diff --git a/libraries/AP_HAL_AVR/AnalogIn_ADC.cpp b/libraries/AP_HAL_AVR/AnalogIn_ADC.cpp
index c0c8fed21c..ecc90c329d 100644
--- a/libraries/AP_HAL_AVR/AnalogIn_ADC.cpp
+++ b/libraries/AP_HAL_AVR/AnalogIn_ADC.cpp
@@ -99,7 +99,7 @@ void ADCSource::set_pin(uint8_t pin) {
             if (dpin != -1) {
                 // enable as input without a pull-up. This gives the
                 // best results for our analog sensors
-                hal.gpio->pinMode(dpin, GPIO_INPUT);
+                hal.gpio->pinMode(dpin, HAL_GPIO_INPUT);
                 hal.gpio->write(dpin, 0);
             }
         }
@@ -153,7 +153,7 @@ float ADCSource::_read_average() {
 void ADCSource::setup_read() {
     if (_stop_pin != ANALOG_INPUT_NONE) {
         uint8_t digital_pin = hal.gpio->analogPinToDigitalPin(_stop_pin);
-        hal.gpio->pinMode(digital_pin, GPIO_OUTPUT);
+        hal.gpio->pinMode(digital_pin, HAL_GPIO_OUTPUT);
         hal.gpio->write(digital_pin, 1);
     }
     if (_settle_time_ms != 0) {
@@ -173,7 +173,7 @@ void ADCSource::setup_read() {
 void ADCSource::stop_read() {
     if (_stop_pin != ANALOG_INPUT_NONE) {
         uint8_t digital_pin = hal.gpio->analogPinToDigitalPin(_stop_pin);
-        hal.gpio->pinMode(digital_pin, GPIO_OUTPUT);
+        hal.gpio->pinMode(digital_pin, HAL_GPIO_OUTPUT);
         hal.gpio->write(digital_pin, 0);
     }
 }
diff --git a/libraries/AP_HAL_AVR/GPIO.cpp b/libraries/AP_HAL_AVR/GPIO.cpp
index 687d34a3af..393950d5fa 100644
--- a/libraries/AP_HAL_AVR/GPIO.cpp
+++ b/libraries/AP_HAL_AVR/GPIO.cpp
@@ -48,7 +48,7 @@ void AVRGPIO::pinMode(uint8_t pin, uint8_t mode) {
     // JWS: can I let the optimizer do this?
     reg = portModeRegister(port);
 
-    if (mode == GPIO_INPUT) {
+    if (mode == HAL_GPIO_INPUT) {
         uint8_t oldSREG = SREG;
                 cli();
         *reg &= ~bit;
@@ -119,7 +119,10 @@ bool AVRGPIO::attach_interrupt(
         uint8_t interrupt_num, AP_HAL::Proc proc, uint8_t mode) {
     /* Mode is to set the ISCn0 and ISCn1 bits.
      * These correspond to the GPIO_INTERRUPT_ defs in AP_HAL.h */
-    if (!((mode == 0)||(mode == 1)||(mode == 2)||(mode==3))) return false;
+    if (!((mode == HAL_GPIO_INTERRUPT_LOW)||
+          (mode == HAL_GPIO_INTERRUPT_HIGH)||
+          (mode == HAL_GPIO_INTERRUPT_FALLING)||
+          (mode == HAL_GPIO_INTERRUPT_RISING))) return false;
     if (interrupt_num == 6) {
 	uint8_t oldSREG = SREG;
 	cli();	
@@ -150,7 +153,7 @@ void AVRDigitalSource::mode(uint8_t output) {
     volatile uint8_t* reg;
     reg = portModeRegister(port);
 
