ADNS6010.h

00001 /**************************
00002 This class referred to ADNS5020EN library
00003 http://mbed.org/users/IPAB/programs/ADNS5020EN/5zwdp
00004 **************************/
00005 
00006 #ifndef _ADNS6010_H_
00007 #define _ADNS6010_H_
00008 
00009 #define REGISTER_PRODUCTID 0x00
00010 #define REGISTER_REVISONID 0x01
00011 #define REGISTER_MOTION 0x02
00012 #define REGISTER_DELTAX 0x03
00013 #define REGISTER_DELTAY 0x04
00014 #define REGISTER_SQUAL  0x05
00015 #define REGISTER_CONFIGURATION_BITS  0x0a
00016 
00017 #define ADNS6010_PRODUCTID  0x1C
00018 #define ADNS6010_REVISIONID 0x20
00019 
00020 #define DELAY_TRAD    50
00021 #define DELAY_TRAD_MOT  75
00022 #define DELAY_RESET_PULSE 10
00023 
00024 #include"mbed.h"
00025 
00026  /** Interface to control a ADNS-6010 Avago mouse 
00027   * chip using a SPI and 3 DigitalOuts
00028   */
00029 class ADNS6010 {
00030 public:
00031    /** Create the mouse chip control interface. Returns Error if the connection is not established.
00032     *
00033     * @param mosi A SPI(mosi) pin, for the spi interface of the mouse chip (SDIO)
00034     * @param miso A SPI(miso) pin, for the spi interface of the mouse chip (SDIO)
00035     * @param sclk A SPI(sclk) pin, for the spi interface of the mouse chip (SCLK)
00036     * @param ncs A DigitalOut, set low for chip select
00037     * @param reset A DigitalOut, set high for chip reset
00038     * @param npd A DigitalOut, set high for chip powerdown
00039     */
00040     ADNS6010(PinName mosi, PinName miso, PinName sclk, PinName ncs, PinName reset,PinName npd);
00041     
00042    /** Read the deltaX and deltaY registers and assign to the input variable the counts for the previous read.
00043     * 
00044     * @param a_dx A pointer to an integer, to return the value of the deltaX register in reading counts
00045     * @param a_dy A pointer to an integer, to return the value of the deltaY register in reading counts
00046     */
00047     void read_deltas(int* a_dx, int* a_dy);
00048     
00049    /** Read the SQUAL registers
00050     * 
00051     * @return  SQUAL register value an integer
00052     */
00053     int read_squal();
00054     
00055    /** Change the resolution of the mouse chip.
00056     * 
00057     * @param cpi A int value  400 or 800 or 1600 or 2000 
00058     */      
00059     void changeCPI(int cpi);
00060     
00061    /** Set new operating frequency to the mouse chip.
00062     * 
00063     * @param freq A int value between 500000 and 2000000 for the SPI frequency(in MHz)
00064     */
00065     void set_freq(int freq);
00066     
00067    /** Chip Power Down.
00068     */
00069     void end();
00070     
00071    /** Chip Power Up.
00072     */
00073     void start();
00074     
00075 private:
00076     int cread(unsigned char cregister);
00077     void cwrite(unsigned char caddress, unsigned char cdata);
00078     int MChipMotion(int reading);
00079     void creset();
00080     
00081     SPI spi_;
00082     DigitalOut npd_;
00083     DigitalOut reset_;
00084     DigitalOut ncs_;
00085 };
00086 
00087 #endif