Stefano Fasciani / ARMmbedFMsinth

Simple FM Sound Synthesis with touch screen and accelerometer control, based on STM32F746G-DISCO

Dependencies:   ADXL345 AUDIO_DISCO_F746NG BSP_DISCO_F746NG LCD_DISCO_F746NG SDRAM_DISCO_F746NG TS_DISCO_F746NG mbed-dev

Fork of Workshop_5 by Stefano Fasciani

main.cpp@2:a1330350c32e, 2016-08-23 (annotated)

Committer:
stefanofasciani
Date:
Tue Aug 23 06:34:53 2016 +0000
Revision:
2:a1330350c32e
Parent:
0:da04816fb411
Child:
3:cd1cb0003a3d
First Commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
stefanofasciani 2:a1330350c32e 1 //***********
stefanofasciani 2:a1330350c32e 2 // WORKSHOP 4
stefanofasciani 2:a1330350c32e 3 //***********
stefanofasciani 2:a1330350c32e 4
stefanofasciani 2:a1330350c32e 5 // Author: Stefano Fasciani - stefanofasciani@stefanofasciani.com
stefanofasciani 2:a1330350c32e 6 // Date 7/8/2016
stefanofasciani 2:a1330350c32e 7 // FM Sinth for DISCO_F746NG and ADXL345
adustm 0:da04816fb411 8
stefanofasciani 2:a1330350c32e 9 // Frequency Modulation Sound SYnthesis With Fixed Parameters Displayed on LCD
stefanofasciani 2:a1330350c32e 10
stefanofasciani 2:a1330350c32e 11
stefanofasciani 2:a1330350c32e 12 #include "sinth.h"
stefanofasciani 2:a1330350c32e 13
stefanofasciani 2:a1330350c32e 14
stefanofasciani 2:a1330350c32e 15 ADXL345 accelerometer(D11,D12,D13,D10);
stefanofasciani 2:a1330350c32e 16 TS_DISCO_F746NG ts;
stefanofasciani 2:a1330350c32e 17 TS_StateTypeDef TS;
adustm 0:da04816fb411 18 AUDIO_DISCO_F746NG audio;
adustm 0:da04816fb411 19 SDRAM_DISCO_F746NG sdram;
stefanofasciani 2:a1330350c32e 20 LCD_DISCO_F746NG lcd;
adustm 0:da04816fb411 21 Serial pc(USBTX, USBRX);
adustm 0:da04816fb411 22
stefanofasciani 2:a1330350c32e 23
stefanofasciani 2:a1330350c32e 24 //FM Synthesis Parameters
stefanofasciani 2:a1330350c32e 25 float amplitude = 0.5; //numbers between 0.0 and 1.0
stefanofasciani 2:a1330350c32e 26 float pitch = 400; // numbers between 50 and 5000
stefanofasciani 2:a1330350c32e 27 float modrate = 0; // numbers between -1000 and 1000
stefanofasciani 2:a1330350c32e 28 float moddepth = 0; //numbers between -1000 and 1000
stefanofasciani 2:a1330350c32e 29 float filter = 1.0f; //numbers between 0.0 (full filter) and 1.0 (do not filter)
stefanofasciani 2:a1330350c32e 30
stefanofasciani 2:a1330350c32e 31
adustm 0:da04816fb411 32
stefanofasciani 2:a1330350c32e 33 void get_parameters(){
stefanofasciani 2:a1330350c32e 34
stefanofasciani 2:a1330350c32e 35 char temp_string[20];
stefanofasciani 2:a1330350c32e 36
stefanofasciani 2:a1330350c32e 37 //read input data
stefanofasciani 2:a1330350c32e 38 ts.GetState(&TS);
stefanofasciani 2:a1330350c32e 39 accelerometer.getOutput(acc_readings);
stefanofasciani 2:a1330350c32e 40
stefanofasciani 2:a1330350c32e 41
stefanofasciani 2:a1330350c32e 42 if(TS.touchDetected){
stefanofasciani 2:a1330350c32e 43 //map to synthesis parameters
stefanofasciani 2:a1330350c32e 44 amplitude = 0.5; //map(get_touch_vertical(),0.0,1.0);
stefanofasciani 2:a1330350c32e 45 }
stefanofasciani 2:a1330350c32e 46 else {
stefanofasciani 2:a1330350c32e 47 amplitude = 0;
stefanofasciani 2:a1330350c32e 48 }
stefanofasciani 2:a1330350c32e 49
stefanofasciani 2:a1330350c32e 50
