diff --git a/src/machine/machine_esp32c3.go b/src/machine/machine_esp32c3.go
index b57898b8..44c273df 100644
--- a/src/machine/machine_esp32c3.go
+++ b/src/machine/machine_esp32c3.go
@@ -59,12 +59,9 @@ type PinChange uint8
 
 // Pin change interrupt constants for SetInterrupt.
 const (
-	PinNoInterrupt PinChange = iota
-	PinRising
+	PinRising PinChange = iota + 1
 	PinFalling
 	PinToggle
-	PinLowLevel
-	PinHighLevel
 )
 
 // Configure this pin with the given configuration.
@@ -190,7 +187,7 @@ func (p Pin) SetInterrupt(change PinChange, callback func(Pin)) (err error) {
 		return ErrInvalidInputPin
 	}
 
-	if callback == nil || change == PinNoInterrupt {
+	if callback == nil {
 		// Disable this pin interrupt
 		p.pin().ClearBits(esp.GPIO_PIN_PIN_INT_TYPE_Msk | esp.GPIO_PIN_PIN_INT_ENA_Msk)
 
diff --git a/src/machine/machine_mimxrt1062.go b/src/machine/machine_mimxrt1062.go
index acac9501..5fd3199f 100644
--- a/src/machine/machine_mimxrt1062.go
+++ b/src/machine/machine_mimxrt1062.go
@@ -54,9 +54,7 @@ const (
 type PinChange uint8
 
 const (
-	PinLow PinChange = iota
-	PinHigh
-	PinRising
+	PinRising PinChange = iota + 2
 	PinFalling
 	PinToggle
 )
@@ -393,7 +391,7 @@ func (p Pin) SetInterrupt(change PinChange, callback func(Pin)) error {
 	mask := p.getMask()
 	if nil != callback {
 		switch change {
-		case PinLow, PinHigh, PinRising, PinFalling:
+		case PinRising, PinFalling:
 			gpio.EDGE_SEL.ClearBits(mask)
 			var reg *volatile.Register32
 			var pos uint8
diff --git a/src/machine/machine_rp2040_gpio.go b/src/machine/machine_rp2040_gpio.go
index b19014b9..e60f2c3a 100644
--- a/src/machine/machine_rp2040_gpio.go
+++ b/src/machine/machine_rp2040_gpio.go
@@ -226,12 +226,8 @@ type PinChange uint8
 
 // Pin change interrupt constants for SetInterrupt.
 const (
-	// PinLevelLow triggers whenever pin is at a low (around 0V) logic level.
-	PinLevelLow PinChange = 1 << iota
-	// PinLevelLow triggers whenever pin is at a high (around 3V) logic level.
-	PinLevelHigh
 	// Edge falling
-	PinFalling
+	PinFalling PinChange = 4 << iota
 	// Edge rising
 	PinRising
 )