issue with trinket M0 and the RTClibrary

[Kylobyte25]

Hi there, I'm able to program and demo any example code on a trinket m0, but when i use the RTC library to even just compile, it throws errors.

Code: Select all

C:\...Arduino\libraries\RTClib\src\RTC_DS1307.cpp: In member function 'void RTC_DS1307::writenvram(uint8_t, const uint8_t*, uint8_t)':
C:\...Arduino\libraries\RTClib\src\RTC_DS1307.cpp:109:18: error: invalid conversion from 'const uint8_t*' {aka 'const unsigned char*'} to 'uint8_t*' {aka 'unsigned char*'} [-fpermissive]
  109 |   i2c_dev->write(buf, size, true, &addrByte, 1);
      |                  ^~~
      |                  |
      |                  const uint8_t* {aka const unsigned char*}
In file included from C:...Arduino\libraries\RTClib\src\RTClib.h:25,
                 from C:\...Arduino\libraries\RTClib\src\RTC_DS1307.cpp:1:
C:\...Arduino\libraries\Adafruit_BusIO/Adafruit_I2CDevice.h:15:23: note:   initializing argument 1 of 'bool Adafruit_I2CDevice::write(uint8_t*, size_t, bool, uint8_t*, size_t)'
   15 |   bool write(uint8_t *buffer, size_t len, bool stop = true,
      |              ~~~~~~~~~^~~~~~
exit status 1
Error compiling for board Adafruit Trinket M0 (SAMD21).
An error occurred while uploading the sketch

I'm using a PCF8523. not sure whats going on here

[mikeysklar]

Are you using the Adafruit RTClibrary? If so, what version (v2.0.3 is current).

https://github.com/adafruit/RTClib

https://learn.adafruit.com/adafruit-ada ... th-arduino

[Franklin97355]

What code are you trying to compile(post the program, please), and do you have the libraries and boards updated?

[Kylobyte25]

Are you using the Adafruit RTClibrary? If so, what version (v2.0.3 is current).

Using the RTClib version 2.0.3 according to the Arduino library manager

[Kylobyte25]

What code are you trying to compile(post the program, please), and do you have the libraries and boards updated?

Libraries and boards are most recent version,
I'm just compiling the PCF8523 example in the library

i went into the library folder and removed the problematic file that its erroring on and it compiles now but now the upload process just says uploading. and it never ends..
typical trinket behavour i think. IT works 5% of the time, the bootloader on this thing is so annoying, i have to keep uploading over and over for it to, enter or exit the bootloader, i see it sometimes mounting the drive on and off, and then uploading rarely. I think my problem is solved?
it uploaded once and i was able to verify the example by removing RTC_DS1307.cpp from the library , it doesn't seem compatible with trinket m0

[Franklin97355]

using this learn article and the Trinket M0 I get a proper compilation.

[Kylobyte25]

using this learn article and the Trinket M0 I get a proper compilation.

what did you end up modifying?
My example default sketch size isnt the same as yours