When init dsi the func ran into Error_Handler,bucause of HAL_TIMEOUT

[99]

- MCU ： STM32U5F9VJT

- HAL 驱动程序版本号：V1.6.0

当 init dsi de flag DSI_FLAG_PLLLS始终为 0.检查 enable 寄存器时，标志是可以的。

  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_DSI;
    PeriphClkInit.DsiClockSelection = RCC_DSICLKSOURCE_PLL3;
    PeriphClkInit.PLL3.PLL3Source = RCC_PLLSOURCE_HSE;
    PeriphClkInit.PLL3.PLL3M = 4;
    PeriphClkInit.PLL3.PLL3N = 125;
    PeriphClkInit.PLL3.PLL3P = 8;
    PeriphClkInit.PLL3.PLL3Q = 2;
    PeriphClkInit.PLL3.PLL3R = 24;
    PeriphClkInit.PLL3.PLL3RGE = RCC_PLLVCIRANGE_0;
    PeriphClkInit.PLL3.PLL3FRACN = 0;
    PeriphClkInit.PLL3.PLL3ClockOut = RCC_PLL3_DIVP;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
    {
      Error_Handler();
    }
//the clock of dsi 


  hdsi.Instance = DSI;
  hdsi.Init.AutomaticClockLaneControl = DSI_AUTO_CLK_LANE_CTRL_DISABLE;
  hdsi.Init.TXEscapeCkdiv = 4;
  hdsi.Init.NumberOfLanes = DSI_TWO_DATA_LANES;
  hdsi.Init.PHYFrequencyRange = DSI_DPHY_FRANGE_450MHZ_510MHZ;
  hdsi.Init.PHYLowPowerOffset = PHY_LP_OFFSSET_0_CLKP;
  PLLInit.PLLNDIV = 125;
  PLLInit.PLLIDF = DSI_PLL_IN_DIV4;
  PLLInit.PLLODF = DSI_PLL_OUT_DIV2;
  PLLInit.PLLVCORange = DSI_DPHY_VCO_FRANGE_800MHZ_1GHZ;
  PLLInit.PLLChargePump = DSI_PLL_CHARGE_PUMP_2000HZ_4400HZ;
  PLLInit.PLLTuning = DSI_PLL_LOOP_FILTER_2000HZ_4400HZ;
  if (HAL_DSI_Init(&hdsi, &PLLInit) != HAL_OK)
  {
    Error_Handler();
  }
//the init of sdi 

[99]

  DSI_ConfigBandControl(hdsi);

  /* Set PLL Tuning */
  DSI_SetWrapperPLLTuning(hdsi, PLLInit);

  /* Enable the DSI PLL */
  __HAL_DSI_PLL_ENABLE(hdsi);

  /* Requires min of 400us delay before reading the PLLLS flag */
  /* 1ms delay is inserted that is the minimum HAL delay granularity */

  HAL_Delay(1);

  /* Get tick */
  tickstart = HAL_GetTick();

  /* Wait for the lock of the PLL */
  while (__HAL_DSI_GET_FLAG(hdsi, DSI_FLAG_PLLLS) == 0U)
  {
    /* Check for the Timeout */
    if ((HAL_GetTick() - tickstart) > DSI_TIMEOUT_VALUE)
    {
      return HAL_TIMEOUT;   // the error 
    }
  }

[KDJEM.1]

Hello @99 and welcome to the Community ;

Could you please refer to DSI example and check the PLL configuration. may this example can help you.

Please make that the HSE is ON and READY before starting DSI (as DSI PLL source is HSE).

Please try to increase the delay before verifying the PLLLS flag (3ms for example).

I hope this help you.

Please let me know if the issue is solved or not?

Thank you.

Kaouthar

[99]

it does not work .

i check the colock is same with DSI example.

[KDJEM.1]

Hello @99 ,

Are you use a STM32 board?

Could you please try to decrease the DSI Clock ?

Thank you.

Kaouthar