Designed a RTC board that connects to the PI CM4 with I2c.
Here is the datasheet https://www.analog.com/media/en/technic ... s1339b.pdf
Here Linux kernel shows that the chip driver is there
https://github.com/torvalds/linux/blob/ ... 1307.c#L40
It detects the CHIP as DS1307, i guess they are similar.I2C also detected it And when i try to read the time it gives thisThere is no lose connection, and here is the schematics
Here is the datasheet https://www.analog.com/media/en/technic ... s1339b.pdf
Here Linux kernel shows that the chip driver is there
https://github.com/torvalds/linux/blob/ ... 1307.c#L40
It detects the CHIP as DS1307, i guess they are similar.
Code:
asd@asd:~ $ dmesg | grep rtc[ 2.371346] rtc-ds1307 1-0068: registered as rtc0[ 2.372432] rtc-ds1307 1-0068: setting system clock to 2000-01-01T00:00:12 UTC (946684812)[ 2.373311] vc4-drm gpu: bound fe206000.pixelvalve (ops vc4_crtc_ops [vc4])[ 2.373680] vc4-drm gpu: bound fe207000.pixelvalve (ops vc4_crtc_ops [vc4])[ 2.374053] vc4-drm gpu: bound fe20a000.pixelvalve (ops vc4_crtc_ops [vc4])[ 2.374305] vc4-drm gpu: bound fe216000.pixelvalve (ops vc4_crtc_ops [vc4])[ 2.378352] vc4-drm gpu: bound fec12000.pixelvalve (ops vc4_crtc_ops [vc4])[ 369.340213] rtc-ds1307 1-0068: read error -5Code:
asd@asd:~ $ sudo i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f00: -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- Code:
asd@asd:~ $ sudo hwclock -rhwclock: ioctl(RTC_RD_TIME) to /dev/rtc0 to read the time failed: Input/output errorStatistics: Posted by Shaber — Wed Aug 07, 2024 8:57 pm