tim003 tim003 / Mbed 2 deprecated LukaIElmir

Luka Elmir

Dependencies:   mbed

main.cpp@0:63f93da46011, 2014-05-19 (annotated)

Committer:
tim003
Date:
Mon May 19 18:06:27 2014 +0000
Revision:
0:63f93da46011
Child:
1:8186a841911c
Projekt_priprema_G4_8x8

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tim003 0:63f93da46011 1 #include "mbed.h"
tim003 0:63f93da46011 2 #include "LEDMatrix.h"
tim003 0:63f93da46011 3
tim003 0:63f93da46011 4 //DigitalOut myled(LED1);
tim003 0:63f93da46011 5 AnalogIn pot(dp9);
tim003 0:63f93da46011 6 Serial pc(USBTX, USBRX);
tim003 0:63f93da46011 7
tim003 0:63f93da46011 8 Ticker t;
tim003 0:63f93da46011 9
tim003 0:63f93da46011 10
tim003 0:63f93da46011 11
tim003 0:63f93da46011 12 // p5: DIN, p7: CLK, p8: LOAD/CS
tim003 0:63f93da46011 13 SPI max72_spi(dp2, dp1, dp6);
tim003 0:63f93da46011 14 DigitalOut load(dp24); //Chip_Select
tim003 0:63f93da46011 15
tim003 0:63f93da46011 16 int maxInUse = 1; //change this variable to set how many MAX7219's you'll use
tim003 0:63f93da46011 17
tim003 0:63f93da46011 18 // define max7219 registers
tim003 0:63f93da46011 19 #define max7219_reg_noop 0x00
tim003 0:63f93da46011 20 #define max7219_reg_digit0 0x01
tim003 0:63f93da46011 21 #define max7219_reg_digit1 0x02
tim003 0:63f93da46011 22 #define max7219_reg_digit2 0x03
tim003 0:63f93da46011 23 #define max7219_reg_digit3 0x04
tim003 0:63f93da46011 24 #define max7219_reg_digit4 0x05
tim003 0:63f93da46011 25 #define max7219_reg_digit5 0x06
tim003 0:63f93da46011 26 #define max7219_reg_digit6 0x07
tim003 0:63f93da46011 27 #define max7219_reg_digit7 0x08
tim003 0:63f93da46011 28 #define max7219_reg_decodeMode 0x09
tim003 0:63f93da46011 29 #define max7219_reg_intensity 0x0a
tim003 0:63f93da46011 30 #define max7219_reg_scanLimit 0x0b
tim003 0:63f93da46011 31 #define max7219_reg_shutdown 0x0c
tim003 0:63f93da46011 32 #define max7219_reg_displayTest 0x0f
tim003 0:63f93da46011 33
tim003 0:63f93da46011 34 #define LOW 0
tim003 0:63f93da46011 35 #define HIGH 1
tim003 0:63f93da46011 36 #define MHZ 1000000
tim003 0:63f93da46011 37
tim003 0:63f93da46011 38 void maxSingle( int reg, int col) {
tim003 0:63f93da46011 39 //maxSingle is the "easy" function to use for a
tim003 0:63f93da46011 40 //single max7219
tim003 0:63f93da46011 41 load = LOW; // begin
tim003 0:63f93da46011 42 max72_spi.write(reg); // specify register
tim003 0:63f93da46011 43 max72_spi.write(col); // put data
tim003 0:63f93da46011 44 load = HIGH; // make sure data is loaded (on rising edge of LOAD/CS)
tim003 0:63f93da46011 45 }
tim003 0:63f93da46011 46
tim003 0:63f93da46011 47 void maxAll (int reg, int col) { // initialize all MAX7219's in the system
tim003 0:63f93da46011 48 load = LOW; // begin
tim003 0:63f93da46011 49 for ( int c=1; c<= maxInUse; c++) {
tim003 0:63f93da46011 50 max72_spi.write(reg); // specify register
tim003 0:63f93da46011 51 max72_spi.write(col); // put data
tim003 0:63f93da46011 52 }
tim003 0:63f93da46011 53 load = HIGH;
tim003 0:63f93da46011 54 }
tim003 0:63f93da46011 55
tim003 0:63f93da46011 56 void maxOne(int maxNr, int reg, int col) {
tim003 0:63f93da46011 57 //maxOne is for adressing different MAX7219's,
tim003 0:63f93da46011 58 //while having a couple of them cascaded
tim003 0:63f93da46011 59 int c = 0;
tim003 0:63f93da46011 60 load = LOW;
tim003 0:63f93da46011 61
tim003 0:63f93da46011 62 for ( c = maxInUse; c > maxNr; c--) {
tim003 0:63f93da46011 63 max72_spi.write(0); // no-op
tim003 0:63f93da46011 64 max72_spi.write(0); // no-op
tim003 0:63f93da46011 65 }
tim003 0:63f93da46011 66
tim003 0:63f93da46011 67 max72_spi.write(reg); // specify register
tim003 0:63f93da46011 68 max72_spi.write(col); // put data
tim003 0:63f93da46011 69
tim003 0:63f93da46011 70 for ( c=maxNr-1; c >= 1; c--) {
tim003 0:63f93da46011 71 max72_spi.write(0); // no-op
tim003 0:63f93da46011 72 max72_spi.write(0); // no-op
tim003 0:63f93da46011 73 }
tim003 0:63f93da46011 74 load = HIGH;
tim003 0:63f93da46011 75 }
tim003 0:63f93da46011 76
tim003 0:63f93da46011 77
tim003 0:63f93da46011 78 void setup () {
tim003 0:63f93da46011 79 // initiation of the max 7219
tim003 0:63f93da46011 80 // SPI setup: 8 bits, mode 0
