This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DS90UB925Q-Q1: 925和926配置寄存器后通讯线路被拉低

Part Number: DS90UB925Q-Q1


我参考了一个触屏项目是同样使用925和926,结构是host ic<-->925(地址0x18)----926(地址0x58)<-->屏幕。在上电后host读0x06寄存器后识别到926的地址0x58,开始往925写入{0x03 , 0xDA}, {0x17,0xde}, {0xc6,0x21},往926写入{0x26,0x25}, {0x27,0x25},然后host通过0x96地址进行写入通讯。

而我按这个配置后,从host端发出的I2C通讯在926没有波形出现,反而将926这边的I2C电平拉低,参考项目项目没有配置slave id 和 Alias 可以使用。