David Bottrill
USBMIDI sampled pipe organ uses real pipe organ samples to produce a realistic sound with 16 note polyphony. A serial output will drive external TPIC6A596 shift registers that could be used to drive pipe organ magnets (Solenoid valves)
Dependencies: TextLCD USBDevice mbed
main.cpp@17:7f27f4921305, 2015-11-12 (annotated)
- Committer:
- djbottrill
- Date:
- Thu Nov 12 22:48:31 2015 +0000
- Revision:
- 17:7f27f4921305
- Parent:
- 16:d2694fb530c3
- Child:
- 18:472954b6b711
Corrupted samples
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| djbottrill | 0:4d06e0867376 | 1 | /* |
| djbottrill | 0:4d06e0867376 | 2 | Program to drive organ magnets from a MIDI input |
| djbottrill | 0:4d06e0867376 | 3 | From Midi note 36 the notes are send to a 96 bit shift register organ magnet driver board based on 12 x TPIC6B595 shift registers |
| djbottrill | 16:d2694fb530c3 | 4 | The program uses the DAC to generate 16 sampled audio channel outputs at up to 44.1Khz that mirror the solenoid outputs, but also run from |
| djbottrill | 0:4d06e0867376 | 5 | MIDI note 24 so the bottom 16' octave can be generated electronically if 16' pipes are not feasible. |
| djbottrill | 0:4d06e0867376 | 6 | In fact the sampled output could be tailored to fill in any missing note ranges, |
| djbottrill | 0:4d06e0867376 | 7 | Repeated pressing sw3 cycles through a number of display modes. |
| djbottrill | 0:4d06e0867376 | 8 | */ |
| djbottrill | 0:4d06e0867376 | 9 | #include "mbed.h" |
| djbottrill | 0:4d06e0867376 | 10 | |
| djbottrill | 17:7f27f4921305 | 11 | #include "Bourdon_44.h" //This is the best sample 44.1Khz |
| djbottrill | 17:7f27f4921305 | 12 | #include "Montre_44.h" |
| djbottrill | 17:7f27f4921305 | 13 | const float sample1_rate = 0.00002268; //44.1KHz |
| djbottrill | 17:7f27f4921305 | 14 | const float freqtab[] = { |
| djbottrill | 17:7f27f4921305 | 15 | //For Organ Sample played at sample speed |
| djbottrill | 17:7f27f4921305 | 16 | 1, 1.0596, 1.1227, 1.1893, 1.2599, 1.3348, 1.4144, 1.4985, 1.5872, 1.6819, 1.782, 1.888, 2 }; |
| djbottrill | 17:7f27f4921305 | 17 | |
| djbottrill | 0:4d06e0867376 | 18 | |
| djbottrill | 0:4d06e0867376 | 19 | #include "USBMIDI.h" |
| djbottrill | 0:4d06e0867376 | 20 | |
| djbottrill | 0:4d06e0867376 | 21 | #include "TextLCD.h" |
| djbottrill | 0:4d06e0867376 | 22 | //For Linksprite LCD Shield |
| djbottrill | 0:4d06e0867376 | 23 | //TextLCD lcd(PTC12, D9, D4, D5, D6, D7); // rs, e, d4-d7 |
| djbottrill | 0:4d06e0867376 | 24 | //DigitalOut bl(D10); |
| djbottrill | 0:4d06e0867376 | 25 | //D8 is wrong on K64F definition it is actually PTC12 not PTA0 |
| djbottrill | 0:4d06e0867376 | 26 | |
| djbottrill | 0:4d06e0867376 | 27 | //For Midas 2x16 OLED Display |
| djbottrill | 0:4d06e0867376 | 28 | TextLCD lcd (D2, D3, D4, D5,D6, D7, TextLCD::LCD16x2, NC, NC, TextLCD::WS0010 ); // 4bit bus: RS, E, D4-D7, LCDType=LCD16x2, BL=NC, E2=NC, LCDTCtrl=WS0010 |
| djbottrill | 0:4d06e0867376 | 29 | |
| djbottrill | 0:4d06e0867376 | 30 | //Serial pc(USBTX, USBRX); // tx, rx |
| djbottrill | 0:4d06e0867376 | 31 | |
| djbottrill | 0:4d06e0867376 | 32 | AnalogOut Aout(DAC0_OUT); |
| djbottrill | 0:4d06e0867376 | 33 | |
| djbottrill | 0:4d06e0867376 | 34 | DigitalOut redled(LED1); |
| djbottrill | 0:4d06e0867376 | 35 | DigitalOut greenled(LED2); |
| djbottrill | 0:4d06e0867376 | 36 | DigitalOut blueled(LED3); |
| djbottrill | 0:4d06e0867376 | 37 | |
| djbottrill | 0:4d06e0867376 | 38 | DigitalOut diag(D15); |
| djbottrill | 0:4d06e0867376 | 39 | DigitalOut diag2(D14); |
| djbottrill | 0:4d06e0867376 | 40 | |
| djbottrill | 0:4d06e0867376 | 41 | DigitalIn sw1(PTC6); |
| djbottrill | 0:4d06e0867376 | 42 | DigitalIn sw3(PTA4); |
| djbottrill | 0:4d06e0867376 | 43 | |
| djbottrill | 12:74b52900cddb | 44 | //Stop switches on = 0 |
| djbottrill | 15:c1854904f0d7 | 45 | DigitalIn p1 (PTB2); //16' |
| djbottrill | 15:c1854904f0d7 | 46 | DigitalIn p2 (PTB3); //8' |
| djbottrill | 15:c1854904f0d7 | 47 | DigitalIn p3 (PTB10); //4' |
| djbottrill | 15:c1854904f0d7 | 48 | DigitalIn p4 (PTB11); //2 2/3' |
| djbottrill | 15:c1854904f0d7 | 49 | DigitalIn p5 (PTC11); //2' |
| djbottrill | 12:74b52900cddb | 50 | |
| djbottrill | 0:4d06e0867376 | 51 | //Wi-Fi connector J6 note pin 3 is incorrectly idenifed in the documentation as PTC12 |
| djbottrill | 9:b0f110c02b1b | 52 | //Connects the shift register solenoid driver board |
| djbottrill | 0:4d06e0867376 | 53 | DigitalOut SRCK(PTD7); //Shift Register clock |
| djbottrill | 0:4d06e0867376 | 54 | DigitalOut RCK(PTD5); //Shift Register latch |
| djbottrill | 0:4d06e0867376 | 55 | DigitalOut SER1(PTB20); //Shift Register serial data outout |
| djbottrill | 0:4d06e0867376 | 56 | |
| djbottrill | 0:4d06e0867376 | 57 | |
| djbottrill | 9:b0f110c02b1b | 58 | Ticker output_ticker; //Ticker for sound generation |
| djbottrill | 0:4d06e0867376 | 59 | |
| djbottrill | 11:a27a71f7c149 | 60 | unsigned char keybuf[128]= {}; |
| djbottrill | 11:a27a71f7c149 | 61 | unsigned char oldkeybuf[128]= {}; |
| djbottrill | 0:4d06e0867376 | 62 | int keystat[128]= {}; |
| djbottrill | 16:d2694fb530c3 | 63 | int keyidx=0; //Key index |
| djbottrill | 0:4d06e0867376 | 64 | |
| djbottrill | 0:4d06e0867376 | 65 | int key=0; |
| djbottrill | 0:4d06e0867376 | 66 | int velocity=0; |
