Clean up SPI library, add info

cores/rp2040/Print.h

@@ -0,0 +1 @@
+#include "api/Print.h"

libraries/SPI/SPI.h

@@ -29,20 +29,21 @@ class SPIClassRP2040 : public arduino::HardwareSPI {
 public:
     SPIClassRP2040(spi_inst_t *spi);
 
-    // Send or receive data in 8- or 16-bit chunks  Returns readback value
-    byte transfer(uint8_t data);
-    uint16_t transfer16(uint16_t data);
+    // Send or receive 8- or 16-bit data.  Returns read back value
+    byte transfer(uint8_t data) override;
+    uint16_t transfer16(uint16_t data) override;
+
     // Sends buffer in 8 bit chunks.  Overwrites buffer with read data
-    void transfer(void *buf, size_t count);
+    void transfer(void *buf, size_t count) override;
 
     // Call before/after every complete transaction
-    void beginTransaction(SPISettings settings);
-    void endTransaction(void);
+    void beginTransaction(SPISettings settings) override;
+    void endTransaction(void) override;
 
     // Call once to init/deinit SPI class, select pins, etc.
-    virtual void begin() { begin(false, D0); }
+    virtual void begin() override { begin(false, D0); }
     void begin(bool hwCS, pin_size_t spiRX);
-    void end();
+    void end() override;
 
     // Deprecated - do not use!
     void setBitOrder(BitOrder order) __attribute__((deprecated));
@@ -50,10 +51,10 @@ public:
     void setClockDivider(uint8_t uc_div) __attribute__((deprecated));
 
     // Unimplemented
-    virtual void usingInterrupt(int interruptNumber) { (void) interruptNumber; }
-    virtual void notUsingInterrupt(int interruptNumber) { (void) interruptNumber; }
-    virtual void attachInterrupt() { /* noop */ }
-    virtual void detachInterrupt() { /* noop */ }
+    virtual void usingInterrupt(int interruptNumber) override { (void) interruptNumber; }
+    virtual void notUsingInterrupt(int interruptNumber) override { (void) interruptNumber; }
+    virtual void attachInterrupt() override { /* noop */ }
+    virtual void detachInterrupt() override { /* noop */ }
 
 private:
     spi_cpol_t cpol();

libraries/SPI/keywords.txt

@@ -0,0 +1,36 @@
+#######################################
+# Syntax Coloring Map SPI
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+SPI	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+begin	KEYWORD2
+end	KEYWORD2
+transfer	KEYWORD2
+setBitOrder	KEYWORD2
+setDataMode	KEYWORD2
+setClockDivider	KEYWORD2
+
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+SPI_CLOCK_DIV4	LITERAL1
+SPI_CLOCK_DIV16	LITERAL1
+SPI_CLOCK_DIV64	LITERAL1
+SPI_CLOCK_DIV128	LITERAL1
+SPI_CLOCK_DIV2	LITERAL1
+SPI_CLOCK_DIV8	LITERAL1
+SPI_CLOCK_DIV32	LITERAL1
+SPI_CLOCK_DIV64	LITERAL1
+SPI_MODE0	LITERAL1
+SPI_MODE1	LITERAL1
+SPI_MODE2	LITERAL1
+SPI_MODE3	LITERAL1

libraries/SPI/library.properties

@@ -0,0 +1,10 @@
+name=SPI
+version=1.0
+author=Earle F. Philhower, III <earlephilhower@yahoo.com>
+maintainer=Earle F. Philhower, III <earlephilhower@yahoo.com>
+sentence=Enables the communication with devices that use the Serial Peripheral Interface (SPI) Bus.
+paragraph=
+category=Signal Input/Output
+url=http://arduino.cc/en/Reference/SPI
+architectures=rp2040
+dot_a_linkage=true