Глюк компилера или какой-то косяк со стеком. Структура описана так
//
/**
* @brief TIM Time Base configuration structure definition.
*/
typedef struct
{
uint16_t Prescaler; /*!< Specifies the prescaler value used to divide the TIM clock.
This parameter can be a number between Min_Data=0x0000 and Max_Data=0xFFFF.
This feature can be modified afterwards using unitary function
@ref LL_TIM_SetPrescaler().*/
uint32_t CounterMode; /*!< Specifies the counter mode.
This parameter can be a value of @ref TIM_LL_EC_COUNTERMODE.
This feature can be modified afterwards using unitary function
@ref LL_TIM_SetCounterMode().*/
uint32_t Autoreload; /*!< Specifies the auto reload value to be loaded into the active
Auto-Reload Register at the next update event.
This parameter must be a number between Min_Data=0x0000 and Max_Data=0xFFFF.
Some timer instances may support 32 bits counters. In that case this parameter must
be a number between 0x0000 and 0xFFFFFFFF.
This feature can be modified afterwards using unitary function
@ref LL_TIM_SetAutoReload().*/
uint32_t ClockDivision; /*!< Specifies the clock division.
This parameter can be a value of @ref TIM_LL_EC_CLOCKDIVISION.
This feature can be modified afterwards using unitary function
@ref LL_TIM_SetClockDivision().*/
uint32_t RepetitionCounter; /*!< Specifies the repetition counter value. Each time the RCR downcounter
reaches zero, an update event is generated and counting restarts
from the RCR value (N).
This means in PWM mode that (N+1) corresponds to:
- the number of PWM periods in edge-aligned mode
- the number of half PWM period in center-aligned mode
GP timers: this parameter must be a number between Min_Data = 0x00 and
Max_Data = 0xFF.
Advanced timers: this parameter must be a number between Min_Data = 0x0000 and
Max_Data = 0xFFFF.
This feature can be modified afterwards using unitary function
@ref LL_TIM_SetRepetitionCounter().*/
} LL_TIM_InitTypeDef;
// Если сделать первое поле uint32_t Prescaler; все работает....