TIM4->SR=TIM4->SR &0XA1A0;
时间: 2024-06-06 09:07:33 浏览: 19
& ~(1<<0);
This clears the update interrupt flag bit (UIF) in the status register (SR) of Timer 4 (TIM4). The bitwise AND operation with the complement of a bitmask (in this case, a bitmask with a 1 in the least significant bit position) effectively clears that bit in the register.
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TIM4->SR=TIM4->SR&0XA1A0
& ~(1<<0);
This code clears the update interrupt flag (UIF) in the status register (SR) of timer 4. The bitmask "(1<<0)" is used to select the first bit, which corresponds to the UIF. By performing a bitwise NOT operation on this bitmask and then ANDing it with the SR, we clear the UIF bit while leaving all other bits unchanged. The result is then written back to the SR register. This code is typically used in the interrupt service routine (ISR) for timer 4, to acknowledge and clear the interrupt flag after the update event has been handled.
TIM10->SR = 0x03
TIM10->SR = 0x03是STM32中定时器TIM10的状态寄存器(SR)的赋值操作。这个操作的含义是将TIM10的状态寄存器中的中断标志位清零,其中0x03表示清除TIM10的更新中断标志和触发中断标志。定时器中断是在定时器计数满或者比较事件发生时被触发的,通过清除中断标志位可以避免重复触发中断。
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