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Found 3 results

  1. Hello everyone! I'm trying to install Petalinux on a Cora Z7-10 I followed all the steps described here: github.com/Digilent/Petalinux-Cora-Z7-10 but when I try to boot it I get this message: hwclock: can't open '/dev/misc/rtc': no such file or directory after this, I can't write anything in Minicom. As in my folder /dev didn't have the misc folder, following some advice that I found on the net I created the folder and first tried to soft-link /dev/rtc0 and then hard-link it also but none of those worked, I still get the same error. Did anyone go through the same issue
  2. Hello, I am using a Pmod Grove RTC with a PYNQ board, and it seems to be operating normally when it is powered directly from the 3.3 V of the board. However, when I plug in the backup battery (3.0 V CR1225) into the grove RTC and have it also connected to the board, I can not read or write to the clock. It seems the backup battery somehow disables the device. After reading the page 3 of datasheet of the DS1307 chip, I noticed something weird: "DC power is provided to the device on these pins. VCC is the +5V input. When 5V is applied within normal limits, the device is fully accessible an
  3. Hello, I have got a Pmod grove RTC which I hoped to be able to use it the same way I have been using my Pmod Grove IMU (using the example C code that is provided here), however I noticed there is no such example code for the Grove RTC. I am aware of the Arduino and python scripts that are available on Grove RTC webpage, but due to some limitations I need to use it the same way I am using Grove IMU device (which is using it with PYNQ board). Does anybody know if there is such example code written in C language for this device out there that I can use? It seems to be a simple I2C device, howe