Arkadi Rafalovich / Mbed 2 deprecated TAU_ReSpeaker_DSP_V02

ReSpeaker DSP V02

Dependencies:   mbed MbedJSONValue

main.cpp@6:e8b4ca41c691, 2018-08-06 (annotated)

Committer:
Arkadi
Date:
Mon Aug 06 09:34:45 2018 +0000
Revision:
6:e8b4ca41c691
Parent:
5:ec6f2323a263
Child:
7:25c81cb23e42
Minor changes Trigger mode bug fix

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Arkadi 0:bfac05b2d50f 1 ////////////////////////////////////////
Arkadi 1:574b54755983 2 // Tau_ReSpeaker_DSP V01 //
Arkadi 5:ec6f2323a263 3 // Arkadiraf@gmail.com - 09/04/2018 //
Arkadi 0:bfac05b2d50f 4 ////////////////////////////////////////
Arkadi 0:bfac05b2d50f 5 /*
Arkadi 5:ec6f2323a263 6 Json Format: json:{"name":"dsp","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 5:ec6f2323a263 60 #define DEBUG_MOD10 // responsivity msges to gui
Arkadi 6:e8b4ca41c691 61 #define DEBUG_MOD11 // loop frequency indicator
Arkadi 0:bfac05b2d50f 62 // Sine generator
Arkadi 1:574b54755983 63 #define PI_DOUBLE (3.141592653589793238462)
Arkadi 1:574b54755983 64 #define PI_FLOAT (3.14159f)
Arkadi 1:574b54755983 65
Arkadi 1:574b54755983 66 // json commad
Arkadi 1:574b54755983 67 #define MSG_BUFFER_SIZE 512
Arkadi 1:574b54755983 68 #define HEADER_SIZE 5
Arkadi 1:574b54755983 69 #define FOOTER_SIZE 2
Arkadi 0:bfac05b2d50f 70
Arkadi 0:bfac05b2d50f 71 /////////////
Arkadi 0:bfac05b2d50f 72 // Objects //
Arkadi 0:bfac05b2d50f 73 /////////////
Arkadi 1:574b54755983 74 // json
Arkadi 1:574b54755983 75 MbedJSONValue guiCmd;
Arkadi 0:bfac05b2d50f 76
Arkadi 0:bfac05b2d50f 77 // uart
Arkadi 1:574b54755983 78 Serial pc(USBTX, USBRX);
Arkadi 0:bfac05b2d50f 79
Arkadi 2:59c1a24aed7c 80 // uart switch_dsp
Arkadi 2:59c1a24aed7c 81 Serial switch_dsp(PC_10, PC_11);
Arkadi 2:59c1a24aed7c 82
Arkadi 0:bfac05b2d50f 83 // digital
Arkadi 0:bfac05b2d50f 84 DigitalIn user_button(PC_13);
Arkadi 0:bfac05b2d50f 85 DigitalIn sw_trigger(PA_10);
Arkadi 0:bfac05b2d50f 86 DigitalOut led(PA_5);
Arkadi 1:574b54755983 87 DigitalOut mytoggle(PA_6);
Arkadi 0:bfac05b2d50f 88
Arkadi 1:574b54755983 89 // analog / define to init at mbed initialization. work directly with registers
Arkadi 0:bfac05b2d50f 90 AnalogOut dsp_output(PA_4);
Arkadi 0:bfac05b2d50f 91 AnalogIn dsp_input(PA_0);
Arkadi 0:bfac05b2d50f 92
Arkadi 1:574b54755983 93
Arkadi 1:574b54755983 94 // ADC/DAC declarations
Arkadi 1:574b54755983 95 ADC_HandleTypeDef hadc1;
Arkadi 1:574b54755983 96 DAC_HandleTypeDef hdac1;
Arkadi 1:574b54755983 97
Arkadi 0:bfac05b2d50f 98 ///////////////
Arkadi 0:bfac05b2d50f 99 // variables //
Arkadi 0:bfac05b2d50f 100 ///////////////
Arkadi 0:bfac05b2d50f 101
Arkadi 1:574b54755983 102 // json buffer
Arkadi 1:574b54755983 103 char json[MSG_BUFFER_SIZE];
Arkadi 1:574b54755983 104
Arkadi 1:574b54755983 105 // packet variables
Arkadi 1:574b54755983 106 struct packetMSG_struct {
Arkadi 1:574b54755983 107 // recieve message variables
Arkadi 1:574b54755983 108 uint8_t header[HEADER_SIZE];
Arkadi 1:574b54755983 109 uint8_t footer[FOOTER_SIZE];
Arkadi 1:574b54755983 110 uint8_t syncIndex; // sync index for header / footer
Arkadi 1:574b54755983 111 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 112 // buffer
Arkadi 1:574b54755983 113 uint16_t bufferIndex; // buffer index
Arkadi 1:574b54755983 114 uint8_t buffer[MSG_BUFFER_SIZE];
Arkadi 1:574b54755983 115 } ;
Arkadi 1:574b54755983 116 packetMSG_struct packetMSG;
Arkadi 1:574b54755983 117
Arkadi 1:574b54755983 118
