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I2C communication - sequence diagram

2022-07-25 17:29:00 【free(me)】

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Preface
One 、 Send the start signal + Slave device address + Write the direction + Answer signal
Two 、 Send register address + Answer signal
3、 ... and 、 Send the start signal again + Slave address + Reading direction + Answer signal
Four 、8 Bit data + Host response signal
5、 ... and 、8 Bit data + The host sends a non reply signal + End signal

Preface

This paper uses logic analyzer to grab the host I2C Sequence diagram of communication , The process of fetching is to read the value of a register .

One 、 Send the start signal + Slave device address + Write the direction + Answer signal

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Two 、 Send register address + Answer signal

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3、 ... and 、 Send the start signal again + Slave address + Reading direction + Answer signal

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Four 、8 Bit data + Host response signal

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5、 ... and 、8 Bit data + The host sends a non reply signal + End signal

Insert picture description here

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https://yzsam.com/2022/206/202207251719264915.html

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