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Discussion Groups | LPC2000 | LPC24xx AHBCFG registers
Discussion group dedicated to the Philips LPC2000 family of ARM MCUs
LPC24xx AHBCFG registers - Zdravko - Nov 3 9:55:50 2008
Hi, to All
Where are AHBCFG registers documented? The processor I
am currently using is LPC2468.
Thank you in advance.
Regards
Zdravko Dimitrov
------------------------------------
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Where are AHBCFG registers documented? The processor I
am currently using is LPC2468.
Thank you in advance.
Regards
Zdravko Dimitrov
------------------------------------
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Re: LPC24xx AHBCFG registers - Herbert Demmel - Nov 3 10:00:29 2008
At 14:53 03.11.2008 +0000, you wrote:
>Hi, to All
>Where are AHBCFG registers documented? The processor I
>am currently using is LPC2468.
They are not documented yet, because NXP originally though it will
never be neccessary to use something different than the default
values and the risk for malefunctions are too high if one writes
wrong values into these registers. I assume (I'm not NXP) there will
be an update in near future.
Regards
Herbert
------------------------------------
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>Hi, to All
>Where are AHBCFG registers documented? The processor I
>am currently using is LPC2468.
They are not documented yet, because NXP originally though it will
never be neccessary to use something different than the default
values and the risk for malefunctions are too high if one writes
wrong values into these registers. I assume (I'm not NXP) there will
be an update in near future.
Regards
Herbert
------------------------------------
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Re: LPC24xx AHBCFG registers - "J.C. Wren" - Nov 3 10:22:37 2008
"...risk of malefunctions..." So it'll start drinking beer and passing gas?
On Mon, Nov 3, 2008 at 10:00 AM, Herbert Demmel wrote:
> At 14:53 03.11.2008 +0000, you wrote:
>>Hi, to All
>>Where are AHBCFG registers documented? The processor I
>>am currently using is LPC2468.
>
> They are not documented yet, because NXP originally though it will
> never be neccessary to use something different than the default
> values and the risk for malefunctions are too high if one writes
> wrong values into these registers. I assume (I'm not NXP) there will
> be an update in near future.
>
> Regards
> Herbert
------------------------------------
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On Mon, Nov 3, 2008 at 10:00 AM, Herbert Demmel
> At 14:53 03.11.2008 +0000, you wrote:
>>Hi, to All
>>Where are AHBCFG registers documented? The processor I
>>am currently using is LPC2468.
>
> They are not documented yet, because NXP originally though it will
> never be neccessary to use something different than the default
> values and the risk for malefunctions are too high if one writes
> wrong values into these registers. I assume (I'm not NXP) there will
> be an update in near future.
>
> Regards
> Herbert
------------------------------------
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Re: LPC24xx AHBCFG registers - Herbert Demmel - Nov 3 10:47:21 2008
At 10:22 03.11.2008 -0500, you wrote:
>"...risk of malefunctions..." So it'll start drinking beer and passing gas?
ok, I assume "nit-picking" is the correct word for you ;-) - this is
what the www.dict.cc says - I agree that adding one "e" sometimes
changes the meaning of a word rather heavily, but looking in the
dictionary all the time is too time-consuming ...
I agree, "femalefunctions" would be more interesting ...
Herbert
>On Mon, Nov 3, 2008 at 10:00 AM, Herbert Demmel wrote:
> > At 14:53 03.11.2008 +0000, you wrote:
> >>Hi, to All
> >>Where are AHBCFG registers documented? The processor I
> >>am currently using is LPC2468.
> >
> > They are not documented yet, because NXP originally though it will
> > never be neccessary to use something different than the default
> > values and the risk for malefunctions are too high if one writes
> > wrong values into these registers. I assume (I'm not NXP) there will
> > be an update in near future.
> >
> > Regards
> > Herbert
------------------------------------
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>"...risk of malefunctions..." So it'll start drinking beer and passing gas?
ok, I assume "nit-picking" is the correct word for you ;-) - this is
what the www.dict.cc says - I agree that adding one "e" sometimes
changes the meaning of a word rather heavily, but looking in the
dictionary all the time is too time-consuming ...
I agree, "femalefunctions" would be more interesting ...
Herbert
>On Mon, Nov 3, 2008 at 10:00 AM, Herbert Demmel
> > At 14:53 03.11.2008 +0000, you wrote:
> >>Hi, to All
> >>Where are AHBCFG registers documented? The processor I
> >>am currently using is LPC2468.
> >
> > They are not documented yet, because NXP originally though it will
> > never be neccessary to use something different than the default
> > values and the risk for malefunctions are too high if one writes
> > wrong values into these registers. I assume (I'm not NXP) there will
> > be an update in near future.
