Timeline for How to improve date-time control from RTC?
Current License: CC BY-SA 3.0
11 events
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| Apr 13, 2017 at 12:50 | history | edited | Community Bot |
replaced http://arduino.stackexchange.com/ with https://arduino.stackexchange.com/
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| Oct 16, 2016 at 13:54 | vote | accept | jules | ||
| Sep 27, 2016 at 23:48 | comment | added | jules | There was an underlying issue with same-name components in different libraries. Very helpful explanation and advice in another question resolved the compile errors. Now I can now try to use the two recommended libraries for date-time. | |
| Sep 27, 2016 at 15:06 | history | edited | Edgar Bonet | CC BY-SA 3.0 |
+ sun_rise() and sun_set() from avr-libc.
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| Sep 26, 2016 at 21:45 | comment | added | jules | Looked at files on my laptop, see installed Stoffregen Time library (link in your answer above) has time.h in the Time-master folder. Where do I look for typedef struct {...} etc please? | |
| Sep 26, 2016 at 20:18 | comment | added | Edgar Bonet |
@jules: TestRTC has #include <Time.h> on line 46. Did it find that header? Don't you have typedef struct {...} tmElements_t, TimeElements, *tmElementsPtr_t; in it?
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| Sep 26, 2016 at 12:23 | comment | added | jules | Checked both two new libraries are present, Wire was already installed. Compile TestRTC has exit status 1 'tmElements_t' does not name a type | |
| Sep 26, 2016 at 12:01 | comment | added | jules | Great to know I have required hardware, thanks. I installed DS3232 and Time libraries you linked above. TestRTC, the example sketch for tecsmith DS3232 library gave compile errors that I cannot understand. Error text too long to add here. Any advice on how to resolve this? | |
| Sep 26, 2016 at 10:06 | comment | added | Edgar Bonet | @jules: All the peripherals of the Arduino Uno are part of the ATmega328P chip. Thus you still have them on a "barebones" Uno (i.e. the bare ATmega). The I2C port (called TWI by Atmel) is available on pins PC4 = A4 = SDA and PC5 = A5 = SCL. You would use this port through the standard Wire library. | |
| Sep 26, 2016 at 9:15 | comment | added | jules | Many thanks and sorry I don't fully understand. Using SoftI2C.h because I followed example doing it that way. Unsure whether my RTC module and atmega chip will communicate without it. Started with Uno board connected to laptop via USB, using serial window to see what was happening. At that point had to add Serial.flush(). Left it in, being unsure if needed later. Have moved the atmega chip from Uno to a breadboard with no 'peripherals' in order to minimise power usage. How do I determine whether "hardware I2C port" is available or not? Many thanks for patience with total beginner! | |
| Sep 26, 2016 at 8:20 | history | answered | Edgar Bonet | CC BY-SA 3.0 |