spi: Rename Port.DevParams to Connect (#149)

It better conveys the purpose of the function, which is to create a Conn over a
Port.

devices/apa102/apa102.go

@@ -294,7 +294,7 @@ func (d *Dev) Halt() error {
 // https://en.wikipedia.org/wiki/Flicker_fusion_threshold is a recommended
 // reading.
 func New(p spi.Port, numLights int, intensity uint8, temperature uint16) (*Dev, error) {
-	c, err := p.DevParams(20000000, spi.Mode3, 8)
+	c, err := p.Connect(20000000, spi.Mode3, 8)
 	if err != nil {
 		return nil, err
 	}

devices/apa102/apa102_test.go

@@ -340,9 +340,9 @@ func TestDevEmpty(t *testing.T) {
 	}
 }
 
-func TestDevParamsFail(t *testing.T) {
+func TestConnectFail(t *testing.T) {
 	if d, err := New(&configFail{}, 150, 255, 6500); d != nil || err == nil {
-		t.Fatal("DevParams() call have failed")
+		t.Fatal("Connect() call have failed")
 	}
 }
 
@@ -703,7 +703,7 @@ type configFail struct {
 	spitest.Record
 }
 
-func (c *configFail) DevParams(maxHz int64, mode spi.Mode, bits int) (spi.Conn, error) {
+func (c *configFail) Connect(maxHz int64, mode spi.Mode, bits int) (spi.Conn, error) {
 	return nil, errors.New("injected error")
 }
 

devices/bme280/bme280.go

@@ -175,7 +175,7 @@ func NewI2C(b i2c.Bus, opts *Opts) (*Dev, error) {
 // When using SPI, the CS line must be used.
 func NewSPI(p spi.Port, opts *Opts) (*Dev, error) {
 	// It works both in Mode0 and Mode3.
-	c, err := p.DevParams(10000000, spi.Mode3, 8)
+	c, err := p.Connect(10000000, spi.Mode3, 8)
 	if err != nil {
 		return nil, err
 	}

devices/bme280/bme280_test.go

@@ -105,7 +105,7 @@ func TestSPISense_success(t *testing.T) {
 
 func TestNewSPI_fail(t *testing.T) {
 	if d, err := NewSPI(&spiFail{}, nil); d != nil || err == nil {
-		t.Fatal("DevParams() have failed")
+		t.Fatal("Connect() have failed")
 	}
 }
 
@@ -545,6 +545,6 @@ type spiFail struct {
 	spitest.Playback
 }
 
-func (s *spiFail) DevParams(maxHz int64, mode spi.Mode, bits int) (spi.Conn, error) {
+func (s *spiFail) Connect(maxHz int64, mode spi.Mode, bits int) (spi.Conn, error) {
 	return nil, errors.New("failing")
 }

devices/lepton/lepton.go

@@ -84,7 +84,7 @@ type Dev struct {
 // New returns an initialized connection to the FLIR Lepton.
 //
 // The CS line is manually managed by using mode spi.NoCS when calling
-// DevParams(). In this case pass nil for the cs parameter. Some spidev drivers
+// Connect(). In this case pass nil for the cs parameter. Some spidev drivers
 // refuse spi.NoCS, they do not implement proper support to not trigger the CS
 // line so a manual CS (really, any GPIO pin) must be used instead.
 //
@@ -112,7 +112,7 @@ func New(p spi.Port, i i2c.Bus, cs gpio.PinOut) (*Dev, error) {
 	}
 	// TODO(maruel): Switch to 16 bits per word, so that big endian 16 bits word
 	// decoding is done by the SPI driver.
-	s, err := p.DevParams(20000000, mode, 8)
+	s, err := p.Connect(20000000, mode, 8)
 	if err != nil {
 		return nil, err
 	}

devices/lepton/lepton_test.go

@@ -144,11 +144,11 @@ func TestNew_fail_no_Pins(t *testing.T) {
 	}
 }
 
-func TestNew_DevParams(t *testing.T) {
+func TestNew_Connect(t *testing.T) {
 	i := i2ctest.Record{}
 	s := spiStream{err: errors.New("injected")}
 	if _, err := New(&s, &i, &gpiotest.Pin{N: "CS"}); err == nil {
-		t.Fatal("DevParams failed")
+		t.Fatal("Connect failed")
 	}
 }
 
@@ -370,7 +370,7 @@ type spiStream struct {
 	err    error
 }
 
-func (s *spiStream) DevParams(maxHz int64, mode spi.Mode, bits int) (spi.Conn, error) {
+func (s *spiStream) Connect(maxHz int64, mode spi.Mode, bits int) (spi.Conn, error) {
 	if maxHz != 20000000 {
 		s.t.Fatal(maxHz)
 	}

devices/ssd1306/ssd1306.go

@@ -133,7 +133,7 @@ func NewSPI(p spi.Port, dc gpio.PinOut, w, h int, rotated bool) (*Dev, error) {
 	} else if err := dc.Out(gpio.Low); err != nil {
 		return nil, err
 	}
-	c, err := p.DevParams(3300000, spi.Mode0, bits)
+	c, err := p.Connect(3300000, spi.Mode0, bits)
 	if err != nil {
 		return nil, err
 	}

devices/ssd1306/ssd1306_test.go

@@ -576,7 +576,7 @@ type configFail struct {
 	spitest.Record
 }
 
-func (c *configFail) DevParams(maxHz int64, mode spi.Mode, bits int) (spi.Conn, error) {
+func (c *configFail) Connect(maxHz int64, mode spi.Mode, bits int) (spi.Conn, error) {
 	return nil, errors.New("injected error")
 }
 

experimental/devices/bitbang/spi.go

@@ -67,8 +67,8 @@ func (s *SPI) LimitSpeed(maxHz int64) error {
 	return nil
 }
 
-// DevParams implements spi.Conn.
-func (s *SPI) DevParams(maxHz int64, mode spi.Mode, bits int) error {
+// Connect implements spi.Conn.
+func (s *SPI) Connect(maxHz int64, mode spi.Mode, bits int) error {
 	if maxHz < 0 {
 		return errors.New("bitbang-spi: invalid maxHz")
 	}