travis: start using misspell

- Otherwise typos continuously creep in.
- Fix misspellings found.
- Only run the binary check on 1.7.6, no need to run it everywhere.

experimental/devices/ads1x15/ads1x15.go

@@ -436,7 +436,7 @@ func (p *analogPin) ReadContinuous() <-chan analog.Sample {
 			case <-t.C:
 				value, err := p.Read()
 				if err != nil {
-					// In continous mode, we'll ignore errors silently.
+					// In continuous mode, we'll ignore errors silently.
 					continue
 				}
 				reading <- value

experimental/devices/ads1x15/example_test.go

@@ -50,7 +50,7 @@ func Example() {
 
 	fmt.Println(reading)
 
-	// Read values continously from ADC.
+	// Read values continuously from ADC.
 	fmt.Println("Continuous reading")
 	c := pin.ReadContinuous()
 

experimental/devices/as7262/as7262.go

@@ -116,7 +116,7 @@ func (b Band) String() string {
 //
 // Led Drive Current
 //
-// The AS7262 provides a current limated intergated led drive circuit. Valid
+// The AS7262 provides a current-limited integrated led drive circuit. Valid
 // limits for the drive current are 0mA, 12.5mA, 25mA, 50mA and 100mA. If non
 // valid values are given the next lowest valid value is used.
 //
@@ -415,7 +415,7 @@ const (
 
 // The as7262 registers are implemented as virtual registers pollStatus
 // provides a way to repeatedly check if there are any pending reads or writes
-// in the relevent buffer before a transaction while with a timeout.
+// in the relevant buffer before a transaction while with a timeout.
 // Direction is used to set which buffer is being polled to be ready.
 func (d *Dev) pollStatus(ctx context.Context, dir direction) error {
 	timeout := time.NewTimer(sensorTimeout)
@@ -517,10 +517,10 @@ const (
 	// Bank 2 consists of data from the G, Y, O, R photodiodes.
 	bank2 mode = 0x04
 	// AllContinuously gets data from both banks continuously, requires 2x
-	// the intergration time.
+	// the integration time.
 	allContinuously mode = 0x08
 	// AllOneShot gets data from both banks once, and set the data ready bit in
-	// the status control register when complete requires 2x the intergration
+	// the status control register when complete requires 2x the integration
 	// time.
 	allOneShot mode = 0x0c
 )

experimental/devices/as7262/as7262_test.go

@@ -792,7 +792,7 @@ func TestNew(t *testing.T) {
 		want2   gpio.PinIn
 		wantErr bool
 	}{
-		{name: "defautls",
+		{name: "defaults",
 			opts:    DefaultOpts,
 			want1:   G1x,
 			want2:   nil,

experimental/devices/as7262/testdata_test.go

@@ -200,7 +200,7 @@ var sensorTestCaseValidRead = []i2ctest.IO{
 	{Addr: 0x49, W: []byte{statusReg}, R: []byte{0x00}},
 }
 
-// Same as sensorTestCaseValidRead but omiting polling for data ready.
+// Same as sensorTestCaseValidRead but omitting polling for data ready.
 var sensorTestCaseInteruptValidRead = []i2ctest.IO{
 	{Addr: 0x49, W: []byte{statusReg}, R: []byte{0x00}},
 	{Addr: 0x49, W: []byte{writeReg, 0x85}, R: []byte{}},

experimental/devices/ccs811/ccs811.go

@@ -240,8 +240,9 @@ func (d *Dev) SetEnvironmentData(temp, humidity float32) error {
 	return nil
 }
 
-// GetBaseline provides current baseline used by internal measurement alogrithm.
-// For better understanding how to use this value, check the SetBaseline and documentation.
+// GetBaseline provides current baseline used by internal measurement algorithm.
+// For better understanding how to use this value, check the SetBaseline and
+// documentation.
 func (d *Dev) GetBaseline() ([]byte, error) {
 	r := make([]byte, 2)
 	if err := d.c.Tx([]byte{baselineReg}, r); err != nil {
@@ -330,7 +331,7 @@ func (d *Dev) Sense(values *SensorValues) error {
 	return d.SensePartial(ReadAll, values)
 }
 
-// SensePartial provides marginaly more efficient reading from the sensor.
+// SensePartial provides marginally more efficient reading from the sensor.
 // You can specify what subset of data you want through NeededData constants.
 func (d *Dev) SensePartial(requested NeededData, values *SensorValues) error {
 	read := make([]byte, requested)

experimental/devices/mpu9250/mpu9250.go

@@ -1428,7 +1428,7 @@ func (m *MPU9250) GetClockSource() (byte, error) {
 	return m.transport.readMaskedReg(reg.MPU9250_PWR_MGMT_1, reg.MPU9250_CLKSEL_MASK)
 }
 
-// GetDeviceID Returns the devide ID
+// GetDeviceID Returns the device ID
 func (m *MPU9250) GetDeviceID() (byte, error) {
 	return m.transport.readByte(reg.MPU9250_WHO_AM_I)
 }

experimental/devices/mpu9250/reg/reg.go

@@ -115,7 +115,7 @@ const (
 
 	//reset values
 	WHOAMI_RESET_VAL             = 0x71
-	POWER_MANAGMENT_1_RESET_VAL = 0x01
+	POWER_MANAGEMENT_1_RESET_VAL = 0x01
 	DEFAULT_RESET_VALUE          = 0x00
 
 	WHOAMI_DEFAULT_VAL = 0x68

experimental/devices/pca9548/pca9548_test.go

@@ -116,7 +116,7 @@ func TestRegisterPorts(t *testing.T) {
 			t.Fatalf("failed to create I²C mux: %v", err)
 		}
 		if _, err := mux.RegisterPorts(tt.alias); err == nil {
-			t.Fatal("expected second registraion to fail", err)
+			t.Fatal("expected second registration to fail", err)
 		}
 		for i, port := range tt.expect {
 			if err := i2creg.Unregister(port); err != nil {

experimental/devices/pca9685/servo.go

@@ -26,7 +26,7 @@ type Servo struct {
 	maxAngle physic.Angle
 }
 
-// NewServoGroup returns a servo group connected throught the pca9685 module
+// NewServoGroup returns a servo group connected through the pca9685 module
 // some pwm and angle limits can be set
 func NewServoGroup(dev *Dev, minPwm, maxPwm gpio.Duty, minAngle, maxAngle physic.Angle) *ServoGroup {
 	return &ServoGroup{

experimental/devices/sn3218/sn3218.go

@@ -72,7 +72,7 @@ func (d *Dev) Switch(channel int, state bool) error {
 	return d.updateStates()
 }
 
-// SwitchAll switches all channels accoring to the state (on/off).
+// SwitchAll switches all channels according to the state (on/off).
 func (d *Dev) SwitchAll(state bool) error {
 	for i := 0; i < 18; i++ {
 		d.on[i] = state