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arduino : update the examples for Tx and Rx

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This commit is contained in:
Georgi Gerganov
2022-06-05 18:19:25 +03:00
parent 0cf3d0e36b
commit 33c3bc2131
10 changed files with 286 additions and 231 deletions
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1
examples/CMakeLists.txt
View File

@@ -89,6 +89,7 @@ else()
add_subdirectory(arduino-rx)
add_subdirectory(arduino-tx)
add_subdirectory(arduino-tx2)
endif()
if (GGWAVE_SUPPORT_SDL2)

89
examples/arduino-rx/arduino-rx.ino
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@@ -2,6 +2,11 @@
#include <PDM.h>
const int kPinLed0 = 13;
const int kPinSpeaker = 10;
const int kPinButton0 = 2;
const int kPinButton1 = 4;
using TSample = int16_t;
static const size_t kSampleSize_bytes = sizeof(TSample);
@@ -21,10 +26,47 @@ volatile int qsize = 0;
// Buffer to read samples into, each sample is 16-bits
TSample sampleBuffer[qmax];
// helper function to output the generated GGWave waveform via a buzzer
void send_text(GGWave & ggwave, uint8_t pin, const char * text, GGWave::TxProtocolId protocolId) {
ggwave.init(text, protocolId);
ggwave.encode();
const auto & tones = ggwave.txTones();
float freq_hz = -1.0f;
float duration_ms = -1.0f;
for (int i = 0; i < (int) tones.size(); ++i) {
if (tones[i].size() == 0) continue;
const auto & curTone = tones[i].front();
if (curTone.freq_hz != freq_hz) {
if (duration_ms > 0) {
tone(pin, freq_hz);
delay(duration_ms);
}
freq_hz = curTone.freq_hz;
duration_ms = 0.0f;
}
duration_ms += curTone.duration_ms;
}
if (duration_ms > 0) {
tone(pin, freq_hz);
delay(duration_ms);
}
noTone(pin);
digitalWrite(pin, LOW);
}
void setup() {
Serial.begin(57600);
while (!Serial);
pinMode(kPinLed0, OUTPUT);
pinMode(kPinSpeaker, OUTPUT);
pinMode(kPinButton0, INPUT);
pinMode(kPinButton1, INPUT);
// Configure the data receive callback
PDM.onReceive(onPDMdata);
@@ -48,6 +90,7 @@ void loop() {
Serial.println("trying to create ggwave instance");
auto p = GGWave::getDefaultParameters();
p.payloadLength = 16;
p.sampleRateInp = frequency;
p.sampleRateOut = frequency;
@@ -73,15 +116,6 @@ void loop() {
while (qsize >= p.samplesPerFrame) {
auto tStart = millis();
//Serial.print(qhead);
//Serial.print(" ");
//Serial.print(qtail);
//Serial.print(" ");
//Serial.print(qsize);
//Serial.print(" ");
//Serial.print(ggwave.getSamplesNeeded());
//Serial.println("");
ggwave.decode(sampleBuffer + qhead, p.samplesPerFrame*kSampleSize_bytes);
qsize -= p.samplesPerFrame;
qhead += p.samplesPerFrame;
@@ -91,35 +125,40 @@ void loop() {
auto tEnd = millis();
if (++niter % 10 == 0) {
// print the time it took the last decode() call to complete
// should be smaller than p.samplesPerFrame/frequency seconds
// for example: p.samplesPerFrame = 128, frequency = 6000 => not more than 20 ms
Serial.println(tEnd - tStart);
if (tEnd - tStart > 1000*(float(p.samplesPerFrame)/frequency)) {
Serial.println("Warning: decode() took too long to execute!");
}
}
nr = ggwave.rxTakeData(result);
if (nr > 0) {
Serial.println(tEnd - tStart);
Serial.println(nr);
Serial.println((char *)result.data());
Serial.print("Received data with length ");
Serial.print(nr); // should be equal to p.payloadLength
Serial.println(" bytes:");
Serial.println((char *) result.data());
if (strcmp((char *)result.data(), "test") == 0) {
ggwave.init("hello", GGWave::TxProtocolId(GGWAVE_PROTOCOL_MT_FASTEST));
ggwave.encode();
// pause microphone capture while transmitting
PDM.end();
delay(500);
const auto & tones = ggwave.txTones();
for (int i = 0; i < (int) tones.size(); ++i) {
Serial.print(" - frame ");
Serial.print(i);
Serial.print(", ");
Serial.print(tones[i].size());
Serial.print(": ");
for (int j = 0; j < (int) tones[i].size(); ++j) {
Serial.print((int)(tones[i][j].freq_hz));
Serial.print(" ");
}
Serial.println();
send_text(ggwave, kPinSpeaker, "hello", GGWAVE_PROTOCOL_MT_FASTEST);
// resume microphone capture
if (!PDM.begin(channels, frequency)) {
Serial.println("Failed to start PDM!");
while (1);
}
}
}
}
if (err > 0) {
Serial.println("ERRROR");
Serial.println(err);

