CubeMX timer period value generated wrong

[Rafael Bachmann]

CubeMX generates weird number for timer period.

I set the timer period to 0xffffffff in the GUI. That results in CubeMX setting:

4.294967295E9

for the period. That value is wrong. It should be just 4294967295.

Is that a CubeMX bug?

[Nesrine.JLASSI]

Hello @Community member​ 

Could you please explain more your request (the scenario) (which MCU) to check the issue.

Please share your ioc file to check the problem.

Best regards,

Nesrine

[TDK]

4.294967295E9 and 4294967295 are equal. One is expressed in scientific notation. Though certainly an integer would be preferable here.

[Rafael Bachmann]

Hello Nesrine,

I am using stm32g474ve on STM32CubeIDE v1.4.0.

In the .ioc file, TIM2.PeriodNoDither is set correctly to 0xffffffff. But the generated code has this line:

1. /* TIM2 init function */
2. void MX_TIM2_Init(void)
3. {
4. TIM_ClockConfigTypeDef sClockSourceConfig = {0};
5. TIM_MasterConfigTypeDef sMasterConfig = {0};
6.  
7. htim2.Instance = TIM2;
8. htim2.Init.Prescaler = 99;
9. htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
10. htim2.Init.Period = 4.294967295E9;
11.  
12. ...

Best regards,

Rafael

[Nesrine.JLASSI]

Hello @Community member (Community Member)​ 

4.294967295E9 and 4294967295 are equal.

Best regards,

Nesrine