{"id":4258,"date":"2020-12-16T04:30:38","date_gmt":"2020-12-16T04:30:38","guid":{"rendered":"http:\/\/fastbitlab.com\/?p=4258"},"modified":"2023-09-06T15:50:28","modified_gmt":"2023-09-06T10:20:28","slug":"exercise-i2c-master-and-slave-communication","status":"publish","type":"post","link":"https:\/\/fastbitlab.com\/blog\/exercise-i2c-master-and-slave-communication\/","title":{"rendered":"STM32 I2C Lecture 26 – Exercise: Coding Part 1"},"content":{"rendered":"
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Exercise: Coding Part 1<\/b><\/span><\/h1>\n
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Let\u2019s implement the master and slave communication exercise.<\/span><\/p>\n

1. Go to the source and create a new file, as shown in Figure 1.<\/span><\/p>\n

\"Exercise:
Figure 1. Creation of new source file.<\/span><\/figcaption><\/figure>\n

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2. After clicking the finish button, a new source file is created, as shown in Figure 2.<\/span><\/p>\n

\"Exercise:
Figure 2. New source file.<\/span><\/figcaption><\/figure>\n

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3. Copy <\/span>some necessary code from the old source file that may be header, delay function, and init functions, as shown in Figures 3.1, 3.2, and 3.3.<\/span><\/p>\n

\"Exercise:
Figure 3.1. Headers and delay function copied from old source file.<\/span><\/figcaption><\/figure>\n

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\"Exercise:
Figure 3.2. Inits functions copied from old source file.<\/span><\/figcaption><\/figure>\n

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\"Exercise:
Figure 3.3. GPIO_ButtonInit function copied from the old source file.<\/span><\/figcaption><\/figure>\n

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4. Create the main function, as shown in Figure 4.<\/span><\/p>\n

\"Exercise:
Figure 4. Main function.<\/span><\/figcaption><\/figure>\n

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Code for I2C1_GPIOInits()<\/b>:<\/b><\/span><\/p>\n

Here the pins are configured to behave as I2C pins (Figure 5).<\/span><\/p>\n