-    if (output == GPIO_INPUT) {
+    if (output == HAL_GPIO_INPUT) {
         uint8_t oldSREG = SREG;
                 cli();
         *reg &= ~bit;
@@ -208,7 +211,7 @@ void AVRDigitalSource::toggle() {
 bool AVRGPIO::usb_connected(void)
 {
 #if HAL_GPIO_USB_MUX_PIN != -1
-    pinMode(HAL_GPIO_USB_MUX_PIN, GPIO_INPUT);
+    pinMode(HAL_GPIO_USB_MUX_PIN, HAL_GPIO_INPUT);
     return !read(HAL_GPIO_USB_MUX_PIN);
 #else
     return false;
diff --git a/libraries/AP_HAL_AVR/RCInput_APM1.cpp b/libraries/AP_HAL_AVR/RCInput_APM1.cpp
index 836330fcdc..e925506dd5 100644
--- a/libraries/AP_HAL_AVR/RCInput_APM1.cpp
+++ b/libraries/AP_HAL_AVR/RCInput_APM1.cpp
@@ -59,7 +59,7 @@ void APM1RCInput::init(void* _isrregistry) {
     /* initialize overrides */
     clear_overrides();
     /* Arduino pin 49 is ICP4 / PL0,  timer 4 input capture */
-    hal.gpio->pinMode(49, GPIO_INPUT);
+    hal.gpio->pinMode(49, HAL_GPIO_INPUT);
     /**
      * WGM: 1 1 1 1. Fast WPM, TOP is in OCR4A
      * COM all disabled
diff --git a/libraries/AP_HAL_AVR/RCInput_APM2.cpp b/libraries/AP_HAL_AVR/RCInput_APM2.cpp
index bb100894a4..2ede82cac3 100644
--- a/libraries/AP_HAL_AVR/RCInput_APM2.cpp
+++ b/libraries/AP_HAL_AVR/RCInput_APM2.cpp
@@ -59,7 +59,7 @@ void APM2RCInput::init(void* _isrregistry) {
     /* initialize overrides */
     clear_overrides();
     /* Arduino pin 48 is ICP5 / PL1,  timer 5 input capture */
-    hal.gpio->pinMode(48, GPIO_INPUT);
+    hal.gpio->pinMode(48, HAL_GPIO_INPUT);
     /**
      * WGM: 1 1 1 1. Fast WPM, TOP is in OCR5A
      * COM all disabled
diff --git a/libraries/AP_HAL_AVR/RCOutput_APM1.cpp b/libraries/AP_HAL_AVR/RCOutput_APM1.cpp
index 6cc182899a..ceaa3fe1e4 100644
--- a/libraries/AP_HAL_AVR/RCOutput_APM1.cpp
+++ b/libraries/AP_HAL_AVR/RCOutput_APM1.cpp
@@ -13,9 +13,9 @@ extern const AP_HAL::HAL& hal;
 /* No init argument required */
 void APM1RCOutput::init(void* machtnichts) {
     // --------------------- TIMER1: CH_3, CH_4, and CH_10 ---------------
-    hal.gpio->pinMode(11,GPIO_OUTPUT); // CH_10 (PB5/OC1A)
-    hal.gpio->pinMode(12,GPIO_OUTPUT); // CH_3 (PB6/OC1B)
-    hal.gpio->pinMode(13,GPIO_OUTPUT); // CH_4 (PB7/OC1C)
+    hal.gpio->pinMode(11,HAL_GPIO_OUTPUT); // CH_10 (PB5/OC1A)
+    hal.gpio->pinMode(12,HAL_GPIO_OUTPUT); // CH_3 (PB6/OC1B)
+    hal.gpio->pinMode(13,HAL_GPIO_OUTPUT); // CH_4 (PB7/OC1C)
 
     // WGM: 1 1 1 0. Clear Timer on Compare, TOP is ICR1.
     // CS11: prescale by 8 => 0.5us tick
@@ -27,9 +27,9 @@ void APM1RCOutput::init(void* machtnichts) {
     OCR1C = 0xFFFF;
     