Arkadi 1:574b54755983 119 // Dac Register for direct method of setting DAC value`s
Arkadi 1:574b54755983 120 __IO uint32_t Dac_Reg = 0;
Arkadi 1:574b54755983 121
Arkadi 0:bfac05b2d50f 122 // analog input
Arkadi 0:bfac05b2d50f 123 uint16_t adc_in=0;
Arkadi 0:bfac05b2d50f 124
Arkadi 1:574b54755983 125 // toogle pin state
Arkadi 1:574b54755983 126 bool toggelState=0;
Arkadi 1:574b54755983 127
Arkadi 1:574b54755983 128 // create function pointer
Arkadi 1:574b54755983 129 typedef void(*functionPtr)(void);
Arkadi 1:574b54755983 130 functionPtr FilterFunction;
Arkadi 1:574b54755983 131
Arkadi 3:48258b86e182 132 // alternative functuin selection (faster mcu process)
Arkadi 5:ec6f2323a263 133 volatile uint8_t operationMode = 1;
Arkadi 4:59319802012b 134 // 0 - off
Arkadi 4:59319802012b 135 // 1 - passthrough - no filter
Arkadi 4:59319802012b 136 // 2 - highpass - High Pass filter
Arkadi 4:59319802012b 137 // 3 - hpf_trig - High Pass filter + Trigger mode
Arkadi 3:48258b86e182 138
Arkadi 5:ec6f2323a263 139
Arkadi 5:ec6f2323a263 140 // Trigger mode variables
Arkadi 5:ec6f2323a263 141 float trigTresh = 0.75; // threshold for trigger mode
Arkadi 5:ec6f2323a263 142 uint32_t trigDelaySet = 3000; // counter for pulse pass
Arkadi 5:ec6f2323a263 143 uint32_t trigDelay = trigDelaySet; // counter for pulse pass
Arkadi 5:ec6f2323a263 144 uint32_t trigPause = 5000; // pause after trigger in microseconds
Arkadi 5:ec6f2323a263 145
Arkadi 0:bfac05b2d50f 146 ///////////////
Arkadi 0:bfac05b2d50f 147 // Functions //
Arkadi 0:bfac05b2d50f 148 ///////////////
Arkadi 0:bfac05b2d50f 149
Arkadi 1:574b54755983 150 // init functions header //hadc1 needs to be defined preiod #incude
Arkadi 1:574b54755983 151 #include "adc_init.h" // initialize adc/dac directly for continious sample
Arkadi 1:574b54755983 152 #include "filters.h"
Arkadi 1:574b54755983 153
Arkadi 1:574b54755983 154 // nop operation
Arkadi 1:574b54755983 155 inline void NOP()
Arkadi 1:574b54755983 156 {
Arkadi 1:574b54755983 157 __ASM volatile ("nop"); // one tick operation, Use to adjust frequency by slowing down the proccess
Arkadi 1:574b54755983 158 }
Arkadi 1:574b54755983 159
Arkadi 1:574b54755983 160 // Serial Event function
Arkadi 1:574b54755983 161 void rxCallback(void);
Arkadi 1:574b54755983 162
Arkadi 1:574b54755983 163 // initialize packet struct
Arkadi 1:574b54755983 164 void initPacket(void);
Arkadi 1:574b54755983 165
Arkadi 1:574b54755983 166 // Packet Parser
Arkadi 1:574b54755983 167 void parsePacket(void);
Arkadi 1:574b54755983 168
Arkadi 1:574b54755983 169 // DSP Packet Handler
Arkadi 1:574b54755983 170 void dspPacket(void);
Arkadi 1:574b54755983 171
Arkadi 1:574b54755983 172 // initialize DSP
Arkadi 1:574b54755983 173 void initDSP(void);
Arkadi 0:bfac05b2d50f 174
Arkadi 0:bfac05b2d50f 175 ////////////////////////
Arkadi 0:bfac05b2d50f 176 // Main Code Setup : //
Arkadi 0:bfac05b2d50f 177 ////////////////////////
Arkadi 0:bfac05b2d50f 178 int main()
Arkadi 0:bfac05b2d50f 179 {
Arkadi 1:574b54755983 180 // init packet:
Arkadi 1:574b54755983 181 initPacket();
Arkadi 1:574b54755983 182
Arkadi 1:574b54755983 183 // initialize DSP
Arkadi 1:574b54755983 184 initDSP();
Arkadi 1:574b54755983 185
Arkadi 0:bfac05b2d50f 186 pc.baud(57600);
Arkadi 2:59c1a24aed7c 187 switch_dsp.baud(57600);
Arkadi 2:59c1a24aed7c 188
Arkadi 2:59c1a24aed7c 189
Arkadi 2:59c1a24aed7c 190 // pc is used for debbuging, in application mode the commands are from the switch_dsp.
