STM32 NTP获取网络时间 WiFi

/*PA9->U1-Tx PA10->U1-Rx*/ #include "esp8266.h" #include <sys.h> #include <stdio.h> #include <stdarg.h> #include <string.h> #include <oled.h> #include <usart.h> #include <timer.h> NTP NetTime; extern clock localTime; void Usart1forEsp8266_Init(unsigned char Fck,unsigned int Bot) { RCC->APB2ENR |= 1<<14; GPIOA->CRH &= 0xFFFFF00F; GPIOA->CRH |= 0x000008b0; GPIOA->LCKR |= 0x0600; USART1->BRR = Fck*1000000/Bot; USART1->CR1 = 8; USART1->CR1 = 0x212c; // USART1->CR1&=~0x20; // Clear Receive Interruption USART1->CR1 |= 1<<13; // Enable USART1 USART1->CR1 |= 1<<4; // Enable IDEL NVIC->ISER[1] |=1<<5; NVIC->IP[37] = 0x00; } void U1Putchar(char data) { while((USART1->SR&0X40)==0){} USART1->DR=data; } void U1Putstr(char *sp) { while(*sp) U1Putchar(*sp++); } void U1_Printf(const char *restric, ...) { char Dis_Buf[128]; va_list ap; va_start(ap,restric); vsprintf((char*)Dis_Buf,restric,ap); va_end(ap); U1Putstr(Dis_Buf); } u8 USART1_RX_BUF[128]; u8 USART1_RX_STA; void USART1_IRQHandler(void) { if(USART1->SR&0x20) { USART1_RX_BUF[USART1_RX_STA++]=USART1->DR; } if(USART1->SR&0x10) { USART1->DR; USART1_RX_BUF[USART1_RX_STA]='\0'; USART1_RX_STA|=1<<7; } // if(USART1_RX_STA>127) // USART1_RX_STA|=1<<8; } u8* ESP8266_CheckCmd(char* str)// Chack string { char *strx=0; if(USART1_RX_STA&0x80) { USART1_RX_BUF[USART1_RX_STA&0x7f]=0; strx=strstr((const char*)USART1_RX_BUF,(const char*)str); } return (u8*)strx; } u8 ESP8266_SendCmd(char *cmd,char *ack,u16 waittime)// cmd =1 { u8 res=0; U1_Printf("%s\r\n",cmd); if(ack&&waittime) { while(--waittime) { ysm(10); if(USART1_RX_STA&0X80) { if(NULL != ESP8266_CheckCmd(ack)) { res=0; // OLED_Printf("%s....%s\n",cmd,ack); break; } else res=1; USART1_RX_STA=0; } } if(waittime==0) res=1; } return res; } void ESP8266_Init(void) { u8 state=0; OLED_xyset(0,2); USART1_RX_STA = 0; memset(USART1_RX_BUF,0,sizeof(USART1_RX_BUF)); state = ESP8266_SendCmd("AT+CWMODE=3","OK",20); //Set WiFi mode 3 SoftAP+Station mode if(!state) OLED_Printf("ModeSet...OK\n"); else OLED_Printf("ModeSet...Error\n"); state = ESP8266_SendCmd("AT+RST","OK",20); if(!state) OLED_Printf("Reset...OK\n"); else OLED_Printf("Reset...Error\n"); ysm(4000); // need it more maybe? // state = ESP8266_SendCmd("AT+CWJAP=\"ChinaNet-xDVy\",\"yszekdsq\"","OK",10000); // Connect router state = ESP8266_SendCmd("AT+CWJAP=\"ChinaNet-7Xxu\",\"jji49na7\"","OK",1000); // Connect router if(!state) OLED_Printf("RouterConn...OK\n"); else OLED_Printf("RouterConn..Error\n"); state = ESP8266_SendCmd("AT+CIPMUX=0","OK",300); if(!state) OLED_Printf("ConnSet...OK\n"); else OLED_Printf("ConnSet..Error\n"); // state = ESP8266_SendCmd("AT+CIPSTART=\"UDP\",\"1.cn.pool.ntp.org\",123","OK",300); //make connection with NTP // if(!state) OLED_Printf("ConnNtp...OK\n"); else OLED_Printf("ConnNtp..Error\n"); } int month[12]={31,28,31,30,31,30,31,31,30,31,30,31}; u32 datetemp; u8 