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"""
# TOP2049 Open Source programming suite
#
# Atmel AT89C2051 DIP20 Support
#
# Copyright (c) 2010 Guido
# 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_AT89S52dip40(Chip):
STAT_BUSY = 0x01 # Programmer is running a command
STAT_ERR = 0x02 # Error during write
def __init__(self):
Chip.__init__(self,
chipPackage = "DIP40",
chipPinVCC = 40,
chipPinsVPP = 31,
chipPinGND = 20)
self.flashPageSize = 0x4000
self.flashPages = 1
def __initChip(self):
self.applyVCC(False)
self.applyVPP(False)
self.applyGND(True)
self.top.cmdSetVCCVoltage(5)
self.top.cmdSetVPPVoltage(5)
def readSignature(self):
self.__initChip()
self.top.cmdEnableZifPullups(True)
self.applyGND(True)
self.applyVCC(True)
self.top.cmdSetVPPVoltage(5)
self.__loadCommand(5) # VPP on
self.applyVPP(True)
self.__loadCommand(1) # set nPROG
self.__loadAddress(0x0100)
self.__setPx()
data = b""
self.top.cmdFPGARead(0x10)
self.__loadAddress(0x0200)
self.top.cmdFPGARead(0x10)
data += self.top.cmdReadBufferReg()
self.applyVPP(False)
self.__loadCommand(6) # VPP off
signature = b""
signature += int2byte(data[0])
signature += int2byte(data[1])
self.top.printInfo("Signature: %X, %X" % (byte2int(signature[0]), byte2int(signature[1])))
return signature
def erase(self):
self.__initChip()
self.applyGND(True)
self.applyVCC(True)
self.__loadCommand(1) # set P3.2
self.top.cmdSetVPPVoltage(5)
self.__loadCommand(5) # VPP on
self.applyVPP(True)
self.top.cmdDelay(0.5)
self.__setPx(P26=1, P33=1)
self.top.cmdSetVPPVoltage(12)
self.__runCommandSync(3)
self.top.cmdDelay(0.5)
self.applyVPP(False)
self.top.cmdSetVPPVoltage(5)
self.__setPx()
self.__loadCommand(6) # VPP off
self.top.flushCommands()
self.top.printInfo("{chipid}: Erasing flash, verifying ...".format(chipid=self.chipDescription.chipID))
ok = self.__verifyErase()
if ok == 0:
self.top.printInfo("{chipid}: Erase done.".format(chipid=self.chipDescription.chipID))
else:
self.top.printInfo("{chipid}: Erase failed!".format(chipid=self.chipDescription.chipID))
def readProgmem(self):
self.__initChip()
self.top.cmdEnableZifPullups(True)
self.applyGND(True)
self.applyVCC(True)
self.top.cmdSetVPPVoltage(5)
self.__loadCommand(5) # VPP on
self.applyVPP(True)
self.__loadCommand(1) # set nPROG
self.__setPx(P36=1, P37=1)
#self.__setPx(P26=1, P27=1, P36=1)
#self.__setPx()
image = b""
byteCount = 0
self.progressMeterInit("Reading Flash", self.flashPageSize*self.flashPages)
for addr in range(0, self.flashPageSize*self.flashPages):
self.progressMeter(addr)
self.__loadAddress(addr)
#self.__runCommandSync(4)
self.top.cmdFPGARead(0x10)
byteCount += 1
if byteCount == self.top.getBufferRegSize():
image += self.top.cmdReadBufferReg(byteCount)
byteCount = 0
image += self.top.cmdReadBufferReg(byteCount)
self.applyVPP(False)
self.__setPx()
self.__loadCommand(6) # VPP off
self.top.flushCommands()
self.progressMeterFinish()
return image
def writeProgmem(self, image):
if len(image) > self.flashPageSize*self.flashPages:
self.throwError("Invalid FLASH image size %d (expected <=%d)" %\
(len(image), self.flashPageSize*self.flashPages))
self.__initChip()
self.top.cmdEnableZifPullups(True)
self.applyGND(True)
self.applyVCC(True)
self.__loadCommand(1) # set P3.2
self.top.cmdSetVPPVoltage(5)
self.__loadCommand(5) # VPP on
self.applyVPP(True)
self.__setPx(P27=1, P33=1, P36=1, P37=1)
self.top.cmdSetVPPVoltage(12)
self.progressMeterInit("Writing Flash", len(image))
for addr in range(0, len(image)):
self.progressMeter(addr)
data = byte2int(image[addr])
if data != 0xFF:
self.__loadData(data)
self.__loadAddress(addr)
self.__loadCommand(3)
ok = self.__progWait()
if (ok & self.STAT_ERR) != 0:
self.throwError("Write byte failed.")