     //--------------- TIMER3: CH_7, CH_8, and CH_11 ---------------------
-    hal.gpio->pinMode(5,GPIO_OUTPUT); // CH_11 (PE3/OC3A)
-    hal.gpio->pinMode(2,GPIO_OUTPUT); // CH_8 (PE4/OC3B)
-    hal.gpio->pinMode(3,GPIO_OUTPUT); // CH_7 (PE5/OC3C)
+    hal.gpio->pinMode(5,HAL_GPIO_OUTPUT); // CH_11 (PE3/OC3A)
+    hal.gpio->pinMode(2,HAL_GPIO_OUTPUT); // CH_8 (PE4/OC3B)
+    hal.gpio->pinMode(3,HAL_GPIO_OUTPUT); // CH_7 (PE5/OC3C)
 
     // WGM: 1 1 1 0. Clear timer on Compare, TOP is ICR3
     // CS31: prescale by 8 => 0.5us tick
@@ -43,14 +43,14 @@ void APM1RCOutput::init(void* machtnichts) {
     //--------------- TIMER4: CH_6 and CH_5  ----------------------------
     // NB TIMER4 is shared with PPM input from RCInput_APM1.cpp
     // The TIMER4 registers are assumed to be setup already.
-    hal.gpio->pinMode(7,GPIO_OUTPUT); // CH_5 (PH4/OC4B)
-    hal.gpio->pinMode(8,GPIO_OUTPUT); // CH_6 (PH5/OC4C)
+    hal.gpio->pinMode(7,HAL_GPIO_OUTPUT); // CH_5 (PH4/OC4B)
+    hal.gpio->pinMode(8,HAL_GPIO_OUTPUT); // CH_6 (PH5/OC4C)
 
 
     //--------------- TIMER5: CH_1, CH_2 and CH_9 -----------------------
-    hal.gpio->pinMode(46, GPIO_OUTPUT); // CH_9 (PL3/OC5A)
-    hal.gpio->pinMode(45, GPIO_OUTPUT); // CH_1 (PL4/OC5B)
-    hal.gpio->pinMode(44, GPIO_OUTPUT); // CH_2 (PL5/OC5C)
+    hal.gpio->pinMode(46, HAL_GPIO_OUTPUT); // CH_9 (PL3/OC5A)
+    hal.gpio->pinMode(45, HAL_GPIO_OUTPUT); // CH_1 (PL4/OC5B)
+    hal.gpio->pinMode(44, HAL_GPIO_OUTPUT); // CH_2 (PL5/OC5C)
     
     // WGM: 1 1 1 0. Clear timer on Compare, TOP is ICR5
     // CS51: prescale by 8 => 0.5us tick
diff --git a/libraries/AP_HAL_AVR/RCOutput_APM2.cpp b/libraries/AP_HAL_AVR/RCOutput_APM2.cpp
index 259c4bf336..fdf5106f25 100644
--- a/libraries/AP_HAL_AVR/RCOutput_APM2.cpp
+++ b/libraries/AP_HAL_AVR/RCOutput_APM2.cpp
@@ -13,8 +13,8 @@ extern const AP_HAL::HAL& hal;
 /* No init argument required */
 void APM2RCOutput::init(void* machtnichts) {
     // --------------------- TIMER1: CH_1 and CH_2 -----------------------
-    hal.gpio->pinMode(12,GPIO_OUTPUT); // CH_1 (PB6/OC1B)
-    hal.gpio->pinMode(11,GPIO_OUTPUT); // CH_2 (PB5/OC1A)
+    hal.gpio->pinMode(12,HAL_GPIO_OUTPUT); // CH_1 (PB6/OC1B)
+    hal.gpio->pinMode(11,HAL_GPIO_OUTPUT); // CH_2 (PB5/OC1A)
 
     // WGM: 1 1 1 0. Clear Timer on Compare, TOP is ICR1.
     // CS11: prescale by 8 => 0.5us tick
@@ -25,9 +25,9 @@ void APM2RCOutput::init(void* machtnichts) {
     OCR1B = 0xFFFF;
 
