From 140f3fed2458ab0712ee13a4d50f72dbb966052f Mon Sep 17 00:00:00 2001
From: soypat <graded.sp@gmail.com>
Date: Sat, 27 May 2023 14:44:16 -0300
Subject: [PATCH] make zero value useful for configuration

---
 examples/mpu6050/main.go |  6 ++----
 mpu6050/mpu6050.go       | 13 ++-----------
 mpu6050/registers.go     |  6 ++++--
 3 files changed, 8 insertions(+), 17 deletions(-)

diff --git a/examples/mpu6050/main.go b/examples/mpu6050/main.go
index b64fe3be6..a80c2aa27 100644
--- a/examples/mpu6050/main.go
+++ b/examples/mpu6050/main.go
@@ -13,10 +13,8 @@ func main() {
 
 	mpuDevice := mpu6050.New(machine.I2C0, mpu6050.DefaultAddress)
 
-	err := mpuDevice.Configure(mpu6050.Config{
-		AccelRange: mpu6050.ACCEL_RANGE_16,
-		GyroRange:  mpu6050.GYRO_RANGE_2000,
-	})
+	// Configure the device with default configuration.
+	err := mpuDevice.Configure(mpu6050.Config{})
 	if err != nil {
 		panic(err.Error())
 	}
diff --git a/mpu6050/mpu6050.go b/mpu6050/mpu6050.go
index b7f9d3698..df7fdde8c 100644
--- a/mpu6050/mpu6050.go
+++ b/mpu6050/mpu6050.go
@@ -167,7 +167,7 @@ func (p *Device) setRangeGyro(gyroRange RangeGyro) (err error) {
 		p.gRange = 500
 	case RangeGyro1000:
 		p.gRange = 1000
-	case RangeGyro2000:
+	case RangeGyro2000, rangeGyroDefault:
 		p.gRange = 2000
 	default:
 		return errInvalidRangeGyro
@@ -187,7 +187,7 @@ func (p *Device) setRangeAccel(accRange RangeAccel) (err error) {
 		p.aRange = 4
 	case RangeAccel8:
 		p.aRange = 8
-	case RangeAccel16:
+	case RangeAccel16, rangeGyroDefault:
 		p.aRange = 16
 	default:
 		return errInvalidRangeAccel
@@ -218,12 +218,3 @@ func b2u8(b bool) byte {
 	}
 	return 0
 }
-
-func DefaultConfig() Config {
-	return Config{
-		AccelRange:  RangeAccel16,
-		GyroRange:   RangeGyro2000,
-		sampleRatio: 0, // TODO add const values.
-		clkSel:      0,
-	}
-}
diff --git a/mpu6050/registers.go b/mpu6050/registers.go
index e06bf36b6..ca6c5e0ae 100644
--- a/mpu6050/registers.go
+++ b/mpu6050/registers.go
@@ -41,8 +41,9 @@ const (
 
 // Gyroscope ranges for Init configuration
 const (
+	rangeGyroDefault = iota
 	// 250°/s
-	RangeGyro250 RangeGyro = iota
+	RangeGyro250
 	// 500°/s
 	RangeGyro500
 	// 1000°/s
@@ -53,8 +54,9 @@ const (
 
 // Accelerometer ranges for Init configuration
 const (
+	rangeAccelDefault RangeAccel = iota
 	// 2g
-	RangeAccel2 RangeAccel = iota
+	RangeAccel2
 	// 4g
 	RangeAccel4
 	// 8g