{"id":4251,"date":"2020-12-15T11:47:42","date_gmt":"2020-12-15T11:47:42","guid":{"rendered":"http:\/\/fastbitlab.com\/?p=4251"},"modified":"2023-09-06T15:41:26","modified_gmt":"2023-09-06T10:11:26","slug":"stm32-i2c-lecture-25-exercise-introduction","status":"publish","type":"post","link":"https:\/\/fastbitlab.com\/blog\/stm32-i2c-lecture-25-exercise-introduction\/","title":{"rendered":"STM32 I2C Lecture 25- Exercise: Introduction"},"content":{"rendered":"
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Exercise: Introduction<\/span><\/strong><\/h1>\n
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In this article, let\u2019s do the exercise for I2C master (STM) and slave (Arduino) communication. When the button on the master is pressed, the master should send data to the Arduino slave connected. The data received by the Arduino will be displayed on the Arduino serial port.<\/span><\/p>\n

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  1. Use I2C SCL=100KHz (Standard mode)<\/span><\/li>\n
  2. Use internal pull-up resistors for SDA and SCL lines. No need to use external pull-up resistors.<\/span><\/li>\n<\/ol>\n
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    Things needed for the exercise:<\/b><\/span><\/p>\n

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    1. Arduino board<\/span><\/li>\n
    2. ST board<\/span><\/li>\n
    3. Some jumper wires<\/span><\/li>\n
    4. Breadboard<\/span><\/li>\n
    5. 2 pull-up resistors of value 4.7<\/span>k\u03a9 (only if your pin doesn\u2019t support internal pull-up resistors).<\/span><\/span><\/li>\n<\/ol>\n

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      Connections:<\/b><\/span><\/p>\n

      Connections for this exercise are shown in Figure 1.<\/span><\/p>\n