diff --git a/src/driver/at32/adc.c b/src/driver/at32/adc.c
index 8be05fd2f..54a566065 100644
--- a/src/driver/at32/adc.c
+++ b/src/driver/at32/adc.c
@@ -54,6 +54,8 @@ static void adc_init_pin(adc_chan_t chan, gpio_pins_t pin) {
   if (adc_pins[chan].pin != PIN_NONE) {
     gpio_config_t gpio_init;
     gpio_init.mode = GPIO_ANALOG;
+    gpio_init.output = GPIO_OPENDRAIN;
+    gpio_init.output = GPIO_DRIVE_NORMAL;
     gpio_init.pull = GPIO_NO_PULL;
     gpio_pin_init(pin, gpio_init);
   }
diff --git a/src/driver/at32/gpio.c b/src/driver/at32/gpio.c
index 3b02125a0..2de7a6b0f 100644
--- a/src/driver/at32/gpio.c
+++ b/src/driver/at32/gpio.c
@@ -5,24 +5,24 @@
 #include "driver/rcc.h"
 #include "driver/timer.h"
 
-static const uint32_t mode_map[] = {
+static const gpio_mode_type mode_map[] = {
     [GPIO_INPUT] = GPIO_MODE_INPUT,
     [GPIO_OUTPUT] = GPIO_MODE_OUTPUT,
     [GPIO_ANALOG] = GPIO_MODE_ANALOG,
     [GPIO_ALTERNATE] = GPIO_MODE_MUX,
 };
 
-static const uint32_t output_map[] = {
+static const gpio_output_type output_map[] = {
     [GPIO_PUSHPULL] = GPIO_OUTPUT_PUSH_PULL,
     [GPIO_OPENDRAIN] = GPIO_OUTPUT_OPEN_DRAIN,
 };
 
-static const uint32_t speed_map[] = {
+static const gpio_drive_type speed_map[] = {
     [GPIO_DRIVE_NORMAL] = GPIO_DRIVE_STRENGTH_MODERATE,
     [GPIO_DRIVE_HIGH] = GPIO_DRIVE_STRENGTH_STRONGER,
 };
 
-static const uint32_t pull_map[] = {
+static const gpio_pull_type pull_map[] = {
     [GPIO_NO_PULL] = GPIO_PULL_NONE,
     [GPIO_UP_PULL] = GPIO_PULL_UP,
     [GPIO_DOWN_PULL] = GPIO_PULL_DOWN,
diff --git a/src/driver/at32/spi.c b/src/driver/at32/spi.c
index d3fd7d8d2..adc70c16a 100644
--- a/src/driver/at32/spi.c
+++ b/src/driver/at32/spi.c
@@ -188,7 +188,7 @@ void spi_reconfigure(spi_bus_device_t *bus) {
   if (config->mode != bus->mode) {
     config->mode = bus->mode;
 
-    gpio_config_t gpio_init;
+    gpio_config_t gpio_init = gpio_config_default();
     gpio_init.mode = GPIO_ALTERNATE;
     gpio_init.drive = GPIO_DRIVE_HIGH;
     gpio_init.output = GPIO_PUSHPULL;
diff --git a/src/driver/gpio.h b/src/driver/gpio.h
index 5b2649469..a9390582d 100644
--- a/src/driver/gpio.h
+++ b/src/driver/gpio.h
@@ -5,8 +5,8 @@
 #include "driver/timer.h"
 
 typedef enum {
-  GPIO_INPUT,
   GPIO_OUTPUT,
+  GPIO_INPUT,
   GPIO_ANALOG,
   GPIO_ALTERNATE,
 } gpio_mode_t;
@@ -50,6 +50,13 @@ extern const gpio_pin_def_t gpio_pin_defs[PINS_MAX];
 extern const gpio_af_t gpio_pin_afs[];
 extern const uint32_t GPIO_AF_MAX;
 
+#define gpio_config_default() { \
+    .mode = GPIO_OUTPUT,        \
+    .output = GPIO_PUSHPULL,    \
+    .drive = GPIO_DRIVE_NORMAL, \
+    .pull = GPIO_NO_PULL,       \
+}
+
 void gpio_ports_init();
 
 void gpio_pin_init(gpio_pins_t pin, gpio_config_t config);
diff --git a/src/driver/serial.c b/src/driver/serial.c
index 220b54ddf..6475b3bdf 100644
--- a/src/driver/serial.c
+++ b/src/driver/serial.c
@@ -38,7 +38,7 @@ static bool serial_hard_pin_init(serial_port_t *serial, serial_port_config_t con
 
   bool swap = false;
 
