main.cpp

00001 // Author: Stefano Fasciani - stefanofasciani@stefanofasciani.com
00002 // Date 7/8/2016
00003 // FM Sinth for DISCO_F746NG and ADXL345
00004 
00005 
00006 #include "sinth.h"
00007 
00008 ADXL345 accelerometer(D11,D12,D13,D10);
00009 TS_DISCO_F746NG ts;
00010 TS_StateTypeDef TS;
00011 AUDIO_DISCO_F746NG audio;
00012 SDRAM_DISCO_F746NG sdram;
00013 LCD_DISCO_F746NG lcd;
00014 Serial pc(USBTX, USBRX);
00015 
00016 
00017 //FM Synthesis Initial Parameters
00018 float amplitude = 0.5; //numbers between 0.0 and 1.0
00019 float pitch = 400; // numbers between 50 and 5000
00020 float modrate = 0; // numbers between -1000 and 1000
00021 float moddepth = 0; //numbers between -1000 and 1000
00022 float filter = 1.0f; //numbers between 0.0 (full filter) and 1.0 (do not filter)
00023 
00024 
00025 
00026 void get_parameters(){
00027         
00028     char temp_string[20];
00029     
00030     //read input data
00031     ts.GetState(&TS);
00032     accelerometer.getOutput(acc_readings);
00033     
00034     
00035     if(TS.touchDetected){
00036         //map to synthesis parameters
00037         amplitude = 0.5; //map(get_touch_vertical(),0.0,1.0);
00038     }
00039     else {
00040         amplitude = 0;    
00041     }
00042     
00043     
00044     pitch = get_note_pitch(); //map(get_touch_horizontal(),50.0,5000.0);
00045     
00046     modrate = map(get_acc_horizontal(), //input
00047                     0, //modrate range minimum (not less than -1000)
00048                     200.0); //modrate range maximum (not higher than 1000)
00049     
00050     moddepth = map(get_acc_vertical(), //input
00051                     -100.0, //moddepth range minimum (not less than -1000)
00052                     100.0); //moddepth range maximum (not higher than 1000)
00053     
00054     
00055     
00056     filter = map(get_touch_vertical(), //input
00057                     0.0, //filter range minimum (not less than 0.0)
00058                     0.7); //filter range maximum (not higher than 1.0)
00059     
00060     
00061     //update display
00062     switch(update_round){
00063     case 0:
00064         sprintf(temp_string,"%f",amplitude); lcd.DisplayStringAt(250, LINE(1),(uint8_t *)temp_string, LEFT_MODE);
00065     case 1:
00066         sprintf(temp_string,"%f",pitch); lcd.DisplayStringAt(250, LINE(3),(uint8_t *)temp_string, LEFT_MODE);
00067     case 2:
00068         sprintf(temp_string,"%f",modrate); lcd.DisplayStringAt(250, LINE(5),(uint8_t *)temp_string, LEFT_MODE);
00069     case 3:
00070         sprintf(temp_string,"%f",moddepth); lcd.DisplayStringAt(250, LINE(7),(uint8_t *)temp_string, LEFT_MODE);
00071     case 4:
00072         sprintf(temp_string,"%f",filter); lcd.DisplayStringAt(250, LINE(9),(uint8_t *)temp_string, LEFT_MODE);
00073     }
00074     update_round++;
00075     if(update_round>4)update_round=0;
00076     
00077     return;    
00078 }
00079 
00080 
00081 
00082 int main()
00083 {
00084     
00085     //initialize touch screen
00086     ts.Init(lcd.GetXSize(), lcd.GetYSize());
00087     wait(0.2);
00088     
00089     // lcd initialization to display synthesis parameter
00090     lcd.Clear(LCD_COLOR_BLACK);
00091     display_keyboard();
00092     lcd.SetBackColor(LCD_COLOR_BLACK);
00093     lcd.SetTextColor(LCD_COLOR_LIGHTBLUE);
00094     lcd.DisplayStringAt(10, LINE(1),(uint8_t *)"AMPLITUDE    :", LEFT_MODE); 
00095     lcd.DisplayStringAt(10, LINE(3),(uint8_t *)"PITCH (Hz)   :", LEFT_MODE); 
00096     lcd.DisplayStringAt(10, LINE(5),(uint8_t *)"MOD.RATE (Hz):", LEFT_MODE); 
00097     lcd.DisplayStringAt(10, LINE(7),(uint8_t *)"MOD.DEPTH    :", LEFT_MODE);
00098     lcd.DisplayStringAt(10, LINE(9),(uint8_t *)"FILTER       :", LEFT_MODE);
00099     
00100     wait(0.2);
00101 
00102     
00103     //initialize accelerometer
00104     accelerometer.getDevId();
00105     accelerometer.setPowerControl(0x00);
00106     accelerometer.setDataFormatControl(0x0B);   
00107     accelerometer.setDataRate(ADXL345_3200HZ);
00108     accelerometer.setPowerControl(0x08);
00109     wait(0.2);
00110 
00111     //sound synthesis initialization
00112     init_sin_table();
00113     SetSysClock_PLL_HSE_200MHz();
00114     pc.baud(9600);
00115     memset((void *)out_buffer, 0, AUDIO_BLOCK_SIZE*2*sizeof(uint16_t));    
00116     audio_out_buffer_state = BUFFER_OFFSET_NONE;
00117     audio.OUT_SetAudioFrameSlot(CODEC_AUDIOFRAME_SLOT_02);
00118     audio.OUT_Play((uint16_t*)out_buffer, AUDIO_BLOCK_SIZE * 2 * sizeof(int16_t));
00119 
00120   
00121     while (1) {
00122 
00123         while(audio_out_buffer_state != BUFFER_OFFSET_HALF);
00124         audio_out_buffer_state = BUFFER_OFFSET_NONE;
00125         get_parameters();
00126         sint_osc();
00127         copy_buffer(0);
00128         
00129         
00130         while(audio_out_buffer_state != BUFFER_OFFSET_FULL);
00131         audio_out_buffer_state = BUFFER_OFFSET_NONE;
00132         get_parameters();
00133         sint_osc();
00134         copy_buffer(AUDIO_BLOCK_SIZE);
00135              
00136     }
00137 }
00138 
00139 /*
00140 CONNECTION DISCO_F746NG to ADXL345
00141 D10 -   SS      - CS
00142 D11 -   MOSI    - SDA
00143 D12 -   MISO    - SDO
00144 D13 -   SCK     - SCL
00145 3V3 -   VCC     - VCC
00146 GND -   GND     - GND
00147 */
00148 
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00153