sequential (57) - line of power source (3)

 https://wodewangzhishime.blogspot.com/2022/06/httpswodewangzhishime_70.html

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Ref: https://kamchihau.blogspot.com/2022/09/different-frequency.html . 

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John: There're many type of communication's protocol . You might have a look . https://instrumentationblog.com/communication-protocols/. 

Me: Yes,.

John: For example, RJ45, I2C, USB, SPI, RS232, so on and on.

Me: OK.

John: Before we start, you should read the 3 articles below.

Me: OK.

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1) https://wodewangzhishime.blogspot.com/2022/02/httpswodewangzhishime_80.html

2) https://wodewangzhishime.blogspot.com/2022/02/httpswodewangzhishime_26.html

3) https://kamchihau.blogspot.com/2022/11/impact.html

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John: We use the protocol of SPI as an example.

Me: OK.

John: Look at the picture above.

Me: OK.

John: The slave use the clock line of the master.

Me: OK.

John: Normally, the master choose the clock line of SPI. Because, it is a protocol of SPI.

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Me: OK.

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John: However, hacker hack it. It Become,

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Subject [Master's register]

Interrupt [The clock line of RJ45] <---- Originally it is The clock line of SPI. You may take a look at this article (https://wodewangzhishime.blogspot.com/2022/06/httpswodewangzhishime_13.html)

Object []

Value [pending]

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John: If there's carrier wave on the clock line of RJ45, those carrier wave enter the Slave.