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Diff: LEDMatrix.h
- Revision:
- 2:e4d483d82cd8
- Parent:
- 0:63f93da46011
diff -r 8186a841911c -r e4d483d82cd8 LEDMatrix.h --- a/LEDMatrix.h Mon May 19 18:17:34 2014 +0000 +++ b/LEDMatrix.h Mon May 26 12:29:55 2014 +0000 @@ -4,4 +4,156 @@ #define LEDMatrix_h +/*#include "LEDMatrix.h" + +//DigitalOut myled(LED1); +AnalogIn pot(dp9); +Serial pc(USBTX, USBRX); + +Ticker t; + + + +// p5: DIN, p7: CLK, p8: LOAD/CS +SPI max72_spi(dp2, dp1, dp6); +DigitalOut load(dp24); //Chip_Select + +int maxInUse = 1; //change this variable to set how many MAX7219's you'll use + +// define max7219 registers +#define max7219_reg_noop 0x00 +#define max7219_reg_digit0 0x01 +#define max7219_reg_digit1 0x02 +#define max7219_reg_digit2 0x03 +#define max7219_reg_digit3 0x04 +#define max7219_reg_digit4 0x05 +#define max7219_reg_digit5 0x06 +#define max7219_reg_digit6 0x07 +#define max7219_reg_digit7 0x08 +#define max7219_reg_decodeMode 0x09 +#define max7219_reg_intensity 0x0a +#define max7219_reg_scanLimit 0x0b +#define max7219_reg_shutdown 0x0c +#define max7219_reg_displayTest 0x0f + +#define LOW 0 +#define HIGH 1 +#define MHZ 1000000 + +void maxSingle( int reg, int col) { +//maxSingle is the "easy" function to use for a +//single max7219 + load = LOW; // begin + max72_spi.write(reg); // specify register + max72_spi.write(col); // put data + load = HIGH; // make sure data is loaded (on rising edge of LOAD/CS) +} + +void maxAll (int reg, int col) { // initialize all MAX7219's in the system + load = LOW; // begin + for ( int c=1; c<= maxInUse; c++) { + max72_spi.write(reg); // specify register + max72_spi.write(col); // put data + } + load = HIGH; +} + +void maxOne(int maxNr, int reg, int col) { +//maxOne is for adressing different MAX7219's, +//while having a couple of them cascaded + int c = 0; + load = LOW; + + for ( c = maxInUse; c > maxNr; c--) { + max72_spi.write(0); // no-op + max72_spi.write(0); // no-op + } + + max72_spi.write(reg); // specify register + max72_spi.write(col); // put data + + for ( c=maxNr-1; c >= 1; c--) { + max72_spi.write(0); // no-op + max72_spi.write(0); // no-op + } + load = HIGH; +} + + +void setup () { + // initiation of the max 7219 + // SPI setup: 8 bits, mode 0 + max72_spi.format(8, 0); + + // going by the datasheet, min clk is 100ns so theoretically 10MHz should work... + // max72_spi.frequency(10*MHZ); + + maxAll(max7219_reg_scanLimit, 0x07); + maxAll(max7219_reg_decodeMode, 0x00); // using an led matrix (not digits) + maxAll(max7219_reg_shutdown, 0x01); // not in shutdown mode + maxAll(max7219_reg_displayTest, 0x00); // no display test + for (int e=1; e<=8; e++) { // empty registers, turn all LEDs off + maxAll(e,0); + } + maxAll(max7219_reg_intensity, 0x0f & 0x0f); // the first 0x0f is the value you can set + // range: 0x00 to 0x0f +} + +void loop () { + + //if you use just one MAX7219 it should look like this + maxSingle(1,0x1f); // + - - - - - - - + maxSingle(2,0x15); // - + - - - - - -,,,,,,,, + maxSingle(3,0x15); // - - + - - - - - + maxSingle(4,0x11); // - - - + - - - - + maxSingle(5,0xf0); // - - - - + - - - + maxSingle(6,0x80); // - - - - - + - - + maxSingle(7,0x80); // - - - - - - + - + maxSingle(8,0x80); // - - - - - - - + + + + //if you use more than one MAX7219, it should look like this + + /* + maxAll(1,1); // + - - - - - - - + maxAll(2,3); // + + - - - - - - + maxAll(3,7); // + + + - - - - - + maxAll(4,15); // + + + + - - - - + maxAll(5,31); // + + + + + - - - + maxAll(6,63); // + + + + + + - - + maxAll(7,127); // + + + + + + + - + maxAll(8,255); // + + + + + + + + + */ + + // + + //if you use more then one max7219 the second one should look like this + + + /* + maxOne(2,1,1); // + - - - - - - - + maxOne(2,2,2); // - + - - - - - - + maxOne(2,3,4); // - - + - - - - - + maxOne(2,4,8); // - - - + - - - - + maxOne(2,5,16); // - - - - + - - - + maxOne(2,6,32); // - - - - - + - - + maxOne(2,7,64); // - - - - - - + - + maxOne(2,8,128); // - - - - - - - + + + + + // + wait_ms(2000); + +}*/ +/* +class LEDMatrix7219{ + +public: + + LEDMatrix(PinName din, PinName clk, PinName load); + + void setIntensity(float intensity); + void setMode +};*/ #endif \ No newline at end of file