From cac83243269f06f67949373fd6662905c423e1bb Mon Sep 17 00:00:00 2001
From: Georgi Gerganov <ggerganov@gmail.com>
Date: Sun, 3 Jul 2022 17:59:41 +0300
Subject: [PATCH] tmp

---
 examples/esp32-rx/esp32-rx.ino | 73 +++++++++++++++++++++++++++++-----
 1 file changed, 62 insertions(+), 11 deletions(-)

diff --git a/examples/esp32-rx/esp32-rx.ino b/examples/esp32-rx/esp32-rx.ino
index 5c8b6a0..2f7a248 100644
--- a/examples/esp32-rx/esp32-rx.ino
+++ b/examples/esp32-rx/esp32-rx.ino
@@ -1,15 +1,34 @@
 #include "ggwave/ggwave.h"
 
+#include <soc/adc_channel.h>
 #include <driver/i2s.h>
 
+#include <SPI.h>
+#include <Wire.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_SSD1306.h>
+
+#define SCREEN_WIDTH 128 // OLED display width, in pixels
+#define SCREEN_HEIGHT 32 // OLED display height, in pixels
+
+// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
+// The pins for I2C are defined by the Wire-library. 
+// On an arduino UNO:       A4(SDA), A5(SCL)
+// On an arduino MEGA 2560: 20(SDA), 21(SCL)
+// On an arduino LEONARDO:   2(SDA),  3(SCL), ...
+#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
+#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
+Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
+
+
 // global GGwave instance
 GGWave ggwave;
 
 using TSample = int16_t;
 const size_t kSampleSize_bytes = sizeof(TSample);
 
-const int sampleRate = 12000;
-const int samplesPerFrame = 256;
+const int sampleRate = 24000;
+const int samplesPerFrame = 512;
 
 TSample sampleBuffer[samplesPerFrame];
 
@@ -37,6 +56,28 @@ void setup() {
     while (!Serial);
     Serial.println(F("GGWave test for ESP32"));
 
+    // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
+    if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
+        Serial.println(F("SSD1306 allocation failed"));
+        for(;;); // Don't proceed, loop forever
+    }
+
+    // Show initial display buffer contents on the screen --
+    // the library initializes this with an Adafruit splash screen.
+    display.display();
+    delay(2000); // Pause for 2 seconds
+
+    // Clear the buffer
+    display.clearDisplay();
+
+    display.setTextSize(2);      // Normal 1:1 pixel scale
+    display.setTextColor(SSD1306_WHITE); // Draw white text
+    display.setCursor(0, 0);     // Start at top-left corner
+    display.cp437(true);         // Use full 256 char 'Code Page 437' font
+    display.println(F("GGWave!"));
+
+    display.display();
+
     {
         Serial.println(F("Trying to create ggwave instance"));
 
@@ -57,16 +98,16 @@ void setup() {
         //GGWave::Protocols::tx().toggle(GGWAVE_PROTOCOL_DT_NORMAL,  true);
         //GGWave::Protocols::tx().toggle(GGWAVE_PROTOCOL_DT_FAST,    true);
         //GGWave::Protocols::tx().toggle(GGWAVE_PROTOCOL_DT_FASTEST, true);
-        GGWave::Protocols::tx().toggle(GGWAVE_PROTOCOL_MT_NORMAL,  true);
-        GGWave::Protocols::tx().toggle(GGWAVE_PROTOCOL_MT_FAST,    true);
+        //GGWave::Protocols::tx().toggle(GGWAVE_PROTOCOL_MT_NORMAL,  true);
+        //GGWave::Protocols::tx().toggle(GGWAVE_PROTOCOL_MT_FAST,    true);
         GGWave::Protocols::tx().toggle(GGWAVE_PROTOCOL_MT_FASTEST, true);
 
         GGWave::Protocols::rx().disableAll();
         //GGWave::Protocols::rx().toggle(GGWAVE_PROTOCOL_DT_NORMAL,  true);
         //GGWave::Protocols::rx().toggle(GGWAVE_PROTOCOL_DT_FAST,    true);
-        //GGWave::Protocols::rx().toggle(GGWAVE_PROTOCOL_DT_FASTEST, true);
-        GGWave::Protocols::rx().toggle(GGWAVE_PROTOCOL_MT_NORMAL,  true);
-        GGWave::Protocols::rx().toggle(GGWAVE_PROTOCOL_MT_FAST,    true);
+        GGWave::Protocols::rx().toggle(GGWAVE_PROTOCOL_DT_FASTEST, true);
+        //GGWave::Protocols::rx().toggle(GGWAVE_PROTOCOL_MT_NORMAL,  true);
+        //GGWave::Protocols::rx().toggle(GGWAVE_PROTOCOL_MT_FAST,    true);
         GGWave::Protocols::rx().toggle(GGWAVE_PROTOCOL_MT_FASTEST, true);
 
         ggwave.prepare(p);
@@ -122,6 +163,10 @@ void loop() {
             s1 = s0 ^ s1;
             s0 = s0 ^ s1;
         }
+
+        //for (int i = 0; i < samples_read; i++) {
+        //    Serial.println(sampleBuffer[i]);
+        //}
     }
 
     auto tStart = millis();
@@ -148,9 +193,15 @@ void loop() {
         Serial.println(F(" bytes:"));
 
         Serial.println((char *) result.data());
-    }
 
-    //for (int i = 0; i < samples_read; i++) {
-    //    Serial.println(samples[i]);
-    //}
+        display.clearDisplay();
+
+        display.setTextSize(2);      // Normal 1:1 pixel scale
+        display.setTextColor(SSD1306_WHITE); // Draw white text
+        display.setCursor(0, 0);     // Start at top-left corner
+        display.cp437(true);         // Use full 256 char 'Code Page 437' font
+        display.println((char *) result.data());
+
+        display.display();
+    }
 }