Yossi_Students / Mbed 2 deprecated TAU_ReSpeaker_DSP_V01

Tau ReSpeaker Setup V01

Dependencies:   MbedJSONValue mbed

Fork of TAU_ReSpeaker_DSP_Test by Yossi_Students

main.cpp@4:59319802012b, 2018-02-19 (annotated)

Committer:
Arkadi
Date:
Mon Feb 19 15:14:44 2018 +0000
Revision:
4:59319802012b
Parent:
3:48258b86e182
Child:
5:ec6f2323a263
Updated operation modes, code optimisations,

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Arkadi 0:bfac05b2d50f 1 ////////////////////////////////////////
Arkadi 1:574b54755983 2 // Tau_ReSpeaker_DSP V01 //
Arkadi 1:574b54755983 3 // Arkadiraf@gmail.com - 11/02/2018 //
Arkadi 0:bfac05b2d50f 4 ////////////////////////////////////////
Arkadi 0:bfac05b2d50f 5 /*
Arkadi 2:59c1a24aed7c 6 Json Format: json:{"name":"dsp","filter":"none","mode":"off"}\r\n
Arkadi 2:59c1a24aed7c 7 */
Arkadi 1:574b54755983 8
Arkadi 3:48258b86e182 9
Arkadi 0:bfac05b2d50f 10
Arkadi 0:bfac05b2d50f 11 /*
Arkadi 0:bfac05b2d50f 12 Board : Nucleo STM32F446RE
Arkadi 0:bfac05b2d50f 13 Power Source : USB
Arkadi 0:bfac05b2d50f 14 */
Arkadi 0:bfac05b2d50f 15
Arkadi 0:bfac05b2d50f 16 /*
Arkadi 0:bfac05b2d50f 17 Pinout:
Arkadi 0:bfac05b2d50f 18 PC - Serial 2
Arkadi 0:bfac05b2d50f 19 PA_2 (Tx) --> STLINK
Arkadi 0:bfac05b2d50f 20 PA_3 (Rx) --> STLINK
Arkadi 0:bfac05b2d50f 21
Arkadi 0:bfac05b2d50f 22 Switch - Serial 3
Arkadi 0:bfac05b2d50f 23 PC_10 (Tx) --> SW_Rx
Arkadi 0:bfac05b2d50f 24 PC_11 (Rx) --> SW_Tx
Arkadi 0:bfac05b2d50f 25
Arkadi 0:bfac05b2d50f 26 I2C_Bus
Arkadi 0:bfac05b2d50f 27 PB_8 --> SCL
Arkadi 0:bfac05b2d50f 28 PB_9 --> SDA
Arkadi 0:bfac05b2d50f 29
Arkadi 0:bfac05b2d50f 30 Digital output
Arkadi 0:bfac05b2d50f 31 PA_5 --> led (DigitalOut)
Arkadi 0:bfac05b2d50f 32
Arkadi 0:bfac05b2d50f 33 Digital Input
Arkadi 0:bfac05b2d50f 34 PA_10 --> SW_Trigger
Arkadi 0:bfac05b2d50f 35 PC_13 --> BTN (Blue)
Arkadi 0:bfac05b2d50f 36
Arkadi 1:574b54755983 37 PA_6 --> Toggle Pin (Loop Freq D12)
Arkadi 1:574b54755983 38
Arkadi 0:bfac05b2d50f 39 Analog Input
Arkadi 1:574b54755983 40 PA_0 --> SIG_IN_DSP (A0)
Arkadi 0:bfac05b2d50f 41
Arkadi 0:bfac05b2d50f 42 Analog Output
Arkadi 1:574b54755983 43 PA_4 --> SIG_OUT_DSP (A2)
Arkadi 0:bfac05b2d50f 44
Arkadi 0:bfac05b2d50f 45 */
Arkadi 0:bfac05b2d50f 46
Arkadi 0:bfac05b2d50f 47 ///////////////
Arkadi 0:bfac05b2d50f 48 // Libraries //
Arkadi 0:bfac05b2d50f 49 ///////////////
Arkadi 0:bfac05b2d50f 50 #include "mbed.h"
Arkadi 1:574b54755983 51 #include "MbedJSONValue.h"
Arkadi 0:bfac05b2d50f 52
Arkadi 0:bfac05b2d50f 53 ///////////////
Arkadi 0:bfac05b2d50f 54 // #defines //
Arkadi 0:bfac05b2d50f 55 ///////////////
Arkadi 1:574b54755983 56 // UART debug modes:
Arkadi 1:574b54755983 57 //#define DEBUG_MOD1 // json packet recognise
Arkadi 1:574b54755983 58 #define DEBUG_MOD2 // json parse
Arkadi 1:574b54755983 59 #define DEBUG_MOD3 // dsp handler
Arkadi 1:574b54755983 60 #define DEBUG_MOD10 // responsivity msges to gui