| djbottrill | 0:4d06e0867376 | 67 | int chan=0; |
| djbottrill | 0:4d06e0867376 | 68 | int onoff=0; |
| djbottrill | 0:4d06e0867376 | 69 | |
| djbottrill | 0:4d06e0867376 | 70 | unsigned int audio_out; //Audio output value accumulator |
| djbottrill | 0:4d06e0867376 | 71 | |
| djbottrill | 0:4d06e0867376 | 72 | //OLELD display bar graph characters |
| djbottrill | 0:4d06e0867376 | 73 | const char udc0[] = {0x15, 0x00, 0x00, 0x00, 0x00, 0x00, 0x15, 0x00}; |
| djbottrill | 0:4d06e0867376 | 74 | const char udc1[] = {0x15, 0x10, 0x10, 0x10, 0x10, 0x10, 0x15, 0x00}; |
| djbottrill | 0:4d06e0867376 | 75 | const char udc2[] = {0x15, 0x04, 0x04, 0x04, 0x04, 0x04, 0x15, 0x00}; |
| djbottrill | 0:4d06e0867376 | 76 | const char udc3[] = {0x15, 0x14, 0x14, 0x14, 0x14, 0x14, 0x15, 0x00}; |
| djbottrill | 0:4d06e0867376 | 77 | const char udc4[] = {0x15, 0x01, 0x01, 0x01, 0x01, 0x01, 0x15, 0x00}; |
| djbottrill | 0:4d06e0867376 | 78 | const char udc5[] = {0x15, 0x11, 0x11, 0x11, 0x11, 0x11, 0x15, 0x00}; |
| djbottrill | 0:4d06e0867376 | 79 | const char udc6[] = {0x15, 0x05, 0x05, 0x05, 0x05, 0x05, 0x15, 0x00}; |
| djbottrill | 0:4d06e0867376 | 80 | const char udc7[] = {0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x00}; |
| djbottrill | 0:4d06e0867376 | 81 | |
| djbottrill | 0:4d06e0867376 | 82 | //Variables for LCD/OLED display |
| djbottrill | 0:4d06e0867376 | 83 | unsigned long int lcd_stat=0; |
| djbottrill | 0:4d06e0867376 | 84 | unsigned long int lcd_stat_old=1; |
| djbottrill | 0:4d06e0867376 | 85 | char display[2][16]; //Display Buffer |
| djbottrill | 0:4d06e0867376 | 86 | char display_old[2][16]; //Old Display Buffer |
| djbottrill | 0:4d06e0867376 | 87 | int pos=0; //Display Position counter |
| djbottrill | 0:4d06e0867376 | 88 | int row=0; |
| djbottrill | 0:4d06e0867376 | 89 | int tval=0; |
| djbottrill | 12:74b52900cddb | 90 | int tval1=0; |
| djbottrill | 0:4d06e0867376 | 91 | int keyidx_t=0; |
| djbottrill | 0:4d06e0867376 | 92 | int lcdmode=0; //LCD Display Mode |
| djbottrill | 8:df5f305aab22 | 93 | int x =0; |
| djbottrill | 8:df5f305aab22 | 94 | int x1=1; |
| djbottrill | 9:b0f110c02b1b | 95 | |
| djbottrill | 0:4d06e0867376 | 96 | int sw1_count=0; //Switch de-bounce counter |
| djbottrill | 0:4d06e0867376 | 97 | int sw1_old=0; |
| djbottrill | 0:4d06e0867376 | 98 | int sw1_phase=0; |
| djbottrill | 0:4d06e0867376 | 99 | int sw3_count=0; //Switch de-bounce counter |
| djbottrill | 0:4d06e0867376 | 100 | int sw3_old=0; |
| djbottrill | 0:4d06e0867376 | 101 | int sw3_phase=0; |
| djbottrill | 16:d2694fb530c3 | 102 | unsigned char stops[5]; |
| djbottrill | 16:d2694fb530c3 | 103 | int oldstops=1; |
| djbottrill | 0:4d06e0867376 | 104 | |
| djbottrill | 0:4d06e0867376 | 105 | //Sound generator variables |
| djbottrill | 17:7f27f4921305 | 106 | int sampleset=0; |
| djbottrill | 0:4d06e0867376 | 107 | int tempidx=0; |
| djbottrill | 0:4d06e0867376 | 108 | int freqidx=45; |
| djbottrill | 0:4d06e0867376 | 109 | float synth[16]; |
| djbottrill | 0:4d06e0867376 | 110 | float synthidx[16]; |
| djbottrill | 0:4d06e0867376 | 111 | int synth_old[16]; |
| djbottrill | 0:4d06e0867376 | 112 | int synthtab[16]= {}; |
| djbottrill | 0:4d06e0867376 | 113 | int synthstat[16]= {}; |
| djbottrill | 4:9f63e68b548e | 114 | unsigned char synthoctave[16]= {}; |
| djbottrill | 4:9f63e68b548e | 115 | unsigned char synthnote[16]= {}; |
| djbottrill | 12:74b52900cddb | 116 | int sucess=0; |
| djbottrill | 0:4d06e0867376 | 117 | int noteidx=0; |
| djbottrill | 0:4d06e0867376 | 118 | int i; |
| djbottrill | 0:4d06e0867376 | 119 | int ii; |
| djbottrill | 9:b0f110c02b1b | 120 | int cl; |
| djbottrill | 0:4d06e0867376 | 121 | |
| djbottrill | 0:4d06e0867376 | 122 | /* |
| djbottrill | 0:4d06e0867376 | 123 | Ticker routine to calculate and output the audio signal. |
| djbottrill | 0:4d06e0867376 | 124 | As the DAC is 12 bit this allows for 16 concurrennt 8 bit samples running with no additional loss of precision. |
| djbottrill | 0:4d06e0867376 | 125 | The samples should be normalised to maximise the 8 bit range as only one sample is used there is no need to generate sounds with different amplitude. |
| djbottrill | 5:13a1e5e4494d | 126 | Sound Generation is in 4 states stored in synthstat: |
| djbottrill | 0:4d06e0867376 | 127 | 0 = Synth Channel idle |
| djbottrill | 0:4d06e0867376 | 128 | 1 = Attack / Sustain phase note running and looping if necessary |
| djbottrill | 5:13a1e5e4494d | 129 | 2 = Signal to start decay this may be delayed until the sound is paat the initial attack point typically 100-200 mS |
| djbottrill | 0:4d06e0867376 | 130 | 3 = Sample is in the decay phase. |
| djbottrill | 0:4d06e0867376 | 131 | |
| djbottrill | 5:13a1e5e4494d | 132 | This routine also handles the Synchronous output to a 96 bit shift register Organ Pallet magnet driver board, one bit is sent per tick. |
| djbottrill | 0:4d06e0867376 | 133 | The data clock pulse is generated during the 16 channel synth scan and the final latch pulse is generated on the 96th Tick. |
| djbottrill | 0:4d06e0867376 | 134 | All 96 bits are clocked out in around 4.4mS. |
| djbottrill | 0:4d06e0867376 | 135 | */ |
| djbottrill | 0:4d06e0867376 | 136 | void aout() |
| djbottrill | 0:4d06e0867376 | 137 | { |
