#include "stm32f10x.h"

RCC->APB2ENR |= RCC_APB2ENR_IOPAEN;

GPIOA->CRL &= ~(GPIO_CRL_MODE6 | GPIO_CRL_CNF6);   //Очищаем регистры MODE и CNF
GPIOA->CRL |=  GPIO_CRL_MODE6_1; //выход, 2MHz, push-pull
GPIOA->CRL &= ~(GPIO_CRL_MODE7 | GPIO_CRL_CNF7);   //Очищаем регистры MODE и CNF
GPIOA->CRL |=  GPIO_CRL_MODE7_1; //выход, 2MHz, push-pull

GPIOA->BSRR |= GPIO_BSRR_BS7;
GPIOA->BSRR |= GPIO_BSRR_BS6;

//GPIOA->BSRR |= GPIO_BSRR_BR7;
//GPIOA->BSRR |= GPIO_BSRR_BR6;