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| author | Gregory Nutt <gnutt@nuttx.org> | 2014-11-27 09:14:00 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2014-11-27 09:14:00 -0600 |
| commit | 6644cc6ae84106f5a5a2c4e226aa599858fd485f (patch) | |
| tree | 826dcaf373e0bb7bad338fc37ed2f045fb3ae8e4 | |
| parent | e49fc3ada34d3cc8098372ebaf048ce76e42636a (diff) | |
| download | px4-nuttx-6644cc6ae84106f5a5a2c4e226aa599858fd485f.tar.gz px4-nuttx-6644cc6ae84106f5a5a2c4e226aa599858fd485f.tar.bz2 px4-nuttx-6644cc6ae84106f5a5a2c4e226aa599858fd485f.zip | |
EEPROM: Add a README file
| -rw-r--r-- | nuttx/Documentation/README.html | 2 | ||||
| -rw-r--r-- | nuttx/README.txt | 2 | ||||
| -rw-r--r-- | nuttx/drivers/eeprom/spi_xx25xx.c | 2 | ||||
| -rw-r--r-- | nuttx/drivers/mtd/README.txt | 14 |
4 files changed, 19 insertions, 1 deletions
diff --git a/nuttx/Documentation/README.html b/nuttx/Documentation/README.html index 8e58d0701..35512e365 100644 --- a/nuttx/Documentation/README.html +++ b/nuttx/Documentation/README.html @@ -260,6 +260,8 @@ | | | `- <a href="http://sourceforge.net/p/nuttx/git/ci/master/tree/nuttx/configs/zp214xpa/README.txt"><b><i>README.txt</i></b></a> | | `- <a href="http://sourceforge.net/p/nuttx/git/ci/master/tree/nuttx/configs/README.txt"><b><i>README.txt</i></b></a> | |- drivers/ + | | |- eeprom/ + | | | `- <a href="http://sourceforge.net/p/nuttx/git/ci/master/tree/nuttx/drivers/eeprom/README.txt"><b><i>README.txt</i></b></a> | | |- lcd/ | | | `- <a href="http://sourceforge.net/p/nuttx/git/ci/master/tree/nuttx/drivers/lcd/README.txt"><b><i>README.txt</i></b></a> | | |- mtd/ diff --git a/nuttx/README.txt b/nuttx/README.txt index 1bef4adf4..e15c48d25 100644 --- a/nuttx/README.txt +++ b/nuttx/README.txt @@ -1216,6 +1216,8 @@ nuttx | | `- README.txt | `- README.txt |- drivers/ + | |- eeprom/ + | | `- README.txt | |- lcd/ | | `- README.txt | |- mtd/ diff --git a/nuttx/drivers/eeprom/spi_xx25xx.c b/nuttx/drivers/eeprom/spi_xx25xx.c index cf2403952..95d86603a 100644 --- a/nuttx/drivers/eeprom/spi_xx25xx.c +++ b/nuttx/drivers/eeprom/spi_xx25xx.c @@ -33,7 +33,7 @@ * ****************************************************************************/ -/* This is a driver for SPI EEPROMs that uses the same commands as the +/* This is a driver for SPI EEPROMs that use the same commands as the * 25AA160. * * Write time 5ms, 6ms for 25xx1025 (determined automatically with polling) diff --git a/nuttx/drivers/mtd/README.txt b/nuttx/drivers/mtd/README.txt index 5331155f8..85146c884 100644 --- a/nuttx/drivers/mtd/README.txt +++ b/nuttx/drivers/mtd/README.txt @@ -8,6 +8,20 @@ MTD README See include/nuttx/mtd/mtd.h for additional information. +EEPROM +====== + EEPROMs are a form of Memory Technology Device (MTD). EEPROMs are non- + volatile memory like FLASH, but differ in underlying memory technology and + differ in usage in many respects: They may not be organized into blocks + (at least from the standpoint of the user) and it is not necessary to + erase the EEPROM memory before re-writing it. In addition, EEPROMs tend + to be much smaller than FLASH parts, usually only a few kilobytes vs + megabytes for FLASH. EEPROM tends to be used to retain a small amount of + device configuration information; FLASH tends to be used for program or + massive data storage. For these reasons, it may not be convenient to use + the more complex MTD interface but instead use the simple character + interface provided by the EEPROM drivers. See drivers/eeprom. + NAND MEMORY =========== |