| djbottrill | 15:c1854904f0d7 | 138 | // diag=1; //Pulse DIAG Pin for Scoping purposes IE pin high |
| djbottrill | 15:c1854904f0d7 | 139 | // redled=0; //Pulse Red LED to indicate Ticker working |
| djbottrill | 0:4d06e0867376 | 140 | audio_out=0; //Clear Audio Accumulator |
| djbottrill | 17:7f27f4921305 | 141 | if (sampleset==0) { |
| djbottrill | 17:7f27f4921305 | 142 | for (i =0; i<16; i++) { //Do 16 channels |
| djbottrill | 17:7f27f4921305 | 143 | switch (synthstat[i]) { |
| djbottrill | 17:7f27f4921305 | 144 | case 1: //Sustain phase |
| djbottrill | 17:7f27f4921305 | 145 | if (synth[i]>sample1_loop_end[synthoctave[i]]) { //Got to end of buffer? |
| djbottrill | 17:7f27f4921305 | 146 | synth[i]=sample1_loop_start[synthoctave[i]]; //Wrap around back to start |
| djbottrill | 17:7f27f4921305 | 147 | } |
| djbottrill | 17:7f27f4921305 | 148 | break; |
| djbottrill | 17:7f27f4921305 | 149 | case 2: //Note off demand state |
| djbottrill | 17:7f27f4921305 | 150 | if (synth[i]>=sample1_attack[synthoctave[i]]) { //Delay decay phase if not past end of attack |
| djbottrill | 0:4d06e0867376 | 151 | //Check if the waveform is close to zero crossing this helps eliminate clicks looks for rising edge approaching 0x80 |
| djbottrill | 17:7f27f4921305 | 152 | tempidx=synth[i]; |
| djbottrill | 17:7f27f4921305 | 153 | if (sample1[synthoctave[i]][tempidx]<128 & sample1[synthoctave[i]][tempidx]>120) { |
| djbottrill | 17:7f27f4921305 | 154 | if (sample1[synthoctave[i]][tempidx]>synth_old[i]) { |
| djbottrill | 17:7f27f4921305 | 155 | synth[i]=sample1_loop_off[synthoctave[i]]; //Jump to start of decay |
| djbottrill | 17:7f27f4921305 | 156 | synthstat[i]=3; //Say note in decay |
| djbottrill | 17:7f27f4921305 | 157 | } |
| djbottrill | 0:4d06e0867376 | 158 | } |
| djbottrill | 0:4d06e0867376 | 159 | } |
| djbottrill | 17:7f27f4921305 | 160 | break; |
| djbottrill | 17:7f27f4921305 | 161 | case 3: //Check if decay has completed |
| djbottrill | 17:7f27f4921305 | 162 | if (synth[i]>=sample1_len[synthoctave[i]]) { //End of decay? |
| djbottrill | 17:7f27f4921305 | 163 | synthstat[i]=0; //say channel free |
| djbottrill | 17:7f27f4921305 | 164 | synth[i]=0; //Set sample pointer to 0 |
| djbottrill | 17:7f27f4921305 | 165 | synthidx[i]=0; //Set sample index to 0 |
| djbottrill | 17:7f27f4921305 | 166 | synthtab[i]=255; //Set to invalid |
| djbottrill | 17:7f27f4921305 | 167 | } |
| djbottrill | 17:7f27f4921305 | 168 | break ; |
| djbottrill | 17:7f27f4921305 | 169 | } |
| djbottrill | 4:9f63e68b548e | 170 | |
| djbottrill | 4:9f63e68b548e | 171 | //get sample and add to Audio Accumulator |
| djbottrill | 17:7f27f4921305 | 172 | synth_old[i]=sample1[synthoctave[i]][(int)(synth[i])]; //Get and save old sample |
| djbottrill | 17:7f27f4921305 | 173 | audio_out=audio_out+synth_old[i]; //add sample to audio out accumulator |
| djbottrill | 17:7f27f4921305 | 174 | synth[i]=synth[i]+synthidx[i]; //Get next sample pointer |
| djbottrill | 17:7f27f4921305 | 175 | |
| djbottrill | 17:7f27f4921305 | 176 | } //Next Note |
| djbottrill | 17:7f27f4921305 | 177 | } else { |
| djbottrill | 17:7f27f4921305 | 178 | |
| djbottrill | 17:7f27f4921305 | 179 | //Sample Set 2 |
| djbottrill | 16:d2694fb530c3 | 180 | |
| djbottrill | 17:7f27f4921305 | 181 | for (i =0; i<16; i++) { //Do 16 channels |
| djbottrill | 17:7f27f4921305 | 182 | switch (synthstat[i]) { |
| djbottrill | 17:7f27f4921305 | 183 | case 1: //Sustain phase |
| djbottrill | 17:7f27f4921305 | 184 | if (synth[i]>sample2_loop_end[synthoctave[i]]) { //Got to end of buffer? |
| djbottrill | 17:7f27f4921305 | 185 | synth[i]=sample2_loop_start[synthoctave[i]]; //Wrap around back to start |
| djbottrill | 17:7f27f4921305 | 186 | } |
| djbottrill | 17:7f27f4921305 | 187 | break; |
| djbottrill | 17:7f27f4921305 | 188 | case 2: //Note off demand state |
| djbottrill | 17:7f27f4921305 | 189 | if (synth[i]>=sample2_attack[synthoctave[i]]) { //Delay decay phase if not past end of attack |
| djbottrill | 17:7f27f4921305 | 190 | //Check if the waveform is close to zero crossing this helps eliminate clicks looks for rising edge approaching 0x80 |
| djbottrill | 17:7f27f4921305 | 191 | tempidx=synth[i]; |
| djbottrill | 17:7f27f4921305 | 192 | if (sample2[synthoctave[i]][tempidx]<128 & sample2[synthoctave[i]][tempidx]>120) { |
| djbottrill | 17:7f27f4921305 | 193 | if (sample2[synthoctave[i]][tempidx]>synth_old[i]) { |
| djbottrill | 17:7f27f4921305 | 194 | synth[i]=sample1_loop_off[synthoctave[i]]; //Jump to start of decay |
| djbottrill | 17:7f27f4921305 | 195 | synthstat[i]=3; //Say note in decay |
| djbottrill | 17:7f27f4921305 | 196 | } |
| djbottrill | 17:7f27f4921305 | 197 | } |
| djbottrill | 17:7f27f4921305 | 198 | } |
| djbottrill | 17:7f27f4921305 | 199 | break; |
| djbottrill | 17:7f27f4921305 | 200 | case 3: //Check if decay has completed |
| djbottrill | 17:7f27f4921305 | 201 | if (synth[i]>=sample2_len[synthoctave[i]]) { //End of decay? |
| djbottrill | 17:7f27f4921305 | 202 | synthstat[i]=0; //say channel free |
| djbottrill | 17:7f27f4921305 | 203 | synth[i]=0; //Set sample pointer to 0 |
| djbottrill | 17:7f27f4921305 | 204 | synthidx[i]=0; //Set sample index to 0 |
| djbottrill | 17:7f27f4921305 | 205 | synthtab[i]=255; //Set to invalid |
| djbottrill | 17:7f27f4921305 | 206 | } |
