1 import os, struct, sys, time
\r
3 from serial import Serial
\r
4 from serial import SerialException
\r
6 import ispBase, intelHex
\r
8 class Stk500v2(ispBase.IspBase):
\r
13 self.progressCallback = None
\r
15 def connect(self, port = 'COM22', speed = 115200):
\r
16 if self.serial != None:
\r
19 self.serial = Serial(port, speed, timeout=1, writeTimeout=10000)
\r
20 except SerialException as e:
\r
21 raise ispBase.IspError("Failed to open serial port")
\r
23 raise ispBase.IspError("Unexpected error while connecting to serial port:" + port + ":" + str(sys.exc_info()[0]))
\r
26 #Reset the controller
\r
27 self.serial.setDTR(1)
\r
29 self.serial.setDTR(0)
\r
32 self.sendMessage([1])
\r
33 if self.sendMessage([0x10, 0xc8, 0x64, 0x19, 0x20, 0x00, 0x53, 0x03, 0xac, 0x53, 0x00, 0x00]) != [0x10, 0x00]:
\r
35 raise ispBase.IspError("Failed to enter programming mode")
\r
38 if self.serial != None:
\r
42 #Leave ISP does not reset the serial port, only resets the device, and returns the serial port after disconnecting it from the programming interface.
\r
43 # This allows you to use the serial port without opening it again.
\r
45 if self.serial != None:
\r
46 if self.sendMessage([0x11]) != [0x11, 0x00]:
\r
47 raise ispBase.IspError("Failed to leave programming mode")
\r
53 def isConnected(self):
\r
54 return self.serial != None
\r
56 def sendISP(self, data):
\r
57 recv = self.sendMessage([0x1D, 4, 4, 0, data[0], data[1], data[2], data[3]])
\r
60 def writeFlash(self, flashData):
\r
61 #Set load addr to 0, in case we have more then 64k flash we need to enable the address extension
\r
62 pageSize = self.chip['pageSize'] * 2
\r
63 flashSize = pageSize * self.chip['pageCount']
\r
64 if flashSize > 0xFFFF:
\r
65 self.sendMessage([0x06, 0x80, 0x00, 0x00, 0x00])
\r
67 self.sendMessage([0x06, 0x00, 0x00, 0x00, 0x00])
\r
69 loadCount = (len(flashData) + pageSize - 1) / pageSize
\r
70 for i in xrange(0, loadCount):
\r
71 recv = self.sendMessage([0x13, pageSize >> 8, pageSize & 0xFF, 0xc1, 0x0a, 0x40, 0x4c, 0x20, 0x00, 0x00] + flashData[(i * pageSize):(i * pageSize + pageSize)])
\r
72 if self.progressCallback != None:
\r
73 self.progressCallback(i + 1, loadCount*2)
\r
75 def verifyFlash(self, flashData):
\r
76 #Set load addr to 0, in case we have more then 64k flash we need to enable the address extension
\r
77 flashSize = self.chip['pageSize'] * 2 * self.chip['pageCount']
\r
78 if flashSize > 0xFFFF:
\r
79 self.sendMessage([0x06, 0x80, 0x00, 0x00, 0x00])
\r
81 self.sendMessage([0x06, 0x00, 0x00, 0x00, 0x00])
\r
83 loadCount = (len(flashData) + 0xFF) / 0x100
\r
84 for i in xrange(0, loadCount):
\r
85 recv = self.sendMessage([0x14, 0x01, 0x00, 0x20])[2:0x102]
\r
86 if self.progressCallback != None:
\r
87 self.progressCallback(loadCount + i + 1, loadCount*2)
\r
88 for j in xrange(0, 0x100):
\r
89 if i * 0x100 + j < len(flashData) and flashData[i * 0x100 + j] != recv[j]:
\r
90 raise ispBase.IspError('Verify error at: 0x%x' % (i * 0x100 + j))
\r
92 def sendMessage(self, data):
\r
93 message = struct.pack(">BBHB", 0x1B, self.seq, len(data), 0x0E)
\r
95 message += struct.pack(">B", c)
\r
99 message += struct.pack(">B", checksum)
\r
101 self.serial.write(message)
\r
102 self.serial.flush()
\r
103 except SerialTimeoutException:
\r
104 raise ispBase.IspError('Serial send timeout')
\r
105 self.seq = (self.seq + 1) & 0xFF
\r
106 return self.recvMessage()
\r
108 def recvMessage(self):
\r
112 s = self.serial.read()
\r
114 raise ispBase.IspError("Timeout")
\r
115 b = struct.unpack(">B", s)[0]
\r
118 if state == 'Start':
\r
122 elif state == 'GetSeq':
\r
124 elif state == 'MsgSize1':
\r
127 elif state == 'MsgSize2':
\r
130 elif state == 'Token':
\r
136 elif state == 'Data':
\r
138 if len(data) == msgSize:
\r
140 elif state == 'Checksum':
\r
148 programmer = Stk500v2()
\r
149 programmer.connect(port = sys.argv[1])
\r
150 programmer.programChip(intelHex.readHex(sys.argv[2]))
\r
153 if __name__ == '__main__':
\r