10
examples/arduino-tx/CMakeLists.txt
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@@ -1,10 +0,0 @@
#
# arduino-tx
configure_file(${CMAKE_SOURCE_DIR}/include/ggwave/ggwave.h ${CMAKE_CURRENT_SOURCE_DIR}/ggwave/ggwave.h COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/ggwave.cpp ${CMAKE_CURRENT_SOURCE_DIR}/ggwave.cpp COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/fft.h ${CMAKE_CURRENT_SOURCE_DIR}/fft.h COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/reed-solomon/gf.hpp ${CMAKE_CURRENT_SOURCE_DIR}/reed-solomon/gf.hpp COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/reed-solomon/rs.hpp ${CMAKE_CURRENT_SOURCE_DIR}/reed-solomon/rs.hpp COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/reed-solomon/poly.hpp ${CMAKE_CURRENT_SOURCE_DIR}/reed-solomon/poly.hpp COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/reed-solomon/LICENSE ${CMAKE_CURRENT_SOURCE_DIR}/reed-solomon/LICENSE COPYONLY)

152
examples/arduino-tx/arduino-tx.ino
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@@ -1,6 +1,12 @@
#include "Arduino_AVRSTL.h"
// To build this example for Arduino UNO, make sure to install the ArduinoSTL library:
#include <ArduinoSTL.h>
#include "ggwave/ggwave.h"
// This example uses a custom ggwave imlpementation specifically for Arduino UNO.
// Since the Arduino UNO has only 2KB of RAM, the ggwave library is not able to
// to fit into the Arduino's memory (eventhough it is very close).
// If your microcontroller has more than 2KB of RAM, you should check the other Tx
// examples to see if you can use the original ggwave library.
#include "ggwave.h"
const int kPinLed0 = 13;
const int kPinSpeaker = 10;
@@ -9,118 +15,76 @@ const int kPinButton1 = 4;
void setup() {
Serial.begin(57600);
display_freeram();
//pinMode(kPinLed0, OUTPUT);
//pinMode(kPinSpeaker, OUTPUT);
//pinMode(kPinButton0, INPUT);
//pinMode(kPinButton1, INPUT);
pinMode(kPinLed0, OUTPUT);
pinMode(kPinSpeaker, OUTPUT);
pinMode(kPinButton0, INPUT);
pinMode(kPinButton1, INPUT);
//delay(3000);
delay(3000);
//digitalWrite(kPinLed0, HIGH);
//GGWave::send_text(kPinSpeaker, "Hello!", GGWave::TX_ARDUINO_512_FASTEST);
//digitalWrite(kPinLed0, LOW);
digitalWrite(kPinLed0, HIGH);
GGWave::send_text(kPinSpeaker, "Hello!", GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
//delay(2000);
delay(2000);
//digitalWrite(kPinLed0, HIGH);
//GGWave::send_text(kPinSpeaker, "This is a", GGWave::TX_ARDUINO_512_FASTEST);
//GGWave::send_text(kPinSpeaker, "ggwave demo", GGWave::TX_ARDUINO_512_FASTEST);
//digitalWrite(kPinLed0, LOW);
digitalWrite(kPinLed0, HIGH);
GGWave::send_text(kPinSpeaker, "This is a", GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
GGWave::send_text(kPinSpeaker, "ggwave demo", GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
//delay(2000);
delay(2000);
//digitalWrite(kPinLed0, HIGH);
//GGWave::send_text(kPinSpeaker, "The arduino", GGWave::TX_ARDUINO_512_FASTEST);
//delay(200);
//GGWave::send_text(kPinSpeaker, "transmits data", GGWave::TX_ARDUINO_512_FASTEST);
//delay(200);
//GGWave::send_text(kPinSpeaker, "using sound", GGWave::TX_ARDUINO_512_FASTEST);
//delay(200);
//GGWave::send_text(kPinSpeaker, "through a buzzer", GGWave::TX_ARDUINO_512_FASTEST);
//digitalWrite(kPinLed0, LOW);
digitalWrite(kPinLed0, HIGH);
