saffetblt

void RCC_init(void){
	/* Configure clocks
 * Max SYSCLK: 168 MHz
 * Max AHB:    168 Mhz
 * Max APB1:   42 Mhz
 * Max APB2:   84 Mhz
 */
	
	// Flash settings: 5 CPU cycle wait,  enable prefetch,  instruction cache enable, data cache enable
	FLASH->ACR = FLASH_ACR_LATENCY_5WS | FLASH_ACR_PRFTEN | FLASH_ACR_ICEN | FLASH_ACR_DCEN; 

saffetblt

#include "stm32f4xx.h"
int period;
float freq;

int main(){
	int last_value = 0;
	int current_value = 0;

	//Configure PA5 as alternate function mode
	RCC->AHB1ENR |= 0x1;					//Enable GPIOA

saffetblt

#include "stm32f4xx.h"                  // Device header
/* Toggle PA5 at 1Hz using TIM2 Compare Mode */

int main(){
	RCC->AHB1ENR  |= 0x1;		//Enable AHB1 clock bus
	GPIOA->MODER  |= (2<<10);	//Set PA5 to Alternate Function Mode
	GPIOA->AFR[0] |= (1<<20);	//SET pin AF1 for TIM2_CH1
	
	RCC->APB1ENR	|= 0x1;		//Enable TIM2 Clock Bus
	TIM2->PSC	= 1600;		//16.000.000 dive by 1.600 = 10.000 (Prescaler Register)

saffetblt

#include "stm32f4xx.h"                  // Device header

int main(){
	//GPIO Config
	RCC->AHB1ENR |=0x8;
	GPIOD->MODER |= (1<<30);
	
	//TIM2 Config @16Mhz
	RCC->APB1ENR |= 0x1;	//Enable TIM2 Clock Bus
	TIM2->PSC = 1600-1;		//16.000.000 dive by 1.600	= 10.000 (Prescaler Register)

saffetblt

#include "stm32f4xx.h"                  // Device header
#include "stdio.h"

void USART2_Init(void);


int main() {
	int n;
	char str[100];
	USART2_Init();

saffetblt

struct __FILE{int handle;};
FILE __stdin = {0};
FILE __stdout = {1};
FILE __stderr = {2};

int fgetc(FILE *f){
	int c;
	c = USART2_Read();
	if (c == '\r') {
		USART2_Write(c);

saffetblt

package main

import "testing"

func TestPrivateIP(t *testing.T) {
	isPrivate, _ := PrivateIP("192.168.1.6")
	if !isPrivate {
		t.Error(isPrivate)
	}
}

saffetblt

package main

import (
	"errors"
	"fmt"
	"net"
	"regexp"
	"strings"
)