Diff: laserProjectorHardware/laserProjectorHardware.h

Revision:

3:3fe7d6b5cf24

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/laserProjectorHardware/laserProjectorHardware.h	Thu Oct 04 05:16:25 2012 +0000
@@ -0,0 +1,73 @@
+
+#ifndef hardwareIO_h
+#define hardwareIO_h
+
+#include "mbed.h"
+
+
+//SPI library (for ADC chip) uses the following pins, but we don't have to set them and inputs or outputs 
+// (this is done when the library is initialized, which is done by pre-instantiation:
+#define SCK_PIN   p7 //SPI Clock
+#define MISO_PIN  p6 //SPI input (data comming from DAC, here not connected) 
+#define MOSI_PIN  p5 //SPI output (data going to DAC)
+
+//**** CHIP SELECT pins for MP4922 DAC (mirrors and red laser)
+// VERY IMPORTANT: the chip select for the DACs should be different from the default SPI "SS" pin (Slave Select), which is 53 by default (and will be used by the Ethernet Shield). 
+#define CS_DAC_MIRRORS   p8 //Chip Select of the first DAC (mirrors)
+
+//**** LASERS pins:
+#define LASER_RED_PIN   p28 // NOT YET USED (TTL control). NOTE: this is NOT the locking sensing laser!
+#define LASER_GREEN_PIN p29 // USED (TTL control)
+#define LASER_BLUE_PIN  p30 // USED (TTL control)
+
+//**** MIRRORS: 
+//The DAC is 12 bytes capable (Max=4096), but we will limit this a little. 
+#define MAX_AD_MIRRORS 4095 // note: 4095 is the absolute maximum for the SPI voltage (5V). This is for checking hardware compliance, but max and min angles can be defined for X and Y in each LivingSpot instance.
+#define MIN_AD_MIRRORS 0  // note: 0 is 0 volts for the SPI voltage. 
+// We assume that the center of the mirror is at MAX_AD_MIRRORS/2 = 2000:
+#define CENTER_AD_MIRROR_X 2047 // This MUST BE the direction of the photodetector. 
+#define CENTER_AD_MIRROR_Y 2047 // This MUST BE the direction of the photodetector.
+
+
+extern  DigitalOut Laser_Red, Laser_Green, Laser_Blue;
+
+// ==================================================================================================================================================================
+
+class HardwareIO {
+public:
+
+
+    void init(void);
+
+    void showLimitsMirrors( int times );
+
+    // SPI control for DAC for mirrors and red laser power (low level): 
+    void writeOutX(unsigned short value);
+    void writeOutY(unsigned short value);
+    void writeOutXY(unsigned short valueX, unsigned short valueY) {writeOutX(valueX); writeOutY(valueY);};
+ 
+     
+    //Displaying lasers: 
+    // Again: for the moment laser are TTL but these could be analog. Now, it is just: powerValue > 0 ==> 'true'; else 'false'
+    // Red laser:
+    void setRedPower(int powerRed);
+    // Green laser: 
+    void setGreenPower(int powerGreen);
+    // Blue laser: 
+    void setBluePower(int powerBlue);
+    // Setting all colors at once: 
+    void setRGBPower(unsigned char color); // we will use the 3 LSB bits to set each color
+    
+
+    
+private:
+
+};
+
+
+extern HardwareIO IO; // allows the object IO to be used in other .cpp files (IO is pre-instantiated in hardwareIO.cpp)
+// NOTE: IO encapsulates many IO functions, but perhaps it is better not to have an IO object - just use each IO function separatedly (as with pc object for instance)
+extern Serial pc; // allows pc to be manipulated by other .cpp files, even if pc is defined in the hardwareIO.cpp
+
+
+#endif