GGWave::send_text(kPinSpeaker, "The arduino", GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
delay(200);
GGWave::send_text(kPinSpeaker, "transmits data", GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
delay(200);
GGWave::send_text(kPinSpeaker, "using sound", GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
delay(200);
GGWave::send_text(kPinSpeaker, "through a buzzer", GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
//delay(1000);
delay(1000);
//digitalWrite(kPinLed0, HIGH);
//GGWave::send_text(kPinSpeaker, "The sound is", GGWave::TX_ARDUINO_512_FASTEST);
//delay(200);
//GGWave::send_text(kPinSpeaker, "decoded in a", GGWave::TX_ARDUINO_512_FASTEST);
//delay(200);
//GGWave::send_text(kPinSpeaker, "web page.", GGWave::TX_ARDUINO_512_FASTEST);
//digitalWrite(kPinLed0, LOW);
digitalWrite(kPinLed0, HIGH);
GGWave::send_text(kPinSpeaker, "The sound is", GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
delay(200);
GGWave::send_text(kPinSpeaker, "decoded in a", GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
delay(200);
GGWave::send_text(kPinSpeaker, "web page.", GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
//delay(1000);
delay(1000);
//digitalWrite(kPinLed0, HIGH);
//GGWave::send_text(kPinSpeaker, "Press the button!", GGWave::TX_ARDUINO_512_FASTEST);
//digitalWrite(kPinLed0, LOW);
digitalWrite(kPinLed0, HIGH);
GGWave::send_text(kPinSpeaker, "Press the button!", GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
}
char txt[16];
int pressed = 0;
bool isDown = false;
void display_freeram() {
Serial.print(F("- SRAM left: "));
Serial.println(freeRam());
}
int freeRam() {
extern int __heap_start,*__brkval;
int v;
return (int)&v - (__brkval == 0 ? (int)&__heap_start : (int) __brkval);
}
void loop() {
Serial.println("hello");
int but0 = digitalRead(kPinButton0);
int but1 = digitalRead(kPinButton1);
auto p = GGWave::getDefaultParameters();
p.payloadLength = 4;
p.sampleRateInp = 6000;
p.sampleRateOut = 6000;
p.sampleRate = 6000;
p.samplesPerFrame = 128;
p.sampleFormatInp = GGWAVE_SAMPLE_FORMAT_I16;
p.sampleFormatOut = GGWAVE_SAMPLE_FORMAT_U8;
p.operatingMode = (ggwave_OperatingMode) (GGWAVE_OPERATING_MODE_TX | GGWAVE_OPERATING_MODE_TX_ONLY_TONES);
delay(1000);
GGWave::Protocols::kDefault() = {};
Serial.println("aaaaaaaaaaaa");
GGWave::Protocols::tx() = { { "[MT] Fastest", 24, 3, 1, 2, true, } };
delay(1000);
display_freeram();
Serial.println("xxxxxxxxxxx");
delay(1000);
Serial.println("yyyyyyyyyyyy");
GGWave ggwave(p);
display_freeram();
while (true) {
delay(1000);
Serial.println("working");
if (but1 == LOW && isDown == false) {
delay(200);
++pressed;
isDown = true;
} else if (but1 == HIGH) {
isDown = false;
}
//int but0 = digitalRead(kPinButton0);
//int but1 = digitalRead(kPinButton1);
if (but0 == LOW) {
snprintf(txt, 16, "Pressed: %d", pressed);
//if (but1 == LOW && isDown == false) {
// delay(200);
// ++pressed;
// isDown = true;
//} else if (but1 == HIGH) {
// isDown = false;
//}
//if (but0 == LOW) {
// snprintf(txt, 16, "Pressed: %d", pressed);
// digitalWrite(kPinLed0, HIGH);
// GGWave::send_text(kPinSpeaker, txt, GGWave::TX_ARDUINO_512_FASTEST);
// digitalWrite(kPinLed0, LOW);
// pressed = 0;
//}
digitalWrite(kPinLed0, HIGH);
GGWave::send_text(kPinSpeaker, txt, GGWave::GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
pressed = 0;
}
}

