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"""
# TOP2049 Open Source programming suite
#
# Microchip8_18_common - basic file for 8bit PIC18 MCU
#
# Copyright (c) 2013 Pavel Stemberk <stemberk@gmail.com>
#
# 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_Microchip8_18_common(Chip):
STAT_BUSY = 0x01
STAT_SDIO = 0x02
PCMDBIT_4BITINSTR = 0
PCMDBIT_SENDDATA = 1
PCMDBIT_READDATA = 2
PCMDBIT_KEEPCLKHIGH = 7
CMD_CORE_INSTRUCTION = 0x0
CMD_SHIFT_OUT_TABLAT = 0x2
CMD_TR = 0x8
CMD_TRI = 0x9
CMD_TRD = 0xA
CMD_ITR = 0xB
CMD_TW = 0xC
CMD_TWII = 0xD
CMD_TWDD = 0xE
CMD_TW_START_PROG = 0xF
# EEPROM access: default on, if does not exist override it
hasEEPROM = True
# default delays - can be overridden
delayP2A = 400e-9 # Serial clock low time
delayP5 = 2.2e-6 # Delay between 4-bit command and command operand
delayP5A = 2.2e-6 # Delay between 4-bit command operand and next 4-bit command
delayP6 = 2.2e-6 # Delay between last SCK fall of command byte to first SCK rise of read data word
delayP9 = 1e-3 # SCK High time (minimum programming time)
delayP10 = 30e-6 # SCK Low time after programming (high-voltage discharge time)
delayP11 = 0.01 # Delay to allow self-timed data write or bulk erase to occur
delayP12 = 0.000002 # Input data hold time from nMCLR/Vpp rise
delayP13 = 0.0000001 # Vdd rise setup time to nMCLR/Vpp rise
delayP14 = 0.00000001 # Data out Valid from SCK rise
delayP15 = 0.000002 # PGM rise setup time to nMCLR/Vpp rise
userIDLocationSize = 8
userIDLocationAddr = 0x200000
deviceIDAddr = 0x3FFFFE
configWordAddr = 0x300000
deviceIDLength = 2
voltageVDD = 5
voltageVPP = 12
def __init__(self,
chipPackage, chipPinVCC, chipPinsVPP, chipPinGND,
signature,
flashPageSize, flashPages,
eepromPageSize, eepromPages,
fuseBytes
):
Chip.__init__(self,
chipPackage=chipPackage,
chipPinVCC=chipPinVCC,
chipPinsVPP=chipPinsVPP,
chipPinGND=chipPinGND)
self.signature = signature
self.flashPageSize = flashPageSize # Flash page size, in words
self.flashPages = flashPages # Nr of flash pages
self.eepromPageSize = eepromPageSize # EEPROM page size, in bytes
self.eepromPages = eepromPages # Nr of EEPROM pages
self.fuseBytes = fuseBytes # Nr of fuse bytes
self.isInPmMode = False
self.BufferedBytes = 0
self.Image = ""
def getIHexInterpreter(self):
inter = IHexInterpreter()
inter.progmemRanges = [ AddressRange(0, self.flashPageSize) ]
inter.fuseRanges = [ AddressRange(self.configWordAddr,
self.configWordAddr + self.fuseBytes) ]
inter.uilRanges = [ AddressRange(self.userIDLocationAddr,
self.userIDLocationAddr + self.userIDLocationSize) ]
return inter
def enterPM(self, force=False):
if self.isInPmMode and not force:
return
"Enter HV programming mode. Vdd first entry mode"
self.applyVCC(False)
self.applyVPP(False)
self.applyGND(False)
self.setPins(0, 0)
self.top.cmdSetVCCVoltage(self.voltageVDD)
self.top.cmdSetVPPVoltage(self.voltageVPP)
self.applyGND(True)
self.applyVCC(True)
self.top.hostDelay(10 * self.delayP13)
self.applyVPP(True)
self.top.hostDelay(102 * self.delayP12)
self.setTopProgrammerDelays()
self.isInPmMode = True
def readUserIdLocation(self):
return self.readSequentialBlock(self.userIDLocationAddr, self.userIDLocationSize, "Reading User ID Locations")
def readFuse(self):
