Hi, I'm currently using Nucleo-U575ZI-Q.
I've done nothing to it except leaving it for a day and just plugged it to my laptop again but it doesn't recognize my board now.
When I connect it with my laptop, fail.txt shows up with a message "The interface firmware FAILED to reset/halt the target MCU"
I figured out that the voltage supplied by the USB is 0.7V which is way lower than the operating voltage.
How can I fix this?
I'll add a photo that shows how it looks after I hook up with my laptop.
Also this is the error message from STM32CubeProgrammer(I tried to reset the firmware):
22:50:39 : STM32CubeProgrammer API v2.17.0 | Windows-64Bits
22:50:47 : UR connection mode is defined with the HWrst reset mode
22:50:47 : ST-LINK SN : 002400203431511537393330
22:50:47 : ST-LINK FW : V3J15M7
22:50:47 : Board : NUCLEO-U575ZI-Q
22:50:47 : Voltage : 0.70V
22:50:47 : Error: No STM32 target found! If your product embeds Debug Authentication, please perform a discovery using Debug Authentication
Thanks to TDK, this is how I got so far.
Based on the schematic, I tracked how the power was supplied to the board and discovered that 1.0~1.1V was coming out from 5V, by testing pin TP3.
Since 5V_STLK and 5V are connected by default, the 5V_STLK was also approx 1.1V.
So, I removed the connector that connects 5V_STLK and 5V and checked again, figuring out that 5V_STLK worked properly as 5V.
Therefore, I'm supposing there's some short circuit connected with 5V.
I think this LDO has a problem because when I plug the USB C cable and switch the power selection pin header from 5V_STLK to 5V_USB_C, it suddenly heats up very high.
I get a decent 4.7V output from 5V but a 0.5V output from the 3V3 node.
I'll try some more and share the results.
Thanks:)