| djbottrill | 17:7f27f4921305 | 207 | break ; |
| djbottrill | 17:7f27f4921305 | 208 | } |
| djbottrill | 17:7f27f4921305 | 209 | |
| djbottrill | 17:7f27f4921305 | 210 | //get sample and add to Audio Accumulator |
| djbottrill | 17:7f27f4921305 | 211 | synth_old[i]=sample2[synthoctave[i]][(int)(synth[i])]; //Get and save old sample |
| djbottrill | 17:7f27f4921305 | 212 | audio_out=audio_out+synth_old[i]; //add sample to audio out accumulator |
| djbottrill | 17:7f27f4921305 | 213 | synth[i]=synth[i]+synthidx[i]; //Get next sample pointer |
| djbottrill | 17:7f27f4921305 | 214 | |
| djbottrill | 17:7f27f4921305 | 215 | } //Next Note |
| djbottrill | 17:7f27f4921305 | 216 | } |
| djbottrill | 17:7f27f4921305 | 217 | |
| djbottrill | 8:df5f305aab22 | 218 | |
| djbottrill | 0:4d06e0867376 | 219 | //Output to DAC |
| djbottrill | 0:4d06e0867376 | 220 | Aout.write_u16(audio_out*16); |
| djbottrill | 7:e1ea1623c6c2 | 221 | |
| djbottrill | 15:c1854904f0d7 | 222 | // redled=1; |
| djbottrill | 15:c1854904f0d7 | 223 | // diag=0; |
| djbottrill | 0:4d06e0867376 | 224 | } |
| djbottrill | 0:4d06e0867376 | 225 | |
| djbottrill | 0:4d06e0867376 | 226 | /* |
| djbottrill | 0:4d06e0867376 | 227 | Interrupt routine to receive MIDI on/off message and set LED status accordingly |
| djbottrill | 0:4d06e0867376 | 228 | MIDI note on/off events directly start/stop the synth channels and store the note status in keytab. |
| djbottrill | 0:4d06e0867376 | 229 | */ |
| djbottrill | 0:4d06e0867376 | 230 | void get_message(MIDIMessage msg) |
| djbottrill | 0:4d06e0867376 | 231 | { |
| djbottrill | 0:4d06e0867376 | 232 | greenled=0; //Pulse Green LED to indicate MIDI activity |
| djbottrill | 0:4d06e0867376 | 233 | key=msg.key(); |
| djbottrill | 0:4d06e0867376 | 234 | velocity=msg.velocity(); |
| djbottrill | 0:4d06e0867376 | 235 | chan=msg.channel(); |
| djbottrill | 0:4d06e0867376 | 236 | switch (msg.type()) { |
| djbottrill | 0:4d06e0867376 | 237 | case MIDIMessage::NoteOnType: //MIDI note on received |
| djbottrill | 15:c1854904f0d7 | 238 | if (key >35 & key<97) { |
| djbottrill | 0:4d06e0867376 | 239 | onoff=1; |
| djbottrill | 16:d2694fb530c3 | 240 | if (stops[0]==0) { |
| djbottrill | 13:decb94698003 | 241 | keybuf[(key-36)]|= 1 << 0; //Store @ 16' pitch |
| djbottrill | 12:74b52900cddb | 242 | } |
| djbottrill | 16:d2694fb530c3 | 243 | if (stops[1]==0) { |
| djbottrill | 13:decb94698003 | 244 | keybuf[(key-24)]|= 1 << 1; //Store @ 8' pitch |
| djbottrill | 15:c1854904f0d7 | 245 | } |
| djbottrill | 16:d2694fb530c3 | 246 | if (stops[2]==0) { |
| djbottrill | 13:decb94698003 | 247 | keybuf[(key)-12]|= 1 << 2; //Store @ 4' pitch |
| djbottrill | 15:c1854904f0d7 | 248 | } |
| djbottrill | 16:d2694fb530c3 | 249 | if (stops[3]==0) { |
| djbottrill | 13:decb94698003 | 250 | keybuf[(key)-5]|= 1 << 3; //Store @ 2 2/3' pitch |
| djbottrill | 15:c1854904f0d7 | 251 | } |
| djbottrill | 16:d2694fb530c3 | 252 | if (stops[4]==0) { |
| djbottrill | 13:decb94698003 | 253 | keybuf[(key)]|= 1 << 4; //Store @ 2' pitch |
| djbottrill | 15:c1854904f0d7 | 254 | } |
| djbottrill | 0:4d06e0867376 | 255 | } |
| djbottrill | 6:073e10217962 | 256 | |
| djbottrill | 0:4d06e0867376 | 257 | break; |
| djbottrill | 0:4d06e0867376 | 258 | |
| djbottrill | 0:4d06e0867376 | 259 | //Process keys off |
| djbottrill | 0:4d06e0867376 | 260 | case MIDIMessage::NoteOffType: //Midi note off received |
| djbottrill | 15:c1854904f0d7 | 261 | if (key >35 & key<97) { |
| djbottrill | 0:4d06e0867376 | 262 | onoff=0; |
| djbottrill | 15:c1854904f0d7 | 263 | keybuf[(key-36)]&= ~(1 << 0); //Kill note @ 16' pitch |
| djbottrill | 15:c1854904f0d7 | 264 | keybuf[(key-24)]&= ~(1 << 1); //Kill note @ 8' pitch |
| djbottrill | 15:c1854904f0d7 | 265 | keybuf[(key-12)]&= ~(1 << 2); //Kill note @ 4' pitch |
| djbottrill | 15:c1854904f0d7 | 266 | keybuf[(key-5)]&= ~(1 << 3); //Kill note @ 2 2/3' pitch |
| djbottrill | 15:c1854904f0d7 | 267 | keybuf[(key)]&= ~(1 << 4); //Kill note @ 2' pitch |
| djbottrill | 0:4d06e0867376 | 268 | } |
| djbottrill | 0:4d06e0867376 | 269 | break; |
| djbottrill | 0:4d06e0867376 | 270 | |
| djbottrill | 0:4d06e0867376 | 271 | //Process all notes off command |
| djbottrill | 0:4d06e0867376 | 272 | case MIDIMessage::AllNotesOffType: //Midi all notes off |
| djbottrill | 11:a27a71f7c149 | 273 | for (int it=0; it<108; it++) { |
| djbottrill | 11:a27a71f7c149 | 274 | keybuf[it]=0; //Clear Keybuf |
| djbottrill | 0:4d06e0867376 | 275 | } |
| djbottrill | 0:4d06e0867376 | 276 | break; |
| djbottrill | 4:9f63e68b548e | 277 | |
| djbottrill | 0:4d06e0867376 | 278 | //Any other MIDI Commands just ignore |
| djbottrill | 0:4d06e0867376 | 279 | default: |
| djbottrill | 0:4d06e0867376 | 280 | break; |
| djbottrill | 0:4d06e0867376 | 281 | } |
| djbottrill | 0:4d06e0867376 | 282 | greenled=1; |
| djbottrill | 0:4d06e0867376 | 283 | } |
| djbottrill | 0:4d06e0867376 | 284 | |
| djbottrill | 0:4d06e0867376 | 285 | |
| djbottrill | 0:4d06e0867376 | 286 | int main() |
| djbottrill | 0:4d06e0867376 | 287 | { |
| djbottrill | 0:4d06e0867376 | 288 | greenled=1; |
| djbottrill | 0:4d06e0867376 | 289 | redled=1; |
| djbottrill | 0:4d06e0867376 | 290 | blueled=1; |
| djbottrill | 0:4d06e0867376 | 291 | SRCK=0; //Serial Clock low |
