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17 lines
498 B
C
17 lines
498 B
C
#include "hardware.h"
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static inline void gpio_setup(){
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RCC->AHBENR |= RCC_AHBENR_GPIOAEN | RCC_AHBENR_GPIOBEN; // for USART and LEDs
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for(int i = 0; i < 10000; ++i) nop();
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// USB - alternate function 14 @ pins PA11/PA12; SWD - AF0 @PA13/14
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GPIOA->AFR[1] = AFRf(14, 11) | AFRf(14, 12);
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GPIOA->MODER = MODER_AF(11) | MODER_AF(12) | MODER_AF(13) | MODER_AF(14) | MODER_O(15);
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GPIOB->MODER = MODER_O(0) | MODER_O(1);
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GPIOB->ODR = 1;
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}
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void hw_setup(){
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gpio_setup();
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}
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