     // --------------- TIMER4: CH_3, CH_4, and CH_5 ---------------------
-    hal.gpio->pinMode(8,GPIO_OUTPUT); // CH_3 (PH5/OC4C)
-    hal.gpio->pinMode(7,GPIO_OUTPUT); // CH_4 (PH4/OC4B)
-    hal.gpio->pinMode(6,GPIO_OUTPUT); // CH_5 (PH3/OC4A)
+    hal.gpio->pinMode(8,HAL_GPIO_OUTPUT); // CH_3 (PH5/OC4C)
+    hal.gpio->pinMode(7,HAL_GPIO_OUTPUT); // CH_4 (PH4/OC4B)
+    hal.gpio->pinMode(6,HAL_GPIO_OUTPUT); // CH_5 (PH3/OC4A)
 
     // WGM: 1 1 1 0. Clear Timer on Compare, TOP is ICR4.
     // CS41: prescale by 8 => 0.5us tick
@@ -39,9 +39,9 @@ void APM2RCOutput::init(void* machtnichts) {
     ICR4 = 40000; // 0.5us tick => 50hz freq
 
     //--------------- TIMER3: CH_6, CH_7, and CH_8 ----------------------
-    hal.gpio->pinMode(3,GPIO_OUTPUT); // CH_6 (PE5/OC3C)
-    hal.gpio->pinMode(2,GPIO_OUTPUT); // CH_7 (PE4/OC3B)
-    hal.gpio->pinMode(5,GPIO_OUTPUT); // CH_8 (PE3/OC3A)
+    hal.gpio->pinMode(3,HAL_GPIO_OUTPUT); // CH_6 (PE5/OC3C)
+    hal.gpio->pinMode(2,HAL_GPIO_OUTPUT); // CH_7 (PE4/OC3B)
+    hal.gpio->pinMode(5,HAL_GPIO_OUTPUT); // CH_8 (PE3/OC3A)
 
     // WGM: 1 1 1 0. Clear timer on Compare, TOP is ICR3
     // CS31: prescale by 8 => 0.5us tick
@@ -55,8 +55,8 @@ void APM2RCOutput::init(void* machtnichts) {
     //--------------- TIMER5: CH_10, and CH_11 ---------------
     // NB TIMER5 is shared with PPM input from RCInput_APM2.cpp
     // The TIMER5 registers are assumed to be setup already.
-    hal.gpio->pinMode(45, GPIO_OUTPUT); // CH_10 (PL4/OC5B)
-    hal.gpio->pinMode(44, GPIO_OUTPUT); // CH_11 (PL5/OC5C)
+    hal.gpio->pinMode(45, HAL_GPIO_OUTPUT); // CH_10 (PL4/OC5B)
+    hal.gpio->pinMode(44, HAL_GPIO_OUTPUT); // CH_11 (PL5/OC5C)
 }
 
 /* Output freq (1/period) control */
diff --git a/libraries/AP_HAL_AVR/SPIDevice_SPI0.cpp b/libraries/AP_HAL_AVR/SPIDevice_SPI0.cpp
index 4cc2afcefe..22a3956c02 100644
--- a/libraries/AP_HAL_AVR/SPIDevice_SPI0.cpp
+++ b/libraries/AP_HAL_AVR/SPIDevice_SPI0.cpp
@@ -22,11 +22,11 @@ bool AVRSPI0DeviceDriver::_force_low_speed;
 static volatile bool spi0_transferflag = false;
 
 void AVRSPI0DeviceDriver::init() {
-    hal.gpio->pinMode(SPI0_MISO_PIN, GPIO_INPUT);
-    hal.gpio->pinMode(SPI0_MOSI_PIN, GPIO_OUTPUT);
-    hal.gpio->pinMode(SPI0_SCK_PIN, GPIO_OUTPUT);
+    hal.gpio->pinMode(SPI0_MISO_PIN, HAL_GPIO_INPUT);
+    hal.gpio->pinMode(SPI0_MOSI_PIN, HAL_GPIO_OUTPUT);
+    hal.gpio->pinMode(SPI0_SCK_PIN, HAL_GPIO_OUTPUT);
 
