diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/openocd.texi | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/doc/openocd.texi b/doc/openocd.texi index 716c4523..d80ef492 100644 --- a/doc/openocd.texi +++ b/doc/openocd.texi @@ -1253,7 +1253,7 @@ to source such a config file twice, with different values for @code{CHIPNAME}, so it adds a different TAP each time. -If there are one or more nonzero @option{-expected-id} values, +If there are nonzero @option{-expected-id} values, OpenOCD attempts to verify the actual tap id against those values. It will issue error messages if there is mismatch, which can help to pinpoint problems in OpenOCD configurations. @@ -2373,11 +2373,13 @@ You may use @code{-enable} to highlight the default state (the TAP is linked in). @xref{Enabling and Disabling TAPs}. @item @code{-expected-id} @var{number} -@*A non-zero value represents the expected 32-bit IDCODE -found when the JTAG chain is examined. +@*A non-zero @var{number} represents a 32-bit IDCODE +which you expect to find when the scan chain is examined. These codes are not required by all JTAG devices. @emph{Repeat the option} as many times as required if more than one ID code could appear (for example, multiple versions). +Specify @var{number} as zero to suppress warnings about IDCODE +values that were found but not included in the list. @item @code{-ircapture} @var{NUMBER} @*The bit pattern loaded by the TAP into the JTAG shift register on entry to the @sc{ircapture} state, such as 0x01. |