添加一些关于midi播放的项目

Midi/music-box-nv32-master/download.py

@@ -0,0 +1,118 @@
+import serial
+import os
+import math
+import argparse
+import struct
+from time import sleep
+import serial.tools.list_ports
+
+BLOCK_SIZE = 512  # 128 for parts with >8k flash
+
+
+def autoFindPort():
+    portList = serial.tools.list_ports.comports()
+    pid = "7523"
+    vid = "1A86"
+    port = None
+    for p in portList:
+        if pid and vid in p.hwid:
+            port = p.device
+    return port
+
+
+def sendCmdPacket(ser, cmd, cmdData=b''):
+    frameLen = 1+len(cmdData)
+    frameBytes = struct.pack('<HHB%ds' % len(
+        cmdData), 0x776e, frameLen, cmd, cmdData)
+    ser.write(frameBytes)
+    ser.flush()
+
+
+def recvCmdReply(ser, cmd):
+    frameHeader = ser.read(4)
+    if len(frameHeader) != 4:
+        print('Invalid ACK Len!')
+        return b''
+    else:
+        frameId, frameLen = struct.unpack('<HH', frameHeader)
+        if frameId != 0x776E:
+            print('Invalid Frame ID!')
+            return b''
+    frameData = ser.read(frameLen)
+    cmdReply, cmdReplyData = struct.unpack('<B%ds' % (frameLen-1), frameData)
+    if cmdReply != cmd:
+        return b''
+    return cmdReplyData
+
+
+def readFlashSize(ser):
+    sendCmdPacket(ser, 0x04)
+    replyData = recvCmdReply(ser, 0x04)
+    if replyData != b'':
+        return struct.unpack('<I', replyData)[0]
+    else:
+        return 0
+
+
+def startFlash(ser):
+    sendCmdPacket(ser, 0x01)
+    replyData = recvCmdReply(ser, 0x01)
+    if replyData == b'':
+        return True
+    else:
+        return False
+
+
+def endFlash(ser):
+    sendCmdPacket(ser, 0x03)
+    replyData = recvCmdReply(ser, 0x03)
+    if replyData == b'':
+        return True
+    else:
+        return False
+
+
+def bootloader_exec(port, baud):
+    ser = serial.Serial(port, baud, timeout=2.0)
+    startFlash(ser)
+    flashSize = readFlashSize(ser)
+    print('Flash size: ', flashSize)
+    data = open(FILE, 'rb')
+    total = 0
+    with data as f:
+        flash_cmd = 0x02
+        chunkIndex = 0
+        chunk = bytearray(f.read(BLOCK_SIZE))
+        while chunk:
+            total += len(chunk)
+            if total > flashSize:
+                print('Exceed flash size!!')
+                break
+            print('Written: ', total)
+            cmdData = bytearray(struct.pack('<HH', chunkIndex, len(chunk)))
+            cmdData.extend(chunk)
+            sendCmdPacket(ser, flash_cmd, cmdData)
+            replyData = recvCmdReply(ser, flash_cmd)
+            recvChunkIndex, recvChunkLen = struct.unpack('<HH', replyData)
+            if recvChunkIndex != chunkIndex or recvChunkLen != len(chunk):
+                print('Wrong ACK!')
+                break
+            chunkIndex += 1
+            chunk = bytearray(f.read(BLOCK_SIZE))
+    endFlash(ser)
+    ser.close()
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(
+        description='music box score data downloader')
+    port = autoFindPort()
+    if port == None:
+        port = 'COM6'
+    parser.add_argument('--port', '-p', default=port)
+    parser.add_argument('--baud', '-b', default=115200)
+    parser.add_argument('file', help='firmware in binary format')
+    args = parser.parse_args()
+    FILE = args.file
+    print('Serial Port: ',port)
+    bootloader_exec(args.port, args.baud)