Cannot write TIM registers

[Remi Demers]

Hi,

Using Wise studio Version: 1.3.1_R Build id: 2023_05 on Linux with the STEVAL-IDB012V1 (BlueRNG-LPS dev. kit). I discovered that my instructions to write values in the timer registers have no effect. I found it by tracing the program while watching the register values in the register window of the debugger perspective. For example, TIM2->ARR = 3200; produce no change in the register. Same result with TIM16 and TIM17. I should miss something very basic here. It is made from the "Profiles_Peripheral_with_Library" example. All my edits are visible in the snippet below:

int main(void)
{   
  /* System Init */
  SystemInit(SYSCLK_64M, BLE_SYSCLK_32M);
  
  /* Configure IOs for power save modes */
  BSP_IO_Init();
  
  /* Configure I/O communication channel */
  BSP_COM_Init(BSP_COM_RxDataUserCb);
  
  /* Init Clock */
  Clock_Init();
  
  /* Initialize the button */
  BSP_PB_Init(USER_BUTTON, BUTTON_MODE_EXTI);
  
  // Overwrite initializations
  //My_GPIO_Settings();
  //Define_Waveform_data_buffer();
  //DMA_Based_Waveform_Settings();
  GPIOA->MODER =0x000000A0;
  LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_0, LL_GPIO_MODE_ALTERNATE);
  LL_GPIO_SetAFPin_0_7(GPIOB, LL_GPIO_PIN_0, LL_GPIO_AF_2);
  LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_1, LL_GPIO_MODE_OUTPUT);
  LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_2, LL_GPIO_MODE_OUTPUT);

  TIM2->ARR = 3200;
  TIM2->CCR1 = 1600;
  TIM2->CR1 = 0b0000000000000001;


  while(1)
  {
	  if(TIM2->CNT > 1000)
	      LL_GPIO_SetOutputPin(GPIOB, 0x2);
	  else
	  {
	      LL_GPIO_ResetOutputPin(GPIOB, 0x2);
	  }
  }
  // Host_Profile_Test_Application();
}

[mƎALLEm · Accepted solution]

Hello,

Does:

Clock_Init();

enable the timer clock in the RCC_APB0ENR register?

Check if these bits are set..

[Remi Demers]

This was it. Thanks a lot!