stefanofasciani 2:a1330350c32e 51 pitch = get_note_pitch(); //map(get_touch_horizontal(),50.0,5000.0);
stefanofasciani 2:a1330350c32e 52
stefanofasciani 2:a1330350c32e 53 modrate = map(get_acc_horizontal(), //input
stefanofasciani 2:a1330350c32e 54 0, //modrate range minimum (not less than -1000)
stefanofasciani 2:a1330350c32e 55 200.0); //modrate range maximum (not higher than 1000)
stefanofasciani 2:a1330350c32e 56
stefanofasciani 2:a1330350c32e 57 moddepth = map(get_acc_vertical(), //input
stefanofasciani 2:a1330350c32e 58 -100.0, //moddepth range minimum (not less than -1000)
stefanofasciani 2:a1330350c32e 59 100.0); //moddepth range maximum (not higher than 1000)
stefanofasciani 2:a1330350c32e 60
stefanofasciani 2:a1330350c32e 61
stefanofasciani 2:a1330350c32e 62
stefanofasciani 2:a1330350c32e 63 filter = map(get_touch_vertical(), //input
stefanofasciani 2:a1330350c32e 64 0.0, //filter range minimum (not less than 0.0)
stefanofasciani 2:a1330350c32e 65 0.7); //filter range maximum (not higher than 1.0)
stefanofasciani 2:a1330350c32e 66
stefanofasciani 2:a1330350c32e 67
stefanofasciani 2:a1330350c32e 68 //update display
stefanofasciani 2:a1330350c32e 69 switch(update_round){
stefanofasciani 2:a1330350c32e 70 case 0:
stefanofasciani 2:a1330350c32e 71 sprintf(temp_string,"%f",amplitude); lcd.DisplayStringAt(250, LINE(1),(uint8_t *)temp_string, LEFT_MODE);
stefanofasciani 2:a1330350c32e 72 case 1:
stefanofasciani 2:a1330350c32e 73 sprintf(temp_string,"%f",pitch); lcd.DisplayStringAt(250, LINE(3),(uint8_t *)temp_string, LEFT_MODE);
stefanofasciani 2:a1330350c32e 74 case 2:
stefanofasciani 2:a1330350c32e 75 sprintf(temp_string,"%f",modrate); lcd.DisplayStringAt(250, LINE(5),(uint8_t *)temp_string, LEFT_MODE);
stefanofasciani 2:a1330350c32e 76 case 3:
stefanofasciani 2:a1330350c32e 77 sprintf(temp_string,"%f",moddepth); lcd.DisplayStringAt(250, LINE(7),(uint8_t *)temp_string, LEFT_MODE);
stefanofasciani 2:a1330350c32e 78 case 4:
stefanofasciani 2:a1330350c32e 79 sprintf(temp_string,"%f",filter); lcd.DisplayStringAt(250, LINE(9),(uint8_t *)temp_string, LEFT_MODE);
stefanofasciani 2:a1330350c32e 80 }
stefanofasciani 2:a1330350c32e 81 update_round++;
stefanofasciani 2:a1330350c32e 82 if(update_round>4)update_round=0;
stefanofasciani 2:a1330350c32e 83
stefanofasciani 2:a1330350c32e 84 return;
stefanofasciani 2:a1330350c32e 85 }
stefanofasciani 2:a1330350c32e 86
stefanofasciani 2:a1330350c32e 87
stefanofasciani 2:a1330350c32e 88
adustm 0:da04816fb411 89 int main()
adustm 0:da04816fb411 90 {
stefanofasciani 2:a1330350c32e 91
stefanofasciani 2:a1330350c32e 92 //initialize touch screen
stefanofasciani 2:a1330350c32e 93 ts.Init(lcd.GetXSize(), lcd.GetYSize());
stefanofasciani 2:a1330350c32e 94 wait(0.2);
stefanofasciani 2:a1330350c32e 95
stefanofasciani 2:a1330350c32e 96 // lcd initialization to display synthesis parameter
stefanofasciani 2:a1330350c32e 97 lcd.Clear(LCD_COLOR_BLACK);
stefanofasciani 2:a1330350c32e 98 display_keyboard();
stefanofasciani 2:a1330350c32e 99 lcd.SetBackColor(LCD_COLOR_BLACK);
stefanofasciani 2:a1330350c32e 100 lcd.SetTextColor(LCD_COLOR_LIGHTBLUE);
stefanofasciani 2:a1330350c32e 101 lcd.DisplayStringAt(10, LINE(1),(uint8_t *)"AMPLITUDE :", LEFT_MODE);