-    _cs_pin->mode(GPIO_OUTPUT);
+    _cs_pin->mode(HAL_GPIO_OUTPUT);
     _cs_pin->write(1);
 
     /* Enable the SPI0 peripheral as a master */
diff --git a/libraries/AP_HAL_AVR/SPIDevice_SPI2.cpp b/libraries/AP_HAL_AVR/SPIDevice_SPI2.cpp
index 1c6987bc30..4c4b5f78f1 100644
--- a/libraries/AP_HAL_AVR/SPIDevice_SPI2.cpp
+++ b/libraries/AP_HAL_AVR/SPIDevice_SPI2.cpp
@@ -17,13 +17,13 @@ AVRSemaphore AVRSPI2DeviceDriver::_semaphore;
 
 void AVRSPI2DeviceDriver::init() {
     AVRDigitalSource spi2_miso(_BV(0), PH);
-    spi2_miso.mode(GPIO_INPUT);
+    spi2_miso.mode(HAL_GPIO_INPUT);
 
     AVRDigitalSource spi2_mosi(_BV(1), PH);
-    spi2_mosi.mode(GPIO_OUTPUT);
+    spi2_mosi.mode(HAL_GPIO_OUTPUT);
 
     AVRDigitalSource spi2_sck(_BV(2), PH);
-    spi2_sck.mode(GPIO_OUTPUT);
+    spi2_sck.mode(HAL_GPIO_OUTPUT);
 
     /* UMSELn1 and UMSELn2: USART in SPI Master mode */
     UCSR2C = _BV(UMSEL21) | _BV(UMSEL20);
@@ -31,7 +31,7 @@ void AVRSPI2DeviceDriver::init() {
     UCSR2B = _BV(RXEN2) | _BV(TXEN2);
 
     /* Setup chip select pin */
-    _cs_pin->mode(GPIO_OUTPUT);
+    _cs_pin->mode(HAL_GPIO_OUTPUT);
     _cs_pin->write(1);
 }
 
diff --git a/libraries/AP_HAL_AVR/SPIDevice_SPI3.cpp b/libraries/AP_HAL_AVR/SPIDevice_SPI3.cpp
index 47b51a3c60..5ba5f2fd04 100644
--- a/libraries/AP_HAL_AVR/SPIDevice_SPI3.cpp
+++ b/libraries/AP_HAL_AVR/SPIDevice_SPI3.cpp
@@ -26,9 +26,9 @@ void AVRSPI3DeviceDriver::init() {
      * by the arduino pin numbers, so we access it directly
      * with AVRDigitalSource. */
     AVRDigitalSource spi3_sck(_BV(2), PJ);
-    spi3_sck.mode(GPIO_OUTPUT);
-    hal.gpio->pinMode(SPI3_MOSI, GPIO_OUTPUT);
-    hal.gpio->pinMode(SPI3_MISO, GPIO_INPUT);
+    spi3_sck.mode(HAL_GPIO_OUTPUT);
+    hal.gpio->pinMode(SPI3_MOSI, HAL_GPIO_OUTPUT);
+    hal.gpio->pinMode(SPI3_MISO, HAL_GPIO_INPUT);
 
     /* UMSELn1 and UMSELn2: USART in SPI Master mode */
     UCSR3C = _BV(UMSEL31) | _BV(UMSEL30);
@@ -36,7 +36,7 @@ void AVRSPI3DeviceDriver::init() {
     UCSR3B = _BV(RXEN3) | _BV(TXEN3);
 
