PWM drivers usually supports dead time generators that automatically
insert output activation delay for complementary PWM outputs. This
is usefull for some control purposes as control of H bridge for example.
This commit adds an application to driver interface that can be used
to set up those delays (if supported by the selected architecture)
directly from the application. The set up remains the same as for duty
cycle value.
The whole addition is by default disabled. It can be enabled by config
option PWM_DEADTIME.
Signed-off-by: Michal Lenc <michallenc@seznam.cz>
Echoing console's input is now performed by the serial driver
(https://github.com/apache/nuttx/pull/8691). In order to keep old
behavior of CR being echoed by the device, it's needed to detected
whenever NL is being echoed and send CR before sending it.
NuttX only treat \n as new line after https://github.com/apache/nuttx/pull/8628,
so need this conversion to interact with terminal emulator.
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
since both aren't suitable after:
commit 98ab55ef68
Author: Xiang Xiao <xiaoxiang@xiaomi.com>
Date: Fri Dec 30 12:02:47 2022 +0800
drivers/note: Replace the scritical section with spin_xxx_wo_note
to avoid to generate the unexpected schedule information
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
since after the below commit, noteram driver can work even when
the instrumentation of csection, spinlock and smp is enabled
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
since the chip/board vendor could disable dirvers/note and
provide the implementation of sched_note_xxx by self
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Generic drivers shoud not use architecture related config options like
CONFIG_SAMV7_PWM. This commit adds PWM pin overwrite under generic
configuration option CONFIG_PWM_OVERWRITE.
Now the overwrite can be used on other architectures as well or can be
completely disabled for SAMv7.
Signed-off-by: Michal Lenc <michallenc@seznam.cz>
mmcsd_removed will be called if the card is in invalid state.
This can happen if the card is bad, or vibrations causes a power
loss.
mmcsd_removed resets:
priv->capacity = 0; /* Capacity=0 sometimes means no media */
priv->blocksize = 0;
priv->probed = false;
priv->mediachanged = false;
priv->wrbusy = false;
priv->type = MMCSD_CARDTYPE_UNKNOWN;
priv->rca = 0;
priv->selblocklen = 0;
priv->widebus = false;
If blocksize is set to 0 will cause the log2 to result
in an infinate loop in some drivers.
IS_EMPTY will check for priv->type = MMCSD_CARDTYPE_UNKNOWN
and return ENODEV.
The TERMIOS(3) function tcsendbreak() and the IOCTLs TCSBRK and TCSBRKP
transmit a serial line Break.
Previously NuttX included an extern declaration for tcsendbreak() and
defines for TCSBRK and TCSBRKP but none of these were implemented.
Attempting to build programs that called tcsendbreak() would fail with
a linker error; attempting to use TCSBRK and TCSBRKP would result in an
error at runtime.
This changeset adds the tcsendbreak() function and handling for TCSBRK
and TCSBRKP; tcsendbreak() is implemented in terms of TCSBRK. Both
TCSBRK and TCSBRKP are implemented in terms of the BSD-compatible Break
IOCTLs TIOCSBRK and TIOCCBRK, which must be provided by the lower half
serial driver. Currently, not all lower half serial drivers in NuttX
support these IOCTLs. Those that do implement them may need one or more
Kconfig options to be set, such as `CONFIG_*_U[S]ART_BREAKS` and, on
some architectures, a separate `CONFIG_*_SERIALBRK_BSDCOMPAT`.
* drivers/serial/serial.c
(uart_tcsendbreak): New function.
(uart_ioctl): Implement TCSBRK and TCSBRKP.
* libs/libc/termios/lib_tcsendbreak.c
(): New file.
* libs/libc/termios/Make.defs
(CSRCS): Add lib_tcsendbreak.c to the build.
Thanks to Xiang Xiao for PR feedback.
Co-authored-by: Xiang Xiao <xiaoxiang781216@gmail.com>