getTimeFromNTPServer(void) { u8 packetBuffer[48]; u32 timeOut=0xffffff; u8 i; u16 year=1900; u32 yearSec; // ESP8266_SendCmd("AT+CIPSTART=\"UDP\",\"1.cn.pool.ntp.org\",123","OK",100); //make connection with NTP U1_Printf("AT+CIPSTART=\"UDP\",\"1.cn.pool.ntp.org\",123\r\n"); USART1_RX_STA = 0; memset(USART1_RX_BUF,0,sizeof(USART1_RX_BUF)); ysm(100); memset(packetBuffer,0,sizeof(packetBuffer)); ESP8266_SendCmd("AT+CIPSEND=48","OK",100); packetBuffer[0] = 0xe3; // LI, Version, Mode packetBuffer[1] = 0; // Stratum, or type of clock packetBuffer[2] = 6; // Polling Interval packetBuffer[3] = 0xEC; // Peer Clock Precision packetBuffer[12] = 49; packetBuffer[13] = 0x4E; packetBuffer[14] = 49; packetBuffer[15] = 52; USART1_RX_STA = 0; memset(USART1_RX_BUF,0,sizeof(USART1_RX_BUF)); for(i=0;i<48;i++) { U1Putchar(packetBuffer[i]); } while(timeOut--) { if(USART1_RX_STA&0x80) { if((USART1_RX_STA-0x80)>=60) { USART1_RX_STA = 0; break; } else { USART1_RX_STA = 0; memset(USART1_RX_BUF,0,sizeof(USART1_RX_BUF)); } } } if(0 == timeOut) return 1; // for(i=10;i<128;i++) // UPutchar(USART1_RX_BUF[i]); // USART1_RX_STA = 0; if(0x24 == USART1_RX_BUF[10]) { NetTime.li = ((u8)USART1_RX_BUF[11] & 0xc0)>>6; NetTime.secTemp = (u8)USART1_RX_BUF[42]; NetTime.secTemp <<= 8; NetTime.secTemp |= (u8)USART1_RX_BUF[43]; NetTime.secTemp <<= 8; NetTime.secTemp |= (u8)USART1_RX_BUF[44]; NetTime.secTemp <<= 8; NetTime.secTemp |= (u8)USART1_RX_BUF[45]; USART1_RX_STA = 0; } else { USART1_RX_STA = 0; return 1; } if(3 == NetTime.li) return 2; NetTime.secTemp += 28800; //UTC/GMT+08:00 8h==2800sec datetemp = NetTime.secTemp; datetemp = datetemp/86400; datetemp += 1; NetTime.date = datetemp%7; do { if(((0 == year%4) && (0 != year%100)) || 0==year%400) { yearSec = 31622400; } else yearSec = 31536000; if(NetTime.secTemp < yearSec) break; else { NetTime.secTemp -= yearSec; year++; } }while(1); // while(1) NetTime.year = year; if(((0 == year%4) && (0 != year%100)) || 0==year%400) { month[1] = 29; } for(i=0;i<12;i++) { if(NetTime.secTemp < month[i]*86400) //There are 86400sec in 1 day; break; else NetTime.secTemp -= month[i]*86400; } NetTime.daysInMonth = month[i]; NetTime.month = i; NetTime.day = NetTime.secTemp/86400 + 1; NetTime.secTemp = NetTime.secTemp % 86400; NetTime.hour = NetTime.secTemp/3600; NetTime.secTemp = NetTime.secTemp%3600; NetTime.min = NetTime.secTemp/60; NetTime.sec = NetTime.secTemp%60; // U2_Printf("%d %d %d %d:%d:%d\r\n",NetTime.year,NetTime.month,NetTime.day,NetTime.hour,\ // NetTime.min,NetTime.sec); return 0; } u8 getTime(void) { u8 temp=1; u8 timeOut=100; while(temp&&timeOut--) { temp = getTimeFromNTPServer(); } if(0 == timeOut) return 1; localTime.year = NetTime.year; localTime.month = NetTime.month; localTime.day = NetTime.day; localTime.hour = NetTime.hour; localTime.min = NetTime.min; localTime.sec = NetTime.sec; localTime.date = NetTime.date; localTime.dateTemp = (u8)datetemp; return 0; }