86
examples/arduino-tx/arduino-tx.ino-working
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@@ -1,86 +0,0 @@
#include <ArduinoSTL.h>
#include "ggwave/ggwave.h"
const int kPinLed0 = 13;
const int kPinSpeaker = 10;
const int kPinButton0 = 2;
const int kPinButton1 = 4;
void setup() {
//Serial.begin(57600);
//pinMode(kPinLed0, OUTPUT);
//pinMode(kPinSpeaker, OUTPUT);
//pinMode(kPinButton0, INPUT);
//pinMode(kPinButton1, INPUT);
//delay(3000);
//digitalWrite(kPinLed0, HIGH);
//GGWave::send_text(kPinSpeaker, "Hello!", GGWave::TX_ARDUINO_512_FASTEST);
//digitalWrite(kPinLed0, LOW);
//delay(2000);
//digitalWrite(kPinLed0, HIGH);
//GGWave::send_text(kPinSpeaker, "This is a", GGWave::TX_ARDUINO_512_FASTEST);
//GGWave::send_text(kPinSpeaker, "ggwave demo", GGWave::TX_ARDUINO_512_FASTEST);
//digitalWrite(kPinLed0, LOW);
//delay(2000);
//digitalWrite(kPinLed0, HIGH);
//GGWave::send_text(kPinSpeaker, "The arduino", GGWave::TX_ARDUINO_512_FASTEST);
//delay(200);
//GGWave::send_text(kPinSpeaker, "transmits data", GGWave::TX_ARDUINO_512_FASTEST);
//delay(200);
//GGWave::send_text(kPinSpeaker, "using sound", GGWave::TX_ARDUINO_512_FASTEST);
//delay(200);
//GGWave::send_text(kPinSpeaker, "through a buzzer", GGWave::TX_ARDUINO_512_FASTEST);
//digitalWrite(kPinLed0, LOW);
//delay(1000);
//digitalWrite(kPinLed0, HIGH);
//GGWave::send_text(kPinSpeaker, "The sound is", GGWave::TX_ARDUINO_512_FASTEST);
//delay(200);
//GGWave::send_text(kPinSpeaker, "decoded in a", GGWave::TX_ARDUINO_512_FASTEST);
//delay(200);
//GGWave::send_text(kPinSpeaker, "web page.", GGWave::TX_ARDUINO_512_FASTEST);
//digitalWrite(kPinLed0, LOW);
//delay(1000);
//digitalWrite(kPinLed0, HIGH);
//GGWave::send_text(kPinSpeaker, "Press the button!", GGWave::TX_ARDUINO_512_FASTEST);
//digitalWrite(kPinLed0, LOW);
}
char txt[16];
int pressed = 0;
bool isDown = false;
void loop() {
Serial.println("hello");
//int but0 = digitalRead(kPinButton0);
//int but1 = digitalRead(kPinButton1);
//if (but1 == LOW && isDown == false) {
// delay(200);
// ++pressed;
// isDown = true;
//} else if (but1 == HIGH) {
// isDown = false;
//}
//if (but0 == LOW) {
// snprintf(txt, 16, "Pressed: %d", pressed);
// digitalWrite(kPinLed0, HIGH);
// GGWave::send_text(kPinSpeaker, txt, GGWave::TX_ARDUINO_512_FASTEST);
// digitalWrite(kPinLed0, LOW);
// pressed = 0;
//}
}