Arkadi 1:574b54755983 191 // attach serial event interrupt
Arkadi 1:574b54755983 192 pc.attach(&rxCallback, Serial::RxIrq);
Arkadi 2:59c1a24aed7c 193
Arkadi 2:59c1a24aed7c 194 // attach serial event interrupt
Arkadi 2:59c1a24aed7c 195 switch_dsp.attach(&rxCallback, Serial::RxIrq);
Arkadi 2:59c1a24aed7c 196
Arkadi 0:bfac05b2d50f 197 #ifdef DEBUG_MOD1
Arkadi 0:bfac05b2d50f 198 pc.printf("ReSpeaker Test \r\n");
Arkadi 0:bfac05b2d50f 199 #endif
Arkadi 0:bfac05b2d50f 200
Arkadi 0:bfac05b2d50f 201 ///////////////////////
Arkadi 0:bfac05b2d50f 202 // Main Code Loop : //
Arkadi 0:bfac05b2d50f 203 ///////////////////////
Arkadi 0:bfac05b2d50f 204 while(1) {
Arkadi 1:574b54755983 205 // run selected filter
Arkadi 3:48258b86e182 206 if (operationMode == 0) {
Arkadi 4:59319802012b 207 offMode();
Arkadi 3:48258b86e182 208 } else if (operationMode == 1) {
Arkadi 4:59319802012b 209 passthrough();
Arkadi 4:59319802012b 210 } else if (operationMode == 2) {
Arkadi 4:59319802012b 211 highpass();
Arkadi 4:59319802012b 212 } else if (operationMode == 3) {
Arkadi 4:59319802012b 213 highpassTrig();
Arkadi 3:48258b86e182 214 }
Arkadi 4:59319802012b 215 //highpass_filter();
Arkadi 3:48258b86e182 216 // more elegant but much slower option:
Arkadi 3:48258b86e182 217 //FilterFunction();
Arkadi 1:574b54755983 218 #ifdef DEBUG_MOD11
Arkadi 1:574b54755983 219 // toggle pin, Loop frequency indicator
Arkadi 1:574b54755983 220 toggelState=!toggelState;
Arkadi 1:574b54755983 221 mytoggle.write(toggelState);
Arkadi 1:574b54755983 222 #endif
Arkadi 3:48258b86e182 223 } // end loop
Arkadi 3:48258b86e182 224 } // end main
Arkadi 0:bfac05b2d50f 225
Arkadi 0:bfac05b2d50f 226 ///////////////
Arkadi 0:bfac05b2d50f 227 // Functions //
Arkadi 0:bfac05b2d50f 228 ///////////////
Arkadi 0:bfac05b2d50f 229
Arkadi 1:574b54755983 230 // initialize DSP
Arkadi 1:574b54755983 231 void initDSP(void)
Arkadi 1:574b54755983 232 {
Arkadi 1:574b54755983 233 // init dac
Arkadi 1:574b54755983 234 ADC1_Init();
Arkadi 1:574b54755983 235 DAC1_Init();
Arkadi 1:574b54755983 236
Arkadi 1:574b54755983 237 HAL_ADC_Start(&hadc1);
Arkadi 1:574b54755983 238 HAL_DAC_Start(&hdac1, DAC_CHANNEL_1);
Arkadi 1:574b54755983 239
Arkadi 1:574b54755983 240 // define Dac Register for direct method of setting DAC value`s
Arkadi 1:574b54755983 241 Dac_Reg = (uint32_t) (hdac1.Instance);
Arkadi 1:574b54755983 242 Dac_Reg += __HAL_DHR12R1_ALIGNEMENT(DAC_ALIGN_12B_R);
Arkadi 1:574b54755983 243
Arkadi 1:574b54755983 244 // intialize filter function pointer
Arkadi 5:ec6f2323a263 245 FilterFunction = passthrough;//highpass_filter;
Arkadi 6:e8b4ca41c691 246 operationMode = 0 ;
Arkadi 1:574b54755983 247 }
Arkadi 1:574b54755983 248
Arkadi 1:574b54755983 249 // Serial Event function
Arkadi 1:574b54755983 250 void rxCallback(void)
Arkadi 0:bfac05b2d50f 251 {
Arkadi 2:59c1a24aed7c 252 while ((pc.readable()) || (switch_dsp.readable())) {
Arkadi 1:574b54755983 253 // read icoming
Arkadi 2:59c1a24aed7c 254 uint8_t in_byte=0;
