EDP2 / Mbed 2 deprecated EDP2_displa

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Dependencies:   mbed

Fork of EDP2_display by Mmmonicaaaa <3

main.cpp@4:82c807b7685e, 2018-03-06 (annotated)

Committer:
raduschirila
Date:
Tue Mar 06 16:19:18 2018 +0000
Revision:
4:82c807b7685e
Parent:
3:5f89484f8c84
Child:
5:4152a51f0724
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
raduschirila 0:850d65a7d593 1 #include "mbed.h"
raduschirila 0:850d65a7d593 2
raduschirila 0:850d65a7d593 3
raduschirila 0:850d65a7d593 4 #define max7219_reg_noop 0x00
raduschirila 0:850d65a7d593 5 #define max7219_reg_digit0 0x01
raduschirila 0:850d65a7d593 6 #define max7219_reg_digit1 0x02
raduschirila 0:850d65a7d593 7 #define max7219_reg_digit2 0x03
raduschirila 0:850d65a7d593 8 #define max7219_reg_digit3 0x04
raduschirila 0:850d65a7d593 9 #define max7219_reg_digit4 0x05
raduschirila 0:850d65a7d593 10 #define max7219_reg_digit5 0x06
raduschirila 0:850d65a7d593 11 #define max7219_reg_digit6 0x07
raduschirila 0:850d65a7d593 12 #define max7219_reg_digit7 0x08
raduschirila 0:850d65a7d593 13 #define max7219_reg_decodeMode 0x09
raduschirila 0:850d65a7d593 14 #define max7219_reg_intensity 0x0a
raduschirila 0:850d65a7d593 15 #define max7219_reg_scanLimit 0x0b
raduschirila 0:850d65a7d593 16 #define max7219_reg_shutdown 0x0c
raduschirila 0:850d65a7d593 17 #define max7219_reg_displayTest 0x0f
raduschirila 0:850d65a7d593 18
raduschirila 0:850d65a7d593 19
raduschirila 0:850d65a7d593 20
raduschirila 0:850d65a7d593 21
raduschirila 2:281d8c268a8e 22 Serial pc(USBTX, USBRX); // tx, rx this is for the data to be sent via the usb port to the computer
raduschirila 4:82c807b7685e 23 Ticker pulse,freq,display_rate;
raduschirila 0:850d65a7d593 24 AnalogIn pulse_in(PTB0);
raduschirila 0:850d65a7d593 25 AnalogOut o(PTE30);
raduschirila 2:281d8c268a8e 26 DigitalOut led(PTD5);
raduschirila 4:82c807b7685e 27 float xi,ypast,y,alpha=0.5,sum=0;
raduschirila 4:82c807b7685e 28 float v[80];
raduschirila 4:82c807b7685e 29 int q=0;
raduschirila 2:281d8c268a8e 30 bool first=true;
raduschirila 3:5f89484f8c84 31
raduschirila 4:82c807b7685e 32
raduschirila 4:82c807b7685e 33
raduschirila 0:850d65a7d593 34 void get_pulse()
raduschirila 0:850d65a7d593 35 {
raduschirila 4:82c807b7685e 36 xi=(float)pulse_in;
raduschirila 2:281d8c268a8e 37 //noise reduction algorithm
raduschirila 4:82c807b7685e 38 if(!first) { //noise filtering procedure
raduschirila 3:5f89484f8c84 39 y= (alpha*xi)+ ((1-alpha)*ypast);
raduschirila 4:82c807b7685e 40 ypast=y;
raduschirila 4:82c807b7685e 41 sum+=y;
raduschirila 4:82c807b7685e 42 q++;
raduschirila 4:82c807b7685e 43 } else
raduschirila 2:281d8c268a8e 44 first=false;
raduschirila 4:82c807b7685e 45 //normalization procedure
raduschirila 4:82c807b7685e 46 v[q-1]=y-(sum/(float)q)+0.1;//normalization procedure raw pulse value minus the trendline(running average)
raduschirila 4:82c807b7685e 47 o=v[q-1];
raduschirila 4:82c807b7685e 48 if(q==80) {
raduschirila 4:82c807b7685e 49 q=0;
raduschirila 4:82c807b7685e 50 sum=sum/80;
raduschirila 4:82c807b7685e 51 }
raduschirila 4:82c807b7685e 52
raduschirila 0:850d65a7d593 53 }
raduschirila 0:850d65a7d593 54
raduschirila 0:850d65a7d593 55
raduschirila 0:850d65a7d593 56
raduschirila 0:850d65a7d593 57
raduschirila 0:850d65a7d593 58 #define LOW 0
raduschirila 0:850d65a7d593 59 #define HIGH 1
raduschirila 0:850d65a7d593 60
raduschirila 0:850d65a7d593 61 SPI max72_spi(PTD2, NC, PTD1);