return self.readSequentialBlock(self.configWordAddr, self.fuseBytes, "Reading Config Words")
def readSignature(self):
return self.readSequentialBlock(self.deviceIDAddr, self.deviceIDLength, "Reading Signature")
def readProgmem(self):
nrBytes = self.flashPages * self.flashPageSize
return self.readSequentialBlock(0, nrBytes, "Reading flash")
def readSequentialBlock(self, startAddr, nBytes, infoText):
self.enterPM()
self.progressMeterInit(infoText, nBytes)
self.BufferedBytes = 0
self.Image = ""
self.executeCode(self.getCodeAddrToTBLPTR(startAddr))
for byteAddr in range(0, nBytes):
self.send4bitReadInstruction(self.CMD_TRI)
self.progressMeter(byteAddr)
self.progressMeterFinish()
self.flushBufferToImage()
return self.Image
def writeSequentialBlock(self, startAddr, image, size, infoText):
if len(image) > size:
self.throwError("Invalid flash image size %d (expected <=%d)" % \
(len(image), self.userIDLocationSize))
self.enterPM()
self.executeCode((0x8EA6, 0x9CA6))
self.progressMeterInit(infoText, len(image) / 8)
for blockAddr in range(0, len(image), self.writeBufferSize):
#print("addr:{:x}".format(startAddr+blockAddr))
self.executeCode(self.getCodeAddrToTBLPTR(startAddr+blockAddr))
#for code in self.getCodeAddrToTBLPTR(startAddr+blockAddr):
# print("({:x}, ".format(code))
print(")\n")
self.writeNbytes(image[blockAddr:], self.writeBufferSize)
#self.executeCode((0x0, 0x0))
self.progressMeter(blockAddr)
self.progressMeterFinish()
def readEEPROM(self):
nrBytes = self.eepromPages * self.eepromPageSize
self.enterPM()
self.progressMeterInit("Reading EEPROM", nrBytes)
self.BufferedBytes = 0
self.Image = ""
self.executeCode((0x9EA6, 0x9CA6))
for byteAddr in range(0, nrBytes):
# print("set addr to {:x}\n".format(byteAddr))
self.setEEPROMAddr(byteAddr)
self.executeCode((0x80A6, 0x50A8, 0x6EF5))
self.send4bitReadInstruction(self.CMD_SHIFT_OUT_TABLAT)
self.progressMeter(byteAddr)
self.progressMeterFinish()
self.flushBufferToImage()
return self.Image
def writeEEPROM(self, image):
nrBytes = self.eepromPages * self.eepromPageSize
if len(image) > nrBytes:
self.throwError("Invalid flash image size {:d} (expected <={:d})".format(len(image), nrBytes))
self.enterPM()
self.progressMeterInit("Writing eeprom", len(image))
self.executeCode((0x9EA6, 0x9CA6))
for addr in range(0, len(image)):
self.progressMeter(addr)
#print("writing {:x} value to addr {:x}\n".format(byte2int(image[addr]), addr))
self.setEEPROMAddr(addr)
self.executeCode((0x0E00 | (byte2int(image[addr]) & 0xFF), 0x6EA8))
self.executeCode((0x84A6, 0x0E55, 0x6EA7, 0x0EAA, 0x6EA7))
self.executeCode((0x82A6, 0x0, 0x0))
self.top.hostDelay(self.delayP11 + self.delayP10)
self.executeCode((0x94A6,))
self.progressMeterFinish()
def writeNbytes(self, image, N):
if N % 2:
self.throwError("N should be even, not %d" % N)
isEmpty = True
#N = (pN, len(image))[len(image) < pN]
for idx in range(0, N):
if idx == len(image):
image += '\xFF'
elif image[idx] != '\xFF':
isEmpty = False
if(not isEmpty):
for wordAddr in range(0, N-2, 2):
self.send4bitWriteInstruction(self.CMD_TWII, byte2int(image[wordAddr]) | (byte2int(image[wordAddr + 1]) << 8))
self.send4bitWriteInstruction(self.CMD_TW_START_PROG, byte2int(image[N-2]) | (byte2int(image[N-1]) << 8))
self.top.cmdFPGAWrite(0x12, 0x81)
self.top.hostDelay(self.delayP9)
