Luke Cartwright / Mbed 2 deprecated ELEC2645_Project_el18loc_nearlythere

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Dependencies:   mbed

main.cpp@18:204cd747b54a, 2020-05-21 (annotated)

Committer:
lukeocarwright
Date:
Thu May 21 22:59:59 2020 +0000
Revision:
18:204cd747b54a
Parent:
17:358987e9f30e
Child:
19:08862f49cd9e
Got attack working with hardware glitch (slew rate issue and distortion likely due to loading and amp module). Generates CSV file to check output with envelope.

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 14:9cfe0041cc4e 11 Last Edited: 19/05/2020
eencae 0:b7f1f47bb26a 12 */
eencae 0:b7f1f47bb26a 13
lukeocarwright 5:e785b9cd58c9 14 /* TO DO:
lukeocarwright 17:358987e9f30e 15 Sort Squarewave Sound
lukeocarwright 17:358987e9f30e 16 Add Menu from front.cpp
lukeocarwright 17:358987e9f30e 17 Settings tab functionality
lukeocarwright 17:358987e9f30e 18 ADSR (functionality) (adjust stops sound)
lukeocarwright 8:f305ea78b2b1 19 MIDI
lukeocarwright 8:f305ea78b2b1 20 LEDS INSTALL
lukeocarwright 5:e785b9cd58c9 21 */
lukeocarwright 2:07cef563acdf 22 // Includes
eencae 0:b7f1f47bb26a 23 #include "mbed.h"
eencae 0:b7f1f47bb26a 24 #include "Gamepad.h"
eencae 0:b7f1f47bb26a 25 #include "N5110.h"
lukeocarwright 8:f305ea78b2b1 26 #include "Menu.h"
lukeocarwright 7:33cb5f2db1ee 27 #include "startup.h"
lukeocarwright 7:33cb5f2db1ee 28 #include "Front.h"
eencae 0:b7f1f47bb26a 29
lukeocarwright 9:f6ba53e355a0 30 #ifdef DEBUG
lukeocarwright 9:f6ba53e355a0 31 # include "Debug.h"
lukeocarwright 9:f6ba53e355a0 32 #endif
lukeocarwright 9:f6ba53e355a0 33
lukeocarwright 2:07cef563acdf 34 // Objects
eencae 0:b7f1f47bb26a 35 Gamepad pad;
eencae 0:b7f1f47bb26a 36 N5110 lcd;
lukeocarwright 8:f305ea78b2b1 37 Menu menu;
lukeocarwright 7:33cb5f2db1ee 38 startup start;
lukeocarwright 14:9cfe0041cc4e 39 Ticker tick;
lukeocarwright 4:9b7ea5528a5c 40
lukeocarwright 14:9cfe0041cc4e 41 //DigitalOut rca(PTC4);
lukeocarwright 14:9cfe0041cc4e 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 14:9cfe0041cc4e 47 void noise_isr();
lukeocarwright 2:07cef563acdf 48
lukeocarwright 2:07cef563acdf 49
lukeocarwright 2:07cef563acdf 50 //Global Variables
lukeocarwright 14:9cfe0041cc4e 51 volatile extern int g_isr_flag; //may need extern
lukeocarwright 10:258a1eca02cc 52
lukeocarwright 15:1c67f064278e 53
eencae 0:b7f1f47bb26a 54 int main()
eencae 0:b7f1f47bb26a 55 {
lukeocarwright 2:07cef563acdf 56 printf("RUNNING CODE \n");
lukeocarwright 7:33cb5f2db1ee 57 start.initialise(lcd,pad); //initialises board and displays start screen
lukeocarwright 14:9cfe0041cc4e 58
lukeocarwright 14:9cfe0041cc4e 59 #ifdef DEBUG
lukeocarwright 14:9cfe0041cc4e 60 printf("DEBUG COMPILE RUNNING\n");
lukeocarwright 14:9cfe0041cc4e 61 run_LUTs_debug();
lukeocarwright 14:9cfe0041cc4e 62 #endif
lukeocarwright 14:9cfe0041cc4e 63
lukeocarwright 14:9cfe0041cc4e 64 #ifdef SLOW_TIME //ATTACH TICKERS FOR SOUND
lukeocarwright 15:1c67f064278e 65 printf("Running in SLOW_TIME\n");
lukeocarwright 15:1c67f064278e 66 tick.attach(&noise_isr, 1); //extended for debug (1Hz)
lukeocarwright 15:1c67f064278e 67 #endif
lukeocarwright 18:204cd747b54a 68 #ifdef CSV
lukeocarwright 18:204cd747b54a 69 printf("Running in SLOW_TIME\n");
lukeocarwright 18:204cd747b54a 70 tick.attach_us(&noise_isr, 5000); //extended for debug (1Hz)
lukeocarwright 18:204cd747b54a 71 #endif
lukeocarwright 15:1c67f064278e 72 #ifndef SLOW_TIME
lukeocarwright 18:204cd747b54a 73 #ifndef CSV