| djbottrill | 0:4d06e0867376 | 292 | RCK=0; //Latch Clock low |
| djbottrill | 0:4d06e0867376 | 293 | |
| djbottrill | 0:4d06e0867376 | 294 | sw1.mode(PullUp); |
| djbottrill | 0:4d06e0867376 | 295 | sw3.mode(PullUp); |
| djbottrill | 15:c1854904f0d7 | 296 | p1.mode(PullUp); |
| djbottrill | 15:c1854904f0d7 | 297 | p2.mode(PullUp); |
| djbottrill | 15:c1854904f0d7 | 298 | p3.mode(PullUp); |
| djbottrill | 15:c1854904f0d7 | 299 | p4.mode(PullUp); |
| djbottrill | 15:c1854904f0d7 | 300 | p5.mode(PullUp); |
| djbottrill | 15:c1854904f0d7 | 301 | |
| djbottrill | 17:7f27f4921305 | 302 | output_ticker.attach(&aout, sample1_rate); //Set Sample frequency |
| djbottrill | 0:4d06e0867376 | 303 | |
| djbottrill | 0:4d06e0867376 | 304 | lcd.cls(); |
| djbottrill | 0:4d06e0867376 | 305 | wait(0.1); |
| djbottrill | 0:4d06e0867376 | 306 | lcd.setCursor(TextLCD::CurOff_BlkOff); |
| djbottrill | 0:4d06e0867376 | 307 | lcd.cls(); |
| djbottrill | 0:4d06e0867376 | 308 | lcd.printf("MIDI Pipe Organ Waiting for USB"); |
| djbottrill | 0:4d06e0867376 | 309 | |
| djbottrill | 0:4d06e0867376 | 310 | NVIC_SetPriority(USB0_IRQn, 99); //Reduce Interrupt priority of USB |
| djbottrill | 0:4d06e0867376 | 311 | |
| djbottrill | 0:4d06e0867376 | 312 | USBMIDI midi; //Start up MIDI |
| djbottrill | 0:4d06e0867376 | 313 | midi.attach(get_message); //callback for MIDI messages received |
| djbottrill | 0:4d06e0867376 | 314 | |
| djbottrill | 0:4d06e0867376 | 315 | lcd.cls(); |
| djbottrill | 0:4d06e0867376 | 316 | lcd.printf("MIDI Pipe Organ"); |
| djbottrill | 0:4d06e0867376 | 317 | wait(1); |
| djbottrill | 0:4d06e0867376 | 318 | lcd.cls(); |
| djbottrill | 0:4d06e0867376 | 319 | lcd.printf("On Chan Note Vel"); |
| djbottrill | 0:4d06e0867376 | 320 | |
| djbottrill | 0:4d06e0867376 | 321 | key=0; |
| djbottrill | 0:4d06e0867376 | 322 | velocity=0; |
| djbottrill | 0:4d06e0867376 | 323 | chan=0; |
| djbottrill | 0:4d06e0867376 | 324 | onoff=0; |
| djbottrill | 0:4d06e0867376 | 325 | |
| djbottrill | 0:4d06e0867376 | 326 | //Main Loop |
| djbottrill | 0:4d06e0867376 | 327 | while(1) { |
| djbottrill | 0:4d06e0867376 | 328 | |
| djbottrill | 11:a27a71f7c149 | 329 | diag2=1; |
| djbottrill | 11:a27a71f7c149 | 330 | //Process notes off |
| djbottrill | 11:a27a71f7c149 | 331 | for (ii=0; ii<16; ii++) { |
| djbottrill | 11:a27a71f7c149 | 332 | if (synthstat[ii]==1 & keybuf[synthtab[ii]]==0) { //Note currently playing |
| djbottrill | 11:a27a71f7c149 | 333 | synthstat[ii]=2; //Set Start decay |
| djbottrill | 11:a27a71f7c149 | 334 | } |
| djbottrill | 11:a27a71f7c149 | 335 | } |
| djbottrill | 11:a27a71f7c149 | 336 | //Process keys on |
| djbottrill | 11:a27a71f7c149 | 337 | //Find a free note generator and start the note playing, if no slots available just ignore the note |
| djbottrill | 12:74b52900cddb | 338 | for (keyidx=95; keyidx>=0; keyidx--) { |
| djbottrill | 15:c1854904f0d7 | 339 | if (keybuf[keyidx]>0 & oldkeybuf[keyidx]==0) { //Key is pressed |
| djbottrill | 12:74b52900cddb | 340 | //Find and use any channel that is free |
| djbottrill | 12:74b52900cddb | 341 | sucess=0; |
| djbottrill | 11:a27a71f7c149 | 342 | ii=0; |
| djbottrill | 11:a27a71f7c149 | 343 | while (ii<16) { //Find available synth channel |
| djbottrill | 11:a27a71f7c149 | 344 | if (synthstat[ii]==0) { //Is synth channel free? |
| djbottrill | 11:a27a71f7c149 | 345 | synthtab[ii]=keyidx; //Store note value |
| djbottrill | 11:a27a71f7c149 | 346 | synthoctave[ii]=synthtab[ii]/12; //Store the octave |
| djbottrill | 16:d2694fb530c3 | 347 | //Uncomment the following lines if you want to wrap around the top octave |
| djbottrill | 16:d2694fb530c3 | 348 | // if (synthoctave[ii]==7) { //Wrap around the top octave |
| djbottrill | 15:c1854904f0d7 | 349 | // synthoctave[ii]--; |
| djbottrill | 15:c1854904f0d7 | 350 | // } |
| djbottrill | 11:a27a71f7c149 | 351 | synthnote[ii]= synthtab[ii]%12; //Note within the octave |
| djbottrill | 11:a27a71f7c149 | 352 | synthstat[ii]=1; //Set status to playing |
| djbottrill | 11:a27a71f7c149 | 353 | synthidx[ii]=freqtab[synthnote[ii]]; //Set the frequency |
| djbottrill | 12:74b52900cddb | 354 | sucess=1; |
| djbottrill | 11:a27a71f7c149 | 355 | ii=16; //exit loop |
| djbottrill | 11:a27a71f7c149 | 356 | } //Next Synth slot |
| djbottrill | 11:a27a71f7c149 | 357 | ii++; |
| djbottrill | 11:a27a71f7c149 | 358 | } |
| djbottrill | 12:74b52900cddb | 359 | //As a last resort find any channel that is in decay |
| djbottrill | 12:74b52900cddb | 360 | if (sucess==0) { |
| djbottrill | 12:74b52900cddb | 361 | ii=0; |
| djbottrill | 15:c1854904f0d7 | 362 | while (ii<16) { //Find available synth channel |
| djbottrill | 15:c1854904f0d7 | 363 | if (synthstat[ii]>1) { //Is synth channel free? |
| djbottrill | 15:c1854904f0d7 | 364 | synthtab[ii]=keyidx; //Store note value |
| djbottrill | 15:c1854904f0d7 | 365 | synthoctave[ii]=synthtab[ii]/12; //Store the octave |
| djbottrill | 15:c1854904f0d7 | 366 | synthnote[ii]= synthtab[ii]%12; //Note within the octave |
| djbottrill | 15:c1854904f0d7 | 367 | synthstat[ii]=1; //Set status to playing |
| djbottrill | 15:c1854904f0d7 | 368 | synthidx[ii]=freqtab[synthnote[ii]]; //Set the frequency |
| djbottrill | 12:74b52900cddb | 369 | sucess=1; |
| djbottrill | 15:c1854904f0d7 | 370 | ii=16; //exit loop |
