[I2C on TM4c1294 doesn't work]

11 hours ago, Rei Vilo said:

If you have a logic analyser, check the speed of the I²C port. The IC may not be compatible with 400 kHz.

Dear Rei,

I have checked it before. I set I2C port  to 100kHz standard.

[I2C on TM4c1294 doesn't work]

Daer Rei, 

Yes, i have 4.7k pull-up resistors. 

 

[I2C on TM4c1294 doesn't work]

Yep, I tried. I have 2 modules for each of them. All have same issue when works with tm4c. But they work well with arduino Uno/mega2560.

[I2C on TM4c1294 doesn't work]

Thank Rei for your infomations.

Unfortunately, it still doesn't work. With am2315 i received all 0-byte and with ds1307 i received random bytes. 

I'm using Adafruit_AM2315 and rtclib libs.

[I2C on TM4c1294 doesn't work]

8 hours ago, Rei Vilo said:

Help yourself:

• perform a search on DS1307 on this very forum,
• read the datasheet.

Hint: voltage.

Dear Rei,

Thank you for your reply. I don't think it is voltage problem. i already had a logic converter(GTL2003) which convert 3.3V to 5V. I tested I2C bus which arduino uno/mega. It works well.

[I2C on TM4c1294 doesn't work]

Hello everyone,

I'm trying to use I2C0 on tm4c1294 to communicate with rtc ds1307/ am2315 but it doesn't work. I was tried read many threads about i2c issue on tiva c with no luck. Here are one of them:

Have anyone successful using I2C on tiva C (tm4c1294ncpdt)? Guide me, pls.