EDP2 / Mbed 2 deprecated EDP2_displa

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Dependencies:   mbed

Fork of EDP2_display by Mmmonicaaaa <3

main.cpp@5:4152a51f0724, 2018-03-07 (annotated)

Committer:
raduschirila
Date:
Wed Mar 07 14:45:18 2018 +0000
Revision:
5:4152a51f0724
Parent:
4:82c807b7685e
Child:
6:66dca4356808
test;

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 5:4152a51f0724 24 InterruptIn button(PTD5);
raduschirila 0:850d65a7d593 25 AnalogIn pulse_in(PTB0);
raduschirila 0:850d65a7d593 26 AnalogOut o(PTE30);
raduschirila 2:281d8c268a8e 27 DigitalOut led(PTD5);
raduschirila 4:82c807b7685e 28 float xi,ypast,y,alpha=0.5,sum=0;
raduschirila 4:82c807b7685e 29 float v[80];
raduschirila 4:82c807b7685e 30 int q=0;
raduschirila 2:281d8c268a8e 31 bool first=true;
raduschirila 3:5f89484f8c84 32
raduschirila 5:4152a51f0724 33 inline bool slope(float f[80])
raduschirila 5:4152a51f0724 34 {
raduschirila 5:4152a51f0724 35 float r=(f[9]-f[3])/6;
raduschirila 5:4152a51f0724 36 return( (r>-0.01 && r<-0.03) ? true: false);
raduschirila 5:4152a51f0724 37 }
raduschirila 4:82c807b7685e 38
raduschirila 0:850d65a7d593 39 void get_pulse()
raduschirila 0:850d65a7d593 40 {
raduschirila 4:82c807b7685e 41 xi=(float)pulse_in;
raduschirila 2:281d8c268a8e 42 //noise reduction algorithm
raduschirila 4:82c807b7685e 43 if(!first) { //noise filtering procedure
raduschirila 3:5f89484f8c84 44 y= (alpha*xi)+ ((1-alpha)*ypast);
raduschirila 4:82c807b7685e 45 ypast=y;
raduschirila 4:82c807b7685e 46 sum+=y;
raduschirila 4:82c807b7685e 47 q++;
raduschirila 4:82c807b7685e 48 } else
raduschirila 2:281d8c268a8e 49 first=false;
raduschirila 4:82c807b7685e 50 //normalization procedure
raduschirila 4:82c807b7685e 51 v[q-1]=y-(sum/(float)q)+0.1;//normalization procedure raw pulse value minus the trendline(running average)
raduschirila 5:4152a51f0724 52 //o=v[q-1];
raduschirila 4:82c807b7685e 53 if(q==80) {
raduschirila 4:82c807b7685e 54 q=0;
raduschirila 4:82c807b7685e 55 sum=sum/80;
raduschirila 4:82c807b7685e 56 }
raduschirila 5:4152a51f0724 57 if(slope) frq++;
raduschirila 4:82c807b7685e 58
raduschirila 0:850d65a7d593 59 }
raduschirila 0:850d65a7d593 60
raduschirila 0:850d65a7d593 61
raduschirila 0:850d65a7d593 62
raduschirila 0:850d65a7d593 63
raduschirila 0:850d65a7d593 64 #define LOW 0
raduschirila 0:850d65a7d593 65 #define HIGH 1
raduschirila 0:850d65a7d593 66
raduschirila 0:850d65a7d593 67 SPI max72_spi(PTD2, NC, PTD1);
raduschirila 0:850d65a7d593 68 DigitalOut load(PTD0); //will provide the load signal
raduschirila 0:850d65a7d593 69
raduschirila 4:82c807b7685e 70 //patterns declarations do not touch
raduschirila 4:82c807b7685e 71 char heart[8] = {0x00,0x36,0x7f,0x7f,0x3e,0x1c,0x08,0x00};
raduschirila 4:82c807b7685e 72 char five[8]= {0x7c,0x40,0x40,0x78,0x04,0x04,0x04,0x78};
raduschirila 4:82c807b7685e 73 char six[8]= {0x00,0x3c,0x20,0x20,0x3e,0x22,0x22,0x3e};
raduschirila 4:82c807b7685e 74 char seven[8]= {0x7c,0x04,0x04,0x08,0x08,0x08,0x08,0x08};
raduschirila 4:82c807b7685e 75 char eight[8]= {0x7e,0x42,0x42,0x42,0x7e,0x42,0x42,0x7e};
raduschirila 4:82c807b7685e 76 char nine[8]= {0x3e,0x22,0x22,0x3e,0x02,0x02,0x02,0x1e};
raduschirila 4:82c807b7685e 77 char ten[8]= {0x4f,0x49,0x49,0x49,0x49,0x49,0x49,0x4f};
