Luke Cartwright / Mbed 2 deprecated ELEC2645_Project_el18loc_nearlythere

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Dependencies:   mbed

main.cpp@8:f305ea78b2b1, 2020-05-05 (annotated)

Committer:
lukeocarwright
Date:
Tue May 05 16:46:01 2020 +0000
Revision:
8:f305ea78b2b1
Parent:
7:33cb5f2db1ee
Child:
9:f6ba53e355a0
Added Sliders to Faders ready for GUI.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lukeocarwright 2:07cef563acdf 1 /*
eencae 0:b7f1f47bb26a 2 ELEC2645 Embedded Systems Project
eencae 0:b7f1f47bb26a 3 School of Electronic & Electrical Engineering
eencae 0:b7f1f47bb26a 4 University of Leeds
eencae 0:b7f1f47bb26a 5 2019/20
eencae 0:b7f1f47bb26a 6
lukeocarwright 1:766a293c9b07 7 Name: Luke Cartwright
lukeocarwright 1:766a293c9b07 8 Username: el18loc
lukeocarwright 1:766a293c9b07 9 Student ID Number: 201225242
lukeocarwright 2:07cef563acdf 10 Start Date: 06/02/2020
lukeocarwright 7:33cb5f2db1ee 11 Last Edited: 04/05/2020
eencae 0:b7f1f47bb26a 12 */
eencae 0:b7f1f47bb26a 13
lukeocarwright 5:e785b9cd58c9 14 /* TO DO:
lukeocarwright 8:f305ea78b2b1 15 add Menu functionality from front.cpp
lukeocarwright 8:f305ea78b2b1 16 front.h warning sort
lukeocarwright 7:33cb5f2db1ee 17 Settings tab
lukeocarwright 7:33cb5f2db1ee 18 Other wavetables
lukeocarwright 7:33cb5f2db1ee 19 Generate sound
lukeocarwright 7:33cb5f2db1ee 20 ADSR
lukeocarwright 8:f305ea78b2b1 21 MIDI
lukeocarwright 8:f305ea78b2b1 22 LEDS INSTALL
lukeocarwright 5:e785b9cd58c9 23 */
lukeocarwright 2:07cef563acdf 24 // Includes
eencae 0:b7f1f47bb26a 25 #include "mbed.h"
eencae 0:b7f1f47bb26a 26 #include "Gamepad.h"
eencae 0:b7f1f47bb26a 27 #include "N5110.h"
lukeocarwright 8:f305ea78b2b1 28 #include "Menu.h"
lukeocarwright 7:33cb5f2db1ee 29 #include "startup.h"
lukeocarwright 7:33cb5f2db1ee 30 #include "Front.h"
eencae 0:b7f1f47bb26a 31
lukeocarwright 2:07cef563acdf 32 // Objects
eencae 0:b7f1f47bb26a 33 Gamepad pad;
eencae 0:b7f1f47bb26a 34 N5110 lcd;
lukeocarwright 8:f305ea78b2b1 35 Menu menu;
lukeocarwright 7:33cb5f2db1ee 36 startup start;
lukeocarwright 4:9b7ea5528a5c 37 Ticker down;
lukeocarwright 4:9b7ea5528a5c 38 Ticker period;
lukeocarwright 4:9b7ea5528a5c 39
lukeocarwright 4:9b7ea5528a5c 40 DigitalOut rca(PTC4);
lukeocarwright 2:07cef563acdf 41
lukeocarwright 2:07cef563acdf 42 Serial pc(USBTX, USBRX);
lukeocarwright 2:07cef563acdf 43
lukeocarwright 2:07cef563acdf 44 //Functions
lukeocarwright 5:e785b9cd58c9 45 //void squareWave();
lukeocarwright 4:9b7ea5528a5c 46 //void sinspeak();
lukeocarwright 5:e785b9cd58c9 47 //void down_isr();
lukeocarwright 5:e785b9cd58c9 48 //void up_isr();
lukeocarwright 2:07cef563acdf 49
lukeocarwright 2:07cef563acdf 50
lukeocarwright 2:07cef563acdf 51 //Global Variables
lukeocarwright 4:9b7ea5528a5c 52 // all times drastically slowed to attempt debugging in teraterm
lukeocarwright 7:33cb5f2db1ee 53 //float g_period = 0.002;
lukeocarwright 7:33cb5f2db1ee 54 //float g_unused= g_period*1000000.0f;
lukeocarwright 7:33cb5f2db1ee 55 //int g_period_us=g_unused;