Arkadi 1:574b54755983 255 //led = !led;
Arkadi 2:59c1a24aed7c 256 if (pc.readable()) {
Arkadi 2:59c1a24aed7c 257 in_byte = pc.getc();
Arkadi 2:59c1a24aed7c 258 } else if (switch_dsp.readable()) {
Arkadi 2:59c1a24aed7c 259 in_byte = switch_dsp.getc();
Arkadi 2:59c1a24aed7c 260 }
Arkadi 1:574b54755983 261 #ifdef DEBUG_MOD1
Arkadi 1:574b54755983 262 pc.putc(in_byte);
Arkadi 1:574b54755983 263 #endif
Arkadi 1:574b54755983 264 // detect start message , end message
Arkadi 1:574b54755983 265 switch (packetMSG.syncFlag) {
Arkadi 1:574b54755983 266 // waiting for header
Arkadi 1:574b54755983 267 case 0: {
Arkadi 1:574b54755983 268 if (packetMSG.header[packetMSG.syncIndex] == in_byte) {
Arkadi 1:574b54755983 269 packetMSG.syncIndex++;
Arkadi 1:574b54755983 270 if (packetMSG.syncIndex == HEADER_SIZE) { // finish header SYNC
Arkadi 1:574b54755983 271 packetMSG.syncFlag = 1; // start collecting data, wait for footer
Arkadi 1:574b54755983 272 packetMSG.bufferIndex = 0;
Arkadi 1:574b54755983 273 packetMSG.syncIndex=0;
Arkadi 1:574b54755983 274 }
Arkadi 1:574b54755983 275 } else { // reinit sync
Arkadi 1:574b54755983 276 packetMSG.syncIndex=0;
Arkadi 1:574b54755983 277 }
Arkadi 1:574b54755983 278 //pc.printf("case 0 , %d \r\n",packetMSG.syncIndex);
Arkadi 1:574b54755983 279 break;
Arkadi 1:574b54755983 280 }
Arkadi 1:574b54755983 281 // waiting for footer
Arkadi 1:574b54755983 282 case 1: {
Arkadi 1:574b54755983 283 // add byte to buffer
Arkadi 1:574b54755983 284 packetMSG.buffer[packetMSG.bufferIndex] = in_byte;
Arkadi 1:574b54755983 285 packetMSG.bufferIndex++;
Arkadi 1:574b54755983 286 if (packetMSG.bufferIndex >= MSG_BUFFER_SIZE) { // buffer overflow
Arkadi 1:574b54755983 287 // reset buffer
Arkadi 1:574b54755983 288 packetMSG.bufferIndex = 0;
Arkadi 1:574b54755983 289 packetMSG.syncIndex = 0;
Arkadi 1:574b54755983 290 packetMSG.syncFlag = 0;
Arkadi 1:574b54755983 291 } else if (packetMSG.footer[packetMSG.syncIndex] == in_byte) { // footer char recieved
Arkadi 1:574b54755983 292 packetMSG.syncIndex++;
Arkadi 1:574b54755983 293 packetMSG.syncFlag=2; // move to verify footer
Arkadi 1:574b54755983 294 }
Arkadi 1:574b54755983 295 //pc.printf("case 2 , %d \r\n",packetMSG.syncIndex);
Arkadi 1:574b54755983 296 break;
Arkadi 1:574b54755983 297 }
Arkadi 1:574b54755983 298 // verify footer
Arkadi 1:574b54755983 299 case 2: {
Arkadi 1:574b54755983 300 // add byte to buffer
Arkadi 1:574b54755983 301 packetMSG.buffer[packetMSG.bufferIndex] = in_byte;
Arkadi 1:574b54755983 302 packetMSG.bufferIndex++;
Arkadi 1:574b54755983 303 if (packetMSG.bufferIndex >= MSG_BUFFER_SIZE) { // buffer overflow
Arkadi 1:574b54755983 304 // reset buffer
Arkadi 1:574b54755983 305 packetMSG.bufferIndex = 0;
Arkadi 1:574b54755983 306 packetMSG.syncIndex = 0;
Arkadi 1:574b54755983 307 packetMSG.syncFlag = 0;
Arkadi 1:574b54755983 308 } else if (packetMSG.footer[packetMSG.syncIndex] == in_byte) { // footer char recieved
