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;
unsigned char str4;
unsigned char str5;
unsigned char str6;
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