Diff: Mouse.h

Revision:

0:eb8581df1f5e

Child:

1:11b4710b30c2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Mouse.h	Tue Mar 31 22:29:38 2015 +0000
@@ -0,0 +1,94 @@
+#ifndef MOUSE_H
+#define MOUSE_H
+ 
+#include "mbed.h"
+
+#define sensorConfig 0x00
+#define sensorStatus 0x01
+#define Delta_Y 0x02
+#define Delta_X 0x03
+
+DigitalInOut pinC(PTB23);
+DigitalInOut pinD(PTA2);
+
+class MOUSE {
+ 
+    protected:
+ 
+    public:
+
+//=====================================
+//====== Set of useful functions ======
+//=====================================
+
+    void init(){
+        pinC.output();
+        pinD.input();
+        reSync();
+        forceAwake(1); // LED on
+        wait_ms(100);
+    }
+
+    void reSync(){
+        pinC = 1; // ReSync (startup) mouse
+        wait_us(5);
+        pinC = 0;
+        wait_us(1);
+        pinC = 1; 
+        wait_us(1000);  // wait for OptiMouse serial transaction timer to time out:
+    }
+    
+    uint8_t readRegister(uint8_t address){ // Bitbang SPI read operation
+        int i = 7;
+        uint8_t r = 0;
+        pinD.output();   // Write the address of the register we want to read:
+        for (; i>=0; i--){
+            pinC = 0;
+            pinD = (address & (1 << i));
+            pinC = 1;
+        }
+        pinD.input();    // Switch data line from OUTPUT to INPUT
+        wait_us(100);   // Wait according to datasheet
+        for (i=7; i>=0; i--){     // Fetch the data!                          
+            pinC = 0;
+            pinC = 1;
+            r |= ((pinD.read()) << i);
+        }
+        wait_us(100);
+        return r;
+    }
+
+    void writeRegister(uint8_t address, uint8_t data){
+        int i = 7;  
+        address |= 0x80;// Set MSB high, to indicate write operation:
+        pinD.output();  // Write the address:
+        for (; i>=0; i--){
+            pinC = 0;
+            pinD = (address & (1 << i));
+            pinC = 1;
+        } 
+        for (i=7; i>=0; i--){ // Write the data:
+            pinC = 0;
+            pinD = (data & (1 << i));
+            pinC = 1;
+        }
+    }
+
+    void forceAwake(char value){
+        if (value>0) writeRegister(sensorConfig,0x01); 
+        else writeRegister(sensorConfig,0x00);
+    }
+
+    signed char getDx(void){
+        return (signed char) readRegister(Delta_X);
+    }
+
+    signed char getDy(void){
+        return (signed char) readRegister(Delta_Y);
+    }
+
+    signed char status(void){
+        return (signed char) readRegister(sensorStatus);
+    }
+};
+#endif
\ No newline at end of file