96-DCF77-Library (STM32F4)

PB0 = DCF77-Signal

GPIO, TIM, EXTI, SYSCFG, MISC

typedef enum {
  DCF77_NO_SIGNAL =0, // there is no DCF77-Signal
  DCF77_READING,      // wait until time-data is complete
  DCF77_TIME_ERROR,   // error
  DCF77_TIME_OK       // time-data is ok
}DCF77_Status_t;

typedef struct {
  uint8_t sek;   // sekunden [0..59]
  uint8_t min;   // minuten [0..59]
  uint8_t std;   // stunden [0..23]
  uint8_t tag;   // tag [1..31]
  uint8_t monat; // monat [1..12]
  uint8_t jahr;  // jahr [0..99]
}DCF77_TIME_t;
DCF77_TIME_t DCF77_TIME;

void UB_DCF77_Init(void);                // zum Init vom DCF77-Modul
DCF77_Status_t UB_DCF77_ReadTime(void);  // zum auslesen der Uhrzeit

//--------------------------------------------------------------
// File     : main.c
// Datum    : 31.12.2015
// Version  : 1.0
// Autor    : UB
// EMail    : mc-4u(@)t-online.de
// Web      : www.mikrocontroller-4u.de
// CPU      : STM32F4
// IDE      : CooCox CoIDE 1.7.8
// GCC      : 4.9 2015q2
// Module   : CMSIS_BOOT, M4_CMSIS_CORE
// Funktion : DCF77-Demo
// Hinweis  : Diese zwei Files muessen auf 8MHz stehen
//              "cmsis_boot/stm32f4xx.h"
//              "cmsis_boot/system_stm32f4xx.c"
//--------------------------------------------------------------
 
#include "main.h"
#include "stm32_ub_dcf77.h"
#include "stm32_ub_uart.h"
#include 
 
int main(void)
{
  DCF77_Status_t status,old_status=99;
  uint8_t old_sek=99;
  char buf[30];
 
  SystemInit(); // Quarz Einstellungen aktivieren
 
  UB_Uart_Init();
 
  // init vom DCF77-Modul
  UB_DCF77_Init();
 
  UB_Uart_SendString(COM2,"DCF77-Start",CRLF);
 
  while(1)
  {
    status=UB_DCF77_ReadTime();
    if(status!=old_status) {
      old_status=status;
      if(status==DCF77_NO_SIGNAL) UB_Uart_SendString(COM2,"no signal",CRLF);
      if(status==DCF77_READING) UB_Uart_SendString(COM2,"reading...",CRLF);
      if(status==DCF77_TIME_ERROR) UB_Uart_SendString(COM2,"error",CRLF);
    }
    if(status==DCF77_TIME_OK) {
      if(DCF77_TIME.sek!=old_sek) {
        old_sek=DCF77_TIME.sek;
        sprintf(buf,"h=%d, m=%d, s=%d",DCF77_TIME.std,DCF77_TIME.min,DCF77_TIME.sek);
        UB_Uart_SendString(COM2,buf,CRLF);
        sprintf(buf,"d=%d, m=%d, j=%d",DCF77_TIME.tag,DCF77_TIME.monat,DCF77_TIME.jahr);
        UB_Uart_SendString(COM2,buf,CRLF);
      }
    }
  }
}