I would like to know how can I make the HAL_Delay function work. I configure the System CLock with CubeMX, when I compile the prog there is no errors but my program loops in the HAL_Delay function.

[DYann.1]

How to test only the HAL_Delay (...).

Thank you for your helps

Regards

[gbm]

Check the operation of SysTick_Handler() using the debugger. Make sure it fires correctly. If not - check what you did wrong (disabled all interrupts, misconfigured SysTick).

[Karl Yamashita]

Well if I had to guess, you're probably calling HAL_Delay from an interrupt, which will not work.

[DYann.1]

Hi,

I don't know if I use with interrupt this function HAL_Delay but It's the summary of my configuration

On the other hand, I can see the SysTick of my configuration is not configured

yet my Clock is configured, I probably missed a step. Do you know if I can find information how to activate SysTick ?

I think when you configure when you configure the Clock the SysTic is automatically configured.

Thank you for your advices

Regards

[DYann.1]

Hi,

After some changes, now I think my I2C does not work correctly. In this prototype :

The HAL_I2C_Master_Transmit return an error, probably for the same reasons. Do you know where I can find examples with I2C ?

Thank you for your helps.

Regards

[Karl Yamashita]

It could mean that the I2C slave address is invalid or a physical connection issue. You should see what the txResponse value is. Is that where the HAL_Delay is stuck? And why is a 1ms delay needed in that write function?

Also, your write function is a void and you are trying to return HAL_ERROR. The compiler should have gave you a warning about that..

You can find examples in your repository

C:\Users\<user name>\STM32Cube\Repository

[DYann.1]

Hi,

Thank you, yes I have a number of error is 1, but what does that mean ? I don't know.

Yes I have a warning but I don't know how to return a value. For the hardware (wiring and component address, all is correct). I think it comes from the Clock or SysTick. In fact the I2C need theses parameters.

I'll look at the example you gave me.

Thank you

[DYann.1]

Hi,

After browsing the directory I couldn't find the I2C example with my evaluation board.

Probably I have to look elsewhere.

[Karl Yamashita]

You can use the Nucleo example. It is the same Microcontroller.

C:\Users\<suer name>\STM32Cube\Repository\STM32Cube_FW_L5_V1.5.0\Projects\NUCLEO-L552ZE-Q\Examples\I2C

Also, i'm not sure what I2C device you're trying to write to but if it's a 16 bit register then you're not writing the value to your buff array correctly.

[DYann.1]

Hi,

I can see sevaral example but I don't know which file corresponds to my evaluation card ?

Probably I2C_TwoBoards_ComPolling may suit my needs ?

Thank you

[Pavel A.]

So is your board the Nucleo L552ZE-Q?

[DYann.1]

Hi Parvel,

No my board is 'STM32L552E-EV' but there is no example with this evaluation Board.

[DYann.1]

Hi,

No my board is 'STM32L552E-EV' but I don't have a example I2C with this board :