raduschirila 0:850d65a7d593 62 DigitalOut load(PTD0); //will provide the load signal
raduschirila 0:850d65a7d593 63
raduschirila 4:82c807b7685e 64 //patterns declarations do not touch
raduschirila 4:82c807b7685e 65 char heart[8] = {0x00,0x36,0x7f,0x7f,0x3e,0x1c,0x08,0x00};
raduschirila 4:82c807b7685e 66 char five[8]= {0x7c,0x40,0x40,0x78,0x04,0x04,0x04,0x78};
raduschirila 4:82c807b7685e 67 char six[8]= {0x00,0x3c,0x20,0x20,0x3e,0x22,0x22,0x3e};
raduschirila 4:82c807b7685e 68 char seven[8]= {0x7c,0x04,0x04,0x08,0x08,0x08,0x08,0x08};
raduschirila 4:82c807b7685e 69 char eight[8]= {0x7e,0x42,0x42,0x42,0x7e,0x42,0x42,0x7e};
raduschirila 4:82c807b7685e 70 char nine[8]= {0x3e,0x22,0x22,0x3e,0x02,0x02,0x02,0x1e};
raduschirila 4:82c807b7685e 71 char ten[8]= {0x4f,0x49,0x49,0x49,0x49,0x49,0x49,0x4f};
raduschirila 4:82c807b7685e 72 char eleven[8]= {0x48,0x48,0x48,0x48,0x48,0x48,0x48,0x48};
raduschirila 4:82c807b7685e 73 char twlv[8]= {0x4f,0x41,0x41,0x41,0x4f,0x48,0x48,0x4f};
raduschirila 4:82c807b7685e 74 char thirtn[8]= {0x4f,0x41,0x41,0x4f,0x41,0x41,0x41,0x4f};
raduschirila 4:82c807b7685e 75 char fourtn[8]= {0x49,0x49,0x49,0x4f,0x41,0x41,0x41,0x41};
raduschirila 4:82c807b7685e 76 char fiftn[8]= {0x4f,0x48,0x48,0x4f,0x41,0x41,0x41,0x4f};
raduschirila 0:850d65a7d593 77
raduschirila 0:850d65a7d593 78
raduschirila 0:850d65a7d593 79
raduschirila 1:82127072abb8 80 //DISPLAY FUNCTIONS DO NOT TOUCH
raduschirila 1:82127072abb8 81
raduschirila 0:850d65a7d593 82 void write_to_max( int reg, int col)
raduschirila 0:850d65a7d593 83 {
raduschirila 0:850d65a7d593 84 load = LOW; // begin
raduschirila 0:850d65a7d593 85 max72_spi.write(reg); // specify register
raduschirila 0:850d65a7d593 86 max72_spi.write(col); // put data
raduschirila 0:850d65a7d593 87 load = HIGH; // make sure data is loaded (on rising edge of LOAD/CS)
raduschirila 0:850d65a7d593 88 }
raduschirila 0:850d65a7d593 89
raduschirila 4:82c807b7685e 90 //writes 8 bytes to the display
raduschirila 4:82c807b7685e 91 void pattern_to_display(char *testdata)
raduschirila 4:82c807b7685e 92 {
raduschirila 4:82c807b7685e 93 int cdata;
raduschirila 0:850d65a7d593 94 for(int idx = 0; idx <= 7; idx++) {
raduschirila 4:82c807b7685e 95 cdata = testdata[idx];
raduschirila 0:850d65a7d593 96 write_to_max(idx+1,cdata);
raduschirila 0:850d65a7d593 97 }
raduschirila 4:82c807b7685e 98 }
raduschirila 4:82c807b7685e 99
raduschirila 0:850d65a7d593 100
raduschirila 0:850d65a7d593 101 void setup_dot_matrix ()
raduschirila 0:850d65a7d593 102 {
raduschirila 0:850d65a7d593 103 // initiation of the max 7219
raduschirila 0:850d65a7d593 104 // SPI setup: 8 bits, mode 0
raduschirila 0:850d65a7d593 105 max72_spi.format(8, 0);
raduschirila 4:82c807b7685e 106
raduschirila 4:82c807b7685e 107
raduschirila 4:82c807b7685e 108
raduschirila 4:82c807b7685e 109 max72_spi.frequency(100000); //down to 100khx easier to scope ;-)
raduschirila 4:82c807b7685e 110
raduschirila 0:850d65a7d593 111
raduschirila 0:850d65a7d593 112 write_to_max(max7219_reg_scanLimit, 0x07);
raduschirila 0:850d65a7d593 113 write_to_max(max7219_reg_decodeMode, 0x00); // using an led matrix (not digits)
raduschirila 0:850d65a7d593 114 write_to_max(max7219_reg_shutdown, 0x01); // not in shutdown mode
raduschirila 0:850d65a7d593 115 write_to_max(max7219_reg_displayTest, 0x00); // no display test
raduschirila 0:850d65a7d593 116 for (int e=1; e<=8; e++) { // empty registers, turn all LEDs off
raduschirila 0:850d65a7d593 117 write_to_max(e,0);
raduschirila 0:850d65a7d593 118 }
