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stm32如何獲取網(wǎng)絡(luò)時間戳

stm32如何獲取網(wǎng)絡(luò)時間戳

STM32獲取網(wǎng)絡(luò)時間戳通常需要通過NTP(Network Time Protocol)協(xié)議從網(wǎng)絡(luò)服務(wù)器獲取。以下是一個基本的步驟指南,說明如何在STM32上實現(xiàn)這一功...

STM32獲取網(wǎng)絡(luò)時間戳通常需要通過NTP(Network Time Protocol)協(xié)議從網(wǎng)絡(luò)服務(wù)器獲取。以下是一個基本的步驟指南,說明如何在STM32上實現(xiàn)這一功能:

1. 準(zhǔn)備工作

硬件:STM32微控制器、網(wǎng)絡(luò)接口(如以太網(wǎng)或Wi-Fi模塊)。

軟件:STM32CubeMX配置工具、HAL庫或LL庫、NTP客戶端庫。

2. 配置網(wǎng)絡(luò)接口

使用STM32CubeMX配置網(wǎng)絡(luò)接口,包括選擇正確的網(wǎng)絡(luò)協(xié)議棧(如LwIP)和配置MAC地址、IP地址、子網(wǎng)掩碼、網(wǎng)關(guān)等。

3. 編寫NTP客戶端代碼

以下是一個簡單的NTP客戶端代碼示例,使用LwIP庫:

```c

include "lwip/sockets.h"

include "lwip/dns.h"

include "lwip/timers.h"

include "lwip/inet.h"

include "time.h"

define NTP_SERVER "pool.ntp.org"

define NTP_PORT 123

define NTP_TIMEOUT 10000

void get_ntp_timestamp(void) {

struct sockaddr_in server;

struct sockaddr_in source;

struct in_addr dest;

struct sockaddr_in sin;

int sock;

struct timeval tv;

struct timezone tz;

unsigned long seconds;

unsigned int port;

unsigned int dest_port;

unsigned int dest_ip;

unsigned int dest_netmask;

unsigned int dest_gateway;

unsigned int dest_dns;

unsigned char packet[48];

unsigned char buffer[1024];

unsigned char ptr;

unsigned char data;

unsigned char time;

unsigned char str;

unsigned char end;

unsigned char ip;

unsigned char netmask;

unsigned char gateway;

unsigned char dns;

unsigned char port_str;

unsigned char server_str;

unsigned char dest_str;

unsigned char str1;

unsigned char str2;

unsigned char str3;

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