Try to dump banks (does not work yet)

src/Makefile

@@ -11,7 +11,8 @@ OBJS = main.o kernel.o minidexed.o config.o userinterface.o uimenu.o \
        sysexfileloader.o performanceconfig.o perftimer.o \
        effect_compressor.o effect_platervbstereo.o uibuttons.o midipin.o \
        arm_float_to_q23.o \
-       net/ftpdaemon.o net/ftpworker.o net/applemidi.o net/udpmidi.o net/mdnspublisher.o udpmididevice.o
+       net/ftpdaemon.o net/ftpworker.o net/applemidi.o net/udpmidi.o net/mdnspublisher.o udpmididevice.o \
+       midichunker.o
 
 OPTIMIZE = -O3
 

src/midichunker.cpp

@@ -0,0 +1,48 @@
+//
+// midichunker.cpp
+//
+// MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi
+// Copyright (C) 2022-25  The MiniDexed Team
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include "midichunker.h"
+#include <algorithm>
+
+MIDISysExChunker::MIDISysExChunker(const uint8_t* data, size_t length, size_t chunkSize)
+    : m_data(data), m_length(length), m_chunkSize(chunkSize), m_offset(0) {}
+
+bool MIDISysExChunker::hasNext() const {
+    return m_offset < m_length;
+}
+
+std::vector<uint8_t> MIDISysExChunker::next() {
+    if (!hasNext()) return {};
+    size_t remaining = m_length - m_offset;
+    size_t chunkLen = std::min(m_chunkSize, remaining);
+    // Only the last chunk should contain the final 0xF7
+    if (m_offset + chunkLen >= m_length && m_data[m_length-1] == 0xF7) {
+        chunkLen = m_length - m_offset;
+    } else if (m_offset + chunkLen > 0 && m_data[m_offset + chunkLen - 1] == 0xF7) {
+        chunkLen--;
+    }
+    std::vector<uint8_t> chunk(m_data + m_offset, m_data + m_offset + chunkLen);
+    m_offset += chunkLen;
+    return chunk;
+}
+
+void MIDISysExChunker::reset() {
+    m_offset = 0;
+}

src/midichunker.h

@@ -0,0 +1,37 @@
+//
+// midichunker.h
+//
+// MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi
+// Copyright (C) 2022-25  The MiniDexed Team
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#pragma once
+#include <cstddef>
+#include <vector>
+#include <cstdint>
+
+class MIDISysExChunker {
+public:
+    MIDISysExChunker(const uint8_t* data, size_t length, size_t chunkSize = 256);
+    bool hasNext() const;
+    std::vector<uint8_t> next();
+    void reset();
+private:
+    const uint8_t* m_data;
+    size_t m_length;
+    size_t m_chunkSize;
+    size_t m_offset;
+};