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rINTPND同时有多位为‘1’,导致死机,查看手册
NOTES:
1. If the FIQ mode interrupt occurs, the corresponding bit of INTPND will not be turned on as the INTPND register is
available only for IRQ mode interrupt.
2. Cautions in clearing the INTPND register.
The INTPND register is cleared to "0" by writing "1". If the INTPND bit, which has "1", is cleared by "0", the INTPND
register & INTOFFSET register may have unexpected value in some case.
So, you never write "0" on the INTPND bit having "1". The convenient method to clear the INTPND register is writing the
INTPND register value on the INTPND register.
仔细查程序没有类似操作地方。
请问是否有其它操作也会引起这种异常现象 |
阿莫论坛20周年了!感谢大家的支持与爱护!!
一只鸟敢站在脆弱的枝条上歇脚,它依仗的不是枝条不会断,而是自己有翅膀,会飞。
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