大家好,
我在调试uboot 2016.03时,使用i2c lcd屏,使用i2c2接口。
通过i2c_init函数注册,然后设置i2c bus num,最后i2c probe。
目前在读写i2c设备时,提示“i2c_write:error waiting for addr ACK (status = 0x116)”
在uboot命令行通过i2c probe命令你查看设备地址,显示“valid chip addresses:”显示为空,请问这是怎么回事呢?是i2c设备注册失败吗?
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大家好,
我在调试uboot 2016.03时,使用i2c lcd屏,使用i2c2接口。
通过i2c_init函数注册,然后设置i2c bus num,最后i2c probe。
目前在读写i2c设备时,提示“i2c_write:error waiting for addr ACK (status = 0x116)”
在uboot命令行通过i2c probe命令你查看设备地址,显示“valid chip addresses:”显示为空,请问这是怎么回事呢?是i2c设备注册失败吗?