DriverSTM_RC/Source/RTC.c

/*
 * RTC.c
 *
 *  Created on: 15 janv. 2019
 *      Author: e_rcluze
 */

#include "RTC.h"

/** Private Fonction*/
void readRTC(uint8_t reg, uint8_t *tab, int len){
	HAL_I2C_Master_Transmit(&I2C_RTC,RTC_ADD,&reg,1,1000);
	HAL_I2C_Master_Receive(&I2C_RTC,RTC_ADD,tab,len,1000);
}

void writeRTC(uint8_t reg, uint8_t *tab, int len){
	uint8_t t[len+1];
	t[0]=reg;
	for(int i=0;i<len;i++)
		t[i+1]=tab[i];
	HAL_I2C_Master_Transmit(&I2C_RTC,RTC_ADD,t,len+1,1000);
}

/** Public Fonction*/

void initRTC(I2C_HandleTypeDef typ){
	I2C_RTC = typ;
}

void readHeure(Heure *heure){
	uint8_t tab[2];
	readRTC(MINUTES,tab,2);
	heure->minute = (((tab[0]&0x70)>>4)*10)+(tab[0]&0X0F);
	heure->heure = (((tab[1]&0X30)>>4)*10)+(tab[1]&0X0F);
}

/** Public Fonction*/
void readDate(Date *date){
	uint8_t tab[7];
	readRTC(SECOND,tab,7);
	date->second=(((tab[0]&0X70)>>4)*10)+(tab[0]&0X0F);
	date->minute=(((tab[1]&0x70)>>4)*10)+(tab[1]&0X0F);
	date->heure=(((tab[2]&0X30)>>4)*10)+(tab[2]&0X0F);
	date->jour=(((tab[4]&0X30)>>4)*10)+(tab[4]&0X0F);
	date->mois=(((tab[5]&0X10)>>4)*10)+(tab[5]&0X0F);
	date->annee=((tab[6]>>4)*10)+(tab[6]&0X0F);
}

void writeDate(Date *date){
	uint8_t tab[7];

	tab[0]=((date->second/10)<<4) + (date->second%10);
	tab[1]=((date->minute/10)<<4) + (date->minute%10);
	tab[2]=((date->heure/10)<<4) + (date->heure%10);
	tab[3]=date->joursemaine;
	tab[4]=((date->jour/10)<<4) + (date->jour%10);
	tab[5]=((date->mois/10)<<4) + (date->mois%10);
	tab[6]=((date->annee/10)<<4) + (date->annee%10);

	writeRTC(SECOND,tab,7);
}

void redemareRTC(){
	uint8_t pt[1];
	readRTC(ALARM_HOURS,pt,1);
	pt[0]=pt[0]&!0x40;
	writeRTC(ALARM_HOURS,pt,1);
}

void testRTC(){
	Date d;
	d.annee=2020;
	d.mois=1;
	d.jour=20;
	d.joursemaine=1;
	d.heure=14;
	d.minute=0;
	d.second=0;
	writeDate(&d);
	redemareRTC();
	HAL_Delay(2000);
	readDate(&d);
	HAL_Delay(1);
}

void testBatteryRTC(){
	redemareRTC();
	Date d;
	readDate(&d);
	HAL_Delay(1);
}