Hi,
I am using your official GUI to read and write registers on the STW81200-EVB.
While the GUI initially indicates that it is connected, I am unable to read the Device ID or write any configuration data. You can find logs of your GUI as attachment.
Below is a summary of what I have tried and my current suspicions:
Steps I Have Tried:
- Powered the board using:
- USB
- External power(Switch S1 is switched to A=EXT) - Changed the U5 jumper between the 4V5 and VCC positions.
- Uninstalled and reinstalled both the GUI software and the FTDI driver.
- Restarted the PC, used different USB ports and cables, and even tested on a second PC.
Current Issues:
- At startup, the GUI displays: "USB connection is OK."
- Read operations: No errors are shown, but the Device ID is always 0xFF (suggesting an issue with the MISO line).
- Write operations: An error appears: "Uncorrect device ID... Exiting. Tip: power supply might be disconnected."
- The 100 MHz clock is present at top right side of the crystal.
- The Locked LED never turns on, unlike a previous board I tested.
- The GUI states that the board is "Locked," but the LED indicates otherwise.
- I probed the SPI lines using both a logic analyzer and an oscilloscope but observed no signal changes on any line.
Suspected Issue:
I suspect the FTDI board might not be functioning correctly!!!
