Alvaro Cassinelli / Mbed 2 deprecated laserUI

Laser Sensing Display for UI interfaces in the real world

Dependencies:   mbed

Fork of skinGames_forktest by Alvaro Cassinelli

hardwareIO/hardwareIO.h@0:345b3bc7a0ea, 2012-03-28 (annotated)

Committer:
mbedalvaro
Date:
Wed Mar 28 14:40:01 2012 +0000
Revision:
0:345b3bc7a0ea
Child:
10:6f8e48dca1bd
This version (using rigid frame, base and child classes, etc) works, but the blob is strangely smaller. Need to check this.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbedalvaro 0:345b3bc7a0ea 1
mbedalvaro 0:345b3bc7a0ea 2 #ifndef hardwareIO_h
mbedalvaro 0:345b3bc7a0ea 3 #define hardwareIO_h
mbedalvaro 0:345b3bc7a0ea 4
mbedalvaro 0:345b3bc7a0ea 5 #include "mbed.h"
mbedalvaro 0:345b3bc7a0ea 6 #include "lockin.h"
mbedalvaro 0:345b3bc7a0ea 7
mbedalvaro 0:345b3bc7a0ea 8
mbedalvaro 0:345b3bc7a0ea 9 // NOTE: the SPI library 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.
mbedalvaro 0:345b3bc7a0ea 10 #define SCK_PIN p7 //SPI Clock
mbedalvaro 0:345b3bc7a0ea 11 #define MISO_PIN p6 //SPI input (data comming from DAC, here not connected)
mbedalvaro 0:345b3bc7a0ea 12 #define MOSI_PIN p5 //SPI output (data going to DAC)
mbedalvaro 0:345b3bc7a0ea 13
mbedalvaro 0:345b3bc7a0ea 14 //**** CHIP SELECT pins for MP4922 DAC (mirrors and red laser)
mbedalvaro 0:345b3bc7a0ea 15 // 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).
mbedalvaro 0:345b3bc7a0ea 16 #define CS_DAC_MIRRORS p8 //Chip Select of the first DAC (mirrors)
mbedalvaro 0:345b3bc7a0ea 17
mbedalvaro 0:345b3bc7a0ea 18 //**** LASERS pins:
mbedalvaro 0:345b3bc7a0ea 19 #define LASER_RED_PIN p28
mbedalvaro 0:345b3bc7a0ea 20 #define LASER_GREEN_PIN p29
mbedalvaro 0:345b3bc7a0ea 21 #define LASER_BLUE_PIN p30
mbedalvaro 0:345b3bc7a0ea 22
mbedalvaro 0:345b3bc7a0ea 23 //**** MIRRORS:
mbedalvaro 0:345b3bc7a0ea 24 //The DAC is 12 bytes capable (Max=4096), but we will limit this a little.
mbedalvaro 0:345b3bc7a0ea 25 #define MAX_AD_MIRRORS 4095 // 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.
mbedalvaro 0:345b3bc7a0ea 26 #define MIN_AD_MIRRORS 0
mbedalvaro 0:345b3bc7a0ea 27 // We assume that the center of the mirror is at MAX_AD_MIRRORS/2 = 2000:
mbedalvaro 0:345b3bc7a0ea 28 #define CENTER_AD_MIRROR_X 2047 // This MUST BE the direction of the photodetector.
mbedalvaro 0:345b3bc7a0ea 29 #define CENTER_AD_MIRROR_Y 2047 // This MUST BE the direction of the photodetector.
mbedalvaro 0:345b3bc7a0ea 30
mbedalvaro 0:345b3bc7a0ea 31
mbedalvaro 0:345b3bc7a0ea 32 //**** Look-Up Table:
mbedalvaro 0:345b3bc7a0ea 33 #define uint16 unsigned short
mbedalvaro 0:345b3bc7a0ea 34 #define LUT_RESOLUTION 33 // resolution of the Look-Up Table (power of 2 +1)
mbedalvaro 0:345b3bc7a0ea 35 #define LUT_BITS_SHIFT 7 // bits shift from mirror DAC (12 bits) to LUT ( root_square(LUT_RESOLUTION - 1) )
mbedalvaro 0:345b3bc7a0ea 36 #define LUT_BITS_MASK 127 // bits mask to obtain the position remainder ( 2^LUT_BITS_SHIFT - 1 )