     /* Setup chip select pin */
-    _cs_pin->mode(GPIO_OUTPUT);
+    _cs_pin->mode(HAL_GPIO_OUTPUT);
     _cs_pin->write(1);
 }
 
diff --git a/libraries/AP_HAL_AVR/examples/Blink/Blink.pde b/libraries/AP_HAL_AVR/examples/Blink/Blink.pde
index e8d6364dc3..05d8d90c58 100644
--- a/libraries/AP_HAL_AVR/examples/Blink/Blink.pde
+++ b/libraries/AP_HAL_AVR/examples/Blink/Blink.pde
@@ -34,16 +34,16 @@ void loop (void) {
 }
 
 void setup (void) {
-    hal.gpio->pinMode(13, GPIO_OUTPUT);
+    hal.gpio->pinMode(13, HAL_GPIO_OUTPUT);
     hal.gpio->write(13, 0);
 
     a_led = hal.gpio->channel(27);
     b_led = hal.gpio->channel(26);
     c_led = hal.gpio->channel(25);
 
-    a_led->mode(GPIO_OUTPUT);
-    b_led->mode(GPIO_OUTPUT);
-    c_led->mode(GPIO_OUTPUT);
+    a_led->mode(HAL_GPIO_OUTPUT);
+    b_led->mode(HAL_GPIO_OUTPUT);
+    c_led->mode(HAL_GPIO_OUTPUT);
 
     a_led->write(0);
     b_led->write(0);
diff --git a/libraries/AP_HAL_AVR/examples/LCDTest/LCDTest.pde b/libraries/AP_HAL_AVR/examples/LCDTest/LCDTest.pde
index c930d8290a..2a49e4bbe4 100644
--- a/libraries/AP_HAL_AVR/examples/LCDTest/LCDTest.pde
+++ b/libraries/AP_HAL_AVR/examples/LCDTest/LCDTest.pde
@@ -58,7 +58,7 @@ LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
 
 void setup() {
   /* pin 54 is A0 on the mega */
-  hal.gpio->pinMode(54, GPIO_INPUT);
+  hal.gpio->pinMode(54, HAL_GPIO_INPUT);
   // set up the LCD's number of columns and rows: 
   lcd.begin(16, 2);
   // Print a message to the LCD.
diff --git a/libraries/AP_HAL_AVR/examples/LCDTest/LCrystal.cpp b/libraries/AP_HAL_AVR/examples/LCDTest/LCrystal.cpp
index 0cb92834d6..00ea2c904d 100644
--- a/libraries/AP_HAL_AVR/examples/LCDTest/LCrystal.cpp
+++ b/libraries/AP_HAL_AVR/examples/LCDTest/LCrystal.cpp
@@ -70,12 +70,12 @@ void LiquidCrystal::init(uint8_t fourbitmode, uint8_t rs, uint8_t rw, uint8_t en
   _data_pins[6] = d6;
   _data_pins[7] = d7; 
 
-  hal.gpio->pinMode(_rs_pin, GPIO_OUTPUT);
+  hal.gpio->pinMode(_rs_pin, HAL_GPIO_OUTPUT);
   // we can save 1 pin by not using RW. Indicate by passing 255 instead of pin#
   if (_rw_pin != 255) { 
-    hal.gpio->pinMode(_rw_pin, GPIO_OUTPUT);
+    hal.gpio->pinMode(_rw_pin, HAL_GPIO_OUTPUT);
   }
-  hal.gpio->pinMode(_enable_pin, GPIO_OUTPUT);
+  hal.gpio->pinMode(_enable_pin, HAL_GPIO_OUTPUT);
   
   if (fourbitmode)
     _displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
@@ -296,7 +296,7 @@ void LiquidCrystal::pulseEnable(void) {
 
 void LiquidCrystal::write4bits(uint8_t value) {
   for (int i = 0; i < 4; i++) {
-    hal.gpio->pinMode(_data_pins[i], GPIO_OUTPUT);
+    hal.gpio->pinMode(_data_pins[i], HAL_GPIO_OUTPUT);
     hal.gpio->write(_data_pins[i], (value >> i) & 0x01);
   }
 