Arkadi 3:48258b86e182 61 #define DEBUG_MOD11 // loop frequency indicator
Arkadi 0:bfac05b2d50f 62
Arkadi 0:bfac05b2d50f 63 // Sine generator
Arkadi 1:574b54755983 64 #define PI_DOUBLE (3.141592653589793238462)
Arkadi 1:574b54755983 65 #define PI_FLOAT (3.14159f)
Arkadi 1:574b54755983 66
Arkadi 1:574b54755983 67 // json commad
Arkadi 1:574b54755983 68 #define MSG_BUFFER_SIZE 512
Arkadi 1:574b54755983 69 #define HEADER_SIZE 5
Arkadi 1:574b54755983 70 #define FOOTER_SIZE 2
Arkadi 0:bfac05b2d50f 71
Arkadi 0:bfac05b2d50f 72 /////////////
Arkadi 0:bfac05b2d50f 73 // Objects //
Arkadi 0:bfac05b2d50f 74 /////////////
Arkadi 1:574b54755983 75 // json
Arkadi 1:574b54755983 76 MbedJSONValue guiCmd;
Arkadi 0:bfac05b2d50f 77
Arkadi 0:bfac05b2d50f 78 // uart
Arkadi 1:574b54755983 79 Serial pc(USBTX, USBRX);
Arkadi 0:bfac05b2d50f 80
Arkadi 2:59c1a24aed7c 81 // uart switch_dsp
Arkadi 2:59c1a24aed7c 82 Serial switch_dsp(PC_10, PC_11);
Arkadi 2:59c1a24aed7c 83
Arkadi 0:bfac05b2d50f 84 // digital
Arkadi 0:bfac05b2d50f 85 DigitalIn user_button(PC_13);
Arkadi 0:bfac05b2d50f 86 DigitalIn sw_trigger(PA_10);
Arkadi 0:bfac05b2d50f 87 DigitalOut led(PA_5);
Arkadi 1:574b54755983 88 DigitalOut mytoggle(PA_6);
Arkadi 0:bfac05b2d50f 89
Arkadi 1:574b54755983 90 // analog / define to init at mbed initialization. work directly with registers
Arkadi 0:bfac05b2d50f 91 AnalogOut dsp_output(PA_4);
Arkadi 0:bfac05b2d50f 92 AnalogIn dsp_input(PA_0);
Arkadi 0:bfac05b2d50f 93
Arkadi 1:574b54755983 94
Arkadi 1:574b54755983 95 // ADC/DAC declarations
Arkadi 1:574b54755983 96 ADC_HandleTypeDef hadc1;
Arkadi 1:574b54755983 97 DAC_HandleTypeDef hdac1;
Arkadi 1:574b54755983 98
Arkadi 0:bfac05b2d50f 99 ///////////////
Arkadi 0:bfac05b2d50f 100 // variables //
Arkadi 0:bfac05b2d50f 101 ///////////////
Arkadi 0:bfac05b2d50f 102
Arkadi 1:574b54755983 103 // json buffer
Arkadi 1:574b54755983 104 char json[MSG_BUFFER_SIZE];
Arkadi 1:574b54755983 105
Arkadi 1:574b54755983 106 // packet variables
Arkadi 1:574b54755983 107 struct packetMSG_struct {
Arkadi 1:574b54755983 108 // recieve message variables
Arkadi 1:574b54755983 109 uint8_t header[HEADER_SIZE];
Arkadi 1:574b54755983 110 uint8_t footer[FOOTER_SIZE];
Arkadi 1:574b54755983 111 uint8_t syncIndex; // sync index for header / footer
Arkadi 1:574b54755983 112 uint8_t syncFlag; // 0 - waiting for header, 1 - waiting for footer, 2 - verify footer, 3 - finish footer send to parser, flash buffer
Arkadi 1:574b54755983 113 // buffer
Arkadi 1:574b54755983 114 uint16_t bufferIndex; // buffer index
Arkadi 1:574b54755983 115 uint8_t buffer[MSG_BUFFER_SIZE];
Arkadi 1:574b54755983 116 } ;
Arkadi 1:574b54755983 117 packetMSG_struct packetMSG;
Arkadi 1:574b54755983 118
Arkadi 1:574b54755983 119
Arkadi 1:574b54755983 120 // Dac Register for direct method of setting DAC value`s
Arkadi 1:574b54755983 121 __IO uint32_t Dac_Reg = 0;
