# serial device to communicate with
DEVICE="/dev/ttyUSB0"
# baudrate used for communication with pkernel
-KERNEL_BAUDRATE=38400
+KERNEL_BAUDRATE=115200
-print "Initializing serial port..."
-tty = SerialPort(DEVICE, 500, INIT_BAUDRATE)
+def recvByte():
+ i = tty.read()
+ return ord(i)
-while 1:
- tty.write('V')
+def sendByte(byte):
+ tty.write(chr(byte))
tty.flush()
- try:
- if tty.read() == 'F':
- break
- except SerialPortException:
- # timeout happened, who cares ;-)
- pass
-
-print "OK, trying to set baudrate..."
-# set baudrate
-cmdBAUDRATE(REAL_BAUDRATE)
-tty = SerialPort(DEVICE, 100, REAL_BAUDRATE)
-
-"""
-print
-sendByte(0x01)
-print recvByte()
-sendByte(0x02)
-print recvByte()
-sys.exit(0)
-"""
-"""
-# execute (existing) program in ram
-cmdCALL(0x00033ffc)
-sys.exit(0)
-"""
-
-# read something from the IRAM
-#print cmdREAD(0x00030000, 32)
-
-#data = []
-#for i in range(0, 32):
-# data.append(i)
-#cmdWRITE(0x00030000, 32, data)
+def sendWord(word):
+ sendByte(word & 0xFF)
+ sendByte((word >> 8) & 0xFF)
+
+def sendDWord(dword):
+ sendByte(dword & 0xFF)
+ sendByte((dword >> 8) & 0xFF)
+ sendByte((dword >> 16) & 0xFF)
+ sendByte((dword >> 24) & 0xFF)
+
+def pkernCHIPERASE():
+ sendByte(0x15)
+ if (recvByte() != 0x45):
+ raise Exception
+ print "wait..."
+ if (recvByte() != 0x23):
+ raise Exception
+
+def pkernERASE(address, size):
+ sendByte(0x12)
+ if (recvByte() != 0x11):
+ raise Exception
+ sendDWord(address)
+ sendWord(size)
+ if (recvByte() != 0x18):
+ raise Exception
+ #print "Erasing done."
+
+
+def pkernWRITE(address, size, data):
+ # send WRITE command
+ sendByte(0x13)
+ if (recvByte() != 0x37):
+ raise Exception
+ # tell desired address and size
+ sendDWord(address)
+ sendWord(size)
+
+ # write binary stream of data
+ for i in range(0, size):
+ sendByte(data[i])
+
+ if (recvByte() != 0x28):
+ raise Exception
+ #print "Flashing done."
+
+
+class FlashSequence(object):
+ def __init__(self, address, data):
+ self.address = address
+ self.data = data
+
+# list of all our address/data pairs to flash
+flashseqs = []
-"""
-# write something to the begin of the IRAM
-data_wr = []
-checksum = 0
-for i in range(0, 0x400):
- value = i%256
- data_wr.append(value)
- checksum = (checksum + value) % (2**16)
-
-print "Calculated checksum:", checksum
-print "Writing", data_wr, "to the IRAM..."
-cmdWRITE(0x00030000, len(data_wr), data_wr)
-print "Received Checksum:", last_checksum
-print
-
-print "Reading from the IRAM again..."
-data_re = cmdREAD(0x00030000, len(data_wr))
-print "Received data:", data_re, "Checksum:", last_checksum
-"""
-
-"""
-# see whats in the iram at the moment
-data_wr = []
-print "Reading from the IRAM..."
-data_re = cmdREAD(0x00030000, 0x10000-4)
-print "Received data:", data_re, "Checksum:", last_checksum
-"""
+print "Initializing serial port..."
+tty = SerialPort(DEVICE, None, KERNEL_BAUDRATE)
+
+# check command line arguments
+if len(sys.argv) != 2:
+ print "Usage: " + sys.argv[0] + " [mhx-file]"
+ sys.exit(1)
+
+# read in data from mhx-file before starting
+try:
+ fp = open(sys.argv[1], "r")
+except IOError:
+ print sys.argv[0] + ": Error - couldn't open file " + sys.argv[1] + "!"
