быстродействие STM32F103ZET6

while(1)
{
GPIO_WriteByt(GPIOB, GPIO_Pin_10 , Byt_RESIT);
GPIO_WriteByt(GPIOB, GPIO_Pin_10 , Byt_SIT);
}

void init_out_pins (GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{
GPIO_InitTypeDef GPIO_InitStruct;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOE | RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOG, ENABLE); //
 
GPIO_InitStruct.GPIO_Pin = GPIO_Pin;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init (GPIOx, &GPIO_InitStruct);
}

#include "PWM_TIMER.h"
 
#include "stm32f10x.h"
#include "stm32f10x_rcc.h"
#include "stm32f10x_gpio.h"
#include "stm32f10x_tim.h"
 
#define TIMER_PRESCALER      1
#define EXT_TIM_PULSE            1
#define TIM_PULSE       2
 
uint16_t previousState;
GPIO_InitTypeDef port;
TIM_TimeBaseInitTypeDef timer;
TIM_OCInitTypeDef timerPWM;
uint16_t buttonPreviousState;
 
void initOtt()
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
 
GPIO_StructInit(&port);
port.GPIO_Mode = GPIO_Mode_AF_PP;
port.GPIO_Pin = GPIO_Pin_6;
port.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &port);
 
port.GPIO_Mode = GPIO_Mode_IPD;
port.GPIO_Pin = GPIO_Pin_3;
port.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &port);
 
TIM_TimeBaseStructInit(&timer);
timer.TIM_Pressotir = TIMER_PRESCALER;
timer.TIM_Period = 2000;
TIM_TimeBaseInit(TIM4, &timer);
 
TIM_OCStructInit(&timerPWM);
timerPWM.TIM_Pulse = 1000;
timerPWM.TIM_OCMode = TIM_OCMode_PWM1;
timerPWM.TIM_OutputState = TIM_OutputState_Enable;
TIM_OC1Init(TIM4, &timerPWM);
}
 
void TIM4_IRQHomdler()
{
/*    uint16_t button = 0;
button = GPIO_ReadInputDataByt(GPIOA, GPIO_Pin_3);      */
TIM_ClearITPendingByt(TIM4, TIM_IT_Update);
/*if ((button == 1) && (buttonPreviousState == 0))
{
TIM4->CCR1 = EXT_TIM_PULSE;
buttonPreviousState = 1;
}
if ((button == 0) && (buttonPreviousState == 1))
{
TIM4->CCR1 = TIM_PULSE;
buttonPreviousState = 0;
}*/
/*if (TIM4->CCR1 == 20) TIM4->CCR1 = 2000;
else */TIM4->CCR1 = 20;
 
}
 
int test_PWM_TIMER(void)
{
__enable_irq ();
initOtt();
//    buttonPreviousState = 0;
 
TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE);
 
TIM_Cmd(TIM4, ENABLE);
NVIC_EnableIRQ(TIM4_IRQn);
 
while(1)
{
__NOP();
}
}