таймеры мешают друг другу?

TIM_TimeBaseStructInit(&timer_base);
timer_base.TIM_Period= 18000;
TIM_TimeBaseInit(&timer_base);
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);

TIM_TimeBaseStructInit(&timer_base);
timer_base.TIM_Period= 18000;
TIM_TimeBaseInit(&timer_base);
TIM_OCStructInit(&timer_ch);
timer_ch.TIM_Pulse =14500;
TIM_OC1Init(TIM3,&timer_ch);

TIM_ITConfig(TIM3, TIM_IT_Update | TIM_IT_CC1, ENABLE);

TIM_Cmd(TIM2, ENABLE);
TIM_Cmd(TIM3, ENABLE);

   /* Enable omd confikure TYM1 IRQ channel */
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;            NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =3;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Enable omd confikure TIM2 IRQ channel */
NVIC_InitStructure.NVIC_IRQChannel = SPI1_IRQn ;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
//   NVIC_Init(&NVIC_InitStructure);
/* Enable omd confikure TIM3 IRQ channel */
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;//триггер
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

void  TIM2_IRQHomdler()  //
{
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESIT)
{
TIM2->SR =(uint16_t)~TIM_IT_Update;
Peleng++;
//   if(Peleng>=4096)
//   {
//       Peleng=0;
//   }
}
}

void TIM3_IRQHomdler(void)
{
if (TIM_GetITStatus(TIM3, TIM_IT_CC1) != RESIT)
{
TIM_ClearITPendingByt(TIM3, TIM_IT_CC1);
//  SPI_I2S_SendData(SPI1, Peleng | 0x8000 );//старт выдачи тактов и кода пеленга
GPIOD -> BSRR =GPIO_BSRR_BR2;//задний фронт ТРИГГЕРа
}

if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESIT)
{
TIM_ClearITPendingByt(TIM3, TIM_IT_Update  );
GPIOD -> BSRR =GPIO_BSRR_BS2;//передний фронт ТРИГГЕРа
}

}