X-Git-Url: http://cloudbase.mooo.com/gitweb/z180-stamp.git/blobdiff_plain/05437fb4cdb907816a4fc3ffafa2617fcf33266a..19a463f47d00a983e23cfd1c0e769f88667f04f8:/avr/pcf8583.c

diff --git a/avr/pcf8583.c b/avr/pcf8583.c
index af1331d..bdb779f 100644
--- a/avr/pcf8583.c
+++ b/avr/pcf8583.c
@@ -1,13 +1,20 @@
+/*
+ * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
 /*
  * Date & Time support for Philips PCF8583 RTC
  */
 
 #include "common.h"
 #include <stdlib.h>
-#include "debug.h"
-#include "command.h"
+#include "time.h"
 #include "rtc.h"
 #include "i2c.h"
+#include "command.h"
+#include "debug.h"
 
 #define  DEBUG_RTC 0
 
@@ -34,21 +41,20 @@ static uint_fast8_t bcd2bin(uint8_t val)
 static uint8_t bin2bcd (uint_fast8_t val)
 {
 	div_t d = div(val, 10);
-	
+
 	return (d.quot << 4) | d.rem;
 }
 
 
-int rtc_get (struct rtc_time *tmp)
+int rtc_get (struct tm *tmp)
 {
-	int rel = 0;
 	uint8_t rtcbuf[NR_OF_REGS];
-	uint16_t year;
-	
+	int16_t year;
+
 	i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, rtcbuf, NR_OF_REGS);
 	i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0x10, 1, (uint8_t *) &year, 2);
 
-	debug_rtc("Get RTC year: %u, year/date: %02x, wdays/month: %02x, "
+	debug_rtc("Get RTC year: %u, wdays/month: %02x, year/date: %02x, "
 		"hour: %02x, min: %02x, sec: %02x, (stat: %02x)\n", year,
 		rtcbuf[6], rtcbuf[5], rtcbuf[4], rtcbuf[3], rtcbuf[2], rtcbuf[0]);
 
@@ -56,27 +62,27 @@ int rtc_get (struct rtc_time *tmp)
 	tmp->tm_min  = bcd2bin (rtcbuf[REG_MIN]    & 0x7F);
 	tmp->tm_hour = bcd2bin (rtcbuf[REG_HOUR]   & 0x3F);
 	tmp->tm_mday = bcd2bin (rtcbuf[REG_YRDATE] & 0x3F);
-	tmp->tm_mon  = bcd2bin (rtcbuf[REG_WDMON]  & 0x1F);
-	while (year%4 < (rtcbuf[REG_YRDATE]>>6)) {
+	tmp->tm_mon  = bcd2bin (rtcbuf[REG_WDMON]  & 0x1F) - 1;
+	while (year%4 != (rtcbuf[REG_YRDATE]>>6)) {
 		year++;
-		/* TODO: update RTC ram */
+		i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0x10, 1, (uint8_t *) &year, 2);
 	}
-	tmp->tm_year  = year; 
+	tmp->tm_year  = year - 1900;
 	tmp->tm_wday = rtcbuf[REG_WDMON] >> 5;
 	tmp->tm_yday = 0;
 	tmp->tm_isdst= 0;
 
-
 	debug_rtc( "Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
 
-	return rel;
+	return rtcbuf[REG_CS] == 0x04 ? 0 : 1;
 }
 
-int rtc_set (struct rtc_time *tmp)
+int rtc_set (struct tm *tmp)
 {
 	uint8_t rtcbuf[NR_OF_REGS];
+	int16_t year = tmp->tm_year + 1900;
 
 	debug_rtc("Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
@@ -84,17 +90,16 @@ int rtc_set (struct rtc_time *tmp)
 
 	rtcbuf[REG_CS] = 0x84;
 	rtcbuf[REG_CSEC] = 0x00;
-	rtcbuf[REG_WDMON ] = bin2bcd(tmp->tm_mon) | ((tmp->tm_wday) << 5);
-	rtcbuf[REG_YRDATE] = ((tmp->tm_year % 4) << 6) | bin2bcd(tmp->tm_mday);
+	rtcbuf[REG_WDMON ] = (bin2bcd(tmp->tm_mon) + 1) | ((tmp->tm_wday) << 5);
+	rtcbuf[REG_YRDATE] = ((year % 4) << 6) | bin2bcd(tmp->tm_mday);
 	rtcbuf[REG_HOUR  ] = bin2bcd(tmp->tm_hour);
 	rtcbuf[REG_MIN   ] = bin2bcd(tmp->tm_min);
 	rtcbuf[REG_SEC   ] = bin2bcd(tmp->tm_sec);
 
 	i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0,    1, rtcbuf, NR_OF_REGS);
-	i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0x10, 1, (uint8_t *) &tmp->tm_year, 2);
+	i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0x10, 1, (uint8_t *) &year, 2);
 	rtcbuf[REG_CS] = 0x04;
 	i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, rtcbuf, 1);
 
-
 	return 0;
 }