Definitions for c_cflag etc. in termbits.h???

Definitions for c_cflag etc. in termbits.h???

[Steven Scholz]

Hi there,

I am playing around with UARTs and got completly confused when looking at
./include/asm-ppc/termbits.h:

E.g. the DEFINEs of c_iflags appear to me as decimal values!?

/* c_iflag bits */
#define IGNBRK  0000001
#define BRKINT  0000002
#define IGNPAR  0000004
#define PARMRK  0000010
#define INPCK   0000020
#define ISTRIP  0000040
#define INLCR   0000100
#define IGNCR   0000200
#define ICRNL   0000400
#define IXON    0001000
#define IXOFF   0002000
#define IXANY   0004000
#define IUCLC   0010000
#define IMAXBEL 0020000

So how could code like

./arch/ppc/8xx_io/uart.c:       if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
or
./arch/ppc/8xx_io/uart.c:#define RELEVANT_IFLAG(iflag) (iflag &
(IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))

possibly work?

Shouldn't that be hex values as in ./include/asm-sparc64/termbits.h:

/* c_iflag bits */
#define IGNBRK  0x00000001
#define BRKINT  0x00000002
#define IGNPAR  0x00000004
#define PARMRK  0x00000008
#define INPCK   0x00000010
#define ISTRIP  0x00000020
#define INLCR   0x00000040
#define IGNCR   0x00000080
etc. ???

Thanks,

Steven

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Re: Definitions for c_cflag etc. in termbits.h???

[Marius Groeger]

On Fri, 10 Jan 2003, Steven Scholz wrote:

> ./include/asm-ppc/termbits.h:
>
> E.g. the DEFINEs of c_iflags appear to me as decimal values!?
>
> /* c_iflag bits */
> #define IGNBRK  0000001

It's octal (note the leading zero).

Regards,
Marius

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Re: Definitions for c_cflag etc. in termbits.h???

[Wolfgang Denk]

Hi Steven,

in message <3E1EE23F.5BC310F3@imc-berlin.de> you wrote:
>
> E.g. the DEFINEs of c_iflags appear to me as decimal values!?
>
> /* c_iflag bits */
> #define IGNBRK  0000001
> #define BRKINT  0000002
> #define IGNPAR  0000004
> #define PARMRK  0000010
> #define INPCK   0000020
> #define ISTRIP  0000040
> #define INLCR   0000100
> #define IGNCR   0000200
> #define ICRNL   0000400
> #define IXON    0001000
> #define IXOFF   0002000
> #define IXANY   0004000
> #define IUCLC   0010000
> #define IMAXBEL 0020000

No, these are octal values, of course.


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Re: Definitions for c_cflag etc. in termbits.h???

[Steven Scholz]

Steven Scholz wrote:
>
> Hi there,
>
> I am playing around with UARTs and got completly confused when looking at
> ./include/asm-ppc/termbits.h:
>
> E.g. the DEFINEs of c_iflags appear to me as decimal values!?
>
> /* c_iflag bits */
> #define IGNBRK  0000001

Thanks to you all!

Of course it's octal.

It's friday! Sorry for the noise!

Steven

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Re: Definitions for c_cflag etc. in termbits.h???

["David Müller (ELSOFT AG)"]

Hi

Steven Scholz wrote:
> Hi there,
>
> I am playing around with UARTs and got completly confused when looking at
> ./include/asm-ppc/termbits.h:

That reminds me of something:


Is it possible that "CMSPAR" is missing in both the 2.4 and 2.5 version
of asm-ppc/termbits.h?


Dave


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RE: Definitions for c_cflag etc. in termbits.h???

[Milliorn Gary-rxcr80]

[-- Attachment #1: Type: text/plain, Size: 1504 bytes --]



> -----Original Message-----
> From: Steven Scholz [mailto:steven.scholz@imc-berlin.de]
> Sent: Friday, January 10, 2003 9:10 AM
> To: LinuxPPC
> Subject: Definitions for c_cflag etc. in termbits.h???
>
>
>
> Hi there,
>
> I am playing around with UARTs and got completly confused
> when looking at
> ./include/asm-ppc/termbits.h:
>
> E.g. the DEFINEs of c_iflags appear to me as decimal values!?
>
> /* c_iflag bits */
> #define IGNBRK  0000001
> #define BRKINT  0000002
> #define IGNPAR  0000004
> #define PARMRK  0000010


It's octal, and the values are the same.  Octal 10 = Hex 8.
As to why octal, I couldn't hazard a guess...



> #define INPCK   0000020
> #define ISTRIP  0000040
> #define INLCR   0000100
> #define IGNCR   0000200
> #define ICRNL   0000400
> #define IXON    0001000
> #define IXOFF   0002000
> #define IXANY   0004000
> #define IUCLC   0010000
> #define IMAXBEL 0020000
>
> So how could code like
>
> ./arch/ppc/8xx_io/uart.c:       if (I_BRKINT(info->tty) ||
> I_PARMRK(info->tty))
> or
> ./arch/ppc/8xx_io/uart.c:#define RELEVANT_IFLAG(iflag) (iflag &
> (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
>
> possibly work?
>
> Shouldn't that be hex values as in ./include/asm-sparc64/termbits.h:
>
> /* c_iflag bits */
> #define IGNBRK  0x00000001
> #define BRKINT  0x00000002
> #define IGNPAR  0x00000004
> #define PARMRK  0x00000008
> #define INPCK   0x00000010
> #define ISTRIP  0x00000020
> #define INLCR   0x00000040
> #define IGNCR   0x00000080
> etc. ???
>
> Thanks,
>
> Steven
>


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Re: Definitions for c_cflag etc. in termbits.h???

[Wolfgang Denk]

In message <5725AF6EE9FAD51195DC009027E3770201266556@az33exm35.corp.mot.com> you wrote:
>
> As to why octal, I couldn't hazard a guess...

Most of the original Unix code used octal constants. They were pretty
popular on the PDP computers...

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
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