Power up Raspberry Pi 5 for the first time with UART debug mode (for headless setup)

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The new Raspberry Pi 5 has an on-board UART debug port. So I tried to connect Raspberry Pi Debug Probe and power it up for the first time. FYI, UART debug mode is always active and enabled. You can access early boot/firmware info and linux console. The good thing is, no more having to enable and share a UART from the GPIO header!

🛒 Raspberry Pi 5
🛒 Raspberry Pi Debug Probe
🛒 Raspberry Pi Approved MakerDisk microSD Card
🛒 5V 3.5A USB-C Universal Power Adapter

#RaspberryPi #RaspberryPi5 #SerialRemote
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The debug probe has two 3-pin connections labeled U and D. For the RPi 5, use the U connection.

bsmorgan
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I am using Termius rather than Putty serial connect to rpi5, following your steps and UART_RX (GPIO7) not in activity and turn green. Nothing output on screen, I'd wonder you how to config rpi5.

microcharon
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Will never use this feature but I'm glad it exists for tinkerers

nikobellic
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There's any "bios prompt" available? To change settings etc... That would be very nice.

framegrace
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I am trying to use the same function on Pi4, with the three cables connect to the GPIO pins. Black (gnd) to pin 6, Orangle (Tx) to pin 8(GPIO14), Yellow(Rx) to pin10 (GPIO15). The debug probe is identified on the windows computer at COM7, but when putty is initiated, its a blank screen. I have enabled UART on raspberry pi. I am yet to find any tutorial which talks about this connectivity using the Pi debug Probe.

kpsthakur
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Okay. Then what? What situations would this come in handy in?

luigiprovencher