Tasks and interrupts can post a semaphore, but only tasks are allowed to pend for a semaphore.A timeout value can be passed to the pend function.是什么意思_Tasks and interrupts can post a semaphore, but only tasks are allowed to pend for a semaphore.A timeout value can be passed to the pend function.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句