support for advanced SPI functions

docs/reference/pins.md

@@ -14,16 +14,35 @@ pins.onPulsed(DigitalPin.P0, PulseValue.High, () => {
 });
 pins.pulseDuration();
 pins.pulseIn(DigitalPin.P0, PulseValue.High);
-pins.servoWritePin(AnalogPin.P0, 180);
-pins.servoSetPulse(AnalogPin.P0, 1500);
-pins.i2cReadNumber(0, NumberFormat.Int8LE);
-pins.i2cWriteNumber(0, 0, NumberFormat.Int8LE);
-pins.spiWrite(0);
 pins.setPull(DigitalPin.P0, PinPullMode.PullDown);
 pins.analogPitch(0, 0);
 pins.analogSetPitchPin(AnalogPin.P0);
 ```
 
+### Servos
+
+```cards
+pins.servoWritePin(AnalogPin.P0, 180);
+pins.servoSetPulse(AnalogPin.P0, 1500);
+```
+
+### I2C
+
+```cards
+pins.i2cReadNumber(0, NumberFormat.Int8LE);
+pins.i2cWriteNumber(0, 0, NumberFormat.Int8LE);
+```
+
+### SPI
+
+```cards
+pins.spiWrite(0);
+pins.spiFrequency(1000000);
+pins.spiFormat(8,3);
+pins.spiPins(DigitalPin.P0, DigitalPin.P1, DigitalPin.P2);
+```
+
 ### See Also
 
-[digitalReadPin](/reference/pins/digital-read-pin), [digitalWritePin](/reference/pins/digital-write-pin), [analogReadPin](/reference/pins/analog-read-pin), [analogWritePin](/reference/pins/analog-write-pin), [analogSetPeriod](/reference/pins/analog-set-period), [map](/reference/pins/map), [onPulsed](/reference/pins/on-pulsed), [pulseDuration](/reference/pins/pulse-duration), [pulseIn](/reference/pins/pulse-in), [servoWritePin](/reference/pins/servo-write-pin), [servoSetPulse](/reference/pins/servo-set-pulse), [i2cReadNumber](/reference/pins/i2c-read-number), [i2cWriteNumber](/reference/pins/i2c-write-number), [setPull](/reference/pins/set-pull), [analogPitch](/reference/pins/analog-pitch), [analogSetPitchPin](/reference/pins/analog-set-pitch-pin), [spiWrite](/reference/pins/spi-write)
+[digitalReadPin](/reference/pins/digital-read-pin), [digitalWritePin](/reference/pins/digital-write-pin), [analogReadPin](/reference/pins/analog-read-pin), [analogWritePin](/reference/pins/analog-write-pin), [analogSetPeriod](/reference/pins/analog-set-period), [map](/reference/pins/map), [onPulsed](/reference/pins/on-pulsed), [pulseDuration](/reference/pins/pulse-duration), [pulseIn](/reference/pins/pulse-in), [servoWritePin](/reference/pins/servo-write-pin), [servoSetPulse](/reference/pins/servo-set-pulse), [i2cReadNumber](/reference/pins/i2c-read-number), [i2cWriteNumber](/reference/pins/i2c-write-number), [setPull](/reference/pins/set-pull), [analogPitch](/reference/pins/analog-pitch), [analogSetPitchPin](/reference/pins/analog-set-pitch-pin), [spiWrite](/reference/pins/spi-write),
+[spiPins](/reference/pins/spi-pins),[spiFormat](/reference/pins/spi-format),[spiFrequency](/reference/pins/spi-frequency)

docs/reference/pins/spi-format.md

@@ -0,0 +1,16 @@
+# SPI Format
+
+Sets the SPI format
+
+```sig
+pins.spiFormat(8, 3);
+```
+
+### Parameters
+
+* ``bits``, 
+* ``mode``,
+
+### See also
+
+[SPI](https://developer.mbed.org/handbook/SPI)

docs/reference/pins/spi-frequency.md

@@ -0,0 +1,19 @@
+# SPI Write
+
+Write to the SPI Slave and return the response.
+
+```sig
+pins.spiWrite(0);
+```
+
+### Parameters
+
+* ``value``: value	Data to be sent to the SPI slave
+
+### Returns
+
+* a [number](/types/number) Response from the SPI slave
+
+### See also
+
+[SPI](https://developer.mbed.org/handbook/SPI)

docs/reference/pins/spi-pins.md

@@ -0,0 +1,17 @@
+# SPI Pins
+
+Sets the SPI MOSI, MISO and SCK pins
+
+```sig
+pins.spiPins(DigitalPin.P0, DigitalPin.P1, DigitalPin.P2);
+```
+
+### Parameters
+
+* ``MOSI``, the ``MOSI`` pin
+* ``MISO``, the ``MISO`` pin
+* ``SCK``, the ``SCK`` pin
+
+### See also
+
+[SPI](https://developer.mbed.org/handbook/SPI)