RTC support for Sansa.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12185 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Barry Wardell
parent
28aa1316d4
commit
1a2dddc346
4 changed files with 169 additions and 1 deletions
|
|
@ -138,6 +138,8 @@ drivers/rtc/rtc_pcf50605.c
|
|||
drivers/rtc/rtc_e8564.c
|
||||
#elif (CONFIG_RTC == RTC_S3C2440)
|
||||
drivers/rtc/rtc_s3c2440.c
|
||||
#elif (CONFIG_RTC == RTC_AS3514)
|
||||
drivers/rtc/rtc_as3514.c
|
||||
#endif /* (CONFIG_RTC == RTC_) */
|
||||
#endif /* SIMULATOR */
|
||||
|
||||
|
|
|
|||
165
firmware/drivers/rtc/rtc_as3514.c
Normal file
165
firmware/drivers/rtc/rtc_as3514.c
Normal file
|
|
@ -0,0 +1,165 @@
|
|||
/***************************************************************************
|
||||
* __________ __ ___.
|
||||
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||||
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||||
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||||
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||||
* \/ \/ \/ \/ \/
|
||||
* $Id: rtc_as3514.c 12131 2007-01-27 20:48:48Z dan_a $
|
||||
*
|
||||
* Copyright (C) 2007 by Barry Wardell
|
||||
*
|
||||
* All files in this archive are subject to the GNU General Public License.
|
||||
* See the file COPYING in the source tree root for full license agreement.
|
||||
*
|
||||
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||||
* KIND, either express or implied.
|
||||
*
|
||||
****************************************************************************/
|
||||
#include "rtc.h"
|
||||
#include "i2c-pp.h"
|
||||
#include <stdbool.h>
|
||||
|
||||
#define MINUTE_SECONDS 60
|
||||
#define HOUR_SECONDS 3600
|
||||
#define DAY_SECONDS 86400
|
||||
#define WEEK_SECONDS 604800
|
||||
#define YEAR_SECONDS 31536000
|
||||
#define LEAP_YEAR_SECONDS 31622400
|
||||
|
||||
#define BCD2DEC(X) (((((X)>>4) & 0x0f) * 10) + ((X) & 0xf))
|
||||
#define DEC2BCD(X) ((((X)/10)<<4) | ((X)%10))
|
||||
|
||||
/* Days in each month */
|
||||
static unsigned int days_in_month[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
|
||||
|
||||
static inline bool is_leapyear(int year)
|
||||
{
|
||||
if( ((year%4)==0) && (((year%100)!=0) || ((year%400)==0)) )
|
||||
return true;
|
||||
else
|
||||
return false;
|
||||
}
|
||||
|
||||
void rtc_init(void)
|
||||
{
|
||||
}
|
||||
|
||||
int rtc_read_datetime(unsigned char* buf)
|
||||
{
|
||||
char tmp[4];
|
||||
int year;
|
||||
int i;
|
||||
unsigned int seconds;
|
||||
|
||||
/* RTC_AS3514's slave address is 0x46*/
|
||||
for (i=0;i<4;i++){
|
||||
tmp[i] = i2c_readbyte(0x46,0x2a+i);
|
||||
}
|
||||
seconds = tmp[0] + (tmp[1]<<8) + (tmp[2]<<16) + (tmp[3]<<24);
|
||||
|
||||
/* Convert seconds since Jan-1-1980 to format compatible with
|
||||
* get_time() from firmware/common/timefuncs.c */
|
||||
|
||||
/* weekday */
|
||||
buf[3] = ((seconds % WEEK_SECONDS) / DAY_SECONDS + 1) % 7;
|
||||
|
||||
/* Year */
|
||||
year = 1980;
|