> >
> > Regards
> > Herbert
------------------------------------
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Re: LPC24xx AHBCFG registers - "J.C. Wren" - Nov 3 10:54:15 2008
Nah, I'm not nit-picking. Some typos just strike me as funny. As for
"femalefunctions", do you really want your code getting moody and
snapping at you for no apparent reason?
Programmer> "What's wrong, little program?"
LPC24xx> "Nothing."
Programmer> "OK."
LPC24xx> "If you really loved me, you'd *know*!"
--jc
On Mon, Nov 3, 2008 at 10:47 AM, Herbert Demmel wrote:
> At 10:22 03.11.2008 -0500, you wrote:
>>"...risk of malefunctions..." So it'll start drinking beer and passing gas?
>
> ok, I assume "nit-picking" is the correct word for you ;-) - this is
> what the www.dict.cc says - I agree that adding one "e" sometimes
> changes the meaning of a word rather heavily, but looking in the
> dictionary all the time is too time-consuming ...
>
> I agree, "femalefunctions" would be more interesting ...
>
> Herbert
------------------------------------
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"femalefunctions", do you really want your code getting moody and
snapping at you for no apparent reason?
Programmer> "What's wrong, little program?"
LPC24xx> "Nothing."
Programmer> "OK."
LPC24xx> "If you really loved me, you'd *know*!"
--jc
On Mon, Nov 3, 2008 at 10:47 AM, Herbert Demmel
> At 10:22 03.11.2008 -0500, you wrote:
>>"...risk of malefunctions..." So it'll start drinking beer and passing gas?
>
> ok, I assume "nit-picking" is the correct word for you ;-) - this is
> what the www.dict.cc says - I agree that adding one "e" sometimes
> changes the meaning of a word rather heavily, but looking in the
> dictionary all the time is too time-consuming ...
>
> I agree, "femalefunctions" would be more interesting ...
>
> Herbert
------------------------------------
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Re: LPC24xx AHBCFG registers - Herbert Demmel - Nov 3 12:32:38 2008
At 10:54 03.11.2008 -0500, you wrote:
>Nah, I'm not nit-picking. Some typos just strike me as funny. As for
>"femalefunctions", do you really want your code getting moody and
>snapping at you for no apparent reason?
>
>Programmer> "What's wrong, little program?"
>LPC24xx> "Nothing."
>Programmer> "OK."
>LPC24xx> "If you really loved me, you'd *know*!"
Ok, convinced :-D
------------------------------------
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>Nah, I'm not nit-picking. Some typos just strike me as funny. As for
>"femalefunctions", do you really want your code getting moody and
>snapping at you for no apparent reason?
>
>Programmer> "What's wrong, little program?"
>LPC24xx> "Nothing."
>Programmer> "OK."
>LPC24xx> "If you really loved me, you'd *know*!"
Ok, convinced :-D
------------------------------------
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Re: LPC24xx AHBCFG registers - mjames_doveridge - Nov 3 16:00:04 2008
--- In l...@yahoogroups.com, "J.C. Wren" wrote:
>
> Nah, I'm not nit-picking. Some typos just strike me as funny. As for
> "femalefunctions", do you really want your code getting moody and
> snapping at you for no apparent reason?
>
> Programmer> "What's wrong, little program?"
> LPC24xx> "Nothing."
> Programmer> "OK."
> LPC24xx> "If you really loved me, you'd *know*!"
>
Try Hardware Replacement Therapy..
Rgds,
Martin
------------------------------------
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>
> Nah, I'm not nit-picking. Some typos just strike me as funny. As for
> "femalefunctions", do you really want your code getting moody and
> snapping at you for no apparent reason?
>
> Programmer> "What's wrong, little program?"
> LPC24xx> "Nothing."
> Programmer> "OK."
> LPC24xx> "If you really loved me, you'd *know*!"
>
Try Hardware Replacement Therapy..
Rgds,
Martin
------------------------------------
______________________________
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Re: LPC24xx AHBCFG registers - hjiongh - Nov 3 20:50:21 2008
hi
This register is very important if you use external flash to execute
code.
Regards
Vincent
--- In l...@yahoogroups.com, Herbert Demmel wrote:
>
> At 10:54 03.11.2008 -0500, you wrote:
> >Nah, I'm not nit-picking. Some typos just strike me as funny. As
for
> >"femalefunctions", do you really want your code getting moody and
> >snapping at you for no apparent reason?
> >
> >Programmer> "What's wrong, little program?"
> >LPC24xx> "Nothing."
> >Programmer> "OK."
> >LPC24xx> "If you really loved me, you'd *know*!"
>
> Ok, convinced :-D
>
------------------------------------
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This register is very important if you use external flash to execute
code.
