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Update gpio-peripherals.mdx

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Clarified the build instructions.  The LED polarity wasn't specified.
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pdxlocations 2023-06-02 05:22:14 -07:00 committed by GitHub
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docs/configuration/gpio-peripherals.mdx
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@ -59,7 +59,7 @@ The procedure using the python command line tool is:
meshtastic --seturl theurlyoucopiedinstep3 meshtastic --seturl theurlyoucopiedinstep3
``` ```
Now both devices should be able to talk over the `gpio` channel. Send a text message from one to the other to verify. Also run `--nodes` to verify the second node shows up. Now both devices should be able to talk over the `gpio` channel. Send a text message from one the other other verify. Also run `--nodes` to verify the second node shows up.
### Masks ### Masks
@ -132,9 +132,9 @@ You can add a simple LED and resistor to validate that the GPIO operations work
### Preparation ### Preparation
1. Disconnect the remote device from power (battery/usb) 1. Disconnect the remote device from power (battery/usb)
2. Add a resistor from yellow wire to the one end of the LED (either end of the resistor is OK, either end of the LED is OK) 2. Connect the resistor to the longer (positive) lead of the LED and the yellow wire to the other end of the resistor
3. Add the yellow wire from a GPIO pin that will not cause any issues (ex: for TLoraV1, we can use GPIO21) 3. Connect the other end of the yellow wire to a GPIO pin that will not cause any issues (ex: for TLoraV1, we can use GPIO21)
4. Add the black "ground" wire from the ground pin on the device (ex: for TLoraV1 it is the end pin next to the RST button) to the other end of the LED 4. Connect the black "ground" wire from the ground pin on the device (ex: for TLoraV1 it is the end pin next to the RST button) to the shorter (negative) lead of the LED
5. Power on the device 5. Power on the device
### Validation ### Validation