API is not coming up outside of the function body

[demir]

Hi,

I am trying to add HAL_I2C_Mem_Read into my application. However, when I write the API in the region below, it is not auto filled, I can not use the API. On the other hand, when I add the API inside the above function it works.

How can I fix this ?

I have already added #include "stm32f4xx_hal_i2c.h" as header file.

Thanks.

[SofLit]

Hello,

What is this?

[demir]

I have deliberately pointed out that to show there is no auto fill when I start to type HAL_I2C_M in that region, on the contrary when I start to type in the function body as HAL_I2C_M and press space, then I see the API in the suggestion list that is HAL_I2C_Mem_Read()

In brief, my question is that, why HAL_I2C_Mem_Read is not useable outside of the function body ?

[Andrew Neil · Accepted solution]

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@demir wrote:

I have already added #include "stm32f4xx_hal_i2c.h" as header file.

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You shouldn't need to do that manually.

Once you enable & configure I2C in the CubeIDE Device Configuration Tool (or CubeMX), and re-generate the code, it should do all this for you.

These are for L4 rather than F4, but should give the idea:

STM32L4 training: 05.5 Communication peripherals - Inter-integrated circuit interface (I2C) theory:

https://www.youtube.com/watch?v=e4F_7WcYkdU&list=PLnMKNibPkDnEEvQWrDqVuu1w_iQ214GXi&index=31

STM32L4 training: 05.6 Communication peripherals - Hands-on I2C:

https://www.youtube.com/watch?v=_SuRDVcDaMo&list=PLnMKNibPkDnEEvQWrDqVuu1w_iQ214GXi&index=32