Where do i start?

Hi everyone

I have been desing hardware based on the C51 architecture in assembly code
I am wanting to migrate to ARM and and wanting to start writing in C rather 
than assembler. can anyone give me any site that could help me out with 
this, like writing to registers, changing modes, dealing with interrupts 
etc.

Thanx!
Xarion 

Xarion wrote:
> Hi everyone
> 
> I have been desing hardware based on the C51 architecture in assembly code
> I am wanting to migrate to ARM and and wanting to start writing in C rather 
> than assembler. can anyone give me any site that could help me out with 
> this, like writing to registers, changing modes, dealing with interrupts 
> etc.

sdcc is a C compiler for c51 and it's free
the datasheet of the microcontroller is the first place where I look for 
basic things , application notes are the second and third there is 
google :-)

you can easily find code in asm or C for many tasks.

always check for compatibility between derivatives of the chip ( 
different chip different registers and peripherals )

> 
> Thanx!
> Xarion 
> 
> 

oh , a simple sbc withe micro and ram is useful.

On Tue, 26 Jul 2005 12:59:44 +0200, Xarion <xarion@fuderables.co.za> wrote:

> I have been desing hardware based on the C51 architecture in assembly 
> code
> I am wanting to migrate to ARM and and wanting to start writing in C 
> rather
> than assembler. can anyone give me any site that could help me out with
> this, like writing to registers, changing modes, dealing with interrupts
> etc.

http://www.arm.com/documentation/

   Vadim

Think i might have mis-communicated my point:)

I am wanting to develop new hardware with ARM micros and am looking for some
sort of introduction into c programming for ARM architectures.  I have been 
through ARM's website and haven't found anything that could help me starting 
with ARM its more for people already working with ARM.

Xarion

"Xarion" <xarion@fuderables.co.za> wrote in message 
news:dc557n$kns$1@ctb-nnrp2.saix.net...
> Hi everyone
>
> I have been desing hardware based on the C51 architecture in assembly code
> I am wanting to migrate to ARM and and wanting to start writing in C 
> rather than assembler. can anyone give me any site that could help me out 
> with this, like writing to registers, changing modes, dealing with 
> interrupts etc.
>
> Thanx!
> Xarion
> 

On Tue, 26 Jul 2005 13:59:02 +0200, Xarion <xarion@fuderables.co.za> wrote:

> Think i might have mis-communicated my point:)
>
> I am wanting to develop new hardware with ARM micros and am looking for 
> some
> sort of introduction into c programming for ARM architectures. I have 
> been
> through ARM's website and haven't found anything that could help me 
> starting
> with ARM its more for people already working with ARM.

So, have you seen the App Note 34 "Writing Efficient C for ARM" in 
<http://www.arm.com/documentation/Application_Notes/index.html> ?

   Vadim

Ahh didnt see that one :-)
Thanx

"Vadim Borshchev" <vadim.borshchev@127.0.0.1> wrote in message 
news:opsuitc2xzy1ubid@news...
> On Tue, 26 Jul 2005 13:59:02 +0200, Xarion <xarion@fuderables.co.za> 
> wrote:
>
>> Think i might have mis-communicated my point:)
>>
>> I am wanting to develop new hardware with ARM micros and am looking for 
>> some
>> sort of introduction into c programming for ARM architectures. I have 
>> been
>> through ARM's website and haven't found anything that could help me 
>> starting
>> with ARM its more for people already working with ARM.
>
> So, have you seen the App Note 34 "Writing Efficient C for ARM" in 
> <http://www.arm.com/documentation/Application_Notes/index.html> ?
>
>   Vadim 

Try looking at some of the C source code examples associated with an ARM 
evaluation kit (for example, Atmel's AT91EB40A...

http://www.atmel.com/dyn/products/tools_card.asp?family_id=605&family_name=AT91+ARM+Thumb&tool_id=2717

While they are specific to a particular implementation (product) they do 
provide real examples of low level software written in C (i.e. accessing 
registers in devices, interrupts, etc.). There are probably better links... 
but this is one I knew of.

TC


"Xarion" <xarion@fuderables.co.za> wrote in message 
news:dc557n$kns$1@ctb-nnrp2.saix.net...
> Hi everyone
>
> I have been desing hardware based on the C51 architecture in assembly code
> I am wanting to migrate to ARM and and wanting to start writing in C 
> rather than assembler. can anyone give me any site that could help me out 
> with this, like writing to registers, changing modes, dealing with 
> interrupts etc.
>
> Thanx!
> Xarion
>