raduschirila 4:82c807b7685e 78 char eleven[8]= {0x48,0x48,0x48,0x48,0x48,0x48,0x48,0x48};
raduschirila 4:82c807b7685e 79 char twlv[8]= {0x4f,0x41,0x41,0x41,0x4f,0x48,0x48,0x4f};
raduschirila 4:82c807b7685e 80 char thirtn[8]= {0x4f,0x41,0x41,0x4f,0x41,0x41,0x41,0x4f};
raduschirila 4:82c807b7685e 81 char fourtn[8]= {0x49,0x49,0x49,0x4f,0x41,0x41,0x41,0x41};
raduschirila 4:82c807b7685e 82 char fiftn[8]= {0x4f,0x48,0x48,0x4f,0x41,0x41,0x41,0x4f};
raduschirila 5:4152a51f0724 83 char wave[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01};
raduschirila 0:850d65a7d593 84
raduschirila 0:850d65a7d593 85
raduschirila 1:82127072abb8 86 //DISPLAY FUNCTIONS DO NOT TOUCH
raduschirila 1:82127072abb8 87
raduschirila 0:850d65a7d593 88 void write_to_max( int reg, int col)
raduschirila 0:850d65a7d593 89 {
raduschirila 0:850d65a7d593 90 load = LOW; // begin
raduschirila 0:850d65a7d593 91 max72_spi.write(reg); // specify register
raduschirila 0:850d65a7d593 92 max72_spi.write(col); // put data
raduschirila 0:850d65a7d593 93 load = HIGH; // make sure data is loaded (on rising edge of LOAD/CS)
raduschirila 0:850d65a7d593 94 }
raduschirila 0:850d65a7d593 95
raduschirila 4:82c807b7685e 96 //writes 8 bytes to the display
raduschirila 4:82c807b7685e 97 void pattern_to_display(char *testdata)
raduschirila 4:82c807b7685e 98 {
raduschirila 4:82c807b7685e 99 int cdata;
raduschirila 0:850d65a7d593 100 for(int idx = 0; idx <= 7; idx++) {
raduschirila 4:82c807b7685e 101 cdata = testdata[idx];
raduschirila 0:850d65a7d593 102 write_to_max(idx+1,cdata);
raduschirila 0:850d65a7d593 103 }
raduschirila 4:82c807b7685e 104 }
raduschirila 4:82c807b7685e 105
raduschirila 0:850d65a7d593 106
raduschirila 0:850d65a7d593 107 void setup_dot_matrix ()
raduschirila 0:850d65a7d593 108 {
raduschirila 0:850d65a7d593 109 // initiation of the max 7219
raduschirila 0:850d65a7d593 110 // SPI setup: 8 bits, mode 0
raduschirila 0:850d65a7d593 111 max72_spi.format(8, 0);
raduschirila 4:82c807b7685e 112
raduschirila 4:82c807b7685e 113
raduschirila 4:82c807b7685e 114
raduschirila 4:82c807b7685e 115 max72_spi.frequency(100000); //down to 100khx easier to scope ;-)
raduschirila 4:82c807b7685e 116
raduschirila 0:850d65a7d593 117
raduschirila 0:850d65a7d593 118 write_to_max(max7219_reg_scanLimit, 0x07);
raduschirila 0:850d65a7d593 119 write_to_max(max7219_reg_decodeMode, 0x00); // using an led matrix (not digits)
raduschirila 0:850d65a7d593 120 write_to_max(max7219_reg_shutdown, 0x01); // not in shutdown mode
raduschirila 0:850d65a7d593 121 write_to_max(max7219_reg_displayTest, 0x00); // no display test
raduschirila 0:850d65a7d593 122 for (int e=1; e<=8; e++) { // empty registers, turn all LEDs off
raduschirila 0:850d65a7d593 123 write_to_max(e,0);
raduschirila 0:850d65a7d593 124 }
raduschirila 4:82c807b7685e 125 // maxAll(max7219_reg_intensity, 0x0f & 0x0f); // the first 0x0f is the value you can set
raduschirila 4:82c807b7685e 126 write_to_max(max7219_reg_intensity, 0x08);
raduschirila 4:82c807b7685e 127
raduschirila 0:850d65a7d593 128 }
raduschirila 0:850d65a7d593 129
raduschirila 4:82c807b7685e 130 void clear()
raduschirila 4:82c807b7685e 131 {
raduschirila 4:82c807b7685e 132 for (int e=1; e<=8; e++) { // empty registers, turn all LEDs off
