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Diffstat (limited to 'host/docs/usrp2.rst')
| -rw-r--r-- | host/docs/usrp2.rst | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/host/docs/usrp2.rst b/host/docs/usrp2.rst index 3031a0075..2ee49646f 100644 --- a/host/docs/usrp2.rst +++ b/host/docs/usrp2.rst @@ -50,6 +50,8 @@ Load the images onto the on-board flash (USRP-N Series only) ------------------------------------------------------------------------ The USRP-N Series can be reprogrammed over the network to update or change the firmware and FPGA images. +When updating images, always burn both the FPGA and firmware images before power cycling. +This ensures that when the device reboots, it has a compatible set of images to boot into. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Use the net burner tool (unix) @@ -75,8 +77,11 @@ Its possible to put the device into an unusable state by loading bad images. Fortunately, the USRP-N Series can be booted into a safe (read-only) image. Once booted into the safe image, the user can once again load images onto the device. -To boot into the safe image, hold down the reset button while power-cycling the device. -The reset button is a pushbutton switch (S2) located inside the enclosure. +The safe-mode button is a pushbutton switch (S2) located inside the enclosure. +To boot into the safe image, hold-down the safe-mode button while power-cycling the device. +Continue to hold-down the button until the front-panel LEDs blink and remain solid. + +When in safe-mode, the USRP-N Series will always have the IP address 192.168.10.2 ------------------------------------------------------------------------ Setup networking @@ -163,13 +168,15 @@ The USRP2 will reply to icmp echo requests. ping 192.168.10.2 -**Monitor the USRP2:** -You can read the serial port on the rear of the USRP2 -to get debug verbose from the embedded microcontroller. +**Monitor the serial output:** +Read the serial port to get debug verbose from the embedded microcontroller. Use a standard USB to 3.3v-level serial converter at 230400 baud. The microcontroller prints useful information about IP addresses, MAC addresses, control packets, and fast-path settings. +* **USRP2:** Serial port located on the rear edge +* **N210:** Serial port located on the left side + **Monitor the host network traffic:** Use wireshark to monitor packets sent to and received from the USRP2. |