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"""
# TOP2049 Open Source programming suite
#
# Winbond W29EE011 DIP32
# Winbond W29EE011 PLCC32 (inside 1:1 PLCC32->DIP32 adapter)
#
# Copyright (c) 2010 Michael Buesch <m@bues.ch>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
from libtoprammer.chip import *
class Chip_w29ee011dip32(Chip):
PROGCMD_WRITEBUF = 1 # Write buffer to chip
STAT_BUSY = 0x01 # Programmer is running a command
def __init__(self):
Chip.__init__(self,
chipPackage = "DIP32",
chipPinVCC = 32,
chipPinsVPP = None,
chipPinGND = 16)
def erase(self):
self.applyVCC(True)
self.applyVPP(True)
self.applyGND(True)
commands = (
(0x5555, 0xAA),
(0x2AAA, 0x55),
(0x5555, 0x80),
(0x5555, 0xAA),
(0x2AAA, 0x55),
(0x5555, 0x10),
)
self.progressMeterInit("Erasing chip", 0)
self.__setCEOE(CE=0, OE=1)
self.__resetBufferPointers()
self.__swDataProtect(False)
self.__runCommandSync(self.PROGCMD_WRITEBUF)
self.top.hostDelay(0.05)
self.__resetBufferPointers()
for command in commands:
self.__appendJEDEC(command[0], command[1])
self.__runCommandSync(self.PROGCMD_WRITEBUF)
self.top.hostDelay(0.05)
self.__setCEOE(CE=1, OE=1)
self.progressMeterFinish()
def readEEPROM(self):
self.applyVCC(True)
self.applyVPP(True)
self.applyGND(True)
self.progressMeterInit("Reading EEPROM", 0x20000)
self.__setCEOE(CE=0, OE=0)
image = self.__readRange(0, 0x20000, progress=True)
self.__setCEOE(CE=1, OE=1)
self.progressMeterFinish()
return image
def __readRange(self, baseAddress, size, progress=False):
image = b""
byteCount = 0
prevAddr = baseAddress
self.__loadReadAddrLo(baseAddress)
self.__loadReadAddrMed(baseAddress >> 8)
self.__loadReadAddrHi(baseAddress >> 16)
for offset in range(0, size):
addr = baseAddress + offset
if progress:
self.progressMeter(addr)
if (addr & 0xFF) != (prevAddr & 0xFF):
self.__loadReadAddrLo(addr)
if (addr & 0xFF00) != (prevAddr & 0xFF00):
self.__loadReadAddrMed(addr >> 8)
if (addr & 0xFF0000) != (prevAddr & 0xFF0000):
self.__loadReadAddrHi(addr >> 16)
prevAddr = addr
self.top.cmdFPGARead(0x10)
byteCount += 1
if byteCount == self.top.getBufferRegSize():
image += self.top.cmdReadBufferReg(byteCount)
byteCount = 0
image += self.top.cmdReadBufferReg(byteCount)
return image
def writeEEPROM(self, image):
if len(image) > 0x20000:
self.throwError("Invalid EPROM image size %d (expected <=%d)" %\
(len(image), 0x20000))
self.applyVCC(True)
self.applyVPP(True)
self.applyGND(True)
self.progressMeterInit("Writing EEPROM", len(image))
self.__setCEOE(CE=0, OE=1)
for addr in range(0, len(image), 128):
self.progressMeter(addr)
pagelen = min(128, len(image) - addr)
page = image[addr:addr+pagelen]
self.__writePage(addr, page)
self.__setCEOE(CE=1, OE=1)
self.progressMeterFinish()
def __swDataProtect(self, enable):
if enable:
jedecCommands = (
(0x5555, 0xAA),
(0x2AAA, 0x55),
(0x5555, 0xA0),
)
else:
jedecCommands = (
(0x5555, 0xAA),
(0x2AAA, 0x55),
(0x5555, 0x80),
(0x5555, 0xAA),