Arkadi 1:574b54755983 309 packetMSG.syncIndex++;
Arkadi 1:574b54755983 310 if (packetMSG.syncIndex == FOOTER_SIZE) { // finish footer SYNC
Arkadi 1:574b54755983 311 packetMSG.syncFlag = 3;
Arkadi 1:574b54755983 312 // copy packet to json buffer
Arkadi 1:574b54755983 313 memcpy (&json, &packetMSG.buffer, packetMSG.bufferIndex);
Arkadi 1:574b54755983 314 json[packetMSG.bufferIndex]=NULL; // end with NULL to indicate end of string
Arkadi 1:574b54755983 315 // copy packet to json buffer with sprintf
Arkadi 1:574b54755983 316 //sprintf(json, "%.*s", packetMSG.bufferIndex, packetMSG.buffer );
Arkadi 1:574b54755983 317 // send msg to parse.
Arkadi 1:574b54755983 318 parsePacket();
Arkadi 1:574b54755983 319 // reset buffer
Arkadi 1:574b54755983 320 packetMSG.bufferIndex = 0;
Arkadi 1:574b54755983 321 packetMSG.syncIndex = 0;
Arkadi 1:574b54755983 322 packetMSG.syncFlag = 0;
Arkadi 1:574b54755983 323 }
Arkadi 1:574b54755983 324 } else { // footer broke restart wait for footer
Arkadi 1:574b54755983 325 packetMSG.syncFlag=1;
Arkadi 1:574b54755983 326 // verify that it didnt broke on first footer char
Arkadi 1:574b54755983 327 if (packetMSG.footer[0] == in_byte) {
Arkadi 1:574b54755983 328 packetMSG.syncIndex=1;
Arkadi 1:574b54755983 329 } else {
Arkadi 1:574b54755983 330 packetMSG.syncIndex=0;
Arkadi 1:574b54755983 331 }
Arkadi 1:574b54755983 332 }
Arkadi 1:574b54755983 333 break;
Arkadi 1:574b54755983 334 }
Arkadi 1:574b54755983 335 default: {
Arkadi 1:574b54755983 336 pc.printf("Sonmething went wrong \r\n");
Arkadi 1:574b54755983 337 break;
Arkadi 1:574b54755983 338 }
Arkadi 1:574b54755983 339 } // end switch
Arkadi 1:574b54755983 340 }// end uart readable
Arkadi 1:574b54755983 341 } // end rxCallback
Arkadi 1:574b54755983 342
Arkadi 1:574b54755983 343 // initialize packet struct
Arkadi 1:574b54755983 344 void initPacket(void)
Arkadi 1:574b54755983 345 {
Arkadi 1:574b54755983 346 // init variables to default:
Arkadi 1:574b54755983 347 packetMSG.header[0] = 'j';
Arkadi 1:574b54755983 348 packetMSG.header[1] = 's';
Arkadi 1:574b54755983 349 packetMSG.header[2] = 'o';
Arkadi 1:574b54755983 350 packetMSG.header[3] = 'n';
Arkadi 1:574b54755983 351 packetMSG.header[4] = ':';
Arkadi 1:574b54755983 352
Arkadi 1:574b54755983 353 packetMSG.footer[0]= 13; // /r
Arkadi 1:574b54755983 354 packetMSG.footer[1]= 10; // /n
Arkadi 1:574b54755983 355
Arkadi 1:574b54755983 356 packetMSG.syncIndex=0; // sync index for header / footer
Arkadi 1:574b54755983 357 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 358 packetMSG.bufferIndex=0; // buffer index
Arkadi 1:574b54755983 359 }// end init Packet struct
Arkadi 1:574b54755983 360
Arkadi 1:574b54755983 361
Arkadi 1:574b54755983 362
Arkadi 1:574b54755983 363 // Packet Parser
Arkadi 1:574b54755983 364 void parsePacket(void)
Arkadi 1:574b54755983 365 {
Arkadi 1:574b54755983 366 string targetName;
Arkadi 1:574b54755983 367 #ifdef DEBUG_MOD2
Arkadi 1:574b54755983 368 // write buffer to screen
