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12樓  發(fā)表于: 2023-01-06 13:42
對我們搞單片機出身的人來(lái)說(shuō),根本不叫事
不管10ms還是1ms,開(kāi)定時(shí)器中斷寫(xiě)一個(gè)tick++就完事了,有了時(shí)基信號,剩下的時(shí)鐘可以自己隨便做

剩下的就是數值比較,tick_cmp(10)不過(guò)就是在首次調用的時(shí)候存儲一個(gè)當前的tick值加上目標時(shí)間,即tick_t = tick+10,然后輸出tick_t對tick的比較結果就行了.

唯一要注意的是因為大部分PLC特別是日系存儲器是16位的,要考慮溢出的情況,但是大部分情況下都沒(méi)問(wèn)題
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