CVS: python/msp430 HIL.py,NONE,1.1 hilspi.py,NONE,1.1 jtag.py,1.4,1.5

Update of /cvsroot/mspgcc/python/msp430
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv12015/python/msp430

Modified Files:
	jtag.py 
Added Files:
	HIL.py hilspi.py 
Log Message:
- HIL python bindings
- add a library (hilspi) to do SPI over the JTAG lines
- add homepage in comments

--- NEW FILE: HIL.py ---
# Python bindings to the functions in the MSP430 JTAG HIL
# (Hardware Interface Library)
# 
# (C) 2004 Chris Liechti <[email protected]>
# this is distributed under a free software license, see license.txt
# 
# http://mspgcc.sf.net
# 
# Requires Python 2+, ctypes and HIL.dll/libHIL.so
# 
# $Id: HIL.py,v 1.1 2004/07/14 01:59:29 cliechti Exp $

import ctypes

HIL = ctypes.windll.HIL

Initialize          = HIL.HIL_Initialize
Initialize.argtypes = [ctypes.c_char_p]
Initialize.restype  = ctypes.c_int
Open                = HIL.HIL_Open
Open.argtypes       = []
Open.restype        = ctypes.c_int
Connect             = HIL.HIL_Connect
Connect.argtypes    = []
Connect.restype     = ctypes.c_int
Release             = HIL.HIL_Release
Release.argtypes    = []
Release.restype     = ctypes.c_int
Close               = HIL.HIL_Close
Close.argtypes      = [ctypes.c_long]
Close.restype       = ctypes.c_int
JTAG_IR             = HIL.HIL_JTAG_IR
JTAG_IR.argtypes    = [ctypes.c_long]
JTAG_IR.restype     = ctypes.c_long
TEST_VPP            = HIL.HIL_TEST_VPP
TEST_VPP.argtypes   = [ctypes.c_long]
TEST_VPP.restype    = ctypes.c_long
JTAG_DR             = HIL.HIL_JTAG_DR
JTAG_DR.argtypes    = [ctypes.c_long, ctypes.c_long]
JTAG_DR.restype     = ctypes.c_long
VCC                 = HIL.HIL_VCC
VCC.argtypes        = [ctypes.c_long]
VCC.restype         = ctypes.c_int
TST                 = HIL.HIL_TST
TST.argtypes        = [ctypes.c_long]
TST.restype         = ctypes.c_int
TCK                 = HIL.HIL_TCK
TCK.argtypes        = [ctypes.c_long]
TCK.restype         = ctypes.c_int
TMS                 = HIL.HIL_TMS
TMS.argtypes        = [ctypes.c_long]
TMS.restype         = ctypes.c_int
TDI                 = HIL.HIL_TDI
TDI.argtypes        = [ctypes.c_long]
TDI.restype         = ctypes.c_int
TCLK                = HIL.HIL_TCLK
TCLK.argtypes       = [ctypes.c_long]
TCLK.restype        = ctypes.c_int
RST                 = HIL.HIL_RST
RST.argtypes        = [ctypes.c_long]
RST.restype         = ctypes.c_int
VPP                 = HIL.HIL_VPP
VPP.argtypes        = [ctypes.c_long]
VPP.restype         = ctypes.c_int
DelayMSec           = HIL.HIL_DelayMSec
DelayMSec.argtypes  = [ctypes.c_ulong]
DelayMSec.restype   = ctypes.c_int
StartTimer          = HIL.HIL_StartTimer
StartTimer.argtypes = []
StartTimer.restype  = ctypes.c_int
ReadTimer           = HIL.HIL_ReadTimer
ReadTimer.argtypes  = []
ReadTimer.restype   = ctypes.c_ulong
StopTimer           = HIL.HIL_StopTimer
StopTimer.argtypes  = []
StopTimer.restype   = ctypes.c_int
ReadTDO             = HIL.HIL_ReadTDO
ReadTDO.argtypes    = []
ReadTDO.restype     = ctypes.c_long

if __name__ == '__main__':
    Initialize('1')
    Connect()
    VCC(3000)
    
