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>
Fix:
```
serial/serial.c: In function 'uart_ioctl':
Error: serial/serial.c:1397:46: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
1397 | FAR struct termios *termiosp = (FAR struct termios *)arg;
| ^
Error: serial/serial.c:1419:46: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
1419 | FAR struct termios *termiosp = (FAR struct termios *)arg;
|
```
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
Enable the behavior by default for console,
but configurable by termios.
Binary size:
Before:
text data bss dec hex filename
326460 409 8164 335033 51cb9 nuttx/nuttx
After:
text data bss dec hex filename
326478 409 8164 335051 51ccb nuttx/nuttx
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
since mmap may exist in block_operations, but truncate may not,
moving mmap beforee truncate could make three struct more compatible
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
- Add mmap into file_operations and remove it from ioctl definitions.
- Add mm_map structure definitions to support future unmapping
- Modify all drivers to initialize the operations struct accordingly
Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
- Add truncate into file_operations
- Move truncate to be common for mountpt_operations and file_operations
- Modify all drivers to initialize the operations struct accordingly
Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
1.Don't check the return value of nxsem_init or nxmutex_init
2.Fix some style issue
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
since ISIG belong local mode flags not input mode flags,
but local mode isn't implemented by pty driver yet.
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
