On a Cardputer Zero the device screen lists the Cap as "Cap LoRa-1262",
and --spi reaches it, with no profile: its wiring ships beside the
AIO's, listed when the board's own ext_5v_out switch says this is a
Cardputer Zero (spidev0.1 alone would claim every Pi with SPI on).
The Cap needs two things before the chip answers, and the wiring can
now say both. `leds` sets the switches the device tree hands to
gpio-leds — ext_5v_out powers the header, ext_usb_gpio_fun=0 keeps
the reset and interrupt pins on GPIO rather than USB — and puts them
back when the node ends, so the header is unpowered again after
MeshTerm quits. `pi4io_*` drives the Cap's PI4IOE5V6408 at 0x43, which
enables the RF path; a silent expander is reported as the Cap not
being attached.
Checked on the hardware: reset 26, busy 22, irq 23 on spidev0.1 (the
lines M5's factory test drives), the node comes up from a cold
header, and it hears the mesh at +12 dB.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Jean-Pierre MartineauandClaude Opus 5.5
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