DEVICE="/dev/ttyUSB0"
# baudrate used for initialization
INIT_BAUDRATE=9600
-# baudrate used for communication after init
-REAL_BAUDRATE=38400
+# baudrate used for communication with the internal bootloader after init
+BOOTLOADER_BAUDRATE=38400
+# baudrate used for communication with the pkernel program that does the flashing eventually
+KERNEL_BAUDRATE=115200
# contains the last received checksum from a READ, WRITE or CHECKSUM command
last_checksum = 0
# send desired baudrate
sendDWord(baudrate)
+def pkernCHIPERASE():
+ sendByte(0x15)
+ if (recvByte() != 0x45):
+ raise Exception
+ # wait till completion...
+ 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
+
+
+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
+
class FlashSequence(object):
def __init__(self, address, data):
# check command line arguments
-if len(sys.argv) != 2:
- print "Usage: " + sys.argv[0] + " [mhx-file]"
+if len(sys.argv) != 3:
+ print "Usage: " + sys.argv[0] + " [pkernel mhx-file] [target mhx-file]"
sys.exit(1)
-# read in data from mhx-file before starting
+# read in data from mhx-files before starting
try:
- flashseqs = readMHXFile(sys.argv[1])
+ bootloaderseqs = readMHXFile(sys.argv[1])
+ pkernelseqs = readMHXFile(sys.argv[2])
except IOError as error:
print sys.argv[0] + ": Error - couldn't open file " + error.filename + "!"
sys.exit(1)
-print "The following flash sequences have been read in:"
-for seq in flashseqs:
- print hex(seq.address) + ":", seq.data
-
print "Initializing serial port..."
tty = SerialPort(DEVICE, 100, INIT_BAUDRATE)
-print "Please press RESET on your 1337 board..."
+print "Please press RESET on your board..."
-while 1:
+while True:
tty.write('V')
tty.flush()
try:
print "OK, trying to set baudrate..."
# set baudrate
-cmdBAUDRATE(REAL_BAUDRATE)
-tty = SerialPort(DEVICE, 100, REAL_BAUDRATE)
+cmdBAUDRATE(BOOTLOADER_BAUDRATE)
+tty = SerialPort(DEVICE, 100, BOOTLOADER_BAUDRATE)
+print "Transfering pkernel program to IRAM",
# let the fun begin!
-for seq in flashseqs:
+for seq in bootloaderseqs:
if(seq.address <= 0x40000):
addr = seq.address
else:
continue
- print "RAMing", len(seq.data), "bytes at address", hex(addr)
+ #print "RAMing", len(seq.data), "bytes at address", hex(addr)
cmdWRITE(addr, len(seq.data), seq.data)
tty.flush()
+ sys.stdout.write(".")
+ sys.stdout.flush()
+print
-cmdCALL(0x30000);
-sys.exit(0)
+# execute our pkernel finally and set pkernel conform baudrate
+cmdCALL(0x30000)
+time.sleep(0.5) # just to get sure that the pkernel is really running!
+del tty
+tty = SerialPort(DEVICE, None, KERNEL_BAUDRATE)
+
+print "Performing ChipErase..."
+pkernCHIPERASE()
+print "Chip erasing done."
+
+print "Flashing",
+for seq in pkernelseqs:
+ # 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)
+ tty.flush()
+ sys.stdout.write(".")
+ sys.stdout.flush()
+print
+print "Flashing done."
+sendByte(0x97) # exit and restart
+print "Program was started. Have fun!"
# some tests here.......
"""
+++ /dev/null
-#!/usr/bin/env python
-import sys, time
-from SerialPort_linux import *
-
-# serial device to communicate with
-DEVICE="/dev/ttyUSB0"
-# baudrate used for communication with pkernel
-KERNEL_BAUDRATE=115200
-
-def recvByte():
- i = tty.read()
- return ord(i)
-
-def sendByte(byte):
- tty.write(chr(byte))
- tty.flush()
-
-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 = []
-
-
-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!
-"""
-for seq in flashseqs:
- print "Erasing", len(seq.data), "bytes at address", hex(seq.address)
- pkernERASE(seq.address, len(seq.data))
-"""
-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
-
-"""
-sendByte(0x99) #exit and wait
-print "Reset your board now to run code from Flash"
-"""
-
-sendByte(0x97) #exit and restart
projects / pyfrprog.git / commitdiff