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J Replied at
@kanken6174 不建议修改引脚驱动能力,因为i2c协议要求总线为弱上拉,提高IO驱动能力会使之变成强上拉
当VCC为1.8V时,上拉电阻应选用2K 当VCC为3.3V时,上拉电阻应选用4.7K
若无法正常使用,应排查走线质量与信号干扰。
M Replied at
@zxyuser
787f5c35-4f0a-4cfe-ba04-ac8168cc9c6c-{WKECG.png
发现是 ctp_wakeup gt911复位引脚配置错了,现在纠正过来,
重启40次都正常了:
a1195b52-08a0-424f-8f55-f23303.png