_PKG_ => KCONFIG_USEPKG_
MODULE_ => USEMODULE_
PKG_ => USEPKG_
Either nRF52810 should define SPIM_COUNT 2 or nRF52805 should
define SPIM_COUNT 1.
But as it nRF52805 defines SPIM_COUNT 2 and nRF52810 defines SPIM_COUNT 1
even though both have a single SPI and a single, separate TWI peripheral.
Re-define SPIM_COUNT to 2 on nRF52810 as this is the easiest solution.
This commit enhances the I2C code of the nRF52 family to block on a
mutex while the I2C transfer is busy. The mutex is unlocked in the ISR
when it is trigger by either a stop condition or an error condition.
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.
This moves the following modules to a architecture-specific Makefile.dep
file:
- cortexm_common
- cortexm_common_periph
- newlib
- newlib_nano
- periph
The internal DC/DC converter is more efficient compared to the LDO
regulator. The downside of the DC/DC converter is that it requires an
external inductor to be present on the board. Enabling the DC/DC
converter is guarded with NRF5X_ENABLE_DCDC, this macro must be defined
if the DC/DC converter is to be enabled.
bitarithm.h is not needed for the interface of shed but may cause conflicts
due to different definitions of SETBIT and CLRBIT
common implementations are: (value, offset) xor (value, mask) bitarithm
implements the later
frac.c and nrf52/usbdev.c use bitarithm.h but where missing the include
sam0/rtt.c defined a bit using mask from bitarithm,
changed that to the soulution used in sam0/rtc.c
- Removed stdio_init() from newlib's _init(), as this is too late in the boot
process to allow DEBUG()ing during periph_init()
- Added stdio_init() to the various cpu_init() routines of the ARM CPUs just
before periph_init()
Engineering sample A doesn't have a functional USB peripheral (errata
issue 94). This commit adds an assertion check for this revision to
prevent some developer headaches.
The timer_clear function doesn't clear the hardware timer counter, but
is designed to clear the allocation of the channel. The consequence is
that the IFS timer here is not set to zero in the callback, but only
stopped at the current value. When the timer is started again, it has to
count the full timer range until it matches the timeout value again.
This commit fixes this issue by using timer_set instead of
timer_set_absolute. This way the current timer value (when the timer is
stopped) is read and the IFS timeout value is added to the current timer
value.
ieee802.15.4 specifies 40 symbols as LIFS value and 12 symbols as SIFS
value. Furthermore, the 2.4Ghz DSSS mode has a symbol rate of
62.5Ksymbols/s. To have the LIFS and SIFS in the code match the timings
from the specification, the TIMER_FREQ must match the symbol rate of
62.5Ksymbol/s such that one tick of the timer equals one symbol in time.
Prevent CPU from using cortexm_init() when softdevice is used for NRF52 devices
as the softdevice already do some obscur inits
Also ensure the softdevice pkg will be used by hacking Makefile due to RIOT's
build system limitations (will be fix later with the new build system)