raduschirila 0:850d65a7d593 133 write_to_max(e,0);
raduschirila 0:850d65a7d593 134 }
raduschirila 0:850d65a7d593 135 }
raduschirila 1:82127072abb8 136
raduschirila 1:82127072abb8 137 //END OF DISPLAY FUNCTIONS
raduschirila 1:82127072abb8 138
raduschirila 4:82c807b7685e 139
raduschirila 3:5f89484f8c84 140
raduschirila 3:5f89484f8c84 141
raduschirila 3:5f89484f8c84 142
raduschirila 1:82127072abb8 143 void splash_screen()
raduschirila 0:850d65a7d593 144 {
raduschirila 0:850d65a7d593 145 setup_dot_matrix (); /* setup matric */
raduschirila 0:850d65a7d593 146 pattern_to_display(heart);
raduschirila 0:850d65a7d593 147 wait_ms(1000);
raduschirila 4:82c807b7685e 148 heart[7]=0x01;
raduschirila 4:82c807b7685e 149 heart[0]=0x01;
raduschirila 4:82c807b7685e 150 for(int i=1; i<=8; ++i) {
raduschirila 0:850d65a7d593 151 pattern_to_display(heart);
raduschirila 0:850d65a7d593 152 wait(0.2);
raduschirila 0:850d65a7d593 153 heart[7]<<=1;
raduschirila 0:850d65a7d593 154 heart[7]|=1;
raduschirila 0:850d65a7d593 155 heart[0]=heart[7];
raduschirila 0:850d65a7d593 156 }
raduschirila 4:82c807b7685e 157 for(int i=1; i<=6; ++i) {
raduschirila 0:850d65a7d593 158 heart[i]=~heart[i];
raduschirila 4:82c807b7685e 159 }
raduschirila 0:850d65a7d593 160 pattern_to_display(heart);
raduschirila 4:82c807b7685e 161 wait(1);
raduschirila 4:82c807b7685e 162 clear();
raduschirila 4:82c807b7685e 163 }
raduschirila 4:82c807b7685e 164 void shift_all(char wav[8])
raduschirila 4:82c807b7685e 165 {
raduschirila 4:82c807b7685e 166 for(int i=1;i<=7;++i)
raduschirila 4:82c807b7685e 167 {
raduschirila 4:82c807b7685e 168 wav[i-1]=wav[i];
raduschirila 4:82c807b7685e 169 }
raduschirila 4:82c807b7685e 170 wav[7]=0x00;
raduschirila 4:82c807b7685e 171 pattern_to_display(wav);
raduschirila 0:850d65a7d593 172 }
raduschirila 4:82c807b7685e 173 char wave[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01};
raduschirila 1:82127072abb8 174
raduschirila 5:4152a51f0724 175 void frq()
raduschirila 5:4152a51f0724 176 {
raduschirila 5:4152a51f0724 177
raduschirila 5:4152a51f0724 178
raduschirila 4:82c807b7685e 179 void disp()
raduschirila 4:82c807b7685e 180 {
raduschirila 4:82c807b7685e 181 int steps=v[q]/0.0125;
raduschirila 4:82c807b7685e 182 for(int i=1;i<=steps;++i)
raduschirila 4:82c807b7685e 183 {
raduschirila 4:82c807b7685e 184 wave[7]<<=1;
raduschirila 4:82c807b7685e 185 wave[7]|=1;
raduschirila 4:82c807b7685e 186
raduschirila 4:82c807b7685e 187 }
raduschirila 4:82c807b7685e 188 pattern_to_display(wave);
raduschirila 4:82c807b7685e 189 shift_all(wave);
raduschirila 4:82c807b7685e 190 }
raduschirila 3:5f89484f8c84 191
raduschirila 1:82127072abb8 192 int main()
raduschirila 1:82127072abb8 193 {
raduschirila 5:4152a51f0724 194 splash_screen();//wait for the pulse to be stable by showing stuff on the display so the user is happy
raduschirila 2:281d8c268a8e 195 pulse.attach(&get_pulse,0.0125);//attach the interrupt thing so it starts the ISR every 0.0125 s
raduschirila 5:4152a51f0724 196 button.rise(%frq);
raduschirila 4:82c807b7685e 197 display_rate.attach(&disp,0.1);
raduschirila 4:82c807b7685e 198 while(1) {
raduschirila 1:82127072abb8 199 }
raduschirila 1:82127072abb8 200 }