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cc2530定时器模拟PWM信号,RF的干扰很大

Other Parts Discussed in Thread: CC2530

最近在用CC2530做一个东西,需要用到pwm输出控制其他的设备,pwm信号用的是定时器1来定时的,用IO口来模拟的 ,由于硬件限制,没法用定时器的比较功能 来实现;当打开RF时,PWM的脉宽变化很大,如果关掉RF,PWM信号则正常,不知道为何会这样?改变中断的优先级,也没什么变化,RF接收的中断差不多10ms才一次  。 各位有知道的 ,帮帮忙解惑下, 谢谢了