Diff: SPI3.h

Revision:

5:62573be585e9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SPI3.h	Thu Jan 22 18:32:40 2009 +0000
@@ -0,0 +1,100 @@
+/* mbed Microcontroller Library - SPI3
+ * Copyright (c) 2007-2009, sford
+ */
+ 
+#ifndef MBED_SPI3_H
+#define MBED_SPI3_H
+
+#include "Base.h"
+#include "LPC2300.h"
+
+namespace mbed {
+
+/* Class: SPI3
+ *  A SPI Master, used for communicating with 3-wire SPI slave devices 
+ *
+ *  3-wire SPI devices use the same line for input an output, and should be connected to both
+ *  the mosi and miso pins on the mbed Microcontroller
+ */ 
+
+class SPI3 : public Base {
+
+public:
+	
+	/* Constructor: SPI3
+	 *  Create a 3-wire SPI master connected to the specified pins
+	 *
+	 * Variables:
+	 *  mosi - SPI Master Out, Slave In pin
+	 *  miso - SPI Master In, Slave Out pin
+	 *  sclk - SPI Clock pin
+     *
+	 * Pin Options:
+	 *  (5, 6, 7) or (11, 12, 13)
+	 */
+	SPI3(int mosi, int miso, int sclk, const char *name=NULL);
+	
+	/* Function: format
+	 *  Configure the data transmission format
+	 *
+	 * Variables:
+	 *  bits - Number of bits per SPI frame (4 - 16, default = 8)
+	 *  mode - Clock polarity and phase mode (0 - 3, default = 0)
+     *
+ 	 * > mode | POL PHA 
+     * > -----+--------	 
+     * >   0  |  0   0 
+	 * >   1  |  0   1
+     * >   2  |  1   0 
+	 * >   3  |  1   1
+	 */
+	void format(int bits = 8, int mode = 0);
+
+	// old one...
+	void format(int bits = 8, int polarity = 0, int phase = 0);
+	
+	/* Function: frequency
+	 *  Set the bus clock frequency
+	 *
+	 * Variables:
+	 *  hz - SCLK frequency in hz (default = 1MHz)
+	 */
+	void frequency(int hz = 1000000);
+			
+	/* Function: write
+	 *  Set the direction to output and write to the SPI Slave
+	 *
+     * Variables:
+     *  value - Data to be sent to the SPI slave
+	 */
+  	void write(int value);
+
+	/* Function: read
+ 	 *  Set the direction to input, read from the SPI Slave
+	 *
+     * Variables:
+     *  returns - Response from the SPI slave
+	 */
+	int read();
+	
+    virtual const struct rpc_method *get_rpc_methods();
+    static struct rpc_class *get_rpc_class();
+
+protected:
+
+	void configure();
+	
+	int _id;
+
+	int _uid;
+	static int _uidcounter;
+		
+	int _bits, _polarity, _phase, _hz;
+	static int _config[2];	
+ 	const LPC2300::PortMap*  mosi_portmap; 
+};
+
+}
+
+#endif
+