| djbottrill | 15:c1854904f0d7 | 371 | } //Next Synth slot |
| djbottrill | 12:74b52900cddb | 372 | ii++; |
| djbottrill | 12:74b52900cddb | 373 | } |
| djbottrill | 12:74b52900cddb | 374 | } |
| djbottrill | 11:a27a71f7c149 | 375 | } |
| djbottrill | 12:74b52900cddb | 376 | if (sucess==1) { |
| djbottrill | 16:d2694fb530c3 | 377 | oldkeybuf[keyidx]=keybuf[keyidx]; //Store old value if note sucessfull |
| djbottrill | 12:74b52900cddb | 378 | } |
| djbottrill | 11:a27a71f7c149 | 379 | } |
| djbottrill | 11:a27a71f7c149 | 380 | diag2=0; |
| djbottrill | 11:a27a71f7c149 | 381 | wait_ms(1); |
| djbottrill | 15:c1854904f0d7 | 382 | |
| djbottrill | 15:c1854904f0d7 | 383 | |
| djbottrill | 15:c1854904f0d7 | 384 | //Output to Shift register |
| djbottrill | 15:c1854904f0d7 | 385 | for (keyidx=107; keyidx>11; keyidx--) { |
| djbottrill | 15:c1854904f0d7 | 386 | if (keybuf[keyidx]>0) { |
| djbottrill | 15:c1854904f0d7 | 387 | SER1=1; |
| djbottrill | 15:c1854904f0d7 | 388 | } else { |
| djbottrill | 15:c1854904f0d7 | 389 | SER1=0; |
| djbottrill | 15:c1854904f0d7 | 390 | } |
| djbottrill | 15:c1854904f0d7 | 391 | SRCK=1; //Pulse Serial clock |
| djbottrill | 15:c1854904f0d7 | 392 | wait_us(4); |
| djbottrill | 15:c1854904f0d7 | 393 | SRCK=0; |
| djbottrill | 15:c1854904f0d7 | 394 | wait_us(4); |
| djbottrill | 15:c1854904f0d7 | 395 | } //Next bit |
| djbottrill | 15:c1854904f0d7 | 396 | |
| djbottrill | 15:c1854904f0d7 | 397 | RCK=1; //Transfer data to outputs |
| djbottrill | 15:c1854904f0d7 | 398 | wait_us(4); |
| djbottrill | 15:c1854904f0d7 | 399 | RCK=0; |
| djbottrill | 15:c1854904f0d7 | 400 | wait_us(4); |
| djbottrill | 15:c1854904f0d7 | 401 | |
| djbottrill | 16:d2694fb530c3 | 402 | //Read Stop inputs |
| djbottrill | 16:d2694fb530c3 | 403 | stops[0]=p1; |
| djbottrill | 16:d2694fb530c3 | 404 | stops[1]=p2; |
| djbottrill | 16:d2694fb530c3 | 405 | stops[2]=p3; |
| djbottrill | 16:d2694fb530c3 | 406 | stops[3]=p4; |
| djbottrill | 16:d2694fb530c3 | 407 | stops[4]=p5; |
| djbottrill | 15:c1854904f0d7 | 408 | |
| djbottrill | 16:d2694fb530c3 | 409 | //Additional code to de-bounce the K64F onboard switches again using multiple loops to de-bounce; has 3 states: |
| djbottrill | 16:d2694fb530c3 | 410 | //0 - Button not pressed |
| djbottrill | 16:d2694fb530c3 | 411 | //1 - Button pressed waiting for de-bounce count of 10 loops |
| djbottrill | 16:d2694fb530c3 | 412 | //2 - Button press stable, this status can be read as the de-bounced status indicating the button press is clean |
| djbottrill | 16:d2694fb530c3 | 413 | |
| djbottrill | 6:073e10217962 | 414 | // De-bounce SW1 |
| djbottrill | 9:b0f110c02b1b | 415 | if (sw1_phase==0 & sw1==0) { //Button just been pressed |
| djbottrill | 6:073e10217962 | 416 | sw1_phase=1; |
| djbottrill | 6:073e10217962 | 417 | sw1_count=10; |
| djbottrill | 6:073e10217962 | 418 | } |
| djbottrill | 9:b0f110c02b1b | 419 | if (sw1_phase==1 & sw1_count==0 & sw1==0) { //Button still pressed after de-bounce period |
| djbottrill | 6:073e10217962 | 420 | sw1_phase=2; |
| djbottrill | 6:073e10217962 | 421 | } |
| djbottrill | 9:b0f110c02b1b | 422 | if (sw1_phase==2 & sw1==1) { //Button released |
| djbottrill | 6:073e10217962 | 423 | sw1_phase=0; |
| djbottrill | 6:073e10217962 | 424 | } |
| djbottrill | 6:073e10217962 | 425 | sw1_count--; |
| djbottrill | 15:c1854904f0d7 | 426 | // De-bounce SW3 |
| djbottrill | 9:b0f110c02b1b | 427 | if (sw3_phase==0 & sw3==0) { //Button just been pressed |
| djbottrill | 7:e1ea1623c6c2 | 428 | sw3_phase=1; |
| djbottrill | 7:e1ea1623c6c2 | 429 | sw3_count=10; |
| djbottrill | 7:e1ea1623c6c2 | 430 | } |
| djbottrill | 9:b0f110c02b1b | 431 | if (sw3_phase==1 & sw3_count==0 & sw3==0) { //Button still pressed after de-bounce period |
| djbottrill | 7:e1ea1623c6c2 | 432 | sw3_phase=2; |
| djbottrill | 7:e1ea1623c6c2 | 433 | } |
| djbottrill | 6:073e10217962 | 434 | |
| djbottrill | 9:b0f110c02b1b | 435 | if (sw3_phase==2 & sw3==1) { //Button released |
| djbottrill | 7:e1ea1623c6c2 | 436 | sw3_phase=0; |
| djbottrill | 7:e1ea1623c6c2 | 437 | } |
| djbottrill | 7:e1ea1623c6c2 | 438 | sw3_count--; |
| djbottrill | 6:073e10217962 | 439 | |
| djbottrill | 0:4d06e0867376 | 440 | if (sw1_phase==2 | sw3_phase==2) { |
| djbottrill | 0:4d06e0867376 | 441 | blueled=0; |
| djbottrill | 0:4d06e0867376 | 442 | } else { |
| djbottrill | 0:4d06e0867376 | 443 | blueled=1; |
| djbottrill | 0:4d06e0867376 | 444 | } |
| djbottrill | 0:4d06e0867376 | 445 | |
| djbottrill | 0:4d06e0867376 | 446 | |
| djbottrill | 17:7f27f4921305 | 447 | //Button 1 will clear all playing notes & switch sampleset |
| djbottrill | 9:b0f110c02b1b | 448 | if (sw1_phase != sw1_old) { |
| djbottrill | 9:b0f110c02b1b | 449 | if(sw1_phase==2) { |
| djbottrill | 9:b0f110c02b1b | 450 | for (cl=0; cl<108; cl++) { |
| djbottrill | 17:7f27f4921305 | 451 | keybuf[cl]=0; //Clear Keybuf |
| djbottrill | 17:7f27f4921305 | 452 | } |
| djbottrill | 17:7f27f4921305 | 453 | sampleset++; |
| djbottrill | 17:7f27f4921305 | 454 | oldstops=255; //Force a display refresh |
| djbottrill | 17:7f27f4921305 | 455 | if (sampleset>1) { |
| djbottrill | 17:7f27f4921305 | 456 | sampleset=0; |
| djbottrill | 9:b0f110c02b1b | 457 | } |
| djbottrill | 9:b0f110c02b1b | 458 | } |
