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PCF85263: Need to clear the 100ths of second register when setting the time

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Gregory Nutt 2015-11-20 17:39:41 -06:00
parent 38c9d42e21
commit 294950ea3d
1 changed files with 16 additions and 12 deletions
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28
drivers/timers/pcf85263.c
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@ -407,7 +407,7 @@ int up_rtc_settime(FAR const struct timespec *tp)
struct i2c_msg_s msg[3]; struct i2c_msg_s msg[3];
struct tm newtm; struct tm newtm;
time_t newtime; time_t newtime;
uint8_t buffer[8]; uint8_t buffer[9];
uint8_t seconds; uint8_t seconds;
int ret; int ret;
@ -451,46 +451,50 @@ int up_rtc_settime(FAR const struct timespec *tp)
/* Construct the message */ /* Construct the message */
/* Write starting with the seconds regiser */ /* Write starting with the seconds regiser */
buffer[0] = PCF85263_RTC_SECONDS; buffer[0] = PCF85263_RTC_100TH_SECONDS;
/* Clear the 100ths of seconds */
buffer[1] = 0;
/* Save seconds (0-59) converted to BCD */ /* Save seconds (0-59) converted to BCD */
buffer[1] = rtc_bin2bcd(newtm.tm_sec); buffer[2] = rtc_bin2bcd(newtm.tm_sec);
/* Save minutes (0-59) converted to BCD */ /* Save minutes (0-59) converted to BCD */
buffer[2] = rtc_bin2bcd(newtm.tm_min); buffer[3] = rtc_bin2bcd(newtm.tm_min);
/* Save hour (0-23) with 24-hour time indication */ /* Save hour (0-23) with 24-hour time indication */
buffer[3] = rtc_bin2bcd(newtm.tm_hour); buffer[4] = rtc_bin2bcd(newtm.tm_hour);
/* Save the day of the month (1-31) */ /* Save the day of the month (1-31) */
buffer[4] = rtc_bin2bcd(newtm.tm_mday); buffer[5] = rtc_bin2bcd(newtm.tm_mday);
/* Save the day of the week (1-7) */ /* Save the day of the week (1-7) */
#if defined(CONFIG_LIBC_LOCALTIME) || defined(CONFIG_TIME_EXTENDED) #if defined(CONFIG_LIBC_LOCALTIME) || defined(CONFIG_TIME_EXTENDED)
buffer[5] = rtc_bin2bcd(newtm.tm_wday); buffer[6] = rtc_bin2bcd(newtm.tm_wday);
#else #else
buffer[5] = 0; buffer[6] = 0;
#endif #endif
/* Save the month (1-12) */ /* Save the month (1-12) */
buffer[6] = rtc_bin2bcd(newtm.tm_mon + 1); buffer[7] = rtc_bin2bcd(newtm.tm_mon + 1);
/* Save the year. Use years since 1968 (a leap year like 2000) */ /* Save the year. Use years since 1968 (a leap year like 2000) */
buffer[7] = rtc_bin2bcd(newtm.tm_year - 68); buffer[8] = rtc_bin2bcd(newtm.tm_year - 68);
/* Setup the I2C message */ /* Setup the I2C message */
msg[0].addr = PCF85263_I2C_ADDRESS; msg[0].addr = PCF85263_I2C_ADDRESS;
msg[0].flags = 0; msg[0].flags = 0;
msg[0].buffer = buffer; msg[0].buffer = buffer;
msg[0].length = 8; msg[0].length = 9;
/* Read back the seconds register */ /* Read back the seconds register */
@ -522,7 +526,7 @@ int up_rtc_settime(FAR const struct timespec *tp)
return ret; return ret;
} }
} }
while ((buffer[1] & PCF85263_RTC_SECONDS_MASK) > while ((buffer[2] & PCF85263_RTC_SECONDS_MASK) >
(seconds & PCF85263_RTC_SECONDS_MASK)); (seconds & PCF85263_RTC_SECONDS_MASK));
return OK; return OK;