VirtualMatrixPanel test program

For library development validation purposes.

1 files changed, 189 insertions, 0 deletions

diff --git a/testing/baseline.hpp b/testing/baseline.hpp
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+++ b/testing/baseline.hpp
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+
+/**
+ * Calculate virtual->real co-ordinate mapping to underlying single chain of panels connected to ESP32.
+ * Updates the private class member variable 'coords', so no need to use the return value.
+ * Not thread safe, but not a concern for ESP32 sketch anyway... I think.
+ */
+// DO NOT CHANGE
+inline VirtualCoords VirtualMatrixPanelTest::getCoords_WorkingBaslineMarch2023(int16_t &virt_x, int16_t &virt_y)
+{
+    coords.x = coords.y = -1; // By defalt use an invalid co-ordinates that will be rejected by updateMatrixDMABuffer
+
+	if (virt_x < 0 || virt_x >= virtualResX || virt_y < 0 || virt_y >= virtualResY)
+	{ // Co-ordinates go from 0 to X-1 remember! otherwise they are out of range!
+		return coords;
+	}
+
+    // Do we want to rotate?
+    if (_rotate)
+    {
+        int16_t temp_x = virt_x;
+        virt_x = virt_y;
+        virt_y = virtualResY - 1 - temp_x;
+    }
+
+	int row  = (virt_y / panelResY); // 0 indexed
+	switch(panel_chain_type)
+	{
+			
+		case (CHAIN_TOP_RIGHT_DOWN): 
+		{
+            if ( (row % 2) == 1 ) 
+            { 	// upside down panel
+
+                //Serial.printf("Condition 1, row %d ", row);
+
+                // refersed for the row
+                coords.x = dmaResX - virt_x - (row*virtualResX);			
+
+                // y co-ord inverted within the panel
+                coords.y = panelResY - 1 - (virt_y % panelResY);	
+            
+
+            }
+            else
+            { 
+                //Serial.printf("Condition 2, row %d ", row);
+
+                coords.x =  ((vmodule_rows - (row+1))*virtualResX)+virt_x;
+                coords.y =  virt_y % panelResY;	
+                        
+            }
+
+		}
+			break;	
+
+
+		case (CHAIN_TOP_LEFT_DOWN): // OK -> modulus opposite of CHAIN_TOP_RIGHT_DOWN
+		{
+			if ( (row % 2) == 0 ) 
+			{ 	// refersed panel 
+
+                //Serial.printf("Condition 1, row %d ", row);
+				coords.x = dmaResX - virt_x - (row*virtualResX);			
+
+				// y co-ord inverted within the panel
+				coords.y = panelResY - 1 - (virt_y % panelResY);	
+
+			}
+			else
+			{ 
+                //Serial.printf("Condition 2, row %d ", row);
+				coords.x =  ((vmodule_rows - (row+1))*virtualResX)+virt_x;
+			    coords.y =  virt_y % panelResY;	
+						
+			}
+
+		}
+			break;	            
+			
+			
+
+
+		case (CHAIN_BOTTOM_LEFT_UP): 	// 
+		{
+            row = vmodule_rows - row - 1;
+		
+			if ( (row % 2) == 1 ) 
+			{ 	
+                // Serial.printf("Condition 1, row %d ", row);
+				coords.x =  ((vmodule_rows - (row+1))*virtualResX)+virt_x;
+				coords.y = virt_y % panelResY;	
+ 
+			}
+			else
+			{  // inverted panel                     
+
+                // Serial.printf("Condition 2, row %d ", row);
+				coords.x =  dmaResX - (row*virtualResX) - virt_x;         
+				coords.y = panelResY - 1 - (virt_y % panelResY);
+			}
+			
+		}
+			break;
+	
+		case (CHAIN_BOTTOM_RIGHT_UP): 	// OK -> modulus opposite of CHAIN_BOTTOM_LEFT_UP
+		{
+            row = vmodule_rows - row - 1;
+		
+			if ( (row % 2) == 0 ) 
+			{ 	// right side up
+
+                // Serial.printf("Condition 1, row %d ", row);
+				// refersed for the row
+				coords.x =  ((vmodule_rows - (row+1))*virtualResX)+virt_x;
+				coords.y = virt_y % panelResY;	
+ 
+			}
+			else
+			{  // inverted panel                     
+
+                // Serial.printf("Condition 2, row %d ", row);
+				coords.x =  dmaResX - (row*virtualResX) - virt_x;         
+				coords.y = panelResY - 1 - (virt_y % panelResY);
+			}
+			
+		}
+			break;
+						
+
+		default:
+            return coords;
+			break;
+			
+	} // end switch
+	
+
+
+  /* START: Pixel remapping AGAIN to convert TWO parallel scanline output that the
+   *        the underlying hardware library is designed for (because
+   *        there's only 2 x RGB pins... and convert this to 1/4 or something
+   */
+  if (panel_scan_rate == FOUR_SCAN_32PX_HIGH)
+  {
+    /* Convert Real World 'VirtualMatrixPanel' co-ordinates (i.e. Real World pixel you're looking at
+       on the panel or chain of panels, per the chaining configuration) to a 1/8 panels
+       double 'stretched' and 'squished' coordinates which is what needs to be sent from the
+       DMA buffer.
+
+       Note: Look at the FourScanPanel example code and you'll see that the DMA buffer is setup
+       as if the panel is 2 * W and 0.5 * H !
+    */
+
+    if ((virt_y & 8) == 0)
+    {
+      coords.x += ((coords.x / panelResX) + 1) * panelResX; // 1st, 3rd 'block' of 8 rows of pixels, offset by panel width in DMA buffer
+    }
+    else
+    {
+      coords.x += (coords.x / panelResX) * panelResX; // 2nd, 4th 'block' of 8 rows of pixels, offset by panel width in DMA buffer
+    }
+
+    // http://cpp.sh/4ak5u
+    // Real number of DMA y rows is half reality
+    // coords.y = (y / 16)*8 + (y & 0b00000111);
+    coords.y = (virt_y >> 4) * 8 + (virt_y & 0b00000111);
+
+  }
+  else if (panel_scan_rate == FOUR_SCAN_16PX_HIGH)
+  {
+    if ((virt_y & 8) == 0)
+    {
+      coords.x += (panelResX >> 2) * (((coords.x & 0xFFF0) >> 4) + 1); // 1st, 3rd 'block' of 8 rows of pixels, offset by panel width in DMA buffer
+    }
+    else
+    {
+      coords.x += (panelResX >> 2) * (((coords.x & 0xFFF0) >> 4)); // 2nd, 4th 'block' of 8 rows of pixels, offset by panel width in DMA buffer
+    }
+
+    if (virt_y < 32)
+      coords.y = (virt_y >> 4) * 8 + (virt_y & 0b00000111);
+    else
+    {
+      coords.y = ((virt_y - 32) >> 4) * 8 + (virt_y & 0b00000111);
+      coords.x += 256;
+    }
+  }
+
+  return coords;
+}