24
examples/arduino-tx/ggwave.h
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@@ -867,12 +867,9 @@ const uint8_t kDataLength_bytes = 16;
const uint8_t kECCLength_bytes = getECCBytesForLength(kDataLength_bytes);
typedef enum {
TX_ARDUINO_512_NORMAL,
TX_ARDUINO_512_FAST,
TX_ARDUINO_512_FASTEST,
TX_ARDUINO_1024_NORMAL,
TX_ARDUINO_1024_FAST,
TX_ARDUINO_1024_FASTEST,
GGWAVE_PROTOCOL_MT_NORMAL,
GGWAVE_PROTOCOL_MT_FAST,
GGWAVE_PROTOCOL_MT_FASTEST,
} TxProtocolId;
struct Parameters {
@@ -913,22 +910,19 @@ void send(uint8_t pin, const uint8_t * data, const Parameters & parameters) {
digitalWrite(pin, LOW);
}
void send(uint8_t pin, const uint8_t * data, TxProtocolId protocolId = TX_ARDUINO_512_FASTEST) {
Parameters parameters = { 512, 16, 32 };
void send(uint8_t pin, const uint8_t * data, TxProtocolId protocolId = GGWAVE_PROTOCOL_MT_FASTEST) {
Parameters parameters = { 1024, 24, 64 };
switch (protocolId) {
case TX_ARDUINO_512_NORMAL: parameters = { 512, 16, 96 }; break;
case TX_ARDUINO_512_FAST: parameters = { 512, 16, 64 }; break;
case TX_ARDUINO_512_FASTEST: parameters = { 512, 16, 32 }; break;
case TX_ARDUINO_1024_NORMAL: parameters = { 1024, 16, 192 }; break;
case TX_ARDUINO_1024_FAST: parameters = { 1024, 16, 128 }; break;
case TX_ARDUINO_1024_FASTEST: parameters = { 1024, 16, 64 }; break;
case GGWAVE_PROTOCOL_MT_NORMAL: parameters = { 1024, 24, 192 }; break;
case GGWAVE_PROTOCOL_MT_FAST: parameters = { 1024, 24, 128 }; break;
case GGWAVE_PROTOCOL_MT_FASTEST: parameters = { 1024, 24, 64 }; break;
};
send(pin, data, parameters);
}
void send_text(uint8_t pin, const char * text, TxProtocolId protocolId = TX_ARDUINO_512_FASTEST) {
void send_text(uint8_t pin, const char * text, TxProtocolId protocolId = GGWAVE_PROTOCOL_MT_FASTEST) {
char tx[kDataLength_bytes];
memset(tx, 0, sizeof(tx));
strncpy(tx, text, sizeof(tx));

6
examples/arduino-tx2/.gitignore vendored Normal file
View File

@@ -0,0 +1,6 @@
ggwave
ggwave.cpp
fft.h
resampler.h
resampler.cpp
reed-solomon

10
examples/arduino-tx2/CMakeLists.txt Normal file
View File

@@ -0,0 +1,10 @@
#
# arduino-tx2
configure_file(${CMAKE_SOURCE_DIR}/include/ggwave/ggwave.h ${CMAKE_CURRENT_SOURCE_DIR}/ggwave/ggwave.h COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/ggwave.cpp ${CMAKE_CURRENT_SOURCE_DIR}/ggwave.cpp COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/fft.h ${CMAKE_CURRENT_SOURCE_DIR}/fft.h COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/reed-solomon/gf.hpp ${CMAKE_CURRENT_SOURCE_DIR}/reed-solomon/gf.hpp COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/reed-solomon/rs.hpp ${CMAKE_CURRENT_SOURCE_DIR}/reed-solomon/rs.hpp COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/reed-solomon/poly.hpp ${CMAKE_CURRENT_SOURCE_DIR}/reed-solomon/poly.hpp COPYONLY)
configure_file(${CMAKE_SOURCE_DIR}/src/reed-solomon/LICENSE ${CMAKE_CURRENT_SOURCE_DIR}/reed-solomon/LICENSE COPYONLY)