-  gpio_config_t gpio_init;
+  gpio_config_t gpio_init = gpio_config_default();
   gpio_init.mode = GPIO_ALTERNATE;
   gpio_init.drive = GPIO_DRIVE_HIGH;
   if (config.half_duplex) {
diff --git a/src/driver/serial_4way_avr_bl.c b/src/driver/serial_4way_avr_bl.c
index b1ad50554..0c30d6614 100644
--- a/src/driver/serial_4way_avr_bl.c
+++ b/src/driver/serial_4way_avr_bl.c
@@ -53,7 +53,7 @@ static void esc_set_low(gpio_pins_t pin) {
 }
 
 static void esc_set_input(gpio_pins_t pin) {
-  gpio_config_t gpio_init = {0};
+  gpio_config_t gpio_init = gpio_config_default();
   gpio_init.mode = GPIO_INPUT;
   gpio_init.output = GPIO_OPENDRAIN;
   gpio_init.pull = GPIO_UP_PULL;
@@ -62,7 +62,7 @@ static void esc_set_input(gpio_pins_t pin) {
 }
 
 static void esc_set_output(gpio_pins_t pin) {
-  gpio_config_t gpio_init = {0};
+  gpio_config_t gpio_init = gpio_config_default();
   gpio_init.mode = GPIO_OUTPUT;
   gpio_init.output = GPIO_PUSHPULL;
   gpio_init.pull = GPIO_NO_PULL;
diff --git a/src/driver/spi.c b/src/driver/spi.c
index e650c5873..e7d698a81 100644
--- a/src/driver/spi.c
+++ b/src/driver/spi.c
@@ -187,4 +187,4 @@ void spi_txn_finish(spi_ports_t port) {
 
   spi_dev[port].dma_done = true;
   spi_txn_continue_port(port);
-}
\ No newline at end of file
+}
diff --git a/src/driver/stm32/adc.c b/src/driver/stm32/adc.c
index 6220ab227..ed8c976a0 100644
--- a/src/driver/stm32/adc.c
+++ b/src/driver/stm32/adc.c
@@ -87,6 +87,8 @@ static void adc_init_pin(adc_chan_t chan, gpio_pins_t pin) {
   if (adc_pins[chan].pin != PIN_NONE) {
     gpio_config_t gpio_init;
     gpio_init.mode = GPIO_ANALOG;
+    gpio_init.output = GPIO_OPENDRAIN;
+    gpio_init.output = GPIO_DRIVE_NORMAL;
     gpio_init.pull = GPIO_NO_PULL;
     gpio_pin_init(pin, gpio_init);
   }
diff --git a/src/driver/stm32/serial.c b/src/driver/stm32/serial.c
index 50905c22b..65167f1c2 100644
--- a/src/driver/stm32/serial.c
+++ b/src/driver/stm32/serial.c
@@ -87,7 +87,7 @@ void handle_usart_invert(serial_ports_t port, bool invert) {
   }
 
   // Inverter control line, set high
-  gpio_config_t gpio_init;
+  gpio_config_t gpio_init = gpio_config_default();
   gpio_init.mode = GPIO_OUTPUT;
   gpio_init.output = GPIO_PUSHPULL;
   gpio_init.pull = GPIO_NO_PULL;
diff --git a/src/driver/stm32/spi.c b/src/driver/stm32/spi.c
index 13d9782d5..9b475a773 100644
--- a/src/driver/stm32/spi.c
+++ b/src/driver/stm32/spi.c
@@ -169,7 +169,7 @@ void spi_reconfigure(spi_bus_device_t *bus) {
   if (config->mode != bus->mode) {
     config->mode = bus->mode;
 
-    gpio_config_t gpio_init;
+    gpio_config_t gpio_init = gpio_config_default();
     gpio_init.mode = GPIO_ALTERNATE;
     gpio_init.drive = GPIO_DRIVE_HIGH;
     gpio_init.output = GPIO_PUSHPULL;
diff --git a/src/io/buzzer.c b/src/io/buzzer.c
index d2e3f5bd4..1cfe7348d 100644
--- a/src/io/buzzer.c
+++ b/src/io/buzzer.c
@@ -36,7 +36,7 @@ void buzzer_init() {
     return;
   }
 
-  gpio_config_t gpio_init;
+  gpio_config_t gpio_init = gpio_config_default();
   gpio_init.mode = GPIO_OUTPUT;
   gpio_init.output = GPIO_PUSHPULL;
   gpio_init.pull = GPIO_NO_PULL;
diff --git a/src/rx/unified_dsm.c b/src/rx/unified_dsm.c
index 70414b123..ec4244815 100644
--- a/src/rx/unified_dsm.c
+++ b/src/rx/unified_dsm.c
@@ -160,7 +160,7 @@ void rx_spektrum_bind() {
   if (bind_storage.bind_saved == 0) {
     const gpio_pins_t spectrum_bind_pin = target.serial_ports[profile.serial.rx].rx;
 
-    gpio_config_t gpio_init;
+    gpio_config_t gpio_init = gpio_config_default();
     gpio_init.mode = GPIO_OUTPUT;
     gpio_init.output = GPIO_PUSHPULL;
     gpio_init.pull = GPIO_NO_PULL;