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GPIO6[12]和GPIO6[13]设置为输出，管脚值设置为低电平0，这两个管脚连的是Led灯，理论上输出低电平时Led灯熄灭，实际情况是并没有熄灭，我想问这样的OUT_DATA67和IN_DATA67正常么？为什么感觉未能成功控制IO口电压呢？
遇到过和你一样的问题
当时是由于bank片内上下拉引起的，见下图
把上下拉关掉应该就可以了
