海思3518EV300+SC2235 I2C无法通信

qn1567584233 · 发表于 2019-9-4 16:09:56

sensor的地址是0x60，我用i2c读取时timeout,然后测试各种地址都是timeout，求热心网友帮忙看一下

~ # i2cdump -f -y 1 0x60
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
^VXX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX hibvt-i2c 12061000.i2c: wait idle timeout, RIS: 0x10, SR: 0xa0000
XX XXXXXXXXXXXXXXXX

zzzzzl · 发表于 2019-10-10 10:44:41

我问题也类似，请问怎么解决的

qn1519888678 · 发表于 2019-10-14 10:55:34

PWDNB 引脚一定要为高电平

eken · 发表于 2021-2-11 15:12:21

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[hi3518] 海思3518EV300+SC2235 I2C无法通信