#include <stdio.h>
#include "bsp.h"
#include "rtc/device/PCF8523.h"

Overview

pcf8523 RTC driver implementation.

Implements the functions defined in pcf8523.h for controlling pcf8523 RTC input/output and interrupts on the EfxSapphireSoC platform.

Copyright: 2013-2026 Efinix Inc. All rights reserved.
See the full License Information for Efinix and SaxonSoc MIT terms.

Definition in file PCF8523.c.

Macros
#define	RTC_CONTROL_1 0X00
#define	RTC_CONTROL_2 0X01
#define	RTC_CONTROL_3 0X02
#define	RTC_SECONDS 0X03
#define	RTC_MINUTES 0X04
#define	RTC_HOURS 0X05
#define	RTC_DAYS 0X06
#define	RTC_WEEKDAYS 0X07
#define	RTC_MONTH 0X08
#define	RTC_YEAR 0X09
#define	TIMER_A_FREQ_CTRL 0x10
#define	TIMER_A_REG 0x11
#define	TIMER_B_FREQ_CTRL 0x12
#define	TIMER_B_REG 0x13
#define	SECONDS_DATA 0X7F
#define	MINUTES_DATA 0X7F
#define	HOURS_DATA 0X3F
#define	DAYS_DATA 0X3F
#define	WEEKDAYS_DATA 0X07
#define	MONTHS_DATA 0X1F
#define	YEARS_DATA 0XFF

Functions
rtc_status_t	PCF8523_getTime (rtc_instance_t *rtc)
	Get time from PCF8523 RTC.
rtc_status_t	PCF8523_setTime (rtc_instance_t *rtc)
	Set time on PCF8523 RTC.
rtc_status_t	PCF8523_setTimeSystem (rtc_instance_t *rtc, u8 use_12hour_mode)
	Set time system (12-hour or 24-hour) on PCF8523 RTC.
rtc_status_t	PCF8523_softreset (rtc_instance_t *rtc)
rtc_status_t	PCF8523_getCSR (rtc_instance_t *rtc)
	Get control/status register from PCF8523 RTC.

Variables
const rtc_api_t	PCF8523_DRIVER
	PCF8523 Driver Instance. Point your generic RTC pointer to this structure to use the PCF8523 hardware.

Macro Definition Documentation

◆ DAYS_DATA

#define DAYS_DATA 0X3F

Definition at line 47 of file PCF8523.c.

◆ HOURS_DATA

#define HOURS_DATA 0X3F

Definition at line 46 of file PCF8523.c.

◆ MINUTES_DATA

#define MINUTES_DATA 0X7F

Definition at line 45 of file PCF8523.c.

◆ MONTHS_DATA

#define MONTHS_DATA 0X1F

Definition at line 49 of file PCF8523.c.

◆ RTC_CONTROL_1

#define RTC_CONTROL_1 0X00

Definition at line 24 of file PCF8523.c.

◆ RTC_CONTROL_2

#define RTC_CONTROL_2 0X01

Definition at line 25 of file PCF8523.c.

◆ RTC_CONTROL_3

#define RTC_CONTROL_3 0X02

Definition at line 26 of file PCF8523.c.

◆ RTC_DAYS

#define RTC_DAYS 0X06

Definition at line 32 of file PCF8523.c.

◆ RTC_HOURS

#define RTC_HOURS 0X05

Definition at line 31 of file PCF8523.c.

◆ RTC_MINUTES

#define RTC_MINUTES 0X04

Definition at line 30 of file PCF8523.c.

◆ RTC_MONTH

#define RTC_MONTH 0X08

Definition at line 34 of file PCF8523.c.

◆ RTC_SECONDS

#define RTC_SECONDS 0X03

Definition at line 29 of file PCF8523.c.

◆ RTC_WEEKDAYS

#define RTC_WEEKDAYS 0X07

Definition at line 33 of file PCF8523.c.

◆ RTC_YEAR

#define RTC_YEAR 0X09

Definition at line 35 of file PCF8523.c.

◆ SECONDS_DATA

#define SECONDS_DATA 0X7F

Definition at line 44 of file PCF8523.c.

◆ TIMER_A_FREQ_CTRL

#define TIMER_A_FREQ_CTRL 0x10

Definition at line 38 of file PCF8523.c.

◆ TIMER_A_REG

#define TIMER_A_REG 0x11

Definition at line 39 of file PCF8523.c.

◆ TIMER_B_FREQ_CTRL

#define TIMER_B_FREQ_CTRL 0x12

Definition at line 40 of file PCF8523.c.

◆ TIMER_B_REG

#define TIMER_B_REG 0x13

Definition at line 41 of file PCF8523.c.

◆ WEEKDAYS_DATA

#define WEEKDAYS_DATA 0X07

Definition at line 48 of file PCF8523.c.

◆ YEARS_DATA

#define YEARS_DATA 0XFF

Definition at line 50 of file PCF8523.c.

Function Documentation

◆ PCF8523_softreset()

rtc_status_t PCF8523_softreset ( rtc_instance_t * rtc )

Definition at line 168 of file PCF8523.c.