@@ -305,7 +305,7 @@ void LiquidCrystal::write4bits(uint8_t value) {
 
 void LiquidCrystal::write8bits(uint8_t value) {
   for (int i = 0; i < 8; i++) {
-    hal.gpio->pinMode(_data_pins[i], GPIO_OUTPUT);
+    hal.gpio->pinMode(_data_pins[i], HAL_GPIO_OUTPUT);
     hal.gpio->write(_data_pins[i], (value >> i) & 0x01);
   }
   
diff --git a/libraries/AP_HAL_AVR/examples/RCInputTest/RCInputTest.pde b/libraries/AP_HAL_AVR/examples/RCInputTest/RCInputTest.pde
index e6d86f3c5a..83bfb5d504 100644
--- a/libraries/AP_HAL_AVR/examples/RCInputTest/RCInputTest.pde
+++ b/libraries/AP_HAL_AVR/examples/RCInputTest/RCInputTest.pde
@@ -61,7 +61,7 @@ void loop (void) {
 
 void setup (void) {
     hal.console->printf_P(PSTR("reading rc in:"));
-    hal.gpio->pinMode(27, GPIO_OUTPUT);
+    hal.gpio->pinMode(27, HAL_GPIO_OUTPUT);
     hal.gpio->write(27, 0);
 }
 
diff --git a/libraries/AP_HAL_AVR/examples/RCPassthroughTest/RCPassthroughTest.pde b/libraries/AP_HAL_AVR/examples/RCPassthroughTest/RCPassthroughTest.pde
index 6b3093c9fd..08412c581b 100644
--- a/libraries/AP_HAL_AVR/examples/RCPassthroughTest/RCPassthroughTest.pde
+++ b/libraries/AP_HAL_AVR/examples/RCPassthroughTest/RCPassthroughTest.pde
@@ -81,7 +81,7 @@ void loop (void) {
 }
 
 void setup (void) {
-    hal.gpio->pinMode(27, GPIO_OUTPUT);
+    hal.gpio->pinMode(27, HAL_GPIO_OUTPUT);
     hal.gpio->write(27, 0);
     for (uint8_t i=0; i<16; i++) {
         hal.rcout->enable_ch(i);
diff --git a/libraries/AP_HAL_AVR/examples/Scheduler/Scheduler.pde b/libraries/AP_HAL_AVR/examples/Scheduler/Scheduler.pde
index 4948bb0ff0..f1169ba7cf 100644
--- a/libraries/AP_HAL_AVR/examples/Scheduler/Scheduler.pde
+++ b/libraries/AP_HAL_AVR/examples/Scheduler/Scheduler.pde
@@ -59,7 +59,7 @@ void schedule_toggle_hang(void *) {
 
 void setup_pin(int pin_num) {
     hal.console->printf_P(PSTR("Setup pin %d\r\n"), pin_num);
-    hal.gpio->pinMode(pin_num,GPIO_OUTPUT);
+    hal.gpio->pinMode(pin_num,HAL_GPIO_OUTPUT);
     /* Blink so we can see setup on the logic analyzer.*/
     hal.gpio->write(pin_num,1);
     hal.gpio->write(pin_num,0);
diff --git a/libraries/AP_HAL_AVR/examples/Semaphore/Semaphore.pde b/libraries/AP_HAL_AVR/examples/Semaphore/Semaphore.pde
index b83afab717..af1f4d0c3e 100644
--- a/libraries/AP_HAL_AVR/examples/Semaphore/Semaphore.pde
+++ b/libraries/AP_HAL_AVR/examples/Semaphore/Semaphore.pde
@@ -54,7 +54,7 @@ void blink_a3() {
 
 void setup_pin(int pin_num) {
     hal.console->printf_P(PSTR("Setup pin %d\r\n"), pin_num);
-    hal.gpio->pinMode(pin_num,GPIO_OUTPUT);
+    hal.gpio->pinMode(pin_num,HAL_GPIO_OUTPUT);
     /* Blink so we can see setup on the logic analyzer.*/
     hal.gpio->write(pin_num,1);
     hal.gpio->write(pin_num,0);