lukeocarwright 7:33cb5f2db1ee 56 //volatile uint64_t g_uptime_us = g_period_us/2; // placeholder value
lukeocarwright 4:9b7ea5528a5c 57 //isr interrupt flags
lukeocarwright 7:33cb5f2db1ee 58 //volatile int g_upflag=1;
lukeocarwright 7:33cb5f2db1ee 59 //volatile int g_downflag=1;
eencae 0:b7f1f47bb26a 60
eencae 0:b7f1f47bb26a 61 int main()
eencae 0:b7f1f47bb26a 62 {
lukeocarwright 2:07cef563acdf 63 printf("RUNNING CODE \n");
lukeocarwright 7:33cb5f2db1ee 64 start.initialise(lcd,pad); //initialises board and displays start screen
lukeocarwright 7:33cb5f2db1ee 65 menu.mainmenu(lcd,pad);
lukeocarwright 8:f305ea78b2b1 66 //Menu.mainmenu(lcd, pad); //generates main menu
lukeocarwright 5:e785b9cd58c9 67 //squareWave(); //generates pulse wave modulated by sin wave
lukeocarwright 4:9b7ea5528a5c 68 //sinspeak();
lukeocarwright 2:07cef563acdf 69 }
lukeocarwright 2:07cef563acdf 70
lukeocarwright 5:e785b9cd58c9 71 /*
lukeocarwright 4:9b7ea5528a5c 72 void squareWave()
lukeocarwright 4:9b7ea5528a5c 73 {
lukeocarwright 4:9b7ea5528a5c 74 printf("Generating SIN PWM \n");
lukeocarwright 4:9b7ea5528a5c 75
lukeocarwright 4:9b7ea5528a5c 76 int i=0; //int based iterator
lukeocarwright 4:9b7ea5528a5c 77 float ifl=0; //float based itterator
lukeocarwright 4:9b7ea5528a5c 78 float f=50; //frequency of sin wave produced
lukeocarwright 4:9b7ea5528a5c 79 period.attach_us(&up_isr,g_period_us); //ticker to write 1 to rca
lukeocarwright 4:9b7ea5528a5c 80 down.attach_us(&down_isr,g_uptime_us); //ticker to write 0 to rca
lukeocarwright 5:e785b9cd58c9 81
lukeocarwright 5:e785b9cd58c9 82
lukeocarwright 4:9b7ea5528a5c 83 printf("g_period_us: %d \n", g_period_us);
lukeocarwright 4:9b7ea5528a5c 84 printf("sin Frequency: %f \n", f);
lukeocarwright 4:9b7ea5528a5c 85
lukeocarwright 4:9b7ea5528a5c 86 while (1) { //continual loop for pulse production
lukeocarwright 4:9b7ea5528a5c 87 float dutyratio = wavtable[i]; //calcualtes duty ratio of pulse
lukeocarwright 5:e785b9cd58c9 88
lukeocarwright 4:9b7ea5528a5c 89 g_uptime_us= dutyratio*g_period_us; //calculates duty ratio in usecs
lukeocarwright 4:9b7ea5528a5c 90 if (g_uptime_us<1) {
lukeocarwright 4:9b7ea5528a5c 91 g_uptime_us=g_period_us/100;
lukeocarwright 4:9b7ea5528a5c 92 } //sets to be value for timebeing to eliminate 0 error
lukeocarwright 4:9b7ea5528a5c 93 //float f=440*(pad.read_pot1()+1); //removed for simplification
lukeocarwright 5:e785b9cd58c9 94
lukeocarwright 4:9b7ea5528a5c 95 if (g_upflag==0) {
lukeocarwright 5:e785b9cd58c9 96
lukeocarwright 4:9b7ea5528a5c 97 ifl = ifl + (4096*f*g_period); //once rca=1 itterate sin function
lukeocarwright 4:9b7ea5528a5c 98 if (ifl>4096) {
lukeocarwright 4:9b7ea5528a5c 99 ifl= ifl-4096;
lukeocarwright 4:9b7ea5528a5c 100 }
lukeocarwright 4:9b7ea5528a5c 101 i=ifl;
lukeocarwright 5:e785b9cd58c9 102
lukeocarwright 4:9b7ea5528a5c 103 g_upflag=1; //reset flag
lukeocarwright 4:9b7ea5528a5c 104 //printf("iterate i: i= %d, ifl= %f \n", i, ifl);
lukeocarwright 4:9b7ea5528a5c 105 }
lukeocarwright 5:e785b9cd58c9 106
lukeocarwright 4:9b7ea5528a5c 107 //printf("DR: %f \n",dutyratio);