+ sys.exit(1)
+
+linecount = 0
+for line in fp:
+ linecount += 1
+ # get rid of newline characters
+ line = line.strip()
+
+ # we're only interested in S2 (data sequence with 3 address bytes) records by now
+ if line[0:2] == "S2":
+ byte_count = int(line[2:4], 16)
+ # just to get sure, check if byte count field is valid
+ if (len(line)-4) != (byte_count*2):
+ print sys.argv[0] + ": Warning - inavlid byte count field in " + \
+ sys.argv[1] + ":" + str(linecount) + ", skipping line!"
+ continue
+
+ # address and checksum bytes are not needed
+ byte_count -= 4
+ address = int(line[4:10], 16)
+ datastr = line[10:10+byte_count*2]
+
+ # convert data hex-byte-string to real byte data list
+ data = []
+ for i in range(0, len(datastr)/2):
+ data.append(int(datastr[2*i:2*i+2], 16))
+
+ # add flash sequence to our list
+ flashseqs.append(FlashSequence(address, data))
+
+#print "The following flash sequences have been read in:"
+#for seq in flashseqs:
+# print hex(seq.address) + ":", [hex(x) for x in seq.data]
+
+
+# let the fun begin!
"""
-# see whats in the dram at the moment
-data_wr = []
-print "Reading from the DRAM..."
-data_re = cmdREAD(0x0002C000, 0x10000-0xC000-4)
-print "Received data:", data_re, "Checksum:", last_checksum
+for seq in flashseqs:
+ print "Erasing", len(seq.data), "bytes at address", hex(seq.address)
+ pkernERASE(seq.address, len(seq.data))
"""
-
-"""
-# blank the iram
-data_wr = []
-for i in range(0, 0x10000-4):
- value = 0
- data_wr.append(value)
-
-print "Writing", data_wr, "to the IRAM..."
-cmdWRITE(0x00030000, len(data_wr), data_wr)
-print "Received Checksum:", last_checksum
+print "ChipErase..."
+pkernCHIPERASE()
+print "Chip erasing done."
+
+
+print "Flashing",
+for seq in flashseqs:
+ sys.stdout.write(".")
+ sys.stdout.flush()
+ # skip seqs only consisting of 0xffs
+ seqset = list(set(seq.data))
+ if len(seqset) == 1 and seqset[0] == 0xff:
+ continue
+ #print "Flashing", len(seq.data), "bytes at address", hex(seq.address)
+ pkernWRITE(seq.address, len(seq.data), seq.data)
print
-"""
"""
-# blank the dram
-data_wr = []
-for i in range(0, 0x10000-0xC000-4):
- value = 0
- data_wr.append(value)
-
-print "Writing", data_wr, "to the DRAM..."
-cmdWRITE(0x0002C000, len(data_wr), data_wr)
-print "Received Checksum:", last_checksum
-print
+sendByte(0x99) #exit and wait
+print "Reset your board now to run code from Flash"
"""
-
-# write some data in the iram and try to execute it
-data_wr =[
- 0x9B,0x00,
- 0x0D,0x4e,
- 0xcf,0xf1,
- 0x16,0x01,
- 0x9b,0x05,
- 0x04,0xc7,
- 0xc1,0x06,
- 0x16,0x56,
- 0xe0,0xfb, #branch
- 0x9f,0xa0,0x9f,0xa0,0x9f,0xa0, #nop
- 0x9f,0xa0,0x9f,0xa0,0x9f,0xa0,
- 0x9f,0xa0,0x9f,0xa0,0x9f,0xa0,
- 0x9f,0xa0,0x9f,0xa0,0x9f,0xa0,
- 0x9f,0xa0,0x9f,0xa0,0x9f,0xa0,
- 0x9f,0xa0,0x9f,0xa0,0x9f,0xa0,
- 0x9f,0xa0,0x9f,0xa0,0x9f,0xa0]
-print "Writing", data_wr, "to the IRAM..."
-cmdWRITE(0x00030000, len(data_wr), data_wr)
-print "Received Checksum:", last_checksum
-print
-cmdCALL(0x00030000)
+sendByte(0x97) #exit and restart
projects / pyfrprog.git / blobdiff