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#include <stm32f0xx.h>
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unsigned int i = 0x12345678;
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unsigned char c = 2;
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int main(void) {
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RCC->AHBENR |= RCC_AHBENR_GPIOBEN;
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GPIOB->MODER |= (1<<1*2);
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GPIOB->ODR |= (1<<1);
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SysTick_Config(800000);
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while(1) {
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i++;
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}
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}
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void SysTick_Handler(void) {
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GPIOB->ODR ^= (1<<1);
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}
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