Regards
Vincent
--- In l...@yahoogroups.com, Herbert Demmel
>
> At 10:54 03.11.2008 -0500, you wrote:
> >Nah, I'm not nit-picking. Some typos just strike me as funny. As
for
> >"femalefunctions", do you really want your code getting moody and
> >snapping at you for no apparent reason?
> >
> >Programmer> "What's wrong, little program?"
> >LPC24xx> "Nothing."
> >Programmer> "OK."
> >LPC24xx> "If you really loved me, you'd *know*!"
>
> Ok, convinced :-D
>
------------------------------------
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Re: LPC24xx AHBCFG registers - Zdravko - Nov 4 4:18:22 2008
--- In l...@yahoogroups.com, Herbert Demmel wrote:
>
> At 14:53 03.11.2008 +0000, you wrote:
> >Hi, to All
> >Where are AHBCFG registers documented? The processor I
> >am currently using is LPC2468.
>
> They are not documented yet, because NXP originally though it will
> never be neccessary to use something different than the default
> values and the risk for malefunctions are too high if one writes
> wrong values into these registers. I assume (I'm not NXP) there will
> be an update in near future.
>
> Regards
> Herbert
>
Hmmm, I was sure that I have seen description of these registers
somewhere. But yesterday search results ended with none. Despite of
this and ignoring the risk of "start drinking beer and passing gas"
would somebody share some info on these registers here.
Regards
Zdravko Dimitrov
------------------------------------
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
>
> At 14:53 03.11.2008 +0000, you wrote:
> >Hi, to All
> >Where are AHBCFG registers documented? The processor I
> >am currently using is LPC2468.
>
> They are not documented yet, because NXP originally though it will
> never be neccessary to use something different than the default
> values and the risk for malefunctions are too high if one writes
> wrong values into these registers. I assume (I'm not NXP) there will
> be an update in near future.
>
> Regards
> Herbert
>
Hmmm, I was sure that I have seen description of these registers
somewhere. But yesterday search results ended with none. Despite of
this and ignoring the risk of "start drinking beer and passing gas"
would somebody share some info on these registers here.
Regards
Zdravko Dimitrov
------------------------------------
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
Re: Re: LPC24xx AHBCFG registers - Herbert Demmel - Nov 4 4:30:44 2008
At 09:17 04.11.2008 +0000, you wrote:
>Hmmm, I was sure that I have seen description of these registers
>somewhere. But yesterday search results ended with none.
As far as I know it was in the manual at the time being a non-final
document and has been removed later.
>Despite of
>this and ignoring the risk of "start drinking beer and passing gas"
;-) I really should take care about my typos
>would somebody share some info on these registers here.
I think the few people using this register until now got a suggested
value to write into by NXP (as I did) without having a documentation.
Sorry for not being able to help.
Herbert
------------------------------------
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
>Hmmm, I was sure that I have seen description of these registers
>somewhere. But yesterday search results ended with none.
As far as I know it was in the manual at the time being a non-final
document and has been removed later.
>Despite of
>this and ignoring the risk of "start drinking beer and passing gas"
;-) I really should take care about my typos
>would somebody share some info on these registers here.
I think the few people using this register until now got a suggested
value to write into by NXP (as I did) without having a documentation.
Sorry for not being able to help.
Herbert
------------------------------------
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
RE: Re: LPC24xx AHBCFG registers - Tim Mitchell - Nov 4 4:53:04 2008
----Original Message----
From: l...@yahoogroups.com
[mailto:l...@yahoogroups.com] On Behalf Of Herbert
Demmel Sent: 04 November 2008 09:31 To:
l...@yahoogroups.com Subject: Re: [lpc2000] Re: LPC24xx
AHBCFG registers
>
> > would somebody share some info on these registers here.
>
> I think the few people using this register until now got
> a suggested value to write into by NXP (as I did) without
> having a documentation.
>
It's only necessary to change it when using the LPC2478 LCD controller.
Even NXP do not seem to be that sure of how it works, as they gave us
several suggested values to find out which one worked best.
Rowley's LPC2478 include file sheds a bit of light. I don't know where
they got their bit definitions from.