133
examples/arduino-tx2/arduino-tx2.ino Normal file
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@@ -0,0 +1,133 @@
// To build this example for Arduino UNO, make sure to install the ArduinoSTL library:
//#include <ArduinoSTL.h>
#include "ggwave/ggwave.h"
const int kPinLed0 = 13;
const int kPinSpeaker = 10;
const int kPinButton0 = 2;
const int kPinButton1 = 4;
void send_text(GGWave & ggwave, uint8_t pin, const char * text, GGWave::TxProtocolId protocolId) {
ggwave.init(text, protocolId);
ggwave.encode();
const auto & tones = ggwave.txTones();
float freq_hz = -1.0f;
float duration_ms = -1.0f;
for (int i = 0; i < (int) tones.size(); ++i) {
if (tones[i].size() == 0) continue;
const auto & curTone = tones[i].front();
if (curTone.freq_hz != freq_hz) {
if (duration_ms > 0) {
tone(pin, freq_hz);
delay(duration_ms);
}
freq_hz = curTone.freq_hz;
duration_ms = 0.0f;
}
duration_ms += curTone.duration_ms;
}
if (duration_ms > 0) {
tone(pin, freq_hz);
delay(duration_ms);
}
noTone(pin);
digitalWrite(pin, LOW);
}
void setup() {
Serial.begin(57600);
}
char txt[16];
int pressed = 0;
bool isDown = false;
void loop() {
Serial.println("hello");
auto p = GGWave::getDefaultParameters();
p.payloadLength = 16;
p.sampleRateInp = 6000;
p.sampleRateOut = 6000;
p.sampleRate = 6000;
p.samplesPerFrame = 128;
p.sampleFormatInp = GGWAVE_SAMPLE_FORMAT_I16;
p.sampleFormatOut = GGWAVE_SAMPLE_FORMAT_U8;
p.operatingMode = (ggwave_OperatingMode) (GGWAVE_OPERATING_MODE_TX | GGWAVE_OPERATING_MODE_TX_ONLY_TONES | GGWAVE_OPERATING_MODE_USE_DSS);
GGWave::Protocols::tx().only(GGWAVE_PROTOCOL_MT_FASTEST);
GGWave ggwave(p);
pinMode(kPinLed0, OUTPUT);
pinMode(kPinSpeaker, OUTPUT);
pinMode(kPinButton0, INPUT);
pinMode(kPinButton1, INPUT);
delay(3000);
digitalWrite(kPinLed0, HIGH);
send_text(ggwave, kPinSpeaker, "Hello!", GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
delay(2000);
digitalWrite(kPinLed0, HIGH);
send_text(ggwave, kPinSpeaker, "This is a", GGWAVE_PROTOCOL_MT_FASTEST);
send_text(ggwave, kPinSpeaker, "ggwave demo", GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
delay(2000);
digitalWrite(kPinLed0, HIGH);
send_text(ggwave, kPinSpeaker, "The arduino", GGWAVE_PROTOCOL_MT_FASTEST);
delay(200);
send_text(ggwave, kPinSpeaker, "transmits data", GGWAVE_PROTOCOL_MT_FASTEST);
delay(200);
send_text(ggwave, kPinSpeaker, "using sound", GGWAVE_PROTOCOL_MT_FASTEST);
delay(200);
send_text(ggwave, kPinSpeaker, "through a buzzer", GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
delay(1000);
digitalWrite(kPinLed0, HIGH);
send_text(ggwave, kPinSpeaker, "The sound is", GGWAVE_PROTOCOL_MT_FASTEST);
delay(200);
send_text(ggwave, kPinSpeaker, "decoded in a", GGWAVE_PROTOCOL_MT_FASTEST);
delay(200);
send_text(ggwave, kPinSpeaker, "web page.", GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
delay(1000);
digitalWrite(kPinLed0, HIGH);
send_text(ggwave, kPinSpeaker, "Press the button!", GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
while (true) {
int but0 = digitalRead(kPinButton0);
int but1 = digitalRead(kPinButton1);
if (but1 == LOW && isDown == false) {
delay(200);
++pressed;
isDown = true;
} else if (but1 == HIGH) {
isDown = false;
}
if (but0 == LOW) {
snprintf(txt, 16, "Pressed: %d", pressed);
digitalWrite(kPinLed0, HIGH);
send_text(ggwave, kPinSpeaker, txt, GGWAVE_PROTOCOL_MT_FASTEST);
digitalWrite(kPinLed0, LOW);
pressed = 0;
}
}
}

6
src/ggwave.cpp
View File

@@ -3,17 +3,21 @@
#include "fft.h"
#include "reed-solomon/rs.hpp"
#include <cstdio>
#include <cmath>
#include <ctime>
#include <cstdio>
//#include <random>
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifdef ARDUINO
#define ggprintf(...)
#else
#define ggprintf(...) \
g_fptr && fprintf(g_fptr, __VA_ARGS__)
#endif
//
// C interface