stefanofasciani 2:a1330350c32e 102 lcd.DisplayStringAt(10, LINE(3),(uint8_t *)"PITCH (Hz) :", LEFT_MODE);
stefanofasciani 2:a1330350c32e 103 lcd.DisplayStringAt(10, LINE(5),(uint8_t *)"MOD.RATE (Hz):", LEFT_MODE);
stefanofasciani 2:a1330350c32e 104 lcd.DisplayStringAt(10, LINE(7),(uint8_t *)"MOD.DEPTH :", LEFT_MODE);
stefanofasciani 2:a1330350c32e 105 lcd.DisplayStringAt(10, LINE(9),(uint8_t *)"FILTER :", LEFT_MODE);
stefanofasciani 2:a1330350c32e 106
stefanofasciani 2:a1330350c32e 107 wait(0.2);
stefanofasciani 2:a1330350c32e 108
stefanofasciani 2:a1330350c32e 109
stefanofasciani 2:a1330350c32e 110 //initialize accelerometer
stefanofasciani 2:a1330350c32e 111 accelerometer.getDevId();
stefanofasciani 2:a1330350c32e 112 accelerometer.setPowerControl(0x00);
stefanofasciani 2:a1330350c32e 113 accelerometer.setDataFormatControl(0x0B);
stefanofasciani 2:a1330350c32e 114 accelerometer.setDataRate(ADXL345_3200HZ);
stefanofasciani 2:a1330350c32e 115 accelerometer.setPowerControl(0x08);
stefanofasciani 2:a1330350c32e 116 wait(0.2);
stefanofasciani 2:a1330350c32e 117
stefanofasciani 2:a1330350c32e 118 //sound synthesis initialization
stefanofasciani 2:a1330350c32e 119 init_sin_table();
adustm 0:da04816fb411 120 SetSysClock_PLL_HSE_200MHz();
adustm 0:da04816fb411 121 pc.baud(9600);
stefanofasciani 2:a1330350c32e 122 memset((void *)out_buffer, 0, AUDIO_BLOCK_SIZE*2*sizeof(uint16_t));
stefanofasciani 2:a1330350c32e 123 audio_out_buffer_state = BUFFER_OFFSET_NONE;
adustm 0:da04816fb411 124 audio.OUT_SetAudioFrameSlot(CODEC_AUDIOFRAME_SLOT_02);
stefanofasciani 2:a1330350c32e 125 audio.OUT_Play((uint16_t*)out_buffer, AUDIO_BLOCK_SIZE * 2 * sizeof(int16_t));
adustm 0:da04816fb411 126
adustm 0:da04816fb411 127
adustm 0:da04816fb411 128 while (1) {
stefanofasciani 2:a1330350c32e 129
stefanofasciani 2:a1330350c32e 130 while(audio_out_buffer_state != BUFFER_OFFSET_HALF);
stefanofasciani 2:a1330350c32e 131 audio_out_buffer_state = BUFFER_OFFSET_NONE;
stefanofasciani 2:a1330350c32e 132 get_parameters();
stefanofasciani 2:a1330350c32e 133 sint_osc();
stefanofasciani 2:a1330350c32e 134 copy_buffer(0);
stefanofasciani 2:a1330350c32e 135
stefanofasciani 2:a1330350c32e 136
stefanofasciani 2:a1330350c32e 137 while(audio_out_buffer_state != BUFFER_OFFSET_FULL);
stefanofasciani 2:a1330350c32e 138 audio_out_buffer_state = BUFFER_OFFSET_NONE;
stefanofasciani 2:a1330350c32e 139 get_parameters();
stefanofasciani 2:a1330350c32e 140 sint_osc();
stefanofasciani 2:a1330350c32e 141 copy_buffer(AUDIO_BLOCK_SIZE);
stefanofasciani 2:a1330350c32e 142
adustm 0:da04816fb411 143 }
adustm 0:da04816fb411 144 }
adustm 0:da04816fb411 145
stefanofasciani 2:a1330350c32e 146 /*
stefanofasciani 2:a1330350c32e 147 CONNECTION DISCO_F746NG to ADXL345
stefanofasciani 2:a1330350c32e 148 D10 - SS - CS
stefanofasciani 2:a1330350c32e 149 D11 - MOSI - SDA
stefanofasciani 2:a1330350c32e 150 D12 - MISO - SDO
stefanofasciani 2:a1330350c32e 151 D13 - SCK - SCL
stefanofasciani 2:a1330350c32e 152 3V3 - VCC - VCC
stefanofasciani 2:a1330350c32e 153 GND - GND - GND
stefanofasciani 2:a1330350c32e 154 */
adustm 0:da04816fb411 155
stefanofasciani 2:a1330350c32e 156
stefanofasciani 2:a1330350c32e 157
adustm 0:da04816fb411 158
stefanofasciani 2:a1330350c32e 159
stefanofasciani 2:a1330350c32e 160