Merge pull request #2166 from jedgarpark/smpte-test

added NTSC SMPTE composite video code

Author: TheKitty

SMPTE_Color_Bars_Composite/.qtpy_esp32.test.only

@@ -0,0 +1,91 @@
+// SPDX-FileCopyrightText: 2022 John Park for Adafruit
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+/*
+ Adafruit NTSC SMPTE color bars (resolution is 256x224, colors are approximate at best)
+uses composite video generator library on ESP32 by Roger Cheng
+Connect GPIO25 (A0 on QT Py ESP32 Pico) to signal line, usually the center of composite video plug.
+Please disable PSRAM option before uploading to the board, otherwise there may be vertical jitter.
+*/
+
+#include <ESP_8_BIT_GFX.h>
+
+
+// Create an instance of the graphics library
+ESP_8_BIT_GFX videoOut(true /* = NTSC */, 8 /* = RGB332 color */);
+
+uint8_t WHITE = 0xFF ;
+uint8_t DIM_WHITE = 0xB6 ;
+uint8_t YELLOW =  0xF4 ;
+uint8_t TEAL = 0x1C ;
+uint8_t GREEN = 0x70 ; 
+uint8_t MAGENTA =  0x83 ;
+uint8_t RED = 0x82 ; 
+uint8_t BLUE =  0x0B ;
+uint8_t DARK_BLUE = 0x06 ;
+uint8_t PURPLE = 0x23 ;
+uint8_t BLACK =  0x00 ;
+uint8_t GRAY =  0x24 ;
+uint8_t LIGHT_GRAY = 0x29 ;
+
+uint8_t height_tall = 149 ;
+uint8_t height_squat = 19 ;
+uint8_t height_med = 56 ;
+
+uint8_t width_med = 36 ; 
+uint8_t width_large = 46;
+uint8_t width_skinny = 12 ;
+
+uint8_t row2_y = height_tall ;
+uint8_t row3_y = height_tall + height_squat ;
+
+
+void setup() {
+  // Initial setup of graphics library
+  videoOut.begin();
+}
+
+void loop() {
+    // Wait for the next frame to minimize chance of visible tearing
+    videoOut.waitForFrame();
+    
+    // Clear screen
+    videoOut.fillScreen(0);
+
+    // Draw  rectangles
+    //row 1
+    videoOut.fillRect(0, 0, width_med, height_tall, DIM_WHITE);
+    videoOut.fillRect(width_med, 0, width_med, height_tall, YELLOW);
+    videoOut.fillRect(width_med*2, 0, width_med, height_tall, TEAL);
+    videoOut.fillRect(width_med*3, 0, width_med, height_tall, GREEN);
+    videoOut.fillRect(width_med*4, 0, width_med, height_tall, MAGENTA);
+    videoOut.fillRect(width_med*5, 0, width_med, height_tall, RED);
+    videoOut.fillRect(width_med*6, 0, width_med, height_tall, BLUE);
+    //row 2
+    videoOut.fillRect(0, row2_y, width_med, height_squat, BLUE);
+    videoOut.fillRect(width_med, row2_y, width_med, height_squat, GRAY);
+    videoOut.fillRect(width_med*2, row2_y, width_med, height_squat, MAGENTA); 
+    videoOut.fillRect(width_med*3, row2_y, width_med, height_squat, GRAY); 
+    videoOut.fillRect(width_med*4, row2_y, width_med, height_squat, TEAL); 
+    videoOut.fillRect(width_med*5, row2_y, width_med, height_squat, GRAY); 
+    videoOut.fillRect(width_med*6, row2_y , width_med, height_squat, DIM_WHITE); 
+    //row 3
+    videoOut.fillRect(0, row3_y, width_large, height_med, DARK_BLUE);
+    videoOut.fillRect(width_large, row3_y, width_large, height_med, WHITE);   
+    videoOut.fillRect(width_large*2, row3_y, width_large, height_med, PURPLE);  
+    videoOut.fillRect(width_large*3, row3_y, width_large, height_med, GRAY); 
+    videoOut.fillRect(width_large*4, row3_y, width_skinny, height_med, BLACK);
+    videoOut.fillRect(width_large*4+width_skinny, row3_y, width_skinny, height_med, GRAY);
+    videoOut.fillRect(((width_large*4)+(width_skinny*2)), row3_y , width_skinny, height_med, LIGHT_GRAY);
+    videoOut.fillRect(width_med*6, row3_y , width_med, height_med, GRAY);
+   
+
+    // Draw text
+     videoOut.setCursor(144, 180);
+     videoOut.setTextColor(0xFF);
+     videoOut.print("Adafruit NTSC");
+     videoOut.setCursor(144, 190);
+     videoOut.setTextColor(0xFF);
+     videoOut.print("composite video");
+     
+}