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Add GPIO_DETECT_PA portduino config, and support 13302 detection with it (#9741)

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* Add GPIO_DETECT_PA portduino config, and support 13302 detection with it.

* Tweak PA detect gpio to use pinMapping

* minor yaml output fixes

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
This commit is contained in:
Jonathan Bennett
2026-02-25 14:18:07 -06:00
committed by GitHub
co-authored by Ben Meadors
parent a93d4d7e9d
commit 5a068431ed
5 changed files with 36 additions and 8 deletions
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src/platform/portduino/PortduinoGlue.cpp
+21
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@@ -537,6 +537,27 @@ void portduinoSetup()
}
}
// In one test, this dance seemed necessary to trigger the pin to detect properly.
if (portduino_config.lora_pa_detect_pin.enabled) {
pinMode(portduino_config.lora_pa_detect_pin.pin, INPUT_PULLDOWN);
sleep(1);
if (digitalRead(portduino_config.lora_pa_detect_pin.pin) == LOW) {
std::cout << "Pin " << portduino_config.lora_pa_detect_pin.pin << " PULLDOWN is LOW" << std::endl;
}
pinMode(portduino_config.lora_pa_detect_pin.pin, INPUT_PULLUP);
sleep(1);
if (digitalRead(portduino_config.lora_pa_detect_pin.pin) == HIGH) {
std::cout << "Pin " << portduino_config.lora_pa_detect_pin.pin << " PULLUP is HIGH, dropping PA curve" << std::endl;
portduino_config.num_pa_points = 1;
portduino_config.tx_gain_lora[0] = 0;
} else {
std::cout << "Pin " << portduino_config.lora_pa_detect_pin.pin << " PULLUP is LOW, using PA curve" << std::endl;
}
// disable bias once finished
pinMode(portduino_config.lora_pa_detect_pin.pin, INPUT);
}
// Only initialize the radio pins when dealing with real, kernel controlled SPI hardware
if (portduino_config.lora_spi_dev != "" && portduino_config.lora_spi_dev != "ch341") {
SPI.begin(portduino_config.lora_spi_dev.c_str());