Arkadi 1:574b54755983 122
Arkadi 0:bfac05b2d50f 123 // analog input
Arkadi 0:bfac05b2d50f 124 uint16_t adc_in=0;
Arkadi 0:bfac05b2d50f 125
Arkadi 1:574b54755983 126 // toogle pin state
Arkadi 1:574b54755983 127 bool toggelState=0;
Arkadi 1:574b54755983 128
Arkadi 1:574b54755983 129 // create function pointer
Arkadi 1:574b54755983 130 typedef void(*functionPtr)(void);
Arkadi 1:574b54755983 131 functionPtr FilterFunction;
Arkadi 1:574b54755983 132
Arkadi 3:48258b86e182 133 // alternative functuin selection (faster mcu process)
Arkadi 4:59319802012b 134 volatile uint8_t operationMode = 0;
Arkadi 4:59319802012b 135 // 0 - off
Arkadi 4:59319802012b 136 // 1 - passthrough - no filter
Arkadi 4:59319802012b 137 // 2 - highpass - High Pass filter
Arkadi 4:59319802012b 138 // 3 - hpf_trig - High Pass filter + Trigger mode
Arkadi 3:48258b86e182 139
Arkadi 0:bfac05b2d50f 140 ///////////////
Arkadi 0:bfac05b2d50f 141 // Functions //
Arkadi 0:bfac05b2d50f 142 ///////////////
Arkadi 0:bfac05b2d50f 143
Arkadi 1:574b54755983 144 // init functions header //hadc1 needs to be defined preiod #incude
Arkadi 1:574b54755983 145 #include "adc_init.h" // initialize adc/dac directly for continious sample
Arkadi 1:574b54755983 146 #include "filters.h"
Arkadi 1:574b54755983 147
Arkadi 1:574b54755983 148 // nop operation
Arkadi 1:574b54755983 149 inline void NOP()
Arkadi 1:574b54755983 150 {
Arkadi 1:574b54755983 151 __ASM volatile ("nop"); // one tick operation, Use to adjust frequency by slowing down the proccess
Arkadi 1:574b54755983 152 }
Arkadi 1:574b54755983 153
Arkadi 1:574b54755983 154 // Serial Event function
Arkadi 1:574b54755983 155 void rxCallback(void);
Arkadi 1:574b54755983 156
Arkadi 1:574b54755983 157 // initialize packet struct
Arkadi 1:574b54755983 158 void initPacket(void);
Arkadi 1:574b54755983 159
Arkadi 1:574b54755983 160 // Packet Parser
Arkadi 1:574b54755983 161 void parsePacket(void);
Arkadi 1:574b54755983 162
Arkadi 1:574b54755983 163 // DSP Packet Handler
Arkadi 1:574b54755983 164 void dspPacket(void);
Arkadi 1:574b54755983 165
Arkadi 1:574b54755983 166 // initialize DSP
Arkadi 1:574b54755983 167 void initDSP(void);
Arkadi 0:bfac05b2d50f 168
Arkadi 0:bfac05b2d50f 169 ////////////////////////
Arkadi 0:bfac05b2d50f 170 // Main Code Setup : //
Arkadi 0:bfac05b2d50f 171 ////////////////////////
Arkadi 0:bfac05b2d50f 172 int main()
Arkadi 0:bfac05b2d50f 173 {
Arkadi 1:574b54755983 174 // init packet:
Arkadi 1:574b54755983 175 initPacket();
Arkadi 1:574b54755983 176
Arkadi 1:574b54755983 177 // initialize DSP
Arkadi 1:574b54755983 178 initDSP();
Arkadi 1:574b54755983 179
Arkadi 0:bfac05b2d50f 180 pc.baud(57600);
Arkadi 2:59c1a24aed7c 181 switch_dsp.baud(57600);
Arkadi 2:59c1a24aed7c 182
Arkadi 2:59c1a24aed7c 183
Arkadi 2:59c1a24aed7c 184 // pc is used for debbuging, in application mode the commands are from the switch_dsp.
