Raspberry Pi 3.0 i2c SMBus的问题
[英]Issue with Raspberry pi 3.0 i2c SMBus
问题描述
I am new to the raspberry pi and I have been working through some i2c examples. 
我是树莓派的新手，我一直在研究一些i2c示例。 I am receiving an IO Error: [Errno 22]Invalid argument when I run the code below: 我运行以下代码时收到IO错误：[Errno 22]无效的参数 ：
import smbus
bus = smbus.SMBus(1)
addr = 0xa0
data = 0x20
bus.write_byte(addr, data)
Would someone please explain why this might be happening? 有人可以解释为什么会这样吗？ I can see the device using the i2cdetect in the terminal but my code is failing. 我可以在终端中使用i2cdetect看到该设备，但是我的代码失败了。 Any help would be greatly appreciated. 任何帮助将不胜感激。
1 个解决方案
解决方案1
0 2019-06-29 17:17:39
This might happen when you use an invalid address in the function. 当您在函数中使用无效地址时，可能会发生这种情况。 You can check addr is correct or not. 您可以检查addr是否正确。 Please have a look on slave address. 请看一下从站地址。
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