self.top.flushCommands()
self.applyVPP(False)
self.top.cmdSetVPPVoltage(5)
self.__setPx()
self.__loadCommand(6) # VPP off
self.progressMeterFinish()
ok = self.__verifyProgmem(image)
if ok == 0:
self.top.printInfo("{chipid}: Write flash done.".format(chipid = self.chipDescription.chipID))
else:
self.top.printInfo("{chipid}: Write flash failed!".format(chipid = self.chipDescription.chipID))
def readLockbits(self):
self.__initChip()
self.top.cmdEnableZifPullups(True)
self.applyGND(True)
self.applyVCC(True)
self.top.cmdSetVPPVoltage(5)
self.__loadCommand(5) # VPP on
self.applyVPP(True)
self.__loadCommand(1) # set nPROG
self.__setPx(P26=1, P27=1, P36=1)
data = b""
self.top.cmdFPGARead(0x10)
data += self.top.cmdReadBufferReg()
self.applyVPP(False)
self.__loadCommand(6) # VPP off
lockbits = b""
lockbits += int2byte(data[0])
return lockbits
def writeLockbits(self, image):
if len(image) != 1:
self.throwError("Invalid lock-bits image size %d (expected %d)" %\
(len(image), 1))
self.progressMeterInit("Writing lock bits", 3)
lbMask = 0x04
lb=byte2int(image[0])
if(lb & lbMask ):
self.progressMeter(1)
self.__writeLockbit(1)
lbMask <<= 1
if(lb & lbMask ):
self.progressMeter(2)
self.__writeLockbit(2)
lbMask <<= 1
if(lb & lbMask ):
self.progressMeter(3)
self.__writeLockbit(3)
self.progressMeterFinish()
def __writeLockbit(self, lb):
self.__initChip()
self.applyGND(True)
self.applyVCC(True)
self.__loadCommand(1)
self.top.cmdSetVPPVoltage(5)
self.__loadCommand(5) # VPP on
self.applyVPP(True)
self.top.cmdSetVPPVoltage(12)
if(lb == 1 ):
self.__setPx(P26=1, P27=1, P33=1, P36=1, P37=1)
self.__runCommandSync(3)
elif(lb == 2 ):
self.__setPx(P26=1, P27=1, P33=1, P36=0, P37=0)
self.__runCommandSync(3)
elif(lb == 3 ):
self.__setPx(P26=1, P27=0, P33=1, P36=1, P37=0)
self.__runCommandSync(3)
self.top.flushCommands()
self.applyVPP(False)
self.top.cmdSetVPPVoltage(5)
self.__setPx()
self.__loadCommand(6) # VPP off
def __verifyErase(self):
ok = 0
image = self.readProgmem()
for addr in range(0, self.flashPageSize*self.flashPages):
if byte2int(image[addr]) != 0xFF:
ok = 1
return ok
def __verifyProgmem(self,image):
data = self.readProgmem()
ok = 0
for addr in range(0, len(image)-1):
if byte2int(image[addr]) != byte2int(data[addr]):
ok = 1
return ok
def __loadData(self, data):
self.top.cmdFPGAWrite(0x10, data)
def __loadAddress(self, addr):
self.top.cmdFPGAWrite(0x11, addr & 0x00FF)
self.top.cmdFPGAWrite(0x12, (addr >> 8) & 0x3FFF)
def __loadCommand(self, command):
self.top.cmdFPGAWrite(0x13, command & 0xFF)
def __runCommandSync(self, command):
self.__loadCommand(command)
self.__busyWait()
def __setPx(self, P26=0, P27=0, P33=0, P36=0, P37=0, nPSEN=0, RST=1):
data = 0
if P26:
data |= 1
if P27:
data |= 2
if P33:
data |= 4
if P36:
data |= 8
if P37:
data |= 16
if nPSEN:
data |= 32
if RST:
data |= 64
self.top.cmdFPGAWrite(0x16, data)
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, 26):
if not self.__busy():
return
self.top.hostDelay(0.001)
self.throwError("Timeout in busywait.")
def __progWait(self):
for i in range(0,4):
self.top.cmdFPGARead(0x12)
stat = self.top.cmdReadBufferReg()
if (byte2int(stat[0]) & self.STAT_BUSY) == 0:
return byte2int(stat[0])
self.top.hostDelay(0.001)
self.throwError("Timeout in busywait.")
lockbitDesc = (
BitDescription(0, "Unused"),
BitDescription(1, "Unused"),
BitDescription(2, "BLB01 - further programming of flash mem. is disabled"),
BitDescription(3, "BLB02 - verify disabled"),
BitDescription(4, "BLB03 - external execution disabled"),
BitDescription(5, "Unused"),
BitDescription(6, "Unused"),
BitDescription(7, "Unused"),
BitDescription(8, "Unused"),
)
ChipDescription(
Chip_AT89S52dip40,
bitfile = "at89s5xdip40",
chipID = "at89s52dip40",
runtimeID = (0x0005, 0x01),
chipVendors = "Atmel",
description = "AT89S52",
lockbitDesc = lockbitDesc,
maintainer = None,
packages = ( ("DIP40", ""), )
)
|