Arkadi 1:574b54755983 185 // attach serial event interrupt
Arkadi 1:574b54755983 186 pc.attach(&rxCallback, Serial::RxIrq);
Arkadi 2:59c1a24aed7c 187
Arkadi 2:59c1a24aed7c 188 // attach serial event interrupt
Arkadi 2:59c1a24aed7c 189 switch_dsp.attach(&rxCallback, Serial::RxIrq);
Arkadi 2:59c1a24aed7c 190
Arkadi 0:bfac05b2d50f 191 #ifdef DEBUG_MOD1
Arkadi 0:bfac05b2d50f 192 pc.printf("ReSpeaker Test \r\n");
Arkadi 0:bfac05b2d50f 193 #endif
Arkadi 0:bfac05b2d50f 194
Arkadi 0:bfac05b2d50f 195 ///////////////////////
Arkadi 0:bfac05b2d50f 196 // Main Code Loop : //
Arkadi 0:bfac05b2d50f 197 ///////////////////////
Arkadi 0:bfac05b2d50f 198 while(1) {
Arkadi 1:574b54755983 199 // run selected filter
Arkadi 3:48258b86e182 200 if (operationMode == 0) {
Arkadi 4:59319802012b 201 offMode();
Arkadi 3:48258b86e182 202 } else if (operationMode == 1) {
Arkadi 4:59319802012b 203 passthrough();
Arkadi 4:59319802012b 204 } else if (operationMode == 2) {
Arkadi 4:59319802012b 205 highpass();
Arkadi 4:59319802012b 206 } else if (operationMode == 3) {
Arkadi 4:59319802012b 207 highpassTrig();
Arkadi 3:48258b86e182 208 }
Arkadi 4:59319802012b 209 //highpass_filter();
Arkadi 3:48258b86e182 210 // more elegant but much slower option:
Arkadi 3:48258b86e182 211 //FilterFunction();
Arkadi 1:574b54755983 212 #ifdef DEBUG_MOD11
Arkadi 1:574b54755983 213 // toggle pin, Loop frequency indicator
Arkadi 1:574b54755983 214 toggelState=!toggelState;
Arkadi 1:574b54755983 215 mytoggle.write(toggelState);
Arkadi 1:574b54755983 216 #endif
Arkadi 3:48258b86e182 217 } // end loop
Arkadi 3:48258b86e182 218 } // end main
Arkadi 0:bfac05b2d50f 219
Arkadi 0:bfac05b2d50f 220 ///////////////
Arkadi 0:bfac05b2d50f 221 // Functions //
Arkadi 0:bfac05b2d50f 222 ///////////////
Arkadi 0:bfac05b2d50f 223
Arkadi 1:574b54755983 224 // initialize DSP
Arkadi 1:574b54755983 225 void initDSP(void)
Arkadi 1:574b54755983 226 {
Arkadi 1:574b54755983 227 // init dac
Arkadi 1:574b54755983 228 ADC1_Init();
Arkadi 1:574b54755983 229 DAC1_Init();
Arkadi 1:574b54755983 230
Arkadi 1:574b54755983 231 HAL_ADC_Start(&hadc1);
Arkadi 1:574b54755983 232 HAL_DAC_Start(&hdac1, DAC_CHANNEL_1);
Arkadi 1:574b54755983 233
Arkadi 1:574b54755983 234 // define Dac Register for direct method of setting DAC value`s
Arkadi 1:574b54755983 235 Dac_Reg = (uint32_t) (hdac1.Instance);
Arkadi 1:574b54755983 236 Dac_Reg += __HAL_DHR12R1_ALIGNEMENT(DAC_ALIGN_12B_R);
Arkadi 1:574b54755983 237
Arkadi 1:574b54755983 238 // intialize filter function pointer
Arkadi 4:59319802012b 239 FilterFunction = offMode;//highpass_filter;
Arkadi 3:48258b86e182 240 operationMode = 0 ;
Arkadi 1:574b54755983 241 }
Arkadi 1:574b54755983 242
Arkadi 1:574b54755983 243 // Serial Event function
Arkadi 1:574b54755983 244 void rxCallback(void)
Arkadi 0:bfac05b2d50f 245 {
Arkadi 2:59c1a24aed7c 246 while ((pc.readable()) || (switch_dsp.readable())) {
Arkadi 1:574b54755983 247 // read icoming
Arkadi 2:59c1a24aed7c 248 uint8_t in_byte=0;
Arkadi 1:574b54755983 249 //led = !led;
Arkadi 2:59c1a24aed7c 250 if (pc.readable()) {
Arkadi 2:59c1a24aed7c 251 in_byte = pc.getc();
Arkadi 2:59c1a24aed7c 252 } else if (switch_dsp.readable()) {
Arkadi 2:59c1a24aed7c 253 in_byte = switch_dsp.getc();
Arkadi 2:59c1a24aed7c 254 }
