Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-06-04 23:03:27 +08:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

Mirtoo README.txt and SST25 comments update

Browse Source 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4874 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2012-06-27 00:03:05 +00:00
parent 9c6f252259
commit 2fc50198b2
2 changed files with 23 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
configs/mirtoo/README.txt
+20 -8
View File
@@ -821,13 +821,14 @@ Where <subdir> is one of the following:
nxffs: nxffs:
This is a configuration very similar to the nsh configuration. This This is a configuration very similar to the nsh configuration. This
configure also provides the NuttShell (NSH). This configuration use configure also provides the NuttShell (NSH). And this configuration use
UART1 which is available on FUNC 4 and 5 on connector X3 (as described UART1 which is available on FUNC 4 and 5 on connector X3 (as described
for the nsh configuration). This configuration differs in the fillowing for the nsh configuration). This configuration differs from the nsh
ways: configuration in the following ways:
1) SPI2 is enabled and support is included for the NXFFS file system 1) SPI2 is enabled and support is included for the NXFFS file system
on the 32Mbi SST25 device on the Mirtoo board. on the 32Mbit SST25 device on the Mirtoo board. NXFFS is the NuttX
wear-leveling file system.
CONFIG_PIC32MX_SPI2=y CONFIG_PIC32MX_SPI2=y
CONFIG_MTD_SST25=y CONFIG_MTD_SST25=y
@@ -866,12 +867,15 @@ Where <subdir> is one of the following:
CONFIG_NSH_DISABLE_TEST=y CONFIG_NSH_DISABLE_TEST=y
CONFIG_NSH_DISABLE_WGET=y CONFIG_NSH_DISABLE_WGET=y
When the system boots, you should have the NXFFS file system mounted
at /mnt/sst25.
NOTES: (1) It takes many seconds to boot the sytem using the NXFFS NOTES: (1) It takes many seconds to boot the sytem using the NXFFS
file system because the entire FLASH must be verified on power up file system because the entire FLASH must be verified on power up
(a probably several minutes the first time that NXFFS comes up and (and many *minutes* the first time that NXFFS comes up and has to
had to format the file system). (2) FAT does not have these delays format the file system). (2) FAT does not have these delays and this
and this configuration can be modified to use the (larger) FAT file configuration can be modified to use the (larger) FAT file system as
system as described below: described below:
fat: fat:
There is no FAT configuration, but the nxffx configuration can be used There is no FAT configuration, but the nxffx configuration can be used
@@ -881,3 +885,11 @@ Where <subdir> is one of the following:
CONFIG_FS_NXFFS=n CONFIG_FS_NXFFS=n
CONFIG_FS_FAT=y CONFIG_FS_FAT=y
CONFIG_NSH_DISABLE_MKFATFS=n CONFIG_NSH_DISABLE_MKFATFS=n
In this configuration, the FAT file system will not be automatically
monounted. When NuttX boots to the NSH prompt, you will find the
SST5 block driver at /dev/mtdblock0. This can be formatted with a
FAT file system and mounted with these commands:
nsh> mkfatfs /dev/mtdblock0
nsh> mount -t vfat /dev/mtdblock0 /mnt/sst25
drivers/mtd/sst25.c
+3 -3
View File
@@ -60,9 +60,9 @@
* Pre-processor Definitions * Pre-processor Definitions
************************************************************************************/ ************************************************************************************/
/* Configuration ********************************************************************/ /* Configuration ********************************************************************/
/* Per the data sheet, the SST25 parts can be driven with either SPI mode 0 (CPOL=0 and /* Per the data sheet, the SST25 parts can be driven with either SPI mode 0 (CPOL=0
* CPHA=0) or mode 3 (CPOL=1 and CPHA=1). But I have heard that other devices can * and CPHA=0) or mode 3 (CPOL=1 and CPHA=1). But I have heard that other devices
* operated in mode 0 or 1. So you may need to specify CONFIG_SST25_SPIMODE to * can operate in mode 0 or 1. So you may need to specify CONFIG_SST25_SPIMODE to
* select the best mode for your device. If CONFIG_SST25_SPIMODE is not defined, * select the best mode for your device. If CONFIG_SST25_SPIMODE is not defined,
* mode 0 will be used. * mode 0 will be used.
*/ */