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LukaIElmir26
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LEDMatrix.h
- Committer:
- tim003
- Date:
- 2014-06-02
- Revision:
- 6:dd675b967b60
- Parent:
- 2:e4d483d82cd8
File content as of revision 6:dd675b967b60:
#include "mbed.h" #ifndef LEDMatrix_h #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