Arkadi 1:574b54755983 255 #ifdef DEBUG_MOD1
Arkadi 1:574b54755983 256 pc.putc(in_byte);
Arkadi 1:574b54755983 257 #endif
Arkadi 1:574b54755983 258 // detect start message , end message
Arkadi 1:574b54755983 259 switch (packetMSG.syncFlag) {
Arkadi 1:574b54755983 260 // waiting for header
Arkadi 1:574b54755983 261 case 0: {
Arkadi 1:574b54755983 262 if (packetMSG.header[packetMSG.syncIndex] == in_byte) {
Arkadi 1:574b54755983 263 packetMSG.syncIndex++;
Arkadi 1:574b54755983 264 if (packetMSG.syncIndex == HEADER_SIZE) { // finish header SYNC
Arkadi 1:574b54755983 265 packetMSG.syncFlag = 1; // start collecting data, wait for footer
Arkadi 1:574b54755983 266 packetMSG.bufferIndex = 0;
Arkadi 1:574b54755983 267 packetMSG.syncIndex=0;
Arkadi 1:574b54755983 268 }
Arkadi 1:574b54755983 269 } else { // reinit sync
Arkadi 1:574b54755983 270 packetMSG.syncIndex=0;
Arkadi 1:574b54755983 271 }
Arkadi 1:574b54755983 272 //pc.printf("case 0 , %d \r\n",packetMSG.syncIndex);
Arkadi 1:574b54755983 273 break;
Arkadi 1:574b54755983 274 }
Arkadi 1:574b54755983 275 // waiting for footer
Arkadi 1:574b54755983 276 case 1: {
Arkadi 1:574b54755983 277 // add byte to buffer
Arkadi 1:574b54755983 278 packetMSG.buffer[packetMSG.bufferIndex] = in_byte;
Arkadi 1:574b54755983 279 packetMSG.bufferIndex++;
Arkadi 1:574b54755983 280 if (packetMSG.bufferIndex >= MSG_BUFFER_SIZE) { // buffer overflow
Arkadi 1:574b54755983 281 // reset buffer
Arkadi 1:574b54755983 282 packetMSG.bufferIndex = 0;
Arkadi 1:574b54755983 283 packetMSG.syncIndex = 0;
Arkadi 1:574b54755983 284 packetMSG.syncFlag = 0;
Arkadi 1:574b54755983 285 } else if (packetMSG.footer[packetMSG.syncIndex] == in_byte) { // footer char recieved
Arkadi 1:574b54755983 286 packetMSG.syncIndex++;
Arkadi 1:574b54755983 287 packetMSG.syncFlag=2; // move to verify footer
Arkadi 1:574b54755983 288 }
Arkadi 1:574b54755983 289 //pc.printf("case 2 , %d \r\n",packetMSG.syncIndex);
Arkadi 1:574b54755983 290 break;
Arkadi 1:574b54755983 291 }
Arkadi 1:574b54755983 292 // verify footer
Arkadi 1:574b54755983 293 case 2: {
Arkadi 1:574b54755983 294 // add byte to buffer
Arkadi 1:574b54755983 295 packetMSG.buffer[packetMSG.bufferIndex] = in_byte;
Arkadi 1:574b54755983 296 packetMSG.bufferIndex++;
Arkadi 1:574b54755983 297 if (packetMSG.bufferIndex >= MSG_BUFFER_SIZE) { // buffer overflow
Arkadi 1:574b54755983 298 // reset buffer
Arkadi 1:574b54755983 299 packetMSG.bufferIndex = 0;
Arkadi 1:574b54755983 300 packetMSG.syncIndex = 0;
Arkadi 1:574b54755983 301 packetMSG.syncFlag = 0;
Arkadi 1:574b54755983 302 } else if (packetMSG.footer[packetMSG.syncIndex] == in_byte) { // footer char recieved
Arkadi 1:574b54755983 303 packetMSG.syncIndex++;
Arkadi 1:574b54755983 304 if (packetMSG.syncIndex == FOOTER_SIZE) { // finish footer SYNC
Arkadi 1:574b54755983 305 packetMSG.syncFlag = 3;
Arkadi 1:574b54755983 306 // copy packet to json buffer
Arkadi 1:574b54755983 307 memcpy (&json, &packetMSG.buffer, packetMSG.bufferIndex);
Arkadi 1:574b54755983 308 json[packetMSG.bufferIndex]=NULL; // end with NULL to indicate end of string
Arkadi 1:574b54755983 309 // copy packet to json buffer with sprintf
Arkadi 1:574b54755983 310 //sprintf(json, "%.*s", packetMSG.bufferIndex, packetMSG.buffer );
Arkadi 1:574b54755983 311 // send msg to parse.