| djbottrill | 9:b0f110c02b1b | 459 | } |
| djbottrill | 17:7f27f4921305 | 460 | sw1_old=sw1_phase; |
| djbottrill | 17:7f27f4921305 | 461 | |
| djbottrill | 0:4d06e0867376 | 462 | //Check for display mode button being presed |
| djbottrill | 17:7f27f4921305 | 463 | if (sw3_phase != sw3_old) { //Mode Switch pressed |
| djbottrill | 0:4d06e0867376 | 464 | if(sw3_phase==2) { |
| djbottrill | 0:4d06e0867376 | 465 | lcdmode++; |
| djbottrill | 16:d2694fb530c3 | 466 | if (lcdmode>4) { |
| djbottrill | 0:4d06e0867376 | 467 | lcdmode=0; |
| djbottrill | 0:4d06e0867376 | 468 | } |
| djbottrill | 0:4d06e0867376 | 469 | lcd.cls(); |
| djbottrill | 0:4d06e0867376 | 470 | if (lcdmode==0) { |
| djbottrill | 0:4d06e0867376 | 471 | lcd.printf("On Chan Note Vel"); |
| djbottrill | 0:4d06e0867376 | 472 | } |
| djbottrill | 0:4d06e0867376 | 473 | if (lcdmode==1) { |
| djbottrill | 0:4d06e0867376 | 474 | //Initialise bar graph display |
| djbottrill | 10:fa2dee836ceb | 475 | //Program user defined characters into OLED display for bar graph |
| djbottrill | 10:fa2dee836ceb | 476 | lcd.setUDC(0, (char *) udc0); |
| djbottrill | 10:fa2dee836ceb | 477 | lcd.setUDC(1, (char *) udc1); |
| djbottrill | 10:fa2dee836ceb | 478 | lcd.setUDC(2, (char *) udc2); |
| djbottrill | 10:fa2dee836ceb | 479 | lcd.setUDC(3, (char *) udc3); |
| djbottrill | 10:fa2dee836ceb | 480 | lcd.setUDC(4, (char *) udc4); |
| djbottrill | 10:fa2dee836ceb | 481 | lcd.setUDC(5, (char *) udc5); |
| djbottrill | 10:fa2dee836ceb | 482 | lcd.setUDC(6, (char *) udc6); |
| djbottrill | 10:fa2dee836ceb | 483 | lcd.setUDC(7, (char *) udc7); |
| djbottrill | 0:4d06e0867376 | 484 | for (row=0; row<2; row++) { |
| djbottrill | 0:4d06e0867376 | 485 | for (pos=0; pos<16; pos++) { |
| djbottrill | 0:4d06e0867376 | 486 | display[row][pos]=0; |
| djbottrill | 0:4d06e0867376 | 487 | display_old[row][pos]=1; |
| djbottrill | 0:4d06e0867376 | 488 | } |
| djbottrill | 0:4d06e0867376 | 489 | } |
| djbottrill | 0:4d06e0867376 | 490 | } |
| djbottrill | 0:4d06e0867376 | 491 | if (lcdmode==2) { |
| djbottrill | 0:4d06e0867376 | 492 | lcd.locate(0,1); |
| djbottrill | 0:4d06e0867376 | 493 | lcd.printf("0123456789ABCDEF"); |
| djbottrill | 0:4d06e0867376 | 494 | } |
| djbottrill | 8:df5f305aab22 | 495 | if (lcdmode==3) { |
| djbottrill | 8:df5f305aab22 | 496 | lcd.cls(); |
| djbottrill | 8:df5f305aab22 | 497 | lcd.locate(0,0); |
| djbottrill | 8:df5f305aab22 | 498 | lcd.printf("Utilisation:"); |
| djbottrill | 8:df5f305aab22 | 499 | } |
| djbottrill | 16:d2694fb530c3 | 500 | if (lcdmode==4) { |
| djbottrill | 16:d2694fb530c3 | 501 | oldstops=255; //Force a refresh |
| djbottrill | 16:d2694fb530c3 | 502 | } |
| djbottrill | 0:4d06e0867376 | 503 | } |
| djbottrill | 0:4d06e0867376 | 504 | } |
| djbottrill | 0:4d06e0867376 | 505 | sw3_old=sw3_phase; |
| djbottrill | 0:4d06e0867376 | 506 | |
| djbottrill | 0:4d06e0867376 | 507 | |
| djbottrill | 0:4d06e0867376 | 508 | |
| djbottrill | 0:4d06e0867376 | 509 | // OLED MIDI Status display |
| djbottrill | 0:4d06e0867376 | 510 | if (lcdmode==0) { |
| djbottrill | 0:4d06e0867376 | 511 | lcd_stat=key+(128*velocity)+(16384*chan)+(262144*onoff); |
| djbottrill | 0:4d06e0867376 | 512 | if (lcd_stat!=lcd_stat_old) { |
| djbottrill | 0:4d06e0867376 | 513 | |
| djbottrill | 0:4d06e0867376 | 514 | lcd.locate(0,1); |
| djbottrill | 0:4d06e0867376 | 515 | lcd.printf("%1d %2d %3d %3d", onoff, chan, key, velocity); |
| djbottrill | 0:4d06e0867376 | 516 | lcd_stat_old=lcd_stat; |
| djbottrill | 0:4d06e0867376 | 517 | } |
| djbottrill | 0:4d06e0867376 | 518 | } |
| djbottrill | 0:4d06e0867376 | 519 | |
| djbottrill | 0:4d06e0867376 | 520 | // OLED MIDI Bar Display |
| djbottrill | 0:4d06e0867376 | 521 | if (lcdmode==1) { |
| djbottrill | 0:4d06e0867376 | 522 | keyidx=0; |
| djbottrill | 0:4d06e0867376 | 523 | for (row=1; row>=0; row--) { |
| djbottrill | 0:4d06e0867376 | 524 | for (pos=0; pos<16; pos++) { |
| djbottrill | 0:4d06e0867376 | 525 | keyidx_t=keyidx*2; |
| djbottrill | 0:4d06e0867376 | 526 | if(keyidx_t>94) { |
| djbottrill | 0:4d06e0867376 | 527 | keyidx_t=keyidx_t-95; |
| djbottrill | 0:4d06e0867376 | 528 | } |
| djbottrill | 15:c1854904f0d7 | 529 | tval=keybuf[keyidx_t]; |
| djbottrill | 12:74b52900cddb | 530 | if(tval>0) { |
| djbottrill | 12:74b52900cddb | 531 | tval=1; |
| djbottrill | 12:74b52900cddb | 532 | } |
| djbottrill | 0:4d06e0867376 | 533 | keyidx++; |
| djbottrill | 0:4d06e0867376 | 534 | keyidx_t=keyidx*2; |
| djbottrill | 0:4d06e0867376 | 535 | if(keyidx_t>94) { |
| djbottrill | 0:4d06e0867376 | 536 | keyidx_t=keyidx_t-95; |
| djbottrill | 0:4d06e0867376 | 537 | } |
| djbottrill | 15:c1854904f0d7 | 538 | tval1=keybuf[keyidx_t]; |
| djbottrill | 12:74b52900cddb | 539 | if (tval1>0) { |
| djbottrill | 12:74b52900cddb | 540 | tval1=1; |
| djbottrill | 12:74b52900cddb | 541 | } |
| djbottrill | 12:74b52900cddb | 542 | tval=tval+(2*tval1); |
| djbottrill | 0:4d06e0867376 | 543 | keyidx++; |
| djbottrill | 0:4d06e0867376 | 544 | |
| djbottrill | 0:4d06e0867376 | 545 | keyidx_t=keyidx*2; |
| djbottrill | 0:4d06e0867376 | 546 | if(keyidx_t>94) { |
| djbottrill | 0:4d06e0867376 | 547 | keyidx_t=keyidx_t-95; |
| djbottrill | 0:4d06e0867376 | 548 | } |
| djbottrill | 15:c1854904f0d7 | 549 | tval1=keybuf[keyidx_t]; |
