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void pmu_set_led2_value(uint8_t value);这个函数不能控制LED2，用这个ool_write(PMU_REG_LED_CTRL, 0x00);能控制LED2，但是会影响LCD背光，怎么解决
@cheng 在 LED2的控制 中说：
个ool_write(PMU_REG_L
这样把好多引脚的值都修改了
那要怎么单独控制呢
@cheng pmu_set_led2_value LED2 控制不了高低电平吗?
@kawhi 是的，用这个函数控制不了LED2