Arkadi 1:574b54755983 312 parsePacket();
Arkadi 1:574b54755983 313 // reset buffer
Arkadi 1:574b54755983 314 packetMSG.bufferIndex = 0;
Arkadi 1:574b54755983 315 packetMSG.syncIndex = 0;
Arkadi 1:574b54755983 316 packetMSG.syncFlag = 0;
Arkadi 1:574b54755983 317 }
Arkadi 1:574b54755983 318 } else { // footer broke restart wait for footer
Arkadi 1:574b54755983 319 packetMSG.syncFlag=1;
Arkadi 1:574b54755983 320 // verify that it didnt broke on first footer char
Arkadi 1:574b54755983 321 if (packetMSG.footer[0] == in_byte) {
Arkadi 1:574b54755983 322 packetMSG.syncIndex=1;
Arkadi 1:574b54755983 323 } else {
Arkadi 1:574b54755983 324 packetMSG.syncIndex=0;
Arkadi 1:574b54755983 325 }
Arkadi 1:574b54755983 326 }
Arkadi 1:574b54755983 327 break;
Arkadi 1:574b54755983 328 }
Arkadi 1:574b54755983 329 default: {
Arkadi 1:574b54755983 330 pc.printf("Sonmething went wrong \r\n");
Arkadi 1:574b54755983 331 break;
Arkadi 1:574b54755983 332 }
Arkadi 1:574b54755983 333 } // end switch
Arkadi 1:574b54755983 334 }// end uart readable
Arkadi 1:574b54755983 335 } // end rxCallback
Arkadi 1:574b54755983 336
Arkadi 1:574b54755983 337 // initialize packet struct
Arkadi 1:574b54755983 338 void initPacket(void)
Arkadi 1:574b54755983 339 {
Arkadi 1:574b54755983 340 // init variables to default:
Arkadi 1:574b54755983 341 packetMSG.header[0] = 'j';
Arkadi 1:574b54755983 342 packetMSG.header[1] = 's';
Arkadi 1:574b54755983 343 packetMSG.header[2] = 'o';
Arkadi 1:574b54755983 344 packetMSG.header[3] = 'n';
Arkadi 1:574b54755983 345 packetMSG.header[4] = ':';
Arkadi 1:574b54755983 346
Arkadi 1:574b54755983 347 packetMSG.footer[0]= 13; // /r
Arkadi 1:574b54755983 348 packetMSG.footer[1]= 10; // /n
Arkadi 1:574b54755983 349
Arkadi 1:574b54755983 350 packetMSG.syncIndex=0; // sync index for header / footer
Arkadi 1:574b54755983 351 packetMSG.syncFlag=0; // 0 - waiting for header, 1 - waiting for footer, 2 - verify footer, 3 - finish footer send to parser, flash buffer
Arkadi 1:574b54755983 352 packetMSG.bufferIndex=0; // buffer index
Arkadi 1:574b54755983 353 }// end init Packet struct
Arkadi 1:574b54755983 354
Arkadi 1:574b54755983 355
Arkadi 1:574b54755983 356
Arkadi 1:574b54755983 357 // Packet Parser
Arkadi 1:574b54755983 358 void parsePacket(void)
Arkadi 1:574b54755983 359 {
Arkadi 1:574b54755983 360 string targetName;
Arkadi 1:574b54755983 361 #ifdef DEBUG_MOD2
Arkadi 1:574b54755983 362 // write buffer to screen
Arkadi 1:574b54755983 363 //pc.printf("%d, %.*s", packetMSG.bufferIndex ,packetMSG.bufferIndex, packetMSG.buffer );
Arkadi 1:574b54755983 364 pc.printf("%s", json);
Arkadi 1:574b54755983 365 #endif
Arkadi 1:574b54755983 366