||||
while(seconds>=LEAP_YEAR_SECONDS)
|
||||
{
|
||||
year++;
|
||||
|
||||
if(is_leapyear(year)){
|
||||
seconds -= LEAP_YEAR_SECONDS;
|
||||
} else {
|
||||
seconds -= YEAR_SECONDS;
|
||||
}
|
||||
}
|
||||
|
||||
if(is_leapyear(year)) {
|
||||
days_in_month[1] = 29;
|
||||
} else {
|
||||
days_in_month[1] = 28;
|
||||
if(seconds>YEAR_SECONDS){
|
||||
year++;
|
||||
seconds -= YEAR_SECONDS;
|
||||
}
|
||||
}
|
||||
buf[6] = year%100;
|
||||
|
||||
/* Month */
|
||||
for(i=0; i<12; i++)
|
||||
{
|
||||
if(seconds < days_in_month[i]*DAY_SECONDS){
|
||||
buf[5] = i+1;
|
||||
break;
|
||||
}
|
||||
|
||||
seconds -= days_in_month[i]*DAY_SECONDS;
|
||||
}
|
||||
|
||||
/* Month Day */
|
||||
buf[4] = seconds/DAY_SECONDS;
|
||||
seconds -= buf[4]*DAY_SECONDS;
|
||||
|
||||
/* Hour */
|
||||
buf[2] = seconds/HOUR_SECONDS;
|
||||
seconds -= buf[2]*HOUR_SECONDS;
|
||||
|
||||
/* Minute */
|
||||
buf[1] = seconds/MINUTE_SECONDS;
|
||||
seconds -= buf[1]*MINUTE_SECONDS;
|
||||
|
||||
/* Second */
|
||||
buf[0] = seconds;
|
||||
|
||||
/* Convert to Binary Coded Decimal format */
|
||||
for(i=0; i<7; i++)
|
||||
buf[i] = DEC2BCD(buf[i]);
|
||||
|
||||
return 7;
|
||||
}
|
||||
|
||||
int rtc_write_datetime(unsigned char* buf)
|
||||
{
|
||||
int i, year;
|
||||
unsigned int year_days = 0;
|
||||
unsigned int month_days = 0;
|
||||
unsigned int seconds = 0;
|
||||
|
||||
/* Convert from Binary Coded Decimal format */
|
||||
for(i=0; i<7; i++)
|
||||
buf[i] = BCD2DEC(buf[i]);
|
||||
|
||||
year = 2000 + buf[6];
|
||||
|
||||
if(is_leapyear(year)) {
|
||||
days_in_month[1] = 29;
|
||||
} else {
|
||||
days_in_month[1] = 28;
|
||||
}
|
||||
|
||||
/* Number of days in months gone by this year*/
|
||||
for(i=0; i<(buf[5]-1); i++){
|
||||
month_days += days_in_month[i];
|
||||
}
|
||||
|
||||
/* Number of days in years gone by since 1-Jan-1980 */
|
||||
year_days = 365*(buf[6]+20) + buf[6]/4 + 6;
|
||||
|
||||
/* Convert to seconds since 1-Jan-1980 */
|
||||
seconds = buf[0]
|
||||
+ buf[1]*MINUTE_SECONDS
|
||||
+ buf[2]*HOUR_SECONDS
|
||||
+ buf[4]*DAY_SECONDS
|
||||
+ month_days*DAY_SECONDS
|
||||
+ year_days*DAY_SECONDS;
|
||||
|
||||
/* Send data to RTC */
|
||||
for (i=0;i<4;i++){
|
||||
pp_i2c_send(0x46, 0x2a+i,((seconds>>(8*i)) & 0xff));
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
|
@ -37,7 +37,7 @@
|
|||
|
||||
/* define this if you have a real-time clock */
|
||||
#ifndef BOOTLOADER
|
||||
#define CONFIG_RTC RTC_E8564 /* TODO: figure this out */
|
||||
#define CONFIG_RTC RTC_AS3514
|
||||
#endif
|
||||
|
||||
/* Define this if you have a software controlled poweroff */
|
||||
|
|
|
|||
|
|
@ -151,6 +151,7 @@
|
|||
#define RTC_PCF50606 3 /* iriver H300 */
|
||||
#define RTC_S3C2440 4
|
||||
#define RTC_E8564 5 /* iriver H10 */
|
||||
#define RTC_AS3514 6 /* Sandisk Sansa e200 series */
|
||||
|
||||
/* USB On-the-go */
|
||||
#define USBOTG_ISP1362 1362
|
||||
|
|
|
|||
Loading…
Reference in a new issue