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Add loopback support to STM32 CAN driver; Add apps/examples/can loopback test

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git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4213 7fd9a85b-ad96-42d3-883c-3090e2eb8679
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patacongo
2011-12-22 15:59:50 +00:00
parent 907471d5dc
commit bfc578860c
41 changed files with 865 additions and 68 deletions
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apps/examples/README.txt
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@@ -76,6 +76,34 @@ examples/buttons
user-space program. As a result, this example cannot be used if a
NuttX is built as a protected, supervisor kernel (CONFIG_NUTTX_KERNEL).
examples/can
^^^^^^^^^^^^
If the CAN device is configured in loopback mode, then this example can
be used to test the CAN device in loop back mode. It simple sinces a
sequence of CAN messages and verifies that those messages are returned
exactly as sent.
This test depends on these specific CAN configurations settings (your
specific CAN settings might require additional settings).
CONFIG_CAN - Enables CAN support.
CONFIG_CAN_LOOPBACK - A CAN driver may or may not support a loopback
mode for testing. The STM32 CAN driver does support loopback mode.
Specific configuration options for this example include:
CONFIG_NSH_BUILTIN_APPS - Build the CAN test as an NSH built-in function.
Default: Built as a standalone problem
CONFIG_CAN_LOOPBACK
CONFIG_EXAMPLES_CAN_DEVPATH - The path to the CAN device. Default: /dev/can0
CONFIG_EXAMPLES_CAN_NMSGS - If CONFIG_NSH_BUILTIN_APPS
is defined, then the number of loops is provided on the command line
and this value is ignored. Otherwise, this number of CAN message is
collected and the program terminates. Default: If built as an NSH
built-in, the default is 32. Otherwise messages are sent and received
indefinitely.
examples/dhcpd
^^^^^^^^^^^^^^