raduschirila 4:82c807b7685e 119 // maxAll(max7219_reg_intensity, 0x0f & 0x0f); // the first 0x0f is the value you can set
raduschirila 4:82c807b7685e 120 write_to_max(max7219_reg_intensity, 0x08);
raduschirila 4:82c807b7685e 121
raduschirila 0:850d65a7d593 122 }
raduschirila 0:850d65a7d593 123
raduschirila 4:82c807b7685e 124 void clear()
raduschirila 4:82c807b7685e 125 {
raduschirila 4:82c807b7685e 126 for (int e=1; e<=8; e++) { // empty registers, turn all LEDs off
raduschirila 0:850d65a7d593 127 write_to_max(e,0);
raduschirila 0:850d65a7d593 128 }
raduschirila 0:850d65a7d593 129 }
raduschirila 1:82127072abb8 130
raduschirila 1:82127072abb8 131 //END OF DISPLAY FUNCTIONS
raduschirila 1:82127072abb8 132
raduschirila 4:82c807b7685e 133
raduschirila 3:5f89484f8c84 134
raduschirila 3:5f89484f8c84 135
raduschirila 3:5f89484f8c84 136
raduschirila 1:82127072abb8 137 void splash_screen()
raduschirila 0:850d65a7d593 138 {
raduschirila 0:850d65a7d593 139 setup_dot_matrix (); /* setup matric */
raduschirila 0:850d65a7d593 140 pattern_to_display(heart);
raduschirila 0:850d65a7d593 141 wait_ms(1000);
raduschirila 4:82c807b7685e 142 heart[7]=0x01;
raduschirila 4:82c807b7685e 143 heart[0]=0x01;
raduschirila 4:82c807b7685e 144 for(int i=1; i<=8; ++i) {
raduschirila 0:850d65a7d593 145 pattern_to_display(heart);
raduschirila 0:850d65a7d593 146 wait(0.2);
raduschirila 0:850d65a7d593 147 heart[7]<<=1;
raduschirila 0:850d65a7d593 148 heart[7]|=1;
raduschirila 0:850d65a7d593 149 heart[0]=heart[7];
raduschirila 0:850d65a7d593 150 }
raduschirila 4:82c807b7685e 151 for(int i=1; i<=6; ++i) {
raduschirila 0:850d65a7d593 152 heart[i]=~heart[i];
raduschirila 4:82c807b7685e 153 }
raduschirila 0:850d65a7d593 154 pattern_to_display(heart);
raduschirila 4:82c807b7685e 155 wait(1);
raduschirila 4:82c807b7685e 156 clear();
raduschirila 4:82c807b7685e 157 }
raduschirila 4:82c807b7685e 158 void shift_all(char wav[8])
raduschirila 4:82c807b7685e 159 {
raduschirila 4:82c807b7685e 160 for(int i=1;i<=7;++i)
raduschirila 4:82c807b7685e 161 {
raduschirila 4:82c807b7685e 162 wav[i-1]=wav[i];
raduschirila 4:82c807b7685e 163 }
raduschirila 4:82c807b7685e 164 wav[7]=0x00;
raduschirila 4:82c807b7685e 165 pattern_to_display(wav);
raduschirila 0:850d65a7d593 166 }
raduschirila 4:82c807b7685e 167 char wave[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01};
raduschirila 1:82127072abb8 168
raduschirila 4:82c807b7685e 169 void disp()
raduschirila 4:82c807b7685e 170 {
raduschirila 4:82c807b7685e 171 int steps=v[q]/0.0125;
raduschirila 4:82c807b7685e 172 for(int i=1;i<=steps;++i)
raduschirila 4:82c807b7685e 173 {
raduschirila 4:82c807b7685e 174 wave[7]<<=1;
raduschirila 4:82c807b7685e 175 wave[7]|=1;
raduschirila 4:82c807b7685e 176
raduschirila 4:82c807b7685e 177 }
raduschirila 4:82c807b7685e 178 pattern_to_display(wave);
raduschirila 4:82c807b7685e 179 shift_all(wave);
raduschirila 4:82c807b7685e 180 }
raduschirila 3:5f89484f8c84 181
raduschirila 1:82127072abb8 182 int main()
raduschirila 1:82127072abb8 183 {
raduschirila 2:281d8c268a8e 184 pulse.attach(&get_pulse,0.0125);//attach the interrupt thing so it starts the ISR every 0.0125 s
raduschirila 4:82c807b7685e 185
raduschirila 4:82c807b7685e 186 //splash_screen();//wait for the pulse to be stable by showing stuff on the display so the user is happy knowing he is gay
raduschirila 4:82c807b7685e 187 display_rate.attach(&disp,0.1);
raduschirila 4:82c807b7685e 188 while(1) {
raduschirila 1:82127072abb8 189 }
raduschirila 1:82127072abb8 190 }