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Updated README file, cosmetic changes to comments and debug output

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This commit is contained in:
Gregory Nutt
2014-07-30 10:19:09 -06:00
parent 812db2e5ae
commit df57bd319d
1 changed files with 13 additions and 8 deletions
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configs/sama5d4-ek/README.txt
+13 -8
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@@ -1592,7 +1592,10 @@ HSMCI Card Slots
Auto-Mounter
============
NuttX implements an auto-mounter than can make working with SD cards easier. With the auto-mounter, the file system will be automatically mounted when the SD card in the SD card is inserted into the HSMCI slot and automatically unmounted when the SD card is removed.
NuttX implements an auto-mounter than can make working with SD cards
easier. With the auto-mounter, the file system will be automatically
mounted when the SD card is inserted into the HSMCI slot and automatically
unmounted when the SD card is removed.
Here is a sample configuration for the auto-mounter:
@@ -1607,6 +1610,13 @@ Auto-Mounter
CONFIG_SAMA5D4EK_HSMCI0_AUTOMOUNT_DDELAY=1000
CONFIG_SAMA5D4EK_HSMCI0_AUTOMOUNT_UDELAY=2000
WARNING: SD cards should never be removed without first unmounting
them. This is to avoid data and possible corruption of the file
system. Certainly this is the case if you are writing to the SD card
at the time of the removal. If you use the SD card for read-only access,
however, then I cannot think of any reason why removing the card without
mounting would be harmful.
USB Ports
=========
@@ -3786,12 +3796,6 @@ Configurations
disabled; there was a problem at one time but that has probably
been fixed. HSCMI with TX DMA re-enabled needs to be verified.
There does seem to be an issue with removing then re-inserting
an SD card. In that case, the SD card will fail to mount the
when the card is re-inserted. Hopefully this problem will be
fixed before you read this (in which case, I forgot to remove
this note).
13. Networking is supported via EMAC0. See the "Networking" section
above for detailed configuration settings. DHCP is not used in
this configuration; rather, a hard-coded IP address of 10.0.0.2 is
@@ -4225,7 +4229,8 @@ To-Do List
to be verified by re-enabled HSMCI TX DMA.
Also, CONFIG_MMCSD_MULTIBLOCK_DISABLE=y is set to disable multi-block
transfers.
transfers. The is very low priority to me but might be important to you
if you are need very high performance SD card accesses.
3) There is a kludge in place in the Ethernet code to work around a problem
that I see. The problem that I see is as follows: