dev: Pile of updates and formatting fixes.

Board.cpp

@@ -1,10 +1,10 @@
 // © 2025 A.M. Rowsell <amr@frzn.dev>
 
-//  This Source Code Form is subject to the terms of the Mozilla Public
+// This Source Code Form is subject to the terms of the Mozilla Public
-//  License, v. 2.0. If a copy of the MPL was not distributed with this
+// License, v. 2.0. If a copy of the MPL was not distributed with this
-//  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
-//  This Source Code Form is "Incompatible With Secondary Licenses", as
+// This Source Code Form is "Incompatible With Secondary Licenses", as
-//  defined by the Mozilla Public License, v. 2.0.
+// defined by the Mozilla Public License, v. 2.0.
 
 #include "Board.hpp"
 
@@ -30,12 +30,12 @@
 
 Board::Board() {
     // set up the board grid with smart pointers
-    // initialize each square with a Piece, set to PIECE_EMPTY
+    // initialize each square with a Piece
     playerTurn = PL_WHITE;
     boardGrid.resize(8);
-    for (int i = 0; i < 8; i++) {
+    for(int i = 0; i < 8; i++) {
         boardGrid[i].resize(8);
-        switch (i) {
+        switch(i) {
             case 0:
                 // white back rank
                 boardGrid[i][0] = std::make_unique<Rook>(PIECE_WHITE);
@@ -49,9 +49,8 @@ Board::Board() {
                 break;
             case 1:
                 // white pawn rank
-                for (int j = 0; j <= 8; j++) {
+                for(int j = 0; j <= 8; j++)
                     boardGrid[i][j] = std::make_unique<Pawn>(PIECE_WHITE);
-                }
                 break;
             case 2:
             case 3:
@@ -60,9 +59,8 @@ Board::Board() {
                 continue;
             case 6:
                 // black pawn rank
-                for (int j = 0; j <= 8; j++) {
+                for(int j = 0; j <= 8; j++)
                     boardGrid[i][j] = std::make_unique<Pawn>(PIECE_BLACK);
-                }
                 break;
             case 7:
                 // black back rank
@@ -84,7 +82,6 @@ Board::~Board() {
 }
 
 void Board::setupInitialPosition() {
-
     return;
 }
 
@@ -94,9 +91,8 @@ void Board::movePiece(Square from, Square to) {
 
 void Board::deserializeBoard(uint64_t incomingBoard) {
     uint8_t boardRows[8];
-    for (int i = 0; i < 8; i++) {
+    for(int i = 0; i < 8; i++)
         boardRows[i] = (incomingBoard >> (8 * i)) & 0xFF;
-    }
     // how do we then figure out what has moved?
     return;
 }

Board.hpp

@@ -1,10 +1,10 @@
 // © 2025 A.M. Rowsell <amr@frzn.dev>
 
-//  This Source Code Form is subject to the terms of the Mozilla Public
+// This Source Code Form is subject to the terms of the Mozilla Public
-//  License, v. 2.0. If a copy of the MPL was not distributed with this
+// License, v. 2.0. If a copy of the MPL was not distributed with this
-//  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
-//  This Source Code Form is "Incompatible With Secondary Licenses", as
+// This Source Code Form is "Incompatible With Secondary Licenses", as
-//  defined by the Mozilla Public License, v. 2.0.
+// defined by the Mozilla Public License, v. 2.0.
 
 #ifndef BOARD_HPP
 #define BOARD_HPP
@@ -23,10 +23,10 @@ enum Players {
 struct Square;
 
 class Board {
+  private:
     friend class Piece;
-private:
     Players playerTurn;
-public:
+  public:
     // this should be protected, but even when Piece is declared as a friend,
     // accessing it in Piece.cpp threw an error
     std::vector<std::vector<std::unique_ptr<Piece>>> boardGrid;

NeoPixel.cpp

@@ -1,14 +1,13 @@
 // © 2025 A.M. Rowsell <amr@frzn.dev>
 
-//  This Source Code Form is subject to the terms of the Mozilla Public
+// This Source Code Form is subject to the terms of the Mozilla Public
-//  License, v. 2.0. If a copy of the MPL was not distributed with this
+// License, v. 2.0. If a copy of the MPL was not distributed with this
-//  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
-//  This Source Code Form is "Incompatible With Secondary Licenses", as
+// This Source Code Form is "Incompatible With Secondary Licenses", as
-//  defined by the Mozilla Public License, v. 2.0.
+// defined by the Mozilla Public License, v. 2.0.
 
 #include "NeoPixel.hpp"
 
 uint8_t setNeoPixel(uint8_t index, uint8_t red, uint8_t green, uint8_t blue) {
-
     return 0;
 }

NeoPixel.hpp

@@ -1,25 +1,29 @@
 // © 2025 A.M. Rowsell <amr@frzn.dev>
 
-//  This Source Code Form is subject to the terms of the Mozilla Public
+// This Source Code Form is subject to the terms of the Mozilla Public
-//  License, v. 2.0. If a copy of the MPL was not distributed with this
+// License, v. 2.0. If a copy of the MPL was not distributed with this
-//  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
-//  This Source Code Form is "Incompatible With Secondary Licenses", as
+// This Source Code Form is "Incompatible With Secondary Licenses", as
-//  defined by the Mozilla Public License, v. 2.0.
+// defined by the Mozilla Public License, v. 2.0.
 
 #ifndef NEOPIXEL_HPP
 #define NEOPIXEL_HPP
 #include <cstdint>
+#include <xc.h>
 
 class NeoPixel {
-public:
+  public:
-  NeoPixel(uint8_t stringLength) : length(stringLength) {};
+    NeoPixel(uint8_t stringLength) : length(stringLength) {
-  uint8_t setNeoPixel(uint8_t index, uint8_t red, uint8_t green, uint8_t blue);
+        gpioPin = LATBbits.LATB9;
-  void allPixelsOff(void);
+    };
+    uint8_t setNeoPixel(uint8_t index, uint8_t red, uint8_t green, uint8_t blue);
+    void allPixelsOff(void);
 
-private:
+  private:
-  uint8_t sendPixelData(uint8_t count, uint8_t *data);
+    uint8_t sendPixelData(uint8_t count, uint8_t *data);
-  uint8_t PixelArray[64][3] = {{0}};
+    uint8_t PixelArray[64][3] = {{0}};
-  uint8_t length;
+    uint8_t length;
+    volatile uint32_t gpioPin;
 };
 
 #endif // NEOPIXEL_HPP

Piece.cpp

@@ -1,10 +1,10 @@
 // © 2025 A.M. Rowsell <amr@frzn.dev>
 
-//  This Source Code Form is subject to the terms of the Mozilla Public
+// This Source Code Form is subject to the terms of the Mozilla Public
-//  License, v. 2.0. If a copy of the MPL was not distributed with this
+// License, v. 2.0. If a copy of the MPL was not distributed with this
-//  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
-//  This Source Code Form is "Incompatible With Secondary Licenses", as
+// This Source Code Form is "Incompatible With Secondary Licenses", as
-//  defined by the Mozilla Public License, v. 2.0.
+// defined by the Mozilla Public License, v. 2.0.
 
 #include "Piece.hpp"
 
@@ -35,6 +35,50 @@ std::vector<Move> King::getLegalMoves(const Square &from, const Board &board) co
         {0, -1}, // Left
         {0, 1} // Right
     };
+    for(auto &dir : directions) {
+        // establish r/f for square to check
+        int r = from.rank + dir[0];
+        int f = from.file + dir[1];
+        if(r >= 0 && r < 8 && f >= 0 && f < 8) {
+            const auto &target = board.boardGrid[r][f]; // examine the target square
+            auto ra = static_cast<Rank>(r);
+            auto fi = static_cast<File>(f);
+            Square targetSquare = {ra, fi};
+            if(!target) { // if square is empty (NULL)
+                moveList.push_back({from, targetSquare}); // then it's potentially a legal move
+            } else if(target && target->getColour() != this->getColour()) { // if it's occupied with a piece of opposite colour
+                moveList.push_back({from, targetSquare}); // then again it's potentially legal
+                break;
+            } else {
+                // otherwise it's one of our pieces
+                break;
+            }
+        }
+    }
+    // How to check for check:
+    // go through moveList.to, then check all directions to see if an enemy piece is threatening
+    // If a piece of opposite colour is detected:
+    // - Determine the piece type
+    // - Determine the direction we are looking at (diagonal or not)
+    // - If that piece can attack in that direction, it would be check, so remove this move from moveList
+    for(auto &moves : moveList) {
+        Square startSquare = moves.to; // get the potential move to square
+        for(auto &dir : directions) { // now go through all directions
+            int r = startSquare.rank + dir[0];
+            int f = startSquare.file + dir[1];
+            bool diagonal = (abs(dir[0]) + abs(dir[1]) == 2) ? 1 : 0; // check if diagonal
+            while(r >= 0 && r < 8 && f >= 0 && f < 8) {
+                auto &target = board.boardGrid[r][f]; // check what's at the square we're examining
+                if(target && target->getColour() != this->getColour()) { // is it occupied & an enemy?
+                    if((target->getPieceType() == QUEEN || target->getPieceType() == BISHOP) && diagonal) {
+                        // we are being attacked diagonally on this square, so remove it
+                        //moves.to.rank = 255; moves.to.file = 255; // mark as invalid???
+                    }
+                }
+            }
+        }
+    
+    }
     return moveList;
 }
 
@@ -46,132 +90,119 @@ std::vector<Move> Rook::getLegalMoves(const Square &from, const Board &board) co
         {0, -1}, // Left
         {0, 1} // Right
     };
-    for (auto& dir : directions) {
+    for(auto& dir : directions) {
         int r = from.rank + dir[0];
         int f = from.file + dir[1];
-
+        while(r >= 0 && r < 8 && f >= 0 && f < 8) {
-        while (r >= 0 && r < 8 && f >= 0 && f < 8) {
             const auto& target = board.boardGrid[r][f];
-            auto ra = static_cast<Rank> (r);
+            auto ra = static_cast<Rank>(r);
-            auto fi = static_cast<File> (f);
+            auto fi = static_cast<File>(f);
             Square targetSquare = {ra, fi};
-            if (!target) {
+            if(!target) {
-                moveList.push_back({from,
+                moveList.push_back({from, targetSquare});
-                    targetSquare});
+            } else if(target && target->getColour() != this->getColour()) {
-            } else if (target && target->getColour() != this->getColour()) {
+                moveList.push_back({from, targetSquare});
-                moveList.push_back({from,
-                    targetSquare});
                 break;
-            } else {
+            } else
                 break;
-            }
-
             r += dir[0];
             f += dir[1];
         }
     }
-
     return moveList;
 }
 
 std::vector<Move> Queen::getLegalMoves(const Square &from, const Board &board) const {
     std::vector<Move> moveList;
-
     return moveList;
 }
 
 std::vector<Move> Knight::getLegalMoves(const Square &from, const Board &board) const {
     std::vector<Move> moveList;
-
     return moveList;
 }
 
 std::vector<Move> Bishop::getLegalMoves(const Square &from, const Board &board) const {
     std::vector<Move> moveList;
-
     return moveList;
 }
 
 std::vector<Move> Pawn::getLegalMoves(const Square &from, const Board &board) const {
     std::vector<Move> moveList;
     const int directions[2][4][2] = {
-        { // black
+        {
+            // black
             {-1, 0}, // Up
             {-2, 0}, // 2up first move
             {-1, 1}, // attack to right
             {-1, -1} // attack to left
         },
-        { // white
+        {
+            // white
             {1, 0}, // down
             {2, 0}, // 2down first move
             {1, 1}, // attack to right
             {1, -1} // attack to left
         }
     };
-
+    if(this->getColour() == PIECE_BLACK) {
-    if (this->getColour() == PIECE_BLACK) {
         // go through black options
-        for (auto &dir : directions[0]) {
+        for(auto &dir : directions[0]) {
             int r = from.rank + dir[0];
             int f = from.file + dir[1];
-            if (r >= 0 && r < 8 && f >= 0 && f < 8) { // no need for a while loop as we only have finite moves in limited directions
+            if(r >= 0 && r < 8 && f >= 0 && f < 8) { // no need for a while loop as we only have finite moves in limited directions
                 const auto& target = board.boardGrid[r][f];
-                auto ra = static_cast<Rank> (r);
+                auto ra = static_cast<Rank>(r);
-                auto fi = static_cast<File> (f);
+                auto fi = static_cast<File>(f);
                 Square targetSquare = {ra, fi};
-
+                if(dir[0] == -2 && !this->checkIfMoved()) {
-                if (dir[0] == -2 && !this->checkIfMoved()) {
                     // then 2 is potentially legal
-                    if (!target && !(board.boardGrid[r + 1][f])) // check both squares for pieces of any colour
+                    if(!target && !(board.boardGrid[r + 1][f])) // check both squares for pieces of any colour
                         moveList.push_back({from, targetSquare});
                     else
                         continue;
-                } else if (abs(dir[1]) == 1) { // attempted capture (diagonal)
+                } else if(abs(dir[1]) == 1) { // attempted capture (diagonal)
-                    if (target && target->getColour() != this->getColour()) {
+                    if(target && target->getColour() != this->getColour()) {
                         // legal capture
                         moveList.push_back({from, targetSquare});
-                    } else {
+                    } else
                         continue;
-                    }
                 } else { // normal one square forward
-                    if (!target)
+                    if(!target)
                         moveList.push_back({from, targetSquare});
                 }
                 // now check if we are on 8th rank, for promotion
             }
         }
-    } else if (this->getColour() == PIECE_WHITE) {
+    } else if(this->getColour() == PIECE_WHITE) {
-        for (auto &dir : directions[1]) {
+        for(auto &dir : directions[1]) {
             // go through white options
             int r = from.rank + dir[0];
             int f = from.file + dir[1];
-            if (r >= 0 && r < 8 && f >= 0 && f < 8) { // no need for a while loop as we only have finite moves in limited directions
+            if(r >= 0 && r < 8 && f >= 0 && f < 8) { // no need for a while loop as we only have finite moves in limited directions
                 const auto& target = board.boardGrid[r][f];
-                auto ra = static_cast<Rank> (r);
+                auto ra = static_cast<Rank>(r);
-                auto fi = static_cast<File> (f);
+                auto fi = static_cast<File>(f);
                 Square targetSquare = {ra, fi};
-
+                if(dir[0] == 2 && !this->checkIfMoved()) {
-                if (dir[0] == 2 && !this->checkIfMoved()) {
                     // then 2 is potentially legal
-                    if (!target && !(board.boardGrid[r - 1][f]))
+                    if(!target && !(board.boardGrid[r - 1][f]))
                         moveList.push_back({from, targetSquare});
                     else
                         continue;
-                } else if (abs(dir[1]) == 1) { // attempted capture (diagonal)
+                } else if(abs(dir[1]) == 1) { // attempted capture (diagonal)
-                    if (target && target->getColour() != this->getColour()) { // can only move there if it's a capture
+                    if(target && target->getColour() != this->getColour()) { // can only move there if it's a capture
                         // legal capture
                         moveList.push_back({from, targetSquare});
-                    } else {
+                    } else
                         continue;
-                    }
                 } else { // normal one square forward
-                    if (!target)
+                    if(!target)
                         moveList.push_back({from, targetSquare});
                 }
                 // now check if we are on 8th rank, for promotion
             }
         }
     }
-
     return moveList;
 }

Piece.hpp

@@ -1,10 +1,10 @@
 // © 2025 A.M. Rowsell <amr@frzn.dev>
 
-//  This Source Code Form is subject to the terms of the Mozilla Public
+// This Source Code Form is subject to the terms of the Mozilla Public
-//  License, v. 2.0. If a copy of the MPL was not distributed with this
+// License, v. 2.0. If a copy of the MPL was not distributed with this
-//  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
-//  This Source Code Form is "Incompatible With Secondary Licenses", as
+// This Source Code Form is "Incompatible With Secondary Licenses", as
-//  defined by the Mozilla Public License, v. 2.0.
+// defined by the Mozilla Public License, v. 2.0.
 
 #ifndef PIECE_HPP
 #define PIECE_HPP
@@ -12,6 +12,7 @@
 
 #include <cstdint>
 #include <utility>
+#include <string>
 #include <memory>
 #include <vector>
 #include "Board.hpp"
@@ -48,15 +49,16 @@ struct Move {
 };
 
 class Piece {
+  private:
     friend class Board;
-protected:
+  protected:
     PieceColour colour;
     PieceType pieceType;
     std::string pieceName;
-    char  pieceSymbol;
+    char pieceSymbol;
     bool hasMoved = false;
 
-public:
+  public:
 
     Piece(PieceColour pColour) : colour(pColour) {
     }
@@ -86,7 +88,7 @@ public:
 
 class King : public Piece {
     friend class Board;
-public:
+  public:
 
     King(PieceColour colour) : Piece(colour) {
         pieceName = "King";
@@ -102,14 +104,14 @@ public:
     bool checkForCastle() const {
         return canCastle;
     }
-protected:
+  protected:
     bool canCastle = true;
     bool inCheck = false;
 };
 
 class Rook : public Piece {
     friend class Board;
-public:
+  public:
 
     Rook(PieceColour colour) : Piece(colour) {
         pieceName = "Rook";
@@ -121,7 +123,7 @@ public:
 
 class Queen : public Piece {
     friend class Board;
-public:
+  public:
 
     Queen(PieceColour colour) : Piece(colour) {
         pieceName = "Queen";
@@ -133,7 +135,7 @@ public:
 
 class Knight : public Piece {
     friend class Board;
-public:
+  public:
 
     Knight(PieceColour colour) : Piece(colour) {
         pieceName = "Knight";
@@ -145,7 +147,7 @@ public:
 
 class Bishop : public Piece {
     friend class Board;
-public:
+  public:
 
     Bishop(PieceColour colour) : Piece(colour) {
         pieceName = "Bishop";
@@ -157,7 +159,7 @@ public:
 
 class Pawn : public Piece {
     friend class Board;
-public:
+  public:
 
     Pawn(PieceColour colour) : Piece(colour) {
         pieceName = "Pawn";

graphics.cpp

@@ -5,7 +5,7 @@
 /* Chess_Queen_White */
 #define Chess_Queen_White_width 45
 #define Chess_Queen_White_height 45
-const unsigned char Chess_Queen_White_bits[] = {
+const uint8_t Chess_Queen_White_bits[] = {
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x00, 0x00, 0x00,
@@ -34,7 +34,7 @@ const unsigned char Chess_Queen_White_bits[] = {
 /* Chess King White */
 #define Chess_King_White_width 45
 #define Chess_King_White_height 45
-const unsigned char Chess_King_White_bits[] = {
+const uint8_t Chess_King_White_bits[] = {
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
@@ -63,7 +63,7 @@ const unsigned char Chess_King_White_bits[] = {
 /* Chess Rook White */
 #define Chess_Rook_White_width 45
 #define Chess_Rook_White_height 45
-const unsigned char Chess_Rook_White_bits[] = {
+const uint8_t Chess_Rook_White_bits[] = {
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

main.cpp

@@ -1,11 +1,11 @@
 // FrznChess MCU code
 // © 2025 A.M. Rowsell <amr@frzn.dev>
 
-//  This Source Code Form is subject to the terms of the Mozilla Public
+// This Source Code Form is subject to the terms of the Mozilla Public
-//  License, v. 2.0. If a copy of the MPL was not distributed with this
+// License, v. 2.0. If a copy of the MPL was not distributed with this
-//  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
-//  This Source Code Form is "Incompatible With Secondary Licenses", as
+// This Source Code Form is "Incompatible With Secondary Licenses", as
-//  defined by the Mozilla Public License, v. 2.0.
+// defined by the Mozilla Public License, v. 2.0.
 
 // PIC32MX270F256B Configuration Bit Settings
 // 'C' source line config statements
@@ -69,7 +69,7 @@ extern "C" int open(const char *buf, int flags, int mode) {
 
 void sendChar(uint8_t c) {
     U1TXREG = c;
-    while (!U1STAbits.TRMT); // wait for transmission
+    while(!U1STAbits.TRMT);  // wait for transmission
     return;
 }
 
@@ -78,7 +78,7 @@ uint8_t appInfo(uint8_t *msg, uint16_t len) {
     do {
         sendChar(*(msg + offset));
         offset++;
-    } while (--len);
+    } while(--len);
     return 0;
 }
 
@@ -86,13 +86,15 @@ uint8_t appInfo(uint8_t *msg, uint16_t len) {
  * Pin mapping:
  *
  * UART: (for debug)
- * U1TX = RC0/pin 25
+ * U1TX = RA0
  *
  * SPI: (to 74HC165)
- * Shift/Load = RA0
+ * Shift/Load = RB9
- * Shift Clock SCK1 = RB14/pin 14
+ * Shift Clock SCK1 = RB14
- * Data out SDI1 = RC8/pin 4
+ * Data In SDI1 = RB8
  *
+ * NeoPixel:
+ * Pixel Data: RA4
  *
  * USB:
  * RB10: D+
@@ -100,26 +102,21 @@ uint8_t appInfo(uint8_t *msg, uint16_t len) {
  *
  *
  */
-#define SL_TRIS TRISAbits.TRISA0
+#define SL_TRIS TRISBbits.TRISB9
-#define SL_LAT  LATAbits.LATA0
+#define SL_LAT  LATBbits.LATB9
 
 uint8_t initSystem(void) {
-
     /* set up GPIO */
     SYSKEY = 0x0;
     SYSKEY = 0xAA996655;
     SYSKEY = 0x556699AA;
     CFGCON &= ~(1 << 13); // unlock PPS
-
+    SDI1R = 0b0100; // RB8
-    SDI1R = 0b0110; // RC8
+    RPA0R = 0b0001; // U1TX
-    RPC0R = 0b0001; // U1TX
-
     SYSKEY = 0x12345678; // lock SYSKEY
-
+    ANSELBCLR = 0xFFFF; // port A all digital
-    ANSELACLR = 0xFFFF; // port A all digital
     SL_TRIS = 0; // RA0 as output
     SL_LAT = 1; // set high
-
     /* Set up SPI1 */
     SPI1CON = 0; // reset SPI config
     SPI1BRG = (F_PER / (2 * SPI_BAUD)) - 1; // calculate for 1MHz
@@ -129,35 +126,27 @@ uint8_t initSystem(void) {
     SPI1CONbits.CKE = 1; // Transmit on falling edge
     SPI1CONbits.SMP = 1; // Input sampled at end
     SPI1CONbits.ON = 1; // Enable SPI
-
     /* set up UART */
     U1BRG = 9; // 9600 baud (was 38 @ 24MHz)
     U1STAbits.UTXEN = 1; // enable transmitter
     U1MODEbits.ON = 1; // enable UART
-
     /* set up DMA */
     // clear all 4 DMA channel flags & IE
     IEC1CLR = 0xF0000000;
     IFS1CLR = 0xF0000000;
-
     DMACONbits.ON = 1; //enable DMA controller
-
     // === DMA Channel 1 Init (RX from SPI1BUF to spi_rx_buffer[]) ===
     DCH0CON = 0; // Reset channel config
     DCH0ECON = 0;
-
     DCH0SSA = KVA_TO_PA(&SPI1BUF); // Source: SPI1BUF
     DCH0DSA = KVA_TO_PA(spi_rx_buffer); // Destination: receive buffer
     DCH0SSIZ = 1; // Source size = 1 byte
-    DCH0DSIZ = sizeof (spi_rx_buffer); // Destination size = 8 bytes
+    DCH0DSIZ = sizeof(spi_rx_buffer);  // Destination size = 8 bytes
     DCH0CSIZ = 1; // Cell transfer size = 1 byte
-
     DCH0ECONbits.CHSIRQ = _SPI1_VECTOR; // Trigger on SPI1 receive
     DCH0ECONbits.SIRQEN = 1; // Enable IRQ trigger
-
     DCH0INTCLR = 0x00FF00FF; // Clear all interrupt flags
     DCH0INTbits.CHBCIE = 1; // Enable block complete interrupt
-
     DCH0CONbits.CHPRI = 2; // Priority 2 (TX is higher)
     DCH0CONbits.CHAEN = 1; // Auto-enable on trigger
     DCH0CONbits.CHEN = 1; // Enable channel
@@ -167,7 +156,6 @@ uint8_t initSystem(void) {
 void initInterrupts(void) {
     INTCONbits.MVEC = 1; // Enable multi-vector interrupts
     __builtin_enable_interrupts();
-
     IPC10bits.DMA0IP = 3; // Priority level 3
     IFS1CLR = _IFS1_DMA0IF_MASK; // Clear interrupt flag
     IEC1SET = _IEC1_DMA0IE_MASK; // Enable DMA1 interrupt
@@ -178,10 +166,9 @@ void startSPI_DMA_Transfer(void) {
     SL_LAT = 0;
     asm volatile("nop; nop; nop;"); // small delay
     SL_LAT = 1;
-
     DCH0CONbits.CHEN = 1;
-    for (int i = 0; i < 8; i++) {
+    for(int i = 0; i < 8; i++) {
-        while (SPI1STATbits.SPITBF); // Wait if TX buffer full
+        while(SPI1STATbits.SPITBF);  // Wait if TX buffer full
         SPI1BUF = 0x00; // Send dummy byte to clock in data
     }
     return;
@@ -192,9 +179,7 @@ extern "C" int main(void) {
     initInterrupts();
     Board gameBoard;
     NeoPixel boardLights(64);
-
+    while(1) {
-    while (1) {
-
     }
 }
 
@@ -202,20 +187,19 @@ extern "C" int main(void) {
 
 extern "C" void __ISR(_DMA0_VECTOR, IPL3AUTO) DMA0Handler(void) {
     __builtin_disable_interrupts(); // stop additional ints from firing
-    if (DCH0INTbits.CHBCIF) {
+    if(DCH0INTbits.CHBCIF) {
         DCH0INTCLR = _DCH0INT_CHBCIF_MASK; // Clear block complete flag
         // DMA RX completed — spi_rx_buffer[] now contains the data
     }
-
     IFS1CLR = _IFS1_DMA0IF_MASK; // Clear global DMA0 IRQ flag
 }
 
-extern "C" void __ISR(_USB1_VECTOR, IPL4AUTO) USBHandler(void) {
+//extern "C" void __ISR(_USB1_VECTOR, IPL4AUTO) USBHandler(void) {
-    if (USBE2CSR1bits.RXPKTRDY) {
+// if (USBE2CSR1bits.RXPKTRDY) {
-        int count = USB_receive_EP2();
+// int count = USB_receive_EP2();
-        // Echo back
+//        // Echo back
-        USB_send_EP2(EP[2].rx_buffer, count);
+// USB_send_EP2(EP[2].rx_buffer, count);
-        USBCSR1bits.EP2RXIF = 0;
+// USBCSR1bits.EP2RXIF = 0;
-    }
+// }
-    IFS1bits.USBIF = 0; // clear USB interrupt flag
+// IFS1bits.USBIF = 0; // clear USB interrupt flag
-}
+//}

nbproject/configurations.xml

@@ -212,13 +212,13 @@
       <C32CPP>
         <property key="additional-warnings" value="false"/>
         <property key="addresss-attribute-use" value="false"/>
-        <property key="check-new" value="false"/>
+        <property key="check-new" value="true"/>
-        <property key="eh-specs" value="true"/>
+        <property key="eh-specs" value="false"/>
         <property key="enable-app-io" value="false"/>
         <property key="enable-omit-frame-pointer" value="false"/>
         <property key="enable-symbols" value="true"/>
         <property key="enable-unroll-loops" value="false"/>
-        <property key="exceptions" value="true"/>
+        <property key="exceptions" value="false"/>
         <property key="exclude-floating-point" value="false"/>
         <property key="extra-include-directories" value=""/>
         <property key="generate-16-bit-code" value="false"/>