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2398040_zh-CN
2398040_zh-CN
FETMX6ULL-C:LCD 和 CTP 同时连接时出现随机 CTP I2C 通信错误,CTP
硬件平台:FETMX6ULL-C 核心板。
当仅连接电容式触摸面板 (CTP) GT911 时,该面板能够稳定工作,不会出现任何 I2C 错误。
同时连接液晶显示屏和CTP后,CTP上会出现随机的I2C通信异常,导致触摸功能偶尔失效。
我们怀疑液晶显示电路引入的电磁干扰导致触摸面板的 I2C 信号不稳定。
已附上相关的内核 dmesg 日志以供分析。
我们的软件环境:Linux 4.1.15电路板支持包。.
CTP通过I2C总线进行通信。我们已经检查了硬件线路和电源,但问题仍然存在。
期待您的技术建议。
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