#define AHBCFG1 (*(volatile unsigned long *)0xE01FC188)
#define AHBCFG1_OFFSET 0x188
#define AHBCFG1_scheduler_MASK 0x1
#define AHBCFG1_scheduler 0x1
#define AHBCFG1_scheduler_BIT 0
#define AHBCFG1_break_burst_MASK 0x6
#define AHBCFG1_break_burst_BIT 1
#define AHBCFG1_quantum_type_MASK 0x8
#define AHBCFG1_quantum_type 0x8
#define AHBCFG1_quantum_type_BIT 3
#define AHBCFG1_quantum_size_MASK 0xF0
#define AHBCFG1_quantum_size_BIT 4
#define AHBCFG1_default_master_MASK 0xF00
#define AHBCFG1_default_master_BIT 8
#define AHBCFG1_EP1_MASK 0xF000
#define AHBCFG1_EP1_BIT 12
#define AHBCFG1_EP2_MASK 0xF0000
#define AHBCFG1_EP2_BIT 16
#define AHBCFG1_EP3_MASK 0xF00000
#define AHBCFG1_EP3_BIT 20
#define AHBCFG1_EP4_MASK 0xF000000
#define AHBCFG1_EP4_BIT 24
#define AHBCFG2 (*(volatile unsigned long *)0xE01FC18C)
#define AHBCFG2_OFFSET 0x18C
#define AHBCFG2_scheduler_MASK 0x1
#define AHBCFG2_scheduler 0x1
#define AHBCFG2_scheduler_BIT 0
#define AHBCFG2_break_burst_MASK 0x6
#define AHBCFG2_break_burst_BIT 1
#define AHBCFG2_quantum_type_MASK 0x8
#define AHBCFG2_quantum_type 0x8
#define AHBCFG2_quantum_type_BIT 3
#define AHBCFG2_quantum_size_MASK 0xF0
#define AHBCFG2_quantum_size_BIT 4
#define AHBCFG2_default_master_MASK 0xF00
#define AHBCFG2_default_master_BIT 8
#define AHBCFG2_EP1_MASK 0xF000
#define AHBCFG2_EP1_BIT 12
#define AHBCFG2_EP2_MASK 0xF0000
#define AHBCFG2_EP2_BIT 16
--
Tim Mitchell
------------------------------------
______________________________
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From: l...@yahoogroups.com
[mailto:l...@yahoogroups.com] On Behalf Of Herbert
Demmel Sent: 04 November 2008 09:31 To:
l...@yahoogroups.com Subject: Re: [lpc2000] Re: LPC24xx
AHBCFG registers
>
> > would somebody share some info on these registers here.
>
> I think the few people using this register until now got
> a suggested value to write into by NXP (as I did) without
> having a documentation.
>
It's only necessary to change it when using the LPC2478 LCD controller.
Even NXP do not seem to be that sure of how it works, as they gave us
several suggested values to find out which one worked best.
Rowley's LPC2478 include file sheds a bit of light. I don't know where
they got their bit definitions from.
#define AHBCFG1 (*(volatile unsigned long *)0xE01FC188)
#define AHBCFG1_OFFSET 0x188
#define AHBCFG1_scheduler_MASK 0x1
#define AHBCFG1_scheduler 0x1
#define AHBCFG1_scheduler_BIT 0
#define AHBCFG1_break_burst_MASK 0x6
#define AHBCFG1_break_burst_BIT 1
#define AHBCFG1_quantum_type_MASK 0x8
#define AHBCFG1_quantum_type 0x8
#define AHBCFG1_quantum_type_BIT 3
#define AHBCFG1_quantum_size_MASK 0xF0
#define AHBCFG1_quantum_size_BIT 4
#define AHBCFG1_default_master_MASK 0xF00
#define AHBCFG1_default_master_BIT 8
#define AHBCFG1_EP1_MASK 0xF000
#define AHBCFG1_EP1_BIT 12
#define AHBCFG1_EP2_MASK 0xF0000
#define AHBCFG1_EP2_BIT 16
#define AHBCFG1_EP3_MASK 0xF00000
#define AHBCFG1_EP3_BIT 20
#define AHBCFG1_EP4_MASK 0xF000000
#define AHBCFG1_EP4_BIT 24
#define AHBCFG2 (*(volatile unsigned long *)0xE01FC18C)
#define AHBCFG2_OFFSET 0x18C
#define AHBCFG2_scheduler_MASK 0x1
#define AHBCFG2_scheduler 0x1
#define AHBCFG2_scheduler_BIT 0
#define AHBCFG2_break_burst_MASK 0x6
#define AHBCFG2_break_burst_BIT 1
#define AHBCFG2_quantum_type_MASK 0x8
#define AHBCFG2_quantum_type 0x8
#define AHBCFG2_quantum_type_BIT 3
#define AHBCFG2_quantum_size_MASK 0xF0
#define AHBCFG2_quantum_size_BIT 4
#define AHBCFG2_default_master_MASK 0xF00
#define AHBCFG2_default_master_BIT 8
#define AHBCFG2_EP1_MASK 0xF000
#define AHBCFG2_EP1_BIT 12
#define AHBCFG2_EP2_MASK 0xF0000
#define AHBCFG2_EP2_BIT 16
--
Tim Mitchell
------------------------------------
______________________________
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