Arkadi 1:574b54755983 369 //pc.printf("%d, %.*s", packetMSG.bufferIndex ,packetMSG.bufferIndex, packetMSG.buffer );
Arkadi 1:574b54755983 370 pc.printf("%s", json);
Arkadi 1:574b54755983 371 #endif
Arkadi 1:574b54755983 372
Arkadi 1:574b54755983 373 // GUI message format Switch: {"name":"switch","mic":0, "spk": [0,1,0,0,0]}
Arkadi 1:574b54755983 374 parse(guiCmd, json);
Arkadi 1:574b54755983 375
Arkadi 1:574b54755983 376 // get target:
Arkadi 1:574b54755983 377 targetName = guiCmd["name"].get<string>(); // switch / dsp
Arkadi 1:574b54755983 378
Arkadi 1:574b54755983 379 #ifdef DEBUG_MOD2
Arkadi 1:574b54755983 380 // send parsed values
Arkadi 1:574b54755983 381 pc.printf("targetName: %s \r\n", targetName.c_str());
Arkadi 1:574b54755983 382 #endif
Arkadi 1:574b54755983 383
Arkadi 1:574b54755983 384 // select handler based on target mcu
Arkadi 1:574b54755983 385 if (targetName == "dsp") {
Arkadi 1:574b54755983 386 dspPacket();
Arkadi 1:574b54755983 387 } else {
Arkadi 1:574b54755983 388 #ifdef DEBUG_MOD2
Arkadi 1:574b54755983 389 // unrecognised target
Arkadi 1:574b54755983 390 pc.printf("unrecognised target: %s \r\n", targetName.c_str());
Arkadi 1:574b54755983 391 #endif
Arkadi 0:bfac05b2d50f 392 }
Arkadi 1:574b54755983 393 // led blink
Arkadi 1:574b54755983 394 led = !led;
Arkadi 1:574b54755983 395 }// end parse
Arkadi 1:574b54755983 396
Arkadi 1:574b54755983 397 // DSP Packet Handler
Arkadi 1:574b54755983 398 void dspPacket(void)
Arkadi 1:574b54755983 399 {
Arkadi 1:574b54755983 400 string modeType;
Arkadi 4:59319802012b 401 // get operation mode
Arkadi 1:574b54755983 402 modeType = guiCmd["mode"].get<string>();
Arkadi 1:574b54755983 403
Arkadi 1:574b54755983 404 #ifdef DEBUG_MOD10
Arkadi 1:574b54755983 405 // send parsed values
Arkadi 4:59319802012b 406 pc.printf("mode: %s\r\n", modeType.c_str());
Arkadi 4:59319802012b 407 switch_dsp.printf("mode: %s\r\n", modeType.c_str());
Arkadi 1:574b54755983 408 #endif
Arkadi 1:574b54755983 409 // selected operation mode
Arkadi 4:59319802012b 410 if ( modeType == "off" ) {
Arkadi 4:59319802012b 411 FilterFunction = offMode;
Arkadi 3:48258b86e182 412 operationMode = 0 ;
Arkadi 4:59319802012b 413 } else if( modeType == "passthrough" ) {
Arkadi 4:59319802012b 414 FilterFunction = passthrough;
Arkadi 3:48258b86e182 415 operationMode = 1 ;
Arkadi 4:59319802012b 416 }else if( modeType == "highpass" ) {
Arkadi 4:59319802012b 417 FilterFunction = highpass;
Arkadi 4:59319802012b 418 operationMode = 2 ;
Arkadi 4:59319802012b 419 }else if( modeType == "hpf_trig" ) {
Arkadi 4:59319802012b 420 FilterFunction = highpassTrig;
Arkadi 4:59319802012b 421 operationMode = 3 ;
Arkadi 1:574b54755983 422 } else {
Arkadi 4:59319802012b 423 switch_dsp.printf("undefined mode %s \r\n", modeType.c_str());
Arkadi 4:59319802012b 424 FilterFunction = offMode;
Arkadi 3:48258b86e182 425 operationMode = 0 ;
Arkadi 1:574b54755983 426 }
Arkadi 1:574b54755983 427
Arkadi 1:574b54755983 428 }// end dspPacket