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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
- STAT_BUSY = 0x01
- 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)
-
- 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):
-
- 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):
-
- 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,
- )
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