(0x2AAA, 0x55),
(0x5555, 0x20),
)
for command in jedecCommands:
self.__appendJEDEC(command[0], command[1])
def __writePage(self, pageAddress, pageData):
for t in range(0, 15):
self.__resetBufferPointers()
self.__swDataProtect(True)
assert(len(pageData) <= 128)
for byte in pageData:
self.__writeBufAppend(byte2int(byte))
self.__loadWriteAddr(pageAddress)
self.__runCommandSync(self.PROGCMD_WRITEBUF)
self.top.hostDelay(0.01)
# Verify
self.__setCEOE(CE=0, OE=0)
verifyImage = self.__readRange(pageAddress, len(pageData))
self.__setCEOE(CE=0, OE=1)
if verifyImage == pageData:
break
self.top.hostDelay(0.1)
else:
self.throwError("Verify error on page write at address 0x%05X" % pageAddress)
def __writeBufAppend(self, byte):
# This also auto-increments the write buffer pointer
self.top.cmdFPGAWrite(0x10, byte & 0xFF)
def __resetBufferPointers(self):
self.top.cmdFPGAWrite(0x13, 0)
def __loadCommand(self, command):
self.top.cmdFPGAWrite(0x12, command & 0xFF)
def __runCommandSync(self, command):
self.__loadCommand(command)
self.__busyWait()
def __loadWriteAddr(self, addr):
self.__loadWriteAddrLo(addr)
self.__loadWriteAddrMed(addr >> 8)
self.__loadWriteAddrHi(addr >> 16)
def __loadWriteAddrLo(self, addrLo):
self.top.cmdFPGAWrite(0x14, addrLo & 0xFF)
def __loadWriteAddrMed(self, addrMed):
self.top.cmdFPGAWrite(0x15, addrMed & 0xFF)
def __loadWriteAddrHi(self, addrHi):
self.top.cmdFPGAWrite(0x16, addrHi & 0xFF)
def __loadReadAddrLo(self, addrLo):
self.top.cmdFPGAWrite(0x17, addrLo & 0xFF)
def __loadReadAddrMed(self, addrMed):
self.top.cmdFPGAWrite(0x18, addrMed & 0xFF)
def __loadReadAddrHi(self, addrHi):
self.top.cmdFPGAWrite(0x19, addrHi & 0xFF)
def __setCEOE(self, CE, OE):
data = 0
if CE:
data |= 0x01
if OE:
data |= 0x02
self.top.cmdFPGAWrite(0x1A, data)
def __appendJEDEC(self, addr, data):
self.__loadJEDECAddrLo(addr)
self.__loadJEDECAddrMed(addr >> 8)
self.__loadJEDECAddrHi(addr >> 16)
self.__loadJEDECData(data)
def __loadJEDECAddrLo(self, addrLo):
self.top.cmdFPGAWrite(0x1B, addrLo & 0xFF)
def __loadJEDECAddrMed(self, addrMed):
self.top.cmdFPGAWrite(0x1C, addrMed & 0xFF)
def __loadJEDECAddrHi(self, addrHi):
self.top.cmdFPGAWrite(0x1D, addrHi & 0xFF)
def __loadJEDECData(self, data):
# This also auto-increments the JEDEC buffer pointer
self.top.cmdFPGAWrite(0x1E, data & 0xFF)
def __getStatusFlags(self):
self.top.cmdFPGARead(0x12)
stat = self.top.cmdReadBufferReg()
return byte2int(stat[0])
def __busy(self):
return bool(self.__getStatusFlags() & self.STAT_BUSY)
def __busyWait(self):
for i in range(0, 100):
if not self.__busy():
return
self.top.hostDelay(0.01)
self.throwError("Timeout in busywait.")
ChipDescription(
Chip_w29ee011dip32,
bitfile = "w29ee011dip32",
runtimeID = (0x0009, 0x01),
chipType = ChipDescription.TYPE_EEPROM,
chipVendors = "Winbond",
description = "W29EE011 EEPROM",
packages = ( ("DIP32", ""), ("PLCC32", "Use 1:1 PLCC32->DIP32 adapter"), ),
broken = True,
)
|
