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| author | patacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679> | 2012-04-16 21:13:54 +0000 |
|---|---|---|
| committer | patacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679> | 2012-04-16 21:13:54 +0000 |
| commit | d6bb7827132efdc10f128019ae742591896efbf4 (patch) | |
| tree | 5abb85a3671a4848e95a6a07a3fe4e8886c7632f /nuttx/configs | |
| parent | 55d814ce2d73e2005d57c7833b4f93f2c05798f8 (diff) | |
| download | px4-firmware-d6bb7827132efdc10f128019ae742591896efbf4.tar.gz px4-firmware-d6bb7827132efdc10f128019ae742591896efbf4.tar.bz2 px4-firmware-d6bb7827132efdc10f128019ae742591896efbf4.zip | |
STM32 IWDG watchdog works
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4619 7fd9a85b-ad96-42d3-883c-3090e2eb8679
Diffstat (limited to 'nuttx/configs')
| -rwxr-xr-x | nuttx/configs/stm32f4discovery/README.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/nuttx/configs/stm32f4discovery/README.txt b/nuttx/configs/stm32f4discovery/README.txt index 1ad1a2e0b..e4a676f44 100755 --- a/nuttx/configs/stm32f4discovery/README.txt +++ b/nuttx/configs/stm32f4discovery/README.txt @@ -843,3 +843,13 @@ Where <subdir> is one of the following: CONFIG_WATCHDOG=y : Enables watchdog timer driver support CONFIG_STM32_WWDG=y : Enables the WWDG timer facility, OR CONFIG_STM32_IWDG=y : Enables the IWDG timer facility (but not both) + + The WWDG watchdog is driven off the (fast) 42MHz PCLK1 and, as result, + has a maximum timout value of 49 milliseconds. for WWDG watchdog, you + should also add the fillowing to the configuration file: + + CONFIG_EXAMPLES_WATCHDOG_PINGDELAY=20 + CONFIG_EXAMPLES_WATCHDOG_TIMEOUT=49 + + The IWDG timer has a range of about 35 seconds and should not be an issue. + |