Arkadi 1:574b54755983 367 // GUI message format Switch: {"name":"switch","mic":0, "spk": [0,1,0,0,0]}
Arkadi 1:574b54755983 368 parse(guiCmd, json);
Arkadi 1:574b54755983 369
Arkadi 1:574b54755983 370 // get target:
Arkadi 1:574b54755983 371 targetName = guiCmd["name"].get<string>(); // switch / dsp
Arkadi 1:574b54755983 372
Arkadi 1:574b54755983 373 #ifdef DEBUG_MOD2
Arkadi 1:574b54755983 374 // send parsed values
Arkadi 1:574b54755983 375 pc.printf("targetName: %s \r\n", targetName.c_str());
Arkadi 1:574b54755983 376 #endif
Arkadi 1:574b54755983 377
Arkadi 1:574b54755983 378 // select handler based on target mcu
Arkadi 1:574b54755983 379 if (targetName == "dsp") {
Arkadi 1:574b54755983 380 dspPacket();
Arkadi 1:574b54755983 381 } else {
Arkadi 1:574b54755983 382 #ifdef DEBUG_MOD2
Arkadi 1:574b54755983 383 // unrecognised target
Arkadi 1:574b54755983 384 pc.printf("unrecognised target: %s \r\n", targetName.c_str());
Arkadi 1:574b54755983 385 #endif
Arkadi 0:bfac05b2d50f 386 }
Arkadi 1:574b54755983 387 // led blink
Arkadi 1:574b54755983 388 led = !led;
Arkadi 1:574b54755983 389 }// end parse
Arkadi 1:574b54755983 390
Arkadi 1:574b54755983 391 // DSP Packet Handler
Arkadi 1:574b54755983 392 void dspPacket(void)
Arkadi 1:574b54755983 393 {
Arkadi 1:574b54755983 394 string modeType;
Arkadi 4:59319802012b 395 // get operation mode
Arkadi 1:574b54755983 396 modeType = guiCmd["mode"].get<string>();
Arkadi 1:574b54755983 397
Arkadi 1:574b54755983 398 #ifdef DEBUG_MOD10
Arkadi 1:574b54755983 399 // send parsed values
Arkadi 4:59319802012b 400 pc.printf("mode: %s\r\n", modeType.c_str());
Arkadi 4:59319802012b 401 switch_dsp.printf("mode: %s\r\n", modeType.c_str());
Arkadi 1:574b54755983 402 #endif
Arkadi 1:574b54755983 403 // selected operation mode
Arkadi 4:59319802012b 404 if ( modeType == "off" ) {
Arkadi 4:59319802012b 405 FilterFunction = offMode;
Arkadi 3:48258b86e182 406 operationMode = 0 ;
Arkadi 4:59319802012b 407 } else if( modeType == "passthrough" ) {
Arkadi 4:59319802012b 408 FilterFunction = passthrough;
Arkadi 3:48258b86e182 409 operationMode = 1 ;
Arkadi 4:59319802012b 410 }else if( modeType == "highpass" ) {
Arkadi 4:59319802012b 411 FilterFunction = highpass;
Arkadi 4:59319802012b 412 operationMode = 2 ;
Arkadi 4:59319802012b 413 }else if( modeType == "hpf_trig" ) {
Arkadi 4:59319802012b 414 FilterFunction = highpassTrig;
Arkadi 4:59319802012b 415 operationMode = 3 ;
Arkadi 1:574b54755983 416 } else {
Arkadi 4:59319802012b 417 switch_dsp.printf("undefined mode %s \r\n", modeType.c_str());
Arkadi 4:59319802012b 418 FilterFunction = offMode;
Arkadi 3:48258b86e182 419 operationMode = 0 ;
Arkadi 1:574b54755983 420 }
Arkadi 1:574b54755983 421
Arkadi 1:574b54755983 422 }// end dspPacket