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"""
# TOP2049 Open Source programming suite
#
# Atmel Tiny small pin count
#
# 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_AtTinySPC_common(Chip):
PROGCMD_SENDINSTR = 1 # Send an instruction to the chip
STAT_BUSY = 0x01 # Programmer is running a command
STAT_SDO = 0x02 # Raw SDO pin state
def __init__(self,
chipPackage,
chipPinVCC,
chipPinsVPP,
chipPinGND,
signature,
flashPageSize,
flashPages,
eepromPageSize,
eepromPages,
nrFuseBits,
nrLockBits):
Chip.__init__(self,
chipPackage=chipPackage,
chipPinVCC=chipPinVCC,
chipPinsVPP=chipPinsVPP,
chipPinGND=chipPinGND)
self.signature = signature
self.flashPageSize = flashPageSize
self.flashPages = flashPages
self.eepromPageSize = eepromPageSize
self.eepromPages = eepromPages
self.nrFuseBits = nrFuseBits
self.nrLockBits = nrLockBits
def readSignature(self):
self.__enterPM()
self.progressMeterInit("Reading signature", 0)
signature = self.__readSignature()
self.progressMeterFinish()
return signature
def erase(self):
self.__enterPM()
self.progressMeterInit("Erasing chip", 0)
self.__sendInstr(SDI=0x80, SII=0x4C)
self.__sendInstr(SDI=0x00, SII=0x64)
self.__sendInstr(SDI=0x00, SII=0x6C)
self.__waitHighSDO()
self.__sendNOP()
self.progressMeterFinish()
def readProgmem(self):
nrWords = self.flashPages * self.flashPageSize
image = b""
self.__enterPM()
self.progressMeterInit("Reading flash", nrWords)
self.__sendReadFlashInstr()
currentHigh = -1
bufferedBytes = 0
for word in range(0, nrWords):
self.progressMeter(word)
low = word & 0xFF
high = (word >> 8) & 0xFF
self.__sendInstr(SDI=low, SII=0x0C)
if high != currentHigh:
self.__sendInstr(SDI=high, SII=0x1C)
currentHigh = high
self.__sendInstr(SDI=0x00, SII=0x68)
self.__sendInstr(SDI=0x00, SII=0x6C)
self.__readSDOBufferHigh()
bufferedBytes += 1
self.__sendInstr(SDI=0x00, SII=0x78)
self.__sendInstr(SDI=0x00, SII=0x7C)
self.__readSDOBufferHigh()
bufferedBytes += 1
if bufferedBytes == self.top.getBufferRegSize():
image += self.top.cmdReadBufferReg(bufferedBytes)
bufferedBytes = 0
image += self.top.cmdReadBufferReg(bufferedBytes)
self.progressMeterFinish()
return image
def writeProgmem(self, image):
nrWords = self.flashPages * self.flashPageSize
if len(image) > nrWords * 2 or len(image) % 2 != 0:
self.throwError("Invalid flash image size %d (expected <=%d and word aligned)" %\
(len(image), nrWords * 2))
self.__enterPM()
self.progressMeterInit("Writing flash", len(image) // 2)
self.__sendWriteFlashInstr()
currentHigh = -1
for word in range(0, len(image) // 2):
self.progressMeter(word)
low = word & 0xFF
high = (word >> 8) & 0xFF
self.__sendInstr(SDI=low, SII=0x0C)
self.__sendInstr(SDI=byte2int(image[word * 2 + 0]), SII=0x2C)
self.__sendInstr(SDI=byte2int(image[word * 2 + 1]), SII=0x3C)
self.__sendInstr(SDI=0x00, SII=0x7D)
self.__sendInstr(SDI=0x00, SII=0x7C)
if ((word + 1) % self.flashPageSize == 0) or word == len(image) // 2 - 1:
if currentHigh != high:
self.__sendInstr(SDI=high, SII=0x1C)
currentHigh = high
self.__sendInstr(SDI=0x00, SII=0x64)
self.__sendInstr(SDI=0x00, SII=0x6C)
self.__waitHighSDO()
self.__sendNOP()
self.progressMeterFinish()
def readEEPROM(self):
nrBytes = self.eepromPages * self.eepromPageSize
image = b""
self.__enterPM()
self.progressMeterInit("Reading EEPROM", nrBytes)
self.__sendReadEEPROMInstr()
currentPage = -1
bufferedBytes = 0
for i in range(0, nrBytes):
self.progressMeter(i)
low = i & 0xFF
high = (i >> 8) & 0xFF
self.__sendInstr(SDI=low, SII=0x0C)
if currentPage != high:
self.__sendInstr(SDI=high, SII=0x1C)
currentPage = high
self.__sendInstr(SDI=0x00, SII=0x68)
self.__sendInstr(SDI=0x00, SII=0x6C)
self.__readSDOBufferHigh()
bufferedBytes += 1
if bufferedBytes == self.top.getBufferRegSize():
image += self.top.cmdReadBufferReg(bufferedBytes)
bufferedBytes = 0
image += self.top.cmdReadBufferReg(bufferedBytes)
self.progressMeterFinish()
