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snehal_p's avatar
snehal_p
Icon for Contributor rankContributor
3 years ago

interfacing RTC module to hps driven i2c pins

Hello, I need help in interfacing RTC 3231 breakout board to the hps driven pins. While trying to read the rtc I'm getting connection timed out. PFA screenshot for the error. Can anyone help wit...
tehjingy_Altera's avatar
tehjingy_Altera
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hi snehal_p


I found that the DE1SOC has a multiplexer for the I2C.

Could you try setting the HPS_I2C_CONTROL (GPIO48) high before trying out the i2c command?


Regards

Jingyang, Teh


  • snehal_p's avatar
    snehal_p
    Icon for Contributor rankContributor
    3 years ago

    Hello Jingyang,

    PFA screenshot of the debug console, 68h is the address for the rtc breakout board. It seems that it is detecting rtc and also returns value for i2cget command but when executing rtc application it returns wrong values.

    PFA rtc.c code.

    Thanks,

    snehal_p