adding SPI support

libs/microbit/enums.d.ts

@@ -288,8 +288,6 @@ declare namespace led {
     //% block="none"
     PullNone = 2,
     }
-declare namespace pins {
-}
 
 
     declare enum SerialPin {

libs/microbit/pins.cpp

@@ -71,7 +71,6 @@ MicroBitPin *getPin(int id) {
 }
 
 
-//% color=351 weight=30
 namespace pins {
     #define PINOP(op) \
       MicroBitPin *pin = getPin((int)name); \
@@ -268,4 +267,23 @@ namespace pins {
     {
       uBit.i2c.write(address << 1, (char*)buf->payload, buf->length, repeat);
     }
+
+    SPI* spi = NULL;
+    SPI* allocSPI() {
+        if (spi == NULL)
+            spi = new SPI(MOSI, MISO, SCK);
+        return spi;
+    }
+
+    /**
+    * Write to the SPI slave and return the response
+    * @param value Data to be sent to the SPI slave
+    */
+    //% help=pins/spi-write weight=5
+    //% blockId=spi_write block="spi write %value"
+    int spiWrite(int value) {
+        auto p = allocSPI();
+        return p->write(value);
+    }
+    
 }

libs/microbit/pins.ts

@@ -30,7 +30,7 @@ namespace pins {
     /**
      * Write one number to a 7-bit I2C address.
      */
-    //% help=pins/i2c-write-number
+    //% help=pins/i2c-write-number blockGap=8
     //% blockId=i2c_writenumber block="i2c write number|at address %address|with value %value|of format %format=i2c_sizeof" weight=6
     export function i2cWriteNumber(address: number, value: number, format: NumberFormat): void {
         let buf = createBuffer(pins.sizeOf(format))

libs/microbit/shims.d.ts

@@ -448,10 +448,6 @@ declare namespace led {
     //% help=led/screenshot shim=led::screenshot
     function screenshot(): Image;
 }
-
-
-
-    //% color=351 weight=30
 declare namespace pins {
 
     /**
@@ -573,6 +569,14 @@ declare namespace pins {
      */
     //% repeat.defl=0 shim=pins::i2cWriteBuffer
     function i2cWriteBuffer(address: number, buf: Buffer, repeat?: boolean): void;
+
+    /**
+     * Write to the SPI slave and return the response
+     * @param value Data to be sent to the SPI slave
+     */
+    //% help=pins/spi-write weight=5
+    //% blockId=spi_write block="spi write %value" shim=pins::spiWrite
+    function spiWrite(value: number): number;
 }