return image
def writeEEPROM(self, image):
nrBytes = self.eepromPages * self.eepromPageSize
if len(image) > nrBytes:
self.throwError("Invalid EEPROM image size %d (expected <=%d)" %\
(len(image), nrBytes))
self.__enterPM()
self.progressMeterInit("Writing EEPROM", len(image))
self.__sendWriteEEPROMInstr()
for i in range(0, len(image)):
self.progressMeter(i)
low = i & 0xFF
high = (i >> 8) & 0xFF
self.__sendInstr(SDI=low, SII=0x0C)
self.__sendInstr(SDI=high, SII=0x1C)
self.__sendInstr(SDI=byte2int(image[i]), SII=0x2C)
self.__sendInstr(SDI=0x00, SII=0x6D)
self.__sendInstr(SDI=0x00, SII=0x64)
self.__sendInstr(SDI=0x00, SII=0x6C)
self.__waitHighSDO()
self.__sendNOP()
self.progressMeterFinish()
def readFuse(self):
usedBitsMask = (1 << self.nrFuseBits) - 1
unusedBitsMask = usedBitsMask ^ 0xFFFFFF
fuses = []
self.__enterPM()
self.progressMeterInit("Reading fuses", 0)
self.__sendInstr(SDI=0x04, SII=0x4C)
self.__sendInstr(SDI=0x00, SII=0x68)
self.__sendInstr(SDI=0x00, SII=0x6C)
self.__readSDOBufferHigh()
fuses.append(int2byte(self.top.cmdReadBufferReg8() |
((unusedBitsMask >> 0) & 0xFF)))
if self.nrFuseBits > 8:
self.__sendInstr(SDI=0x04, SII=0x4C)
self.__sendInstr(SDI=0x00, SII=0x7A)
self.__sendInstr(SDI=0x00, SII=0x7E)
self.__readSDOBufferHigh()
fuses.append(int2byte(self.top.cmdReadBufferReg8() |
((unusedBitsMask >> 8) & 0xFF)))
if self.nrFuseBits > 16:
self.__sendInstr(SDI=0x04, SII=0x4C)
self.__sendInstr(SDI=0x00, SII=0x6A)
self.__sendInstr(SDI=0x00, SII=0x6E)
self.__readSDOBufferHigh()
fuses.append(int2byte(self.top.cmdReadBufferReg8() |
((unusedBitsMask >> 16) & 0xFF)))
self.progressMeterFinish()
return b"".join(fuses)
def writeFuse(self, image):
if len(image) != roundup(self.nrFuseBits, 8) // 8:
self.throwError("Invalid Fuses image size %d (expected %d)" %\
(len(image), roundup(self.nrFuseBits, 8) // 8))
usedBitsMask = (1 << self.nrFuseBits) - 1
self.__enterPM()
self.progressMeterInit("Writing fuses", 0)
self.__sendInstr(SDI=0x40, SII=0x4C)
self.__sendInstr(SDI=(image[0] & (usedBitsMask >> 0)), SII=0x2C)
self.__sendInstr(SDI=0x00, SII=0x64)
self.__sendInstr(SDI=0x00, SII=0x6C)
self.__waitHighSDO()
if self.nrFuseBits > 8:
self.__sendInstr(SDI=0x40, SII=0x4C)
self.__sendInstr(SDI=(image[1] & (usedBitsMask >> 8)), SII=0x2C)
self.__sendInstr(SDI=0x00, SII=0x74)
self.__sendInstr(SDI=0x00, SII=0x7C)
self.__waitHighSDO()
if self.nrFuseBits > 16:
self.__sendInstr(SDI=0x40, SII=0x4C)
self.__sendInstr(SDI=(image[2] & (usedBitsMask >> 16)), SII=0x2C)
self.__sendInstr(SDI=0x00, SII=0x66)
self.__sendInstr(SDI=0x00, SII=0x6E)
self.__waitHighSDO()
self.progressMeterFinish()
def readLockbits(self):
usedBitsMask = (1 << self.nrLockBits) - 1
unusedBitsMask = usedBitsMask ^ 0xFF
self.__enterPM()
self.progressMeterInit("Reading lockbits", 0)
self.__sendInstr(SDI=0x04, SII=0x4C)
self.__sendInstr(SDI=0x00, SII=0x78)
self.__sendInstr(SDI=0x00, SII=0x7C)
self.__readSDOBufferHigh()
lockbits = int2byte(self.top.cmdReadBufferReg8() | unusedBitsMask)
self.progressMeterFinish()
return lockbits
def writeLockbits(self, image):
if len(image) != roundup(self.nrLockBits, 8) // 8:
self.throwError("Invalid Lockbits image size %d (expected %d)" %\
(len(image), roundup(self.nrLockBits, 8) // 8))
usedBitsMask = (1 << self.nrLockBits) - 1
self.__enterPM()
self.progressMeterInit("Writing lockbits", 0)
self.__sendInstr(SDI=0x20, SII=0x4C)
self.__sendInstr(SDI=(byte2int(image[0]) & usedBitsMask), SII=0x2C)
self.__sendInstr(SDI=0x00, SII=0x64)
self.__sendInstr(SDI=0x00, SII=0x6C)
self.__waitHighSDO()
self.progressMeterFinish()
def __readSignature(self):
self.__sendInstr(SDI=0x08, SII=0x4C)
for i in range(0, 3):
self.__sendInstr(SDI=i, SII=0x0C)
self.__sendInstr(SDI=0x00, SII=0x68)
self.__sendInstr(SDI=0x00, SII=0x6C)
self.__readSDOBufferHigh()
return self.top.cmdReadBufferReg()[0:3]
def __enterPM(self):
"Enter HV programming mode."
