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Can you verify that your SOM is fully seated in the connectors to the carrier card? Even though SD card boot works, the JTAG signals may not be fully connected. The SOM connectors are very stiff and sometimes difficult to mate the SOM to the carrier.
Also, are you using the Vivado tools on a Linux or Windows host? I have noticed on a Linux host that the JTAG drivers are very finicky and sometimes require a few retries to get Vivado to recognize the Zynq device.
Thank you for your suggestion.
It worked after unseating and seating the board again to the carrier board.
I am using the Vivado tools on a Windows host.
1. PicoZed FMC Carrier Card V2 + PicoZed 7Z030 SOM
2. Digilent JTAG HS3 cable
Software used: Vivado 2020.1
I want to program the Programmable logic with bitstream via JTAG connection through Vivado. But I am getting an error message "No devices detected on target" on either trying to "auto-connect" or "open new target with different JTAG clock frequencies" option under "open hardware manager" in Vivado. Error message is shown in the snippet below.
Following are the jumper settings:
1. JP3 is closed in position 1-2
2. JP4 is closed
3. JP5 closed in the position 1-2
4. PicoZed SOM is set in JTAG boot mode
On turning on the power of the board, PG_MODULE(D4 LED), VIN_HDR(D5 LED) and D14 LED turns on (carrier board) and D3 LED turns on (PicoZed SOM). I have previously tried to perform SD boot which was successful and PS red LEDs flashed.
Could you please help me figure out what could be the issue?