Hello,
I see that UART3 and UART2 are connected from the Orin to the ATSAMD21G16B-AU_P3737 DEBUG MCU (U136, PA12, PA13, PA14, PA15). Is this necessary for debugging the Orin?
Also, where can I download the code for the ATSAMD21G16B-AU_P3737 MCU?
Regards,
Yoav
Refer to section 2.1.3 USB Micro B in Jetson AGX Orin Developer Kit Carrier Board Specification Jetson Download Center | NVIDIA Developer and for MCU firmware Jetson Download Center | NVIDIA Developer
Thank you for your kind reply Sgursal.
I read that section. All it says is: “A USB Micro B connector is provided for debug purposes only. The connector USB 2.0 interface comes
from a debug MCU. It takes in the following interfaces and control pins that can be used for debug
and development:
UART3_TX/RX_DEBUG
UART2_TX/RX”
And then there is a pinout of the 5-pins of the usb connector: GND, VBUS, DP, DN, and no-connect.
This section does not say anything about the MCU…
Also, refer to Button Power MCU section in Chapter 4. Reference Design Considerations in Jetson AGX Orin Series Design Guide (including AGX Orin Industrial) available through search Jetson Download Center | NVIDIA Developer
Thanks sgursal.
I looked at the Button Power MCU section in Chapter 4. Reference Design Considerations. It does not refer to the UARTs between the SOM and the MCU at all…
Also, I’m looking for the code for U136 on the P3737_A05 schematics (U136 is the ATSAMD21G16B-AU_P3737).
Please advise…
Regards,
Yoav
UARTs are needed for debugging any issues during development.
USB2.0 port is used for debug on AGX Orin dev kit. For custom design, you could use FTDI chip or use UART3 port directly. Firmware for the debug MCU is not provided.
Please check if this helps…Board Automation — Jetson Linux
Developer Guide 34.1 documentation and Board Automation — Jetson Linux
Developer Guide 34.1 documentation and Board Automation — NVIDIA Jetson Linux Developer Guide 1 documentation.
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