Takeuchi Kouichi
/
20160505_V13_LedMatrix
LedMatrix 1枚 その3 です。
main.cpp
- Committer:
- takeuchi
- Date:
- 2016-05-27
- Revision:
- 0:997bf7ee01b0
File content as of revision 0:997bf7ee01b0:
// LedMatrix 1mai #include "mbed.h" DigitalOut led(dp28); // spi(mosi,miso,sck) SPI max72_spi(dp2, NC, dp6); DigitalOut load(dp14);//spi load // CPU MT7219 // dp1 mosi(Master In Salve Out) => DIN // dp2 miso(Master OutSlave) => nc // dp6 sck (Serial Clock) => clk // dp14 =>(Slave Select) load 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 #define ON 1 #define OFF 0 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 led_flash(){ int i; for(i=0;i<3;i++){ led=ON; wait(0.1); led=OFF; wait(0.1); } } int main(void) { const uint64_t moji_font[] = {// bold font , kagami moji font 0x3c66666e76663c00,//0~9 0x7e1818181c181800, 0x7e060c3060663c00, 0x3c66603860663c00, 0x30307e3234383000, 0x3c6660603e067e00, 0x3c66663e06663c00, 0x1818183030667e00, 0x3c66663c66663c00, 0x3c66607c66663c00, }; int i,j,k; uint8_t bitsum[1][8],bit1gyou,bitline[80]; uint64_t moji1; setup(); led_flash(); wait(0.1); while(1){ for(i=0;i<10;i++){ moji1=moji_font[i];// 0~9 for(j=0;j<8;j++){ bitsum[i][j]=0; } for(j=0;j<8;j++){ bit1gyou=moji1 & 0xff; for(k=0;k<8;k++){// kagamimoji no font //for(k=8;k>=1;k--){ // futuu no font bitsum[i][k]=bitsum[i][k]+(bit1gyou & 0x01)*pow((double)2,(double)(j)); bit1gyou=bit1gyou >> 1; }//i moji1=moji1 >> 8; }//j } k=0; for(i=0;i<10;i++){// matrix data henkan for(j=0;j<8;j++){ bitline[k]=bitsum[i][j]; k++; } } for(i=0;i<80;i=i+8){//1 moji goto hyouji led=ON; maxSingle(1,bitline[i+0]); maxSingle(2,bitline[i+1]); maxSingle(3,bitline[i+2]); maxSingle(4,bitline[i+3]); maxSingle(5,bitline[i+4]); maxSingle(6,bitline[i+5]); maxSingle(7,bitline[i+6]); maxSingle(8,bitline[i+7]); wait(0.2); led=OFF; wait(0.1); } }//while }//main