使用TQ2440自带的内核,读取时钟芯片AT24C02,失败。求解
[root@EmbedSky /]# ./i2c_rw
Writing 0x00-0xff into AT24C02
0000| ff fe s3c2440-i2c s3c2440-i2c: cannot get bus (error -110)
s3c2440-i2c s3c2440-i2c: cannot get bus (error -110)
iic write erroriic write error !fd s3c2440-i2c s3c2440-i2c: cannot get bus (error -110)
^Cs3c2440-i2c s3c2440-i2c: cannot get bus (error -110)