self.applyVCC(False)
self.applyVPP(False)
self.applyGND(False)
self.top.cmdSetVCCVoltage(5)
self.top.cmdSetVPPVoltage(0)
self.top.cmdSetVPPVoltage(12)
self.applyGND(True)
self.applyVCC(True)
self.__setPins(SCI=0, SDO_en=0, RST_en=1, RST=0)
for i in range(0, 6):
self.__setPins(SCI=0, SDO_en=0, RST_en=1, RST=0)
self.__setPins(SCI=1, SDO_en=0, RST_en=1, RST=0)
self.__setPins(SCI=0, SDO_en=1, SDO=0, RST_en=1, RST=0)
self.top.hostDelay(0.001)
self.__setPins(SDO_en=1, SDO=0, RST_en=0)
self.applyVPP(True)
self.top.hostDelay(0.001)
self.__setPins(SDO_en=0)
self.top.hostDelay(0.01)
signature = self.__readSignature()
if signature != self.signature:
msg = "Unexpected device signature. " +\
"Want %02X%02X%02X, but got %02X%02X%02X" % \
(byte2int(self.signature[0]), byte2int(self.signature[1]),
byte2int(self.signature[2]),
byte2int(signature[0]), byte2int(signature[1]),
byte2int(signature[2]))
if self.top.getForceLevel() >= 1:
self.printWarning(msg)
else:
self.throwError(msg)
def __sendReadEEPROMInstr(self):
self.__sendInstr(SDI=0x03, SII=0x4C)
def __sendWriteEEPROMInstr(self):
self.__sendInstr(SDI=0x11, SII=0x4C)
def __sendReadFlashInstr(self):
self.__sendInstr(SDI=0x02, SII=0x4C)
def __sendWriteFlashInstr(self):
self.__sendInstr(SDI=0x10, SII=0x4C)
def __sendNOP(self):
self.__sendInstr(SDI=0x00, SII=0x4C)
def __sendInstr(self, SDI, SII):
self.__setSDI(SDI)
self.__setSII(SII)
self.__loadCommand(self.PROGCMD_SENDINSTR)
# We do not poll the busy flag, because that would result
# in a significant slowdown. We delay long enough for the
# command to finish execution, instead.
self.top.hostDelay(0.001)
def __setSDI(self, sdi):
self.top.cmdFPGAWrite(0x13, sdi & 0xFF)
def __setSII(self, sii):
self.top.cmdFPGAWrite(0x14, sii & 0xFF)
def __loadCommand(self, command):
self.top.cmdFPGAWrite(0x12, command & 0xFF)
def __runCommandSync(self, command):
self.__loadCommand(command)
self.__busyWait()
def __setPins(self, SCI=0, SDO_en=0, SDO=0, RST_en=0, RST=0):
data = 0
if SCI:
data |= 1
if SDO_en:
data |= 2
if SDO:
data |= 4
if RST_en:
data |= 8
if RST:
data |= 16
self.top.cmdFPGAWrite(0x15, data)
def __getStatusFlags(self):
self.top.cmdFPGARead(0x12)
stat = self.top.cmdReadBufferReg()
return byte2int(stat[0])
def __readSDOBufferHigh(self):
self.top.cmdFPGARead(0x10)
def __rawSDOState(self):
return bool(self.__getStatusFlags() & self.STAT_SDO)
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.")
def __waitHighSDO(self):
for i in range(0, 100):
if self.__rawSDOState():
return
self.top.hostDelay(0.01)
self.throwError("Timeout waiting for SDO.")
|
