2023-04-27 12:18 AM
2023-05-03 04:06 AM
Sure, I share it little bit later. Have you measure the battery drain current with Vdd on and off, maybe it would tell something ?
2023-05-03 04:21 AM
IMO it's most likely a hardware problem.
Check *all* VDD and VSS pins (including the analog ones) and PDR_ON, being physically connected where they ought to be (measure directly on pins, suspect bad solder joints).
JW
2023-05-03 11:06 AM
2023-05-08 03:59 AM
Thanks.
I run your code on my STM32f407ZGT board but the problem wasn't solved. Time was reset after unplugging even I programed like this code on STM32f429 Nucleo board and I had similar problem. I really don't know how to fix it ??
2023-05-08 04:04 AM
I think this issue is related to software because I have similar problem on stm32f4 Nocleo board
2023-05-08 04:25 AM
Hmmm.... Did you open the SB156 in F429- nucleo board ?
2023-05-08 04:27 AM - edited 2023-11-20 07:04 AM
Which Nucleo?
Did you remove the SB connecting VBAT to VDD?
JW
2023-05-08 11:43 PM
Thanks for your tip.
I remove the jumper and It worked properly but about the custom board the problem wasn't fixed. Current of drain in both situations was 0 A !!?
2023-05-08 11:48 PM
Thanks for your tip.
Nucleo stm32f429 144 pin.
After removing jumper it worked properly although the problem of custom board hasn't been fixed.
2023-05-09 01:02 AM
Can you share the schematic of custom board with us ?