mbedalvaro 0:345b3bc7a0ea 37 // possible configurations:
mbedalvaro 0:345b3bc7a0ea 38 // LUT_RESOLUTION LUT_BITS_SHIFT LUT_BITS_MASK
mbedalvaro 0:345b3bc7a0ea 39 // 9 9 511
mbedalvaro 0:345b3bc7a0ea 40 // 17 8 255
mbedalvaro 0:345b3bc7a0ea 41 // 33 7 127
mbedalvaro 0:345b3bc7a0ea 42 // 65 6 63
mbedalvaro 0:345b3bc7a0ea 43 // ...
mbedalvaro 0:345b3bc7a0ea 44 #define LUT_FILENAME "/local/LUT.txt"
mbedalvaro 0:345b3bc7a0ea 45 //#define LUT_H_FILENAME "/local/LUT_pos.txt" //define if human readable file is required
mbedalvaro 0:345b3bc7a0ea 46
mbedalvaro 0:345b3bc7a0ea 47 //Methode of acquisition and correction
mbedalvaro 0:345b3bc7a0ea 48 #define lockin_read() lockin.getMedianValue()
mbedalvaro 0:345b3bc7a0ea 49 #define LUT_BILINEAR
mbedalvaro 0:345b3bc7a0ea 50
mbedalvaro 0:345b3bc7a0ea 51
mbedalvaro 0:345b3bc7a0ea 52 // **** REFERENCE SIGNAL:
mbedalvaro 0:345b3bc7a0ea 53 /*
mbedalvaro 0:345b3bc7a0ea 54 #define testPin_OC1A 11 // this is, output compare pin OC1A //connected to CK2 = lockIn clock
mbedalvaro 0:345b3bc7a0ea 55 #define testPin_OC1B 12 // this is, output compare pin OC1B //connected to CK1 = laser clock
mbedalvaro 0:345b3bc7a0ea 56 #define testPin_OC1C 13
mbedalvaro 0:345b3bc7a0ea 57 */
mbedalvaro 0:345b3bc7a0ea 58
mbedalvaro 0:345b3bc7a0ea 59 // ==================================================================================================================================================================
mbedalvaro 0:345b3bc7a0ea 60
mbedalvaro 0:345b3bc7a0ea 61 class HardwareIO {
mbedalvaro 0:345b3bc7a0ea 62 public:
mbedalvaro 0:345b3bc7a0ea 63
mbedalvaro 0:345b3bc7a0ea 64
mbedalvaro 0:345b3bc7a0ea 65 void init(void);
mbedalvaro 0:345b3bc7a0ea 66
mbedalvaro 0:345b3bc7a0ea 67 //Lock-in acquisition methods:
mbedalvaro 0:345b3bc7a0ea 68 float LockInRead_Volts();
mbedalvaro 0:345b3bc7a0ea 69 int LockInRead_AD();
mbedalvaro 0:345b3bc7a0ea 70 float LockInAD_to_Volts(int);
mbedalvaro 0:345b3bc7a0ea 71
mbedalvaro 0:345b3bc7a0ea 72 //Look-Up Table:
mbedalvaro 0:345b3bc7a0ea 73 uint16 lut[LUT_RESOLUTION][LUT_RESOLUTION]; //Look-Up Table
mbedalvaro 0:345b3bc7a0ea 74 void scanLUT(); //create and save the Look-Up Table
mbedalvaro 0:345b3bc7a0ea 75 void setLUT(); //set the Look-Up Table: either from scanning, or from the file LUT.TXT (if it is present)
mbedalvaro 0:345b3bc7a0ea 76 float lockInCorrectedValue(int x, int y); //return the lockin value corrected with the Look-UpTable
mbedalvaro 0:345b3bc7a0ea 77
mbedalvaro 0:345b3bc7a0ea 78 void scan_serial(int pointsPerLine = 400);
mbedalvaro 0:345b3bc7a0ea 79
mbedalvaro 0:345b3bc7a0ea 80 // SPI control for DAC for mirrors and red laser power (low level):
mbedalvaro 0:345b3bc7a0ea 81 void writeOutX(int value);
mbedalvaro 0:345b3bc7a0ea 82 void writeOutY(int value);
mbedalvaro 0:345b3bc7a0ea 83
mbedalvaro 0:345b3bc7a0ea 84 // mirror degree-to-AD units conversion factors:
mbedalvaro 0:345b3bc7a0ea 85 //float AD_to_Deg_MIRROR_X;//=1.0*(MAX_DEG_MIRROR_X-MIN_DEG_MIRROR_X)/(MAX_AD_MIRRORS-MIN_AD_MIRRORS);
mbedalvaro 0:345b3bc7a0ea 86 //float AD_to_Deg_MIRROR_Y;//=1.0*(MAX_DEG_MIRROR_Y-MIN_DEG_MIRROR_Y)/(MAX_AD_MIRRORS-MIN_AD_MIRRORS);
mbedalvaro 0:345b3bc7a0ea 87
mbedalvaro 0:345b3bc7a0ea 88 /*
mbedalvaro 0:345b3bc7a0ea 89 // Mirror position:
mbedalvaro 0:345b3bc7a0ea 90 void setMirrorX_Deg(float _Az);
mbedalvaro 0:345b3bc7a0ea 91 void setMirrorY_Deg(float _El);
mbedalvaro 0:345b3bc7a0ea 92 void setMirrorX_AD(int _AzAD);
mbedalvaro 0:345b3bc7a0ea 93 void setMirrorY_AD(int _ElAD);
mbedalvaro 0:345b3bc7a0ea 94 void setMirrorsXY_AD(int _xAD, int _yAD);
mbedalvaro 0:345b3bc7a0ea 95 void setMirrorsCenter();
mbedalvaro 0:345b3bc7a0ea 96 void getAnglesFromAD(float &Az, float &El, int _xAD, int _yAD);
mbedalvaro 0:345b3bc7a0ea 97 //void setZoneDelimiters(...) // this could be here, instead on the LivingSpot class
mbedalvaro 0:345b3bc7a0ea 98 */
mbedalvaro 0:345b3bc7a0ea 99
mbedalvaro 0:345b3bc7a0ea 100
mbedalvaro 0:345b3bc7a0ea 101 //Laser Power, for the moment laser are TTL but we can use int:
mbedalvaro 0:345b3bc7a0ea 102 //if powerValue > 0 ==> 'true'; else 'false'
mbedalvaro 0:345b3bc7a0ea 103 // Red laser:
mbedalvaro 0:345b3bc7a0ea 104 void setRedPower(int powerRed);
mbedalvaro 0:345b3bc7a0ea 105 // Green laser:
mbedalvaro 0:345b3bc7a0ea 106 void setGreenPower(int powerGreen);
mbedalvaro 0:345b3bc7a0ea 107 // Blue laser:
mbedalvaro 0:345b3bc7a0ea 108 void setBluePower(int powerBlue);
mbedalvaro 0:345b3bc7a0ea 109
mbedalvaro 0:345b3bc7a0ea 110 void setRGBPower(char color); // we will use the 3 LSB bits to set each color
mbedalvaro 0:345b3bc7a0ea 111
mbedalvaro 0:345b3bc7a0ea 112 //void setupPWM();
mbedalvaro 0:345b3bc7a0ea 113 /* IN ADVANCED HARDWARE:
mbedalvaro 0:345b3bc7a0ea 114 // init PWM for reference generation:
mbedalvaro 0:345b3bc7a0ea 115 void initPWM();
mbedalvaro 0:345b3bc7a0ea 116 // reference signal:
mbedalvaro 0:345b3bc7a0ea 117 void setRefFreq(int);
mbedalvaro 0:345b3bc7a0ea 118 void incRefFreq(int inc=1);
mbedalvaro 0:345b3bc7a0ea 119 void decRefFreq(int dec=1);
mbedalvaro 0:345b3bc7a0ea 120 */
mbedalvaro 0:345b3bc7a0ea 121
mbedalvaro 0:345b3bc7a0ea 122 //float refFreq; // could be private
mbedalvaro 0:345b3bc7a0ea 123
mbedalvaro 0:345b3bc7a0ea 124
mbedalvaro 0:345b3bc7a0ea 125 private:
mbedalvaro 0:345b3bc7a0ea 126
mbedalvaro 0:345b3bc7a0ea 127 };
mbedalvaro 0:345b3bc7a0ea 128
mbedalvaro 0:345b3bc7a0ea 129
mbedalvaro 0:345b3bc7a0ea 130 extern HardwareIO IO; // allows the object IO to be used in other .cpp files (IO is pre-instantiated in hardwareIO.cpp)
mbedalvaro 0:345b3bc7a0ea 131 // 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)
mbedalvaro 0:345b3bc7a0ea 132 extern Serial pc; // allows pc to be manipulated by other .cpp files, even if pc is defined in the hardwareIO.cpp
mbedalvaro 0:345b3bc7a0ea 133
mbedalvaro 0:345b3bc7a0ea 134
mbedalvaro 0:345b3bc7a0ea 135 #endif