lukeocarwright 4:9b7ea5528a5c 108 //printf("sleep \n");
lukeocarwright 4:9b7ea5528a5c 109 sleep(); //sleeps till next isr
lukeocarwright 4:9b7ea5528a5c 110 }
lukeocarwright 4:9b7ea5528a5c 111 }
lukeocarwright 4:9b7ea5528a5c 112
lukeocarwright 4:9b7ea5528a5c 113 void down_isr() //sets rca to 0
lukeocarwright 4:9b7ea5528a5c 114 {
lukeocarwright 4:9b7ea5528a5c 115 //printf("downISR \n");
lukeocarwright 4:9b7ea5528a5c 116 if (g_downflag==0) {//stops error trigger
lukeocarwright 4:9b7ea5528a5c 117 rca.write(0);
lukeocarwright 4:9b7ea5528a5c 118 g_downflag=1;
lukeocarwright 4:9b7ea5528a5c 119 g_uptime_us= g_uptime_us+g_period_us; // eliminates it calling if =0
lukeocarwright 4:9b7ea5528a5c 120 //printf("0 \n");//print only in while v. slow freguency
lukeocarwright 4:9b7ea5528a5c 121 }
lukeocarwright 4:9b7ea5528a5c 122 }
lukeocarwright 4:9b7ea5528a5c 123
lukeocarwright 4:9b7ea5528a5c 124 void up_isr() //sets rca=1
lukeocarwright 4:9b7ea5528a5c 125 {
lukeocarwright 4:9b7ea5528a5c 126 //printf("upISR \n");
lukeocarwright 4:9b7ea5528a5c 127 rca.write(1);
lukeocarwright 4:9b7ea5528a5c 128 down.attach_us(&down_isr,g_uptime_us); //timer to set rca=0 after elapsed
lukeocarwright 4:9b7ea5528a5c 129 g_upflag=0; //sets flag to iterate
lukeocarwright 4:9b7ea5528a5c 130 g_downflag=0; //sets flag to allow set to 0
lukeocarwright 4:9b7ea5528a5c 131 //printf("1 \n"); //only in while at v low frequency
lukeocarwright 4:9b7ea5528a5c 132 }
lukeocarwright 4:9b7ea5528a5c 133
lukeocarwright 5:e785b9cd58c9 134 */
lukeocarwright 4:9b7ea5528a5c 135 /*
lukeocarwright 2:07cef563acdf 136 void sinspeak ()
lukeocarwright 2:07cef563acdf 137 {
lukeocarwright 2:07cef563acdf 138 float f1=440.0;
lukeocarwright 2:07cef563acdf 139 float i=0;
lukeocarwright 3:b7df72682b81 140 unsigned short v=0;
lukeocarwright 2:07cef563acdf 141 int inc=0;
lukeocarwright 2:07cef563acdf 142 pad.reset_buttons();
lukeocarwright 2:07cef563acdf 143 f1 = pad.read_pot1();
lukeocarwright 3:b7df72682b81 144 f1 = 440.0f+440.0f*f1;
lukeocarwright 3:b7df72682b81 145 //printf("f1= %f \n",f1); // Used for Debug
lukeocarwright 2:07cef563acdf 146
lukeocarwright 2:07cef563acdf 147 while (inc<3000) {
lukeocarwright 2:07cef563acdf 148 int inti = i;
lukeocarwright 2:07cef563acdf 149 v = o[inti];
lukeocarwright 4:9b7ea5528a5c 150 printf("OUTPUT: %u \n", v);
lukeocarwright 4:9b7ea5528a5c 151 //pad.write_u16(v);
lukeocarwright 3:b7df72682b81 152 wait_us(230); //fs= 4k Ts=250us
lukeocarwright 3:b7df72682b81 153
lukeocarwright 3:b7df72682b81 154 i = i + ((4096.0f*f1)/4000.0f); //i+((samples*f)*Ts)
lukeocarwright 2:07cef563acdf 155 if (i>=4096.0f) {
lukeocarwright 2:07cef563acdf 156 i=i-4096.0f;
lukeocarwright 3:b7df72682b81 157 }
lukeocarwright 3:b7df72682b81 158 else {
lukeocarwright 4:9b7ea5528a5c 159 wait_us(3); // used to attempt note stabilisation to match other loop
lukeocarwright 2:07cef563acdf 160 }
lukeocarwright 2:07cef563acdf 161 inc++;
lukeocarwright 2:07cef563acdf 162 }
lukeocarwright 2:07cef563acdf 163 }
lukeocarwright 4:9b7ea5528a5c 164 */