RTC only works after disconnecting
Posted: Sat Aug 29, 2015 9:56 amHello, I've a strange behavor with my DS3231 and cant figure out the Problem:
When I upload a sketch and look at the serial Monitor it sais:
If I disconnect SDA for a second it writes:
Reboot works fine, its just after uploading a new Sketch I have to disconnect it.
Im useing a brand new ESP-07, Generic and RTC lib from https://github.com/Makuna/Rtc
Code Example: (Minimiced)
Hope somebody can help me with that...
When I upload a sketch and look at the serial Monitor it sais:
Code: Select all
85/165/2009 37:165:
If I disconnect SDA for a second it writes:
Code: Select all
01/01/2000 00:06:14
Reboot works fine, its just after uploading a new Sketch I have to disconnect it.
Im useing a brand new ESP-07, Generic and RTC lib from https://github.com/Makuna/Rtc
Code Example: (Minimiced)
Code: Select all
#include <Wire.h>
#include <RtcDS3231.h>
RtcDS3231 rtc;
RtcDateTime t;
void setup() {
Serial.begin(9600);
Wire.begin(SDA,SCL); //(Connected to GPIO4,GPIO5)
rtc.Begin();
}
void loop()
{
t = rtc.GetDateTime();
printDateTime(t);
}
#define countof(a) (sizeof(a) / sizeof(a[0]))
void printDateTime(const RtcDateTime& dt)
{
char datestring[20];
snprintf_P(datestring,
countof(datestring),
PSTR("%02u/%02u/%04u %02u:%02u:%02u"),
dt.Month(),
dt.Day(),
dt.Year(),
dt.Hour(),
dt.Minute(),
dt.Second() );
Serial.println(datestring);
}
Hope somebody can help me with that...