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| -rw-r--r-- | book/en/src/internals/targets.md | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/book/en/src/internals/targets.md b/book/en/src/internals/targets.md index 4972e5fc..da559371 100644 --- a/book/en/src/internals/targets.md +++ b/book/en/src/internals/targets.md @@ -53,7 +53,7 @@ showing two tasks A and B where A has higher priority but shares a resource with At time *t1*, task B locks the shared resource by selectively disabling all other tasks which share the resource using the NVIC. In effect this raises the virtual priority ceiling. Task A is one such task that shares resources with task B. At time *t2*, task A is either spawned by task B or becomes -pending through an interrupt condition, but does not yet preempt task B even though it's priority is +pending through an interrupt condition, but does not yet preempt task B even though its priority is greater. This is because the NVIC is preventing it from starting due to task A's source mask being disabled. At time *t3*, task B releases the lock by re-enabling the tasks in the NVIC. Because task A was pending and has a higher priority than task B, it immediately preempts task B and is |