Example #1 does not work with AT24C02 eeprom

[pkhardage]

Subject of the issue

Example #1 does not run after downloading library from Github and compiling and uploading successfully. AT24C02 is only device connected to I2C bus. I2c scanner identifies AT24C02 with address 0x50. SparkFun tested SW with 1 mbit and 500 kbit memories and I suspect the AT24C02 at 2 kbits is not tested or not supported.

Your workbench

Using my SW tests board with DFROBOT Beetle and Arduino IDE and works with other I2C libraries. Proven hardware system.

• What development board or microcontroller are you using?
• What version of hardware or breakout board are you using?
• How is the breakout board wired to your microcontroller?
• How is everything being powered?
• Are there any additional details that may help us help you?

Steps to reproduce

Use example #1, download library, compile-download, should see some serial monitor output but none.

Expected behavior

Should at least print first Serial.print statement in SETUP.

Actual behavior

Tell us what happens instead

[nseidle]

24LC02s should be working just fine:

// 24LC02 - 2048 bit / 256 bytes - 1 address byte, 8 byte page
myMem.setAddressBytes(1);
myMem.setPageSizeBytes(8);
myMem.setMemorySizeBytes(256);

I test on all EEPROM sizes (ok, except LC256).

I'm going to close the issue because it's working for me. Please continue to post and I'll try to help you troubleshoot.

[nseidle]

Hold on, I may have been on a bad branch. Let me re-test.

[nseidle]

Alright, please give v3.1.1 a try and let me know what problems you see.

[pkhardage]

Thanks nseidle, I am new to the Github environment so I see you released a v3.1.1 eleven hours ago but I only see v3.1.0 as available for install. How do I get to v3.1.1 to try even if it is not ready for public release?

[nseidle]

My fault. I forgot to increase the library version. Give it a few minutes and should be available via lib manager.

[pkhardage]

Ok, will install and let you know result. Thanks

[pkhardage]

Lib manager still showing v3.1.0 as latest release.

[pkhardage]

SparkFun_External_EEPROM examples no longer showing in Arduino IDE.

[nseidle]

Dunno what's up with the Arduino lib manager. It's showing up here.

For the interim, please install via zip method.

[pkhardage]

Nathan, I will be out for a while. The v3.1.1 has not shown up and the SparkFun_External_EEPROM library examples have disappeared. Only the SparkFun VL53L1X Laser Dist. Sensor is left in examples for SparkFun. Don't know why but happened with changes on Github made this morning. I will check later today when I get back home.

…

On 10/24/2023 10:47 AM MDT Nathan Seidle ***@***.***> wrote: Dunno what's up with the Arduino lib manager. It's showing up here https://downloads.arduino.cc/libraries/library_index.json. For the interim, please install via zip method https://docs.arduino.cc/software/ide-v1/tutorials/installing-libraries#importing-a-zip-library. — Reply to this email directly, view it on GitHub #26 (comment), or unsubscribe https://github.com/notifications/unsubscribe-auth/ATI7LRIHKTTW6U26EFFCKTTYA7WJXAVCNFSM6AAAAAA6MXOH3KVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTONZXGYZTEMRYGU. You are receiving this because you authored the thread.Message ID: ***@***.***>

[pkhardage]

3.1.2 up now? Do I have to select which memory chip I am compiling for and uncomment those lines under Wirebegin()??
Are there user directions on "how to use" that I am missing?

[pkhardage]

I have downloaded v3.1.2 and the new example 1 file but still have no results. What do I do next?

[nseidle]

Did you modify Ex1 to the following:

// 24LC02 - 2048 bit / 256 bytes - 1 address byte, 8 byte page
myMem.setAddressBytes(1);
myMem.setPageSizeBytes(8);
myMem.setMemorySizeBytes(256);