* Re: SPI flash driver
2010-05-11 12:49 SPI flash driver Jürgen Lambrecht
@ 2010-05-11 13:48 ` jerzy dyrda
2010-05-11 13:53 ` Nick Garnett
1 sibling, 0 replies; 3+ messages in thread
From: jerzy dyrda @ 2010-05-11 13:48 UTC (permalink / raw)
To: ecos-devel; +Cc: Jürgen Lambrecht, Dries Demeulemeester
Hello Jürgen,
On Tuesday 11 May 2010 14:49:38 Jürgen Lambrecht wrote:
> We will develop a SPI flash package for a Numonyx M25P80.
AFAIK those flashes are already supported ->
devs/flash/spi/m25pxx
static const m25pxx_params m25pxx_supported_devices [] = {
{ // Support for Numonyx 128 MBit devices.
sector_size : 1024,
sector_count : 64,
jedec_id : 0x00202018
},
{ // Support for Numonyx 64 MBit devices.
sector_size : 256,
sector_count : 128,
jedec_id : 0x00202017
},
{ // Support for Numonyx 16 MBit devices.
sector_size : 256,
sector_count : 64,
jedec_id : 0x00202016
},
{ // Support for Numonyx 16 MBit devices.
sector_size : 256,
sector_count : 32,
jedec_id : 0x00202015
},
{ // Support for Numonyx 8 MBit devices.
sector_size : 256,
sector_count : 16,
jedec_id : 0x00202014
^^^^^^^^^^^^^^^^
this one is yours
},
{ // Support for Numonyx 4 MBit devices.
sector_size : 256,
sector_count : 8,
jedec_id : 0x00202013
},
{ // Support for Numonyx 2 MBit devices.
sector_size : 256,
sector_count : 4,
jedec_id : 0x00202012
},
{ // Support for Numonyx 1 MBit devices.
sector_size : 128,
sector_count : 4,
jedec_id : 0x00202011
},
{ // Support for Numonyx 512 KBit devices.
sector_size : 128,
sector_count : 2,
jedec_id : 0x00202010
},
{ // Null terminating entry.
sector_size : 0,
sector_count : 0,
jedec_id : 0
}
};
--
Miłego dnia / Best regards
Jerzy
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: SPI flash driver
2010-05-11 12:49 SPI flash driver Jürgen Lambrecht
2010-05-11 13:48 ` jerzy dyrda
@ 2010-05-11 13:53 ` Nick Garnett
1 sibling, 0 replies; 3+ messages in thread
From: Nick Garnett @ 2010-05-11 13:53 UTC (permalink / raw)
To: Jürgen Lambrecht; +Cc: ecos-devel, Dries Demeulemeester
Jürgen Lambrecht <J.Lambrecht@televic.com> writes:
> Hello,
>
> We will develop a SPI flash package for a Numonyx M25P80.
> We will base it on
> ecos\packages\devs\flash\atmel\dataflash\current\cdl\devs_flash_atmel_dataflash.cdl.
> And make this: ecos\packages\devs\flash\numonyx\spiflash\...
>
> Is it OK to do it this way?
There is already a driver for the M25Pxx family in
ecos/packages/devs/flash/spi/m25pxx.
It was developed for the STM32 Cortex-M3 port, but should be easy to
use on any other target. I believe the driver already supports all
current M25Pxx parts, including the M25P80.
--
Nick Garnett eCos Kernel Architect
eCosCentric Limited http://www.eCosCentric.com The eCos experts
Barnwell House, Barnwell Drive, Cambridge, UK. Tel: +44 1223 245571
Registered in England and Wales: Reg No: 4422071
** Visit us at the Embedded Masterclass, Reading, 11 May 2010 **
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^ permalink raw reply [flat|nested] 3+ messages in thread