I would like to know how to configure RCC on my evaluation Board STM32L552E-EV.

[DYann.1]

I connect my I2C but when I connect an oscilloscope I have nothing on the clock signal. So probably I misconfigured my clock. Could you give me the information? Thanks in advance.

In this picture below I've a warning, do you know how to remove this warning please ?

Thank you for your helps.

Regards

Yann DO

[DYann.1]

Hi,

All is correct after me. Do you have a working example for me to check the I2C communication ?

[Foued_KH]

You can refer to the I2C WIKI : Getting started with I2C - stm32mcu

Also  you can refer to the CubeFW to find the I2C examples : STM32Cube\Repository\STM32Cube_FW_L5_V1.4.0\Projects\

Foued

[DYann.1]

Hi,

I know what i's I2C and how does it work. Someting tells me this is the evaluation board clock configuration. The I2C clock is a derivative of the main clock, that why in my previous message I would like to test the function Delay.

I'll see the example but after me it does not exist on this evaluation board, let me check this information.

[DYann.1]

That confirm my thoughts :

[Karl Yamashita]

You can use this I2C example. It's the same STM32L5 family and not tied to a specific development board.

[DYann.1]

I can locate the error inside the function

And the error is that this point

I don't know the signification of this error. Do you have any idea ?

[DYann.1]

It's very strange when I come back to the '.ioc' I have a error and I selected resolve the error automatically. Now I have this configuration :

Normally the value is 8 but now it's 16. So I cant try again.

[DYann.1]

I have a warning :

Implicit declaration what does it means ?

But it's not very important, I can working. Now I have the clock on the SCL (just to have pull-up inside no pull-up).

But I have always the same error

[Karl Yamashita]

Did you add the prototypes?

[DYann.1]

Yes I have developed prototypes but the error comes from SysTick as I sent you an email. How to configure the SysTick with my evaluation Board STM32L552E-EV ? Just to check if my board still works.

[DYann.1]

Hi,

Sorry I have another error :

buff[0] had to make a shift. But I have always the same error.

[Karl Yamashita]

Explain your error.

And use the code snippet icon to add code instead of images. Makes it easier to copy code.

[DYann.1]

Hi,

As I say before I modify my code to check the SysTick function

int main(void)
{
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */
 
 /* MCU Configuration--------------------------------------------------------*/
 
 /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
 HAL_Init();
 
 /* USER CODE BEGIN Init */
 
 /* USER CODE END Init */
 
 /* Configure the system clock */
 SystemClock_Config();
 
/* Configure the peripherals common clocks */
 PeriphCommonClock_Config();
 
 /* USER CODE BEGIN SysInit */
 
 /* USER CODE END SysInit */
 
 /* Initialize all configured peripherals */
 MX_GPIO_Init();
 MX_I2C1_Init();
 MX_SAI1_Init();
 /* USER CODE BEGIN 2 */
 
 HAL_Delay(50);
 HAL_Delay(50);
 // SGTL5000_init();
 // set_volume(0);
 
 /* USER CODE END 2 */
 
 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
 while (1)
 {
 /* USER CODE END WHILE */
 
 /* USER CODE BEGIN 3 */
 }
 /* USER CODE END 3 */
}

And inside my function Hal_Delay (50), I'm always stuck in this line

__weak void HAL_Delay(uint32_t Delay)
{
 uint32_t tickstart = HAL_GetTick();
 uint32_t wait = Delay;
 
 /* Add a period to guaranty minimum wait */
 if (wait < HAL_MAX_DELAY)
 {
 wait += (uint32_t)uwTickFreq;
 }
 
 while ((HAL_GetTick() - tickstart) < wait)
 {
 }
}

And inside this function, it never returns to the calling function

__weak uint32_t HAL_GetTick(void)
{
 return uwTick;
}

 Do you know how to configure the SysTick of my evaluation board STM32L552E-EV ?