| djbottrill | 12:74b52900cddb | 550 | if (tval1>0) { |
| djbottrill | 12:74b52900cddb | 551 | tval1=1; |
| djbottrill | 12:74b52900cddb | 552 | } |
| djbottrill | 12:74b52900cddb | 553 | tval=tval+(4*tval1); |
| djbottrill | 0:4d06e0867376 | 554 | keyidx++; |
| djbottrill | 0:4d06e0867376 | 555 | display[row][pos]=tval; |
| djbottrill | 0:4d06e0867376 | 556 | |
| djbottrill | 0:4d06e0867376 | 557 | if(display[row][pos]!=display_old[row][pos]) { |
| djbottrill | 0:4d06e0867376 | 558 | lcd.locate(pos,row); |
| djbottrill | 0:4d06e0867376 | 559 | lcd.putc(display[row][pos]); |
| djbottrill | 0:4d06e0867376 | 560 | display_old[row][pos]=display[row][pos]; |
| djbottrill | 0:4d06e0867376 | 561 | } |
| djbottrill | 0:4d06e0867376 | 562 | } |
| djbottrill | 0:4d06e0867376 | 563 | } |
| djbottrill | 0:4d06e0867376 | 564 | } |
| djbottrill | 0:4d06e0867376 | 565 | |
| djbottrill | 0:4d06e0867376 | 566 | //Display status of the Synth channels |
| djbottrill | 0:4d06e0867376 | 567 | if (lcdmode==2) { |
| djbottrill | 0:4d06e0867376 | 568 | lcd.locate(0,0); |
| djbottrill | 0:4d06e0867376 | 569 | for (noteidx=0; noteidx<16; noteidx++) { |
| djbottrill | 0:4d06e0867376 | 570 | lcd.putc((synthstat[noteidx]+48)); |
| djbottrill | 0:4d06e0867376 | 571 | } |
| djbottrill | 0:4d06e0867376 | 572 | } |
| djbottrill | 4:9f63e68b548e | 573 | |
| djbottrill | 8:df5f305aab22 | 574 | //Display utilisation bar graph |
| djbottrill | 8:df5f305aab22 | 575 | if (lcdmode==3) { |
| djbottrill | 8:df5f305aab22 | 576 | x=0; |
| djbottrill | 8:df5f305aab22 | 577 | for (noteidx=0; noteidx<16; noteidx++) { |
| djbottrill | 8:df5f305aab22 | 578 | if (synthstat[noteidx] >0) { |
| djbottrill | 8:df5f305aab22 | 579 | x++; |
| djbottrill | 8:df5f305aab22 | 580 | } |
| djbottrill | 8:df5f305aab22 | 581 | } |
| djbottrill | 8:df5f305aab22 | 582 | for (pos=0; pos<x; pos++) { |
| djbottrill | 8:df5f305aab22 | 583 | display[1][pos]=0xff; |
| djbottrill | 8:df5f305aab22 | 584 | } |
| djbottrill | 8:df5f305aab22 | 585 | while(pos<16) { |
| djbottrill | 8:df5f305aab22 | 586 | display[1][pos]=0x20; |
| djbottrill | 8:df5f305aab22 | 587 | pos++; |
| djbottrill | 8:df5f305aab22 | 588 | } |
| djbottrill | 8:df5f305aab22 | 589 | row=1; |
| djbottrill | 8:df5f305aab22 | 590 | for (pos=0; pos<16; pos++) { |
| djbottrill | 8:df5f305aab22 | 591 | if (x!=x1) { |
| djbottrill | 8:df5f305aab22 | 592 | lcd.locate(13,0); |
| djbottrill | 8:df5f305aab22 | 593 | lcd.printf("%2d", x); |
| djbottrill | 8:df5f305aab22 | 594 | x1=x; |
| djbottrill | 8:df5f305aab22 | 595 | } |
| djbottrill | 8:df5f305aab22 | 596 | if(display[row][pos]!=display_old[row][pos]) { |
| djbottrill | 8:df5f305aab22 | 597 | lcd.locate(pos,row); |
| djbottrill | 8:df5f305aab22 | 598 | lcd.putc(display[row][pos]); |
| djbottrill | 8:df5f305aab22 | 599 | display_old[row][pos]=display[row][pos]; |
| djbottrill | 8:df5f305aab22 | 600 | } |
| djbottrill | 8:df5f305aab22 | 601 | } |
| djbottrill | 8:df5f305aab22 | 602 | } |
| djbottrill | 16:d2694fb530c3 | 603 | //Stop display |
| djbottrill | 16:d2694fb530c3 | 604 | if (lcdmode==4) { |
| djbottrill | 8:df5f305aab22 | 605 | |
| djbottrill | 16:d2694fb530c3 | 606 | pos=stops[0] + stops[1]+stops[2]+stops[3]+stops[4]; |
| djbottrill | 16:d2694fb530c3 | 607 | if (oldstops != pos) { |
| djbottrill | 17:7f27f4921305 | 608 | oldstops=pos; |
| djbottrill | 16:d2694fb530c3 | 609 | lcd.cls(); |
| djbottrill | 16:d2694fb530c3 | 610 | for (pos=0; pos<16; pos++) { |
| djbottrill | 16:d2694fb530c3 | 611 | lcd.locate(pos,0); |
| djbottrill | 17:7f27f4921305 | 612 | if (sampleset==0) { |
| djbottrill | 17:7f27f4921305 | 613 | lcd.putc(stopname1[pos]); |
| djbottrill | 17:7f27f4921305 | 614 | } else { |
| djbottrill | 17:7f27f4921305 | 615 | lcd.putc(stopname2[pos]); |
| djbottrill | 17:7f27f4921305 | 616 | } |
| djbottrill | 16:d2694fb530c3 | 617 | } |
| djbottrill | 16:d2694fb530c3 | 618 | lcd.locate(0,1); |
| djbottrill | 16:d2694fb530c3 | 619 | if (stops[0]==0) { |
| djbottrill | 16:d2694fb530c3 | 620 | lcd.printf("16 "); |
| djbottrill | 16:d2694fb530c3 | 621 | } |
| djbottrill | 16:d2694fb530c3 | 622 | |
| djbottrill | 16:d2694fb530c3 | 623 | if (stops[1]==0) { |
| djbottrill | 16:d2694fb530c3 | 624 | lcd.printf("8 "); |
| djbottrill | 16:d2694fb530c3 | 625 | } |
| djbottrill | 16:d2694fb530c3 | 626 | |
| djbottrill | 16:d2694fb530c3 | 627 | if (stops[2]==0) { |
| djbottrill | 16:d2694fb530c3 | 628 | lcd.printf("4 "); |
| djbottrill | 16:d2694fb530c3 | 629 | } |
| djbottrill | 16:d2694fb530c3 | 630 | |
| djbottrill | 16:d2694fb530c3 | 631 | if (stops[3]==0) { |
| djbottrill | 16:d2694fb530c3 | 632 | lcd.printf("2-2/3 "); |
| djbottrill | 16:d2694fb530c3 | 633 | } |
| djbottrill | 16:d2694fb530c3 | 634 | |
| djbottrill | 16:d2694fb530c3 | 635 | if (stops[4]==0) { |
| djbottrill | 16:d2694fb530c3 | 636 | lcd.printf("2"); |
| djbottrill | 16:d2694fb530c3 | 637 | } |
| djbottrill | 16:d2694fb530c3 | 638 | } |
| djbottrill | 16:d2694fb530c3 | 639 | } |
| djbottrill | 8:df5f305aab22 | 640 | |
| djbottrill | 0:4d06e0867376 | 641 | } //End of main loop |
| djbottrill | 0:4d06e0867376 | 642 | } //End of program |
| djbottrill | 0:4d06e0867376 | 643 | |
| djbottrill | 0:4d06e0867376 | 644 | |
| djbottrill | 0:4d06e0867376 | 645 | |
| djbottrill | 0:4d06e0867376 | 646 |