tim003 0:63f93da46011 81 max72_spi.format(8, 0);
tim003 0:63f93da46011 82
tim003 0:63f93da46011 83 // going by the datasheet, min clk is 100ns so theoretically 10MHz should work...
tim003 0:63f93da46011 84 // max72_spi.frequency(10*MHZ);
tim003 0:63f93da46011 85
tim003 0:63f93da46011 86 maxAll(max7219_reg_scanLimit, 0x07);
tim003 0:63f93da46011 87 maxAll(max7219_reg_decodeMode, 0x00); // using an led matrix (not digits)
tim003 0:63f93da46011 88 maxAll(max7219_reg_shutdown, 0x01); // not in shutdown mode
tim003 0:63f93da46011 89 maxAll(max7219_reg_displayTest, 0x00); // no display test
tim003 0:63f93da46011 90 for (int e=1; e<=8; e++) { // empty registers, turn all LEDs off
tim003 0:63f93da46011 91 maxAll(e,0);
tim003 0:63f93da46011 92 }
tim003 0:63f93da46011 93 maxAll(max7219_reg_intensity, 0x0f & 0x0f); // the first 0x0f is the value you can set
tim003 0:63f93da46011 94 // range: 0x00 to 0x0f
tim003 0:63f93da46011 95 }
tim003 0:63f93da46011 96
tim003 0:63f93da46011 97 void loop () {
tim003 0:63f93da46011 98
tim003 0:63f93da46011 99
tim003 0:63f93da46011 100 //if you use just one MAX7219 it should look like this
tim003 0:63f93da46011 101 maxSingle(1,0x1f); // + - - - - - - -
tim003 0:63f93da46011 102 maxSingle(2,0x15); // - + - - - - - -,,,,,,,,
tim003 0:63f93da46011 103 maxSingle(3,0x15); // - - + - - - - -
tim003 0:63f93da46011 104 maxSingle(4,0x11); // - - - + - - - -
tim003 0:63f93da46011 105 maxSingle(5,0xf0); // - - - - + - - -
tim003 0:63f93da46011 106 maxSingle(6,0x80); // - - - - - + - -
tim003 0:63f93da46011 107 maxSingle(7,0x80); // - - - - - - + -
tim003 0:63f93da46011 108 maxSingle(8,0x80); // - - - - - - - +
tim003 0:63f93da46011 109
tim003 0:63f93da46011 110 max72_spi.write(max7219_reg_intensity);
tim003 0:63f93da46011 111 max72_spi.write(0x07);
tim003 0:63f93da46011 112 //if you use more than one MAX7219, it should look like this
tim003 0:63f93da46011 113
tim003 0:63f93da46011 114 /*
tim003 0:63f93da46011 115 maxAll(1,1); // + - - - - - - -
tim003 0:63f93da46011 116 maxAll(2,3); // + + - - - - - -
tim003 0:63f93da46011 117 maxAll(3,7); // + + + - - - - -
tim003 0:63f93da46011 118 maxAll(4,15); // + + + + - - - -
tim003 0:63f93da46011 119 maxAll(5,31); // + + + + + - - -
tim003 0:63f93da46011 120 maxAll(6,63); // + + + + + + - -
tim003 0:63f93da46011 121 maxAll(7,127); // + + + + + + + -
tim003 0:63f93da46011 122 maxAll(8,255); // + + + + + + + +
tim003 0:63f93da46011 123 */
tim003 0:63f93da46011 124
tim003 0:63f93da46011 125 //
tim003 0:63f93da46011 126
tim003 0:63f93da46011 127 //if you use more then one max7219 the second one should look like this
tim003 0:63f93da46011 128
tim003 0:63f93da46011 129
tim003 0:63f93da46011 130 /*
tim003 0:63f93da46011 131 maxOne(2,1,1); // + - - - - - - -
tim003 0:63f93da46011 132 maxOne(2,2,2); // - + - - - - - -
tim003 0:63f93da46011 133 maxOne(2,3,4); // - - + - - - - -
tim003 0:63f93da46011 134 maxOne(2,4,8); // - - - + - - - -
tim003 0:63f93da46011 135 maxOne(2,5,16); // - - - - + - - -
tim003 0:63f93da46011 136 maxOne(2,6,32); // - - - - - + - -
tim003 0:63f93da46011 137 maxOne(2,7,64); // - - - - - - + -
tim003 0:63f93da46011 138 maxOne(2,8,128); // - - - - - - - +
tim003 0:63f93da46011 139 */
tim003 0:63f93da46011 140
tim003 0:63f93da46011 141
tim003 0:63f93da46011 142 //
tim003 0:63f93da46011 143 wait_ms(2000);
tim003 0:63f93da46011 144
tim003 0:63f93da46011 145 }
tim003 0:63f93da46011 146 /*
tim003 0:63f93da46011 147 class LEDMatrix7219{
tim003 0:63f93da46011 148
tim003 0:63f93da46011 149 public:
tim003 0:63f93da46011 150
tim003 0:63f93da46011 151 LEDMatrix(PinName din, PinName clk, PinName load);
tim003 0:63f93da46011 152
tim003 0:63f93da46011 153 void setIntensity(float intensity);
tim003 0:63f93da46011 154 void setMode
tim003 0:63f93da46011 155 };*/
tim003 0:63f93da46011 156
tim003 0:63f93da46011 157 DigitalOut enable(dp14);
tim003 0:63f93da46011 158 int main() {
tim003 0:63f93da46011 159 enable = 1;
tim003 0:63f93da46011 160 setup ();
tim003 0:63f93da46011 161 loop ();
tim003 0:63f93da46011 162 }
tim003 0:63f93da46011 163
tim003 0:63f93da46011 164
tim003 0:63f93da46011 165
tim003 0:63f93da46011 166