ledCube.cpp

00001 #include "mbed.h"
00002 #include "ledCube.h"
00003 #include "ledValues.h"
00004 #include "MCP23S17.h"
00005 
00006 // Set up the ledArray output pins
00007 ledCube::ledCube()
00008 {
00009     spi = new SPI(p11, p12, p13);
00010     char Opcode = 0x40; // Used to start the spi communication with the DIP
00011     chip = new MCP23S17(*spi, p20, Opcode);
00012 
00013     ledArray[0][0] = new DigitalOut(P000);
00014     ledArray[0][1] = new DigitalOut(P001);
00015     ledArray[0][2] = new DigitalOut(P002);
00016     ledArray[0][3] = new DigitalOut(P003);
00017     ledArray[0][4] = new DigitalOut(P004);
00018     ledArray[1][0] = new DigitalOut(P010);
00019     ledArray[1][1] = new DigitalOut(P011);
00020     ledArray[1][2] = new DigitalOut(P012);
00021     ledArray[1][3] = NULL;
00022     ledArray[1][4] = NULL;
00023     ledArray[2][0] = NULL;
00024     ledArray[2][1] = NULL;
00025     ledArray[2][2] = NULL;
00026     ledArray[2][3] = NULL;
00027     ledArray[2][4] = NULL;
00028     ledArray[3][0] = NULL;
00029     ledArray[3][1] = new DigitalOut(P031);
00030     ledArray[3][2] = new DigitalOut(P032);
00031     ledArray[3][3] = new DigitalOut(P033);
00032     ledArray[3][4] = new DigitalOut(P034);
00033     ledArray[4][0] = new DigitalOut(P040);
00034     ledArray[4][1] = new DigitalOut(P041);
00035     ledArray[4][2] = new DigitalOut(P042);
00036     ledArray[4][3] = new DigitalOut(P043);
00037     ledArray[4][4] = new DigitalOut(P044);
00038     spiCurrentlyLit = 0;
00039     //  Set all 8 Port A bits to output direction
00040     (*chip).direction(PORT_A, 0x00);
00041     //  Set all 8 Port B bits to output direction
00042     (*chip).direction(PORT_B, 0x00);
00043     lastLedLit = NULL;
00044     (*chip).write(PORT_A, spiCurrentlyLit);
00045 }
00046 // Light the LED at the specified row, column, layer coordinate
00047 void ledCube::turnOnLed(char row, char column, char layer)
00048 {
00049     if(ledArray[row][column] != NULL){
00050         *ledArray[row][column] = 1;
00051     }
00052     // This else handles cases where the LEDs are handled by the I/O extender
00053     else{
00054     //printf("before on-spiCurrentlyLit: %d turn on Row: %d Col: %d \n", spiCurrentlyLit, row, column);
00055         if( row == 1 && column == 3){
00056             spiCurrentlyLit |= 0x01;   
00057         }
00058         else if(row == 1 && column == 4){
00059             spiCurrentlyLit |= 0x02;
00060         }
00061         else if(row == 2 && column == 0){
00062             spiCurrentlyLit |= 0x04;
00063         }
00064         else if(row == 2 && column == 1){
00065             spiCurrentlyLit |= 0x08;
00066         }
00067         else if(row == 2 && column == 2){
00068             spiCurrentlyLit |= 0x10;
00069         }
00070         else if(row == 2 && column == 3){
00071             spiCurrentlyLit |= 0x20;
00072         }
00073         else if(row == 2 && column == 4){
00074             spiCurrentlyLit |= 0x40;
00075         }
00076         else if(row == 3 && column == 0){
00077             spiCurrentlyLit |= 0x80;
00078         }
00079         (*chip).write(PORT_A, spiCurrentlyLit);
00080     }
00081 }
00082 
00083 // Turns off the LED at the specified row and column
00084 void ledCube::turnOffLed(char row, char column, char layer)
00085 {
00086     if(ledArray[row][column] != NULL){
00087         *ledArray[row][column] = 0;
00088     }
00089     // This else handles cases where the LEDs are handled by the I/O extender
00090     else{
00091         //printf("before: off-spiCurrentlyLit: %d turn off Row: %d Col: %d \n", spiCurrentlyLit, row, column);
00092         if( row == 1 && column == 3){
00093             spiCurrentlyLit &= ~(0x01);   
00094         }
00095         else if(row == 1 && column == 4){
00096             spiCurrentlyLit &= ~(0x02);
00097         }
00098         else if(row == 2 && column == 0){
00099             spiCurrentlyLit &= ~(0x04);
00100         }
00101         else if(row == 2 && column == 1){
00102             spiCurrentlyLit &= ~(0x08);
00103         }
00104         else if(row == 2 && column == 2){
00105             spiCurrentlyLit &= ~(0x10);
00106         }
00107         else if(row == 2 && column == 3){
00108             spiCurrentlyLit &= ~(0x20);
00109         }
00110         else if(row == 2 && column == 4){
00111             spiCurrentlyLit &= ~(0x40);
00112         }
00113         else if(row == 3 && column == 0){
00114             spiCurrentlyLit &= ~(0x80);
00115         }
00116         (*chip).write(PORT_A, spiCurrentlyLit);
00117     }
00118 }
00119 
00120 // Blinks all the LEDs to indicate losing
00121 void ledCube::blink()
00122 {
00123     for(char i = 0; i < 5; i++) {
00124         for(char j = 0; j < 5; j++) {
00125             turnOnLed(i,j,0);
00126         }
00127     }
00128         wait(.3);
00129     for(char i = 0; i < 5; i++) {
00130         for(char j = 0; j < 5; j++) {
00131             turnOffLed(i,j,0);
00132         }
00133     }
00134     wait(.3);
00135 }