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Maybe add working extra GPIO pins to portduino

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This commit is contained in:
Jonathan Bennett
2026-01-11 13:39:05 -06:00
parent e8ddda6f0d
commit 09ddf9bfca
2 changed files with 30 additions and 0 deletions
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28
src/platform/portduino/PortduinoGlue.cpp
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@@ -487,6 +487,11 @@ void portduinoSetup()
max_GPIO = i->pin;
}
for (auto i : portduino_config.extra_pins) {
if (i.enabled && i.gpiochip > max_GPIO)
max_GPIO = i.pin;
}
gpioInit(max_GPIO + 1); // Done here so we can inform Portduino how many GPIOs we need.
// Need to bind all the configured GPIO pins so they're not simulated
@@ -504,6 +509,19 @@ void portduinoSetup()
}
}
}
for (auto i : portduino_config.extra_pins) {
// In the case of a ch341 Lora device, we don't want to touch the system GPIO lines for Lora
// Those GPIO are handled in our usermode driver instead.
if (i.config_section == "Lora" && portduino_config.lora_spi_dev == "ch341") {
continue;
}
if (i.enabled) {
if (initGPIOPin(i.pin, gpioChipName + std::to_string(i.gpiochip), i.line) != ERRNO_OK) {
printf("Error setting pin number %d. It may not exist, or may already be in use.\n", i.line);
exit(EXIT_FAILURE);
}
}
}
// 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") {
@@ -717,6 +735,16 @@ bool loadConfig(const char *configPath)
portduino_config.has_gps = 1;
}
}
if (yamlConfig["GPIO"]["ExtraPins"]) {
for (auto extra_pin : yamlConfig["GPIO"]["ExtraPins"]) {
portduino_config.extra_pins.push_back(pinMapping());
portduino_config.extra_pins.back().config_section = "GPIO";
portduino_config.extra_pins.back().config_name = "ExtraPins";
portduino_config.extra_pins.back().enabled = true;
readGPIOFromYaml(extra_pin, portduino_config.extra_pins.back());
}
}
if (yamlConfig["I2C"]) {
portduino_config.i2cdev = yamlConfig["I2C"]["I2CDevice"].as<std::string>("");
}