Two bugs in CubeMX 6.15 code generation with STM32U031e Low Layer libraries

[cb.7]

The first case concerns the DAC, by setting "Output Buffer" = Disable in CubeMX, it is enabled in code generation instead, i had to add "DAC1->MCR = 0x03" in the initializations.

/**
  * @brief DAC1 Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_DAC1_Init(void)
{

  /* USER CODE BEGIN DAC1_Init 0 */

  /* USER CODE END DAC1_Init 0 */

  LL_DAC_InitTypeDef DAC_InitStruct = {0};

  /* Peripheral clock enable */
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_DAC1);

  /* USER CODE BEGIN DAC1_Init 1 */

  /* USER CODE END DAC1_Init 1 */

  /** DAC channel OUT1 config
  */
  DAC_InitStruct.TriggerSource = LL_DAC_TRIG_SOFTWARE;
  DAC_InitStruct.WaveAutoGeneration = LL_DAC_WAVE_AUTO_GENERATION_NONE;
  DAC_InitStruct.OutputConnection = LL_DAC_OUTPUT_CONNECT_INTERNAL;
  DAC_InitStruct.OutputMode = LL_DAC_OUTPUT_MODE_NORMAL;
  LL_DAC_Init(DAC1, LL_DAC_CHANNEL_1, &DAC_InitStruct);
  LL_DAC_DisableTrigger(DAC1, LL_DAC_CHANNEL_1);
  /* USER CODE BEGIN DAC1_Init 2 */

  /* USER CODE END DAC1_Init 2 */

}

The second case concerns IWDG, which generates the string "__HAL_RCC_IWDG_CLK_ENABLE()" which

obviously causes compilation to fail. I solved it by adding " #ifdef BUG_CLK_IWDG "

/**
  * @brief IWDG Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_IWDG_Init(void)
{

  /* USER CODE BEGIN IWDG_Init 0 */
#ifdef BUG_CLK_IWDG
  /* USER CODE END IWDG_Init 0 */

  /* Peripheral clock enable */
  __HAL_RCC_IWDG_CLK_ENABLE();

  /* USER CODE BEGIN IWDG_Init 1 */
#endif
  /* USER CODE END IWDG_Init 1 */
  LL_IWDG_Enable(IWDG);
  LL_IWDG_EnableWriteAccess(IWDG);
  LL_IWDG_SetPrescaler(IWDG, LL_IWDG_PRESCALER_8);
  LL_IWDG_SetReloadCounter(IWDG, 4095);
  while (LL_IWDG_IsReady(IWDG) != 1)
  {
  }

  LL_IWDG_ReloadCounter(IWDG);
  /* USER CODE BEGIN IWDG_Init 2 */

  /* USER CODE END IWDG_Init 2 */

}

[Mahmoud Ben Romdhane]

Hello @cb.7 

First let me thank you for posting.

Your request is under investigation, and I will get back to you ASAP.

Thanks.

Mahmoud

[Mahmoud Ben Romdhane]

Hello @cb.7 ,

Thank you for bringing these issues to our attention.

Related to the first problem (DAC Peripheral), an internal ticket is raised to the dedicated team

( Ticket Number : 214226 ).

Related to the second problem (IWDG Peripheral), an internal ticket is raised to the dedicated team

( Ticket Number : 214196 ).

Thanks.

Mahmoud

[SPozz.1]

Hello Mahmoud,
a third case came up:

static void MX_CRC_Init(void)
{

  /* USER CODE BEGIN CRC_Init 0 */

  /* USER CODE END CRC_Init 0 */

  /* Peripheral clock enable */
  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_CRC);

  /* USER CODE BEGIN CRC_Init 1 */

  /* USER CODE END CRC_Init 1 */
  LL_CRC_SetInputDataReverseMode(CRC, CRC_INPUTDATA_INVERSION_BIT_BYBYTE);
  LL_CRC_SetOutputDataReverseMode(CRC, CRC_OUTPUTDATA_INVERSION_BIT);
  LL_CRC_SetInitialData(CRC, 0xFFFF);
  LL_CRC_SetPolynomialCoef(CRC, 32773);
  LL_CRC_SetPolynomialSize(CRC, LL_CRC_POLYLENGTH_16B);
  /* USER CODE BEGIN CRC_Init 2 */

  /* USER CODE END CRC_Init 2 */

}

workaround added in main.c

/* USER CODE BEGIN CRC_Init 0 */
#define CRC_INPUTDATA_INVERSION_BIT_BYBYTE LL_CRC_INDATA_REVERSE_BIT_BYBYTE
#define CRC_OUTPUTDATA_INVERSION_BIT LL_CRC_OUTDATA_REVERSE_BIT
/* USER CODE END CRC_Init 0 */

Best regards,
Stefano

[Mahmoud Ben Romdhane]

Hello @SPozz.1 

Let me thank you for posting and bringing this issue to our attention.

It has been escalated to the relevant team for fixing (Internal ticket number: 214506 Internal ticket number is only for reference, not accessible or usable outside of ST).

Best Regards.

Mahmoud