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]

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!