lukeocarwright 18:204cd747b54a 74 tick.attach_us(&noise_isr, 63); //normal mode SR=16kHz
lukeocarwright 18:204cd747b54a 75 #endif
lukeocarwright 14:9cfe0041cc4e 76 #endif
lukeocarwright 14:9cfe0041cc4e 77
lukeocarwright 14:9cfe0041cc4e 78 menu.mainmenu(lcd,pad);
lukeocarwright 9:f6ba53e355a0 79
lukeocarwright 14:9cfe0041cc4e 80 //UNUSED FUNCTIONS:-------------------------------------------------------------
lukeocarwright 5:e785b9cd58c9 81 //squareWave(); //generates pulse wave modulated by sin wave
lukeocarwright 4:9b7ea5528a5c 82 //sinspeak();
lukeocarwright 2:07cef563acdf 83 }
lukeocarwright 2:07cef563acdf 84
lukeocarwright 14:9cfe0041cc4e 85 void noise_isr() {
lukeocarwright 14:9cfe0041cc4e 86 #ifdef SLOW_TIME
lukeocarwright 14:9cfe0041cc4e 87 if (g_isr_flag==0) {
lukeocarwright 18:204cd747b54a 88 //printf("ISR INTTERUPT = 1\n");
lukeocarwright 14:9cfe0041cc4e 89 }
lukeocarwright 14:9cfe0041cc4e 90 #endif
lukeocarwright 14:9cfe0041cc4e 91 g_isr_flag=1;
lukeocarwright 14:9cfe0041cc4e 92 }
lukeocarwright 14:9cfe0041cc4e 93
lukeocarwright 5:e785b9cd58c9 94 /*
lukeocarwright 4:9b7ea5528a5c 95 void squareWave()
lukeocarwright 4:9b7ea5528a5c 96 {
lukeocarwright 4:9b7ea5528a5c 97 printf("Generating SIN PWM \n");
lukeocarwright 4:9b7ea5528a5c 98
lukeocarwright 4:9b7ea5528a5c 99 int i=0; //int based iterator
lukeocarwright 4:9b7ea5528a5c 100 float ifl=0; //float based itterator
lukeocarwright 4:9b7ea5528a5c 101 float f=50; //frequency of sin wave produced
lukeocarwright 4:9b7ea5528a5c 102 period.attach_us(&up_isr,g_period_us); //ticker to write 1 to rca
lukeocarwright 4:9b7ea5528a5c 103 down.attach_us(&down_isr,g_uptime_us); //ticker to write 0 to rca
lukeocarwright 5:e785b9cd58c9 104
lukeocarwright 5:e785b9cd58c9 105
lukeocarwright 4:9b7ea5528a5c 106 printf("g_period_us: %d \n", g_period_us);
lukeocarwright 4:9b7ea5528a5c 107 printf("sin Frequency: %f \n", f);
lukeocarwright 4:9b7ea5528a5c 108
lukeocarwright 4:9b7ea5528a5c 109 while (1) { //continual loop for pulse production
lukeocarwright 4:9b7ea5528a5c 110 float dutyratio = wavtable[i]; //calcualtes duty ratio of pulse
lukeocarwright 5:e785b9cd58c9 111
lukeocarwright 4:9b7ea5528a5c 112 g_uptime_us= dutyratio*g_period_us; //calculates duty ratio in usecs
lukeocarwright 4:9b7ea5528a5c 113 if (g_uptime_us<1) {
lukeocarwright 4:9b7ea5528a5c 114 g_uptime_us=g_period_us/100;
lukeocarwright 4:9b7ea5528a5c 115 } //sets to be value for timebeing to eliminate 0 error
lukeocarwright 4:9b7ea5528a5c 116 //float f=440*(pad.read_pot1()+1); //removed for simplification
lukeocarwright 5:e785b9cd58c9 117
lukeocarwright 4:9b7ea5528a5c 118 if (g_upflag==0) {
lukeocarwright 5:e785b9cd58c9 119
lukeocarwright 4:9b7ea5528a5c 120 ifl = ifl + (4096*f*g_period); //once rca=1 itterate sin function
lukeocarwright 4:9b7ea5528a5c 121 if (ifl>4096) {
lukeocarwright 4:9b7ea5528a5c 122 ifl= ifl-4096;
lukeocarwright 4:9b7ea5528a5c 123 }
lukeocarwright 4:9b7ea5528a5c 124 i=ifl;
lukeocarwright 5:e785b9cd58c9 125
lukeocarwright 4:9b7ea5528a5c 126 g_upflag=1; //reset flag
lukeocarwright 4:9b7ea5528a5c 127 //printf("iterate i: i= %d, ifl= %f \n", i, ifl);
lukeocarwright 4:9b7ea5528a5c 128 }
lukeocarwright 5:e785b9cd58c9 129
lukeocarwright 4:9b7ea5528a5c 130 //printf("DR: %f \n",dutyratio);
lukeocarwright 4:9b7ea5528a5c 131 //printf("sleep \n");
lukeocarwright 4:9b7ea5528a5c 132 sleep(); //sleeps till next isr
lukeocarwright 4:9b7ea5528a5c 133 }
lukeocarwright 4:9b7ea5528a5c 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 */