import sys, time
from SerialPort_linux import *
+# serial device to communicate with
+DEVICE="/dev/ttyUSB0"
+# baudrate used for initialization
+INIT_BAUDRATE=9600
+# baudrate used for communication after init
+REAL_BAUDRATE=38400
+
# contains the last received checksum from a READ, WRITE or CHECKSUM command
last_checksum = 0
def sendByte(byte):
- time.sleep(0.01) # just to get sure, wait 10ms
+ time.sleep(0.001) # just to get sure, wait 1ms
tty.write(chr(byte))
- tty.flush()
def sendWord(word):
sendByte(word & 0xFF)
def recvChecksum():
global last_checksum
- # get checksum
last_checksum = recvByte()
last_checksum |= (recvByte() << 8)
# get checksum
recvChecksum()
+# TODO: test this function!
+def cmdCALL(address):
+ # send CALL command
+ sendByte(0x01)
+ if (recvByte() != 0xF1):
+ raise Exception
+ sendByte(0x04)
+ if (recvByte() != 0x84):
+ raise Exception
+ # tell desired address
+ sendDWord(address)
+ # wait for return parameter - not needed here!
+ #return recvByte()
+
+# TODO: test this function!
+def cmdCHECKSUM():
+ # call CHECKSUM command
+ sendByte(0x01)
+ if (recvByte() != 0xF1):
+ raise Exception
+ sendByte(0x05)
+ if (recvByte() != 0x84):
+ raise Exception
+ # get checksum
+ recvChecksum()
+
def cmdBAUDRATE(baudrate):
global last_checksum
sendByte((baudrate >> 16) & 0xFF)
sendByte((baudrate >> 24) & 0xFF)
+class FlashSequence(object):
+ def __init__(self, address, data):
+ self.address = address
+ self.data = data
+
+# list of all our address/data pairs to flash
+flashseqs = []
+
+# 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) + ":", seq.data
+
+
print "Initializing serial port..."
-tty = SerialPort("/dev/ttyUSB0", 100, 9600)
+tty = SerialPort(DEVICE, 100, INIT_BAUDRATE)
print "Please press RESET on your 1337 board..."
pass
print "OK, trying to set baudrate..."
-
# set baudrate
-cmdBAUDRATE(19200)
-tty = SerialPort("/dev/ttyUSB0", 100, 19200)
+cmdBAUDRATE(REAL_BAUDRATE)
+tty = SerialPort(DEVICE, 100, REAL_BAUDRATE)
+
+# let the fun begin!
+for seq in flashseqs:
+ if(seq.address <= 0x40000):
+ addr = seq.address
+ else:
+ continue
+ print "RAMing", len(seq.data), "bytes at address", hex(addr)
+ cmdWRITE(addr, len(seq.data), seq.data)
+ tty.flush()
+
+cmdCALL(0x30000);
+sys.exit(0)
-print
+# some tests here.......
+"""
+# 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)
+
+
+"""
# write something to the begin of the IRAM
-data = [255, 2, 3, 4]
-print "Writing", data, "to the IRAM..."
-cmdWRITE(0x00030000, 4, data)
+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..."
-data2 = cmdREAD(0x00030000, 4)
-print "Received data:", data2, "Checksum:", last_checksum
+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
+"""
+
+"""
+# 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
+"""
+
+"""
+# 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
+"""
+
+"""
+# 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
+"""
+
+"""
+# 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)
+"""
projects / pyfrprog.git / blobdiff