reason:
Since assert may synchronously wait to stop another CPU, potentially
leading to a deadlock, we replace enter_critical_section with a
small spinlock to avoid such a situation.
Signed-off-by: hujun5 <hujun5@xiaomi.com>
Add function description for function prototype of `riscv_jump_to_user`
to make it easier to read, and fix some inconsistent comment style in
`riscv_internal.h`.
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
This reverts commit befe29801f.
Because a few regressions have been reported and
it likely will take some time to fix them:
* for some configurations, semaphore can be used on the special
memory region, where atomic access is not available.
cf. https://github.com/apache/nuttx/pull/14625
* include/nuttx/lib/stdatomic.h is not compatible with
the C11 semantics, which the change in question relies on.
cf. https://github.com/apache/nuttx/pull/14755
Both RX and TX interrupts can be enabled after the setup of the transfer; the TX interrupt
must be enabled after queuing the first byte as done before. It is not possible to miss the
RX interrupts, as it pends as long as the byte gets read from the FIFO
When starting the TX, the first byte can be queued instantly, it won't be sent out to the
bus if there is NACK to the address. This also prevents spurious TX interrupts in error
cases, since the TX queue is not empty after initiating a transfer.
In some error cases controller sends STOP by itself even if AUTOSTOP is disabled.
It is better to tell the controller to ABORT, which will also generate STOP only when needed.
Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
1. add get macro related inteface, for now we have't fully implemented
the way to expand and evalute macros at runtime. We just deal with some macros that can be expand and evaluate into essential constants that will be needed later.
2. rearrange utility functions in a different order
3. reimplment the get register API to make it more commonly used
Signed-off-by: Gao Jiawei <gaojiawei@xiaomi.com>
Python Exception <class 'gdb.error'>: Attempt to assign to an unmodifiable value.
Python Exception <class 'gdb.error'>: Error occurred in Python: Attempt to assign to an unmodifiable value.
Error occurred in Python: Error occurred in Python: Attempt to assign to an unmodifiable value.
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
Adds ADC support with minimal feature set (no DMA or Timers etc). A new nucleo-h563zi configuration was added to
provide easy testing with the adc example NSH addon.
Fix Kconfig spacing to tabs
The original code did the speedup only from the other direction (from end
to start). If the starting GAT index has reservations, they are not skipped
as a bunch, but instead the GAT is iterated bit-by-bit, causing a massive
performance issue.
Fix this by:
- Skipping full GATs right away
- Skipping all of the reserved bits from the starting GAT as a bunch
The performance penalty in SMP mode is too big for taking the big kernel
lock simply to bump the address environment reference counter; fix this
by using the compiler provided atomic macros.
chip/efm32_start.c:150:3: warning: implicit declaration of function 'itm_syslog_initialize';
did you mean 'syslog_initialize'? [-Wimplicit-function-declaration]
150 | itm_syslog_initialize();
| ^~~~~~~~~~~~~~~~~~~~~
| syslog_initialize
Signed-off-by: chao an <anchao@lixiang.com>
Old upstream from @acassis:
d97227eddd/nuttx/configs/efm32gg-pnbfano/include/board.h
chip/efm32_clockconfig.c:860:24: error: 'BOARD_SWOPORT_LOCATION' undeclared (first use in this function);
did you mean 'BOARD_UART0_ROUTE_LOCATION'?
860 | regval |= ((uint32_t)BOARD_SWOPORT_LOCATION <<
| ^~~~~~~~~~~~~~~~~~~~~~
| BOARD_UART0_ROUTE_LOCATION
chip/efm32_clockconfig.c:860:24: note: each undeclared identifier is reported only once for each function it appears in
chip/efm32_clockconfig.c:866:20: error: 'BOARD_GPIO_SWOPORT' undeclared (first use in this function)
866 | efm32_configgpio(BOARD_GPIO_SWOPORT);
| ^~~~~~~~~~~~~~~~~~
Signed-off-by: chao an <anchao@lixiang.com>
