Hello everyone,
I'm asking for your help because a friend of mine is having issues with his PCF8523 :
We did everything I did for it to run well, but at one point, he got errors. We first checked if it was detected by using the, it was just like me.
So the next step was to edit this file using and add pcf8523 to the list (dtoverlay=i2c-rtc,pcf8523,i2c5)
We also commented those every lines in "/lib/udev/hwclock-set" even if the RPi isn't connected to the internet (it's a camera project), but even not commented, the issue was still there.
Then, we tried a simple and it returned and it told us to use --verbose to see what was going on, so we did :
then we tried :
That's where it's odd, there are a lot of "permission denied", some topics I've looked into before suggested the RTC might be defective...
My working PCF8523 is returning that for this command :
That's where we stopped because we're newbies and I was stucked...
Thank you for your help (something I forgot to say, the .img flashed on the SD card if from a one year ago alpha version, but we have the same .img)
I'm asking for your help because a friend of mine is having issues with his PCF8523 :
We did everything I did for it to run well, but at one point, he got errors. We first checked if it was detected by using the
Code:
i2cdetect -y 5So the next step was to edit this file using
Code:
sudo nano /boot/config.txtWe also commented those every lines in "/lib/udev/hwclock-set" even if the RPi isn't connected to the internet (it's a camera project), but even not commented, the issue was still there.
Then, we tried a simple
Code:
sudo hwclock -rCode:
hwclock: Cannot access the Hardware Clock via any known methodCode:
sudo hwclock --verbosehwclock from util-linux 2.36.1System Time 1733725044.760249Trying to open: /dev/rtc0Trying to open: /dev/rtcTrying to open: /dev/misc/rtcNo usable clock interface found.hwclock: Cannot access the Hardware Clock via any known methodCode:
find /sys -name "*rtc*"find: '/sys/kernel/tracing': Permission denied find: ‘/sys/kernel/debug': Permission denied/sys/class/rtc/sys/devices/platform/soc/fe201000.serial/tty/ttyAMAO/uartclk/sys/devices/platform/serial8250/tty/ttyS0/uartclkfind: '/sys/fs/pstore': Permission denied find: '/sys/fs/bpf': Permission denied /sys/bus/platform/drivers/vc4_crtc /sys/bus/i2c/drivers/rtc-pcf8523 /sys/module/vc4/drivers/platform:vc4_crtc/sys/module/rtc_pcf8523/sys/module/rtc_pcf8523/drivers/i2c: rtc-pcf8523My working PCF8523 is returning that for this command :
Code:
find /sys -name "*rtc*"find: ‘/sys/kernel/tracing’: Permission deniedfind: ‘/sys/kernel/debug’: Permission denied/sys/class/rtc/sys/class/rtc/rtc0/sys/devices/platform/soc/fe205a00.i2c/i2c-5/5-0068/rtc/sys/devices/platform/soc/fe205a00.i2c/i2c-5/5-0068/rtc/rtc0/sys/devices/platform/soc/fe201000.serial/tty/ttyAMA0/uartclk/sys/devices/platform/serial8250/tty/ttyS0/uartclkfind: ‘/sys/fs/pstore’: Permission deniedfind: ‘/sys/fs/bpf’: Permission denied/sys/bus/platform/drivers/vc4_crtc/sys/bus/i2c/drivers/rtc-pcf8523/sys/module/vc4/drivers/platform:vc4_crtc/sys/module/rtc_pcf8523/sys/module/rtc_pcf8523/drivers/i2c:rtc-pcf8523Thank you for your help (something I forgot to say, the .img flashed on the SD card if from a one year ago alpha version, but we have the same .img)
Statistics: Posted by Oceanique — Sat Dec 14, 2024 12:34 pm — Replies 0 — Views 18