From b765f65d9c520a204cf7c620e5d0106dd7f08faf Mon Sep 17 00:00:00 2001
From: KemoNine <kemonine@kemonine.info>
Date: Mon, 7 Sep 2020 23:53:06 -0400
Subject: [PATCH] Add ring buffer for text display on LCD ; add some debug code
 to verify what keys are availble for use ; need to sort symbol key still

---
 serial_debugger.ino | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/serial_debugger.ino b/serial_debugger.ino
index 4d86565..1ed617c 100644
--- a/serial_debugger.ino
+++ b/serial_debugger.ino
@@ -6,6 +6,7 @@
 #include <Adafruit_GFX.h>
 #include <Adafruit_ILI9341.h>
 #include <BBQ10Keyboard.h>
+#include <CircularBuffer.h>
 
 // Debugging via serial monitor (don't turn this on unless you're hacking on the firmware code)
 #define DEBUG true
@@ -22,6 +23,7 @@ Adafruit_ILI9341 tft(TFT_CS, TFT_DC);
 #include <Fonts/FreeMono9pt7b.h>
 #define CHARS_HORIZONTAL 28
 #define CHARS_ROWS 13
+CircularBuffer<char,364> textBuffer;
 
 // Keyboard
 BBQ10Keyboard keyboard;
@@ -106,6 +108,24 @@ void handlerKeyboard() {
     // Get keyboard event
     const BBQ10Keyboard::KeyEvent key = keyboard.keyEvent();
 
+    char output[28];
+    snprintf(output, 28, "key: '%c' (dec %d, hex %02x)", key.key, key.key, key.key);
+    for (int i=0; i<sizeof(output); i++) {
+      char toPush = output[i];
+      if (toPush != '\0') {
+        textBuffer.push(toPush);
+      }
+      else if (toPush == '\0') {
+        textBuffer.push('\n');
+        break;
+      }
+    }
+    
+    screenClear();
+    for (int i=0; i<textBuffer.size(); i++) {
+      tft.print(textBuffer[i]);
+    }
+
     // Pick color for signaling a key was pressed (short or long press)
     uint32_t keyboard_pixel_color = pixels_wing.Color(0, 0, 255);
     if (key.state == BBQ10Keyboard::StateLongPress) {