    #~ HIL_TST(1)
    #~ HIL_DelayMSec(1000)
    #~ HIL_TST(0)
    
    #~ HIL_TCK(1)
    #~ HIL_TDI(1)
    
    #~ for i in range(3):
        #~ HIL_DelayMSec(100)
        #~ HIL_TMS(1)
        #~ HIL_DelayMSec(100)
        #~ HIL_TMS(0)

    JTAG_DR(0x1234, 16)
    
    Release()
    Close(1)

--- NEW FILE: hilspi.py ---
# Using the MSP430 JTAG parallel port board as SPI interface.
#
# (C) 2004 Chris Liechti <[email protected]>
# this is distributed under a free software license, see license.txt
# 
# http://mspgcc.sf.net
# 
# Requires Python 2+, ctypes and HIL.dll/libHIL.so
# 
# $Id: hilspi.py,v 1.1 2004/07/14 01:59:29 cliechti Exp $

import HIL
#~ import psyco
#~ psyco.full()

def init(port='1'):
    """open the parallel port and prepare for SPI mode"""
    HIL.Initialize(port)
    HIL.Connect()
    HIL.VCC(3000)
    HIL.TST(0)
    HIL.TCK(1)
    HIL.TDI(1)
    HIL.TMS(1)

def close():
    """close the parallel port"""
    HIL.Release()
    HIL.Close(1)

def _delay():
    """can be implemented if the SPI data rate has to be lowered"""
    #~ HIL.DelayMSec(1)
    #~ for i in range(10): HIL.DelayMSec(0)
    #~ HIL.DelayMSec(0)
    pass

def shift(data):
    """shift an binary string from/to the slave, returning the
       answer string of the same length
    """
    answer = []
    for character in data:
        shiftout = ord(character)
        indata = 0
        for i in range(8):
            HIL.TCK(0)
            HIL.TDI(shiftout & 0x80)
            shiftout <<= 1
            _delay()
            HIL.TCK(1)
            _delay()
            indata = (indata << 1) | HIL.ReadTDO()
        answer.append(chr(indata))
    return ''.join(answer)

def sync():
    """read untlil something else as a 0xff arrives.
    """
    while shift('\xff') != '\xff':
        pass

def getNullTeminated(maxlen=80):
    """read a null terminated string over SPI."""
    answer = []
    while maxlen:
        c = shift('\xff')
        if c == '\0': break
        answer.append(c)
        maxlen -= 1
    return ''.join(answer)


#test application
if __name__ == '__main__':
    import time
    init()
    #reset target
    HIL.RST(0)
    HIL.DelayMSec(10)
    HIL.RST(1)
    HIL.DelayMSec(10)
    
    #simple speed test
    bytes = 0
    t1 = time.time()
    for i in range(200):
        #~ print '%r' % getNullTeminated()
        bytes += len(getNullTeminated()) + 1
    dt = time.time() - t1
    print "%d bytes in %.2f seconds -> %.2f bytes/second" % (bytes, dt, bytes/dt)

Index: jtag.py
===================================================================
RCS file: /cvsroot/mspgcc/python/msp430/jtag.py,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -w -d -r1.4 -r1.5
--- jtag.py	9 Jul 2004 23:18:07 -0000	1.4
+++ jtag.py	14 Jul 2004 01:59:29 -0000	1.5
@@ -3,6 +3,8 @@
 # (C) 2002-2004 Chris Liechti <[email protected]>
 # this is distributed under a free software license, see license.txt
 #
+# http://mspgcc.sf.net
+#
 # Requires Python 2+ and the binary extension _parjtag or ctypes
 # and MSP430mspgcc.dll/libMSP430mspgcc.so and HIL.dll/libHIL.so
 #



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