self.setPins(0)
self.top.cmdDelay(self.delayP10)
for i in range(0,4):
self.sendCommand(1)
def writeUserIdLocation(self, image):
self.writeSequentialBlock(self.userIDLocationAddr, image, self.userIDLocationSize, "Writing User ID Locations")
def checkSignature(self):
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 writeProgmem(self, image):
nrBytes = self.flashPages * self.flashPageSize
if len(image) > nrBytes:
self.throwError("Invalid flash image size %d (expected <=%d)" % \
(len(image), nrBytes))
self.writeSequentialBlock(0, image, nrBytes, "Writing flash")
def writeFuse(self, image):
self.enterPM()
if len(image) > self.fuseBytes:
self.throwError("Invalid Fuses image size %d (expected less than %d)" % \
(len(image), self.fuseBytes))
self.executeCode((0x8EA6, 0x8CA6, 0xEF00, 0xF800))
for fuseAddr in range(0,len(image)):
self.executeCode(self.getCodeAddrToTBLPTR(self.configWordAddr+fuseAddr))
if(fuseAddr & 0x01):
byte = byte2int(image[fuseAddr]) << 8
else:
byte = byte2int(image[fuseAddr])
self.send4bitWriteInstruction(self.CMD_TW_START_PROG, byte)
self.top.cmdFPGAWrite(0x12, 0x81)
#self.setPins(1)
self.top.hostDelay(self.delayP9)
self.setPins(0)
self.top.cmdDelay(self.delayP10)
for i in range(0,4):
self.sendCommand(1)
#self.executeCode((0x2AF6,))
self.writeSequentialBlock(self.configWordAddr, image, self.fuseBytes, "Writing fuses")
self.progressMeterInit("Writing fuses", 0)
def exitPM(self):
"Exit programming mode. Vdd last exit mode"
self.top.flushCommands()
self.setPins(0, 0)
self.applyVPP(False)
self.applyVCC(False)
self.applyGND(False)
self.isInPmMode = False
# ready for 18F below
def send4bitReadInstruction(self, pInstruction):
def incBbAndCheckFillImage():
self.BufferedBytes += 1
if self.BufferedBytes == self.top.getBufferRegSize():
self.flushBufferToImage()
# self.sendCommand(1,0,1,pInstruction)
self.sendCommand(1, 0, 1, pInstruction)
# self.busyWait()
self.readSDOBufferHigh()
incBbAndCheckFillImage()
def send4bitWriteInstruction(self, pInstruction, pDataPayload):
# self.busyWait()
self.setSDI(pDataPayload)
#print("sending {:x}\n".format(pDataPayload))
self.sendCommand(1, 1, 0, pInstruction)
self.top.flushCommands()
def sendCommand(self, bit4bitInstr=1, bitSendData=0, bitReadData=0, cmd4bit=0, bitKeepClkHigh=0):
'''
`define CMDBIT_4BITINSTR 0
`define CMDBIT_SENDDATA 1
`define CMDBIT_READDATA 2
`define CMDBIT_KEEPCLKHIGH 7
'''
command = (cmd4bit & 0x0F) << 3
if bit4bitInstr:
command |= 2 ** self.PCMDBIT_4BITINSTR
if bitSendData:
command |= 2 ** self.PCMDBIT_SENDDATA
if bitReadData:
command |= 2 ** self.PCMDBIT_READDATA
if bitKeepClkHigh:
command |= 2 ** self.PCMDBIT_KEEPCLKHIGH
# print("cmd sending {:x}\n".format(command))
self.top.cmdFPGAWrite(0x12, command)
if(bitSendData or bitReadData):
self.top.cmdDelay(2 * 20 * 2 * self.delayP2A)
else:
self.top.cmdDelay(2 * 4 * 2 * self.delayP2A)
def setTopProgrammerDelays(self):
#print("tdel5:{:d}".format(int(math.ceil(self.delayP2A / 42e-9))))
#print("tdly:{:d}".format(int(math.ceil(self.delayP5 / 42e-9))))
self.top.cmdFPGAWrite(0x10, int(math.ceil(self.delayP2A / 42e-9)))
self.top.cmdFPGAWrite(0x11, int(math.ceil(self.delayP5 / 42e-9)))
def setSDI8(self, sdi):
self.top.cmdFPGAWrite(0x16, sdi & 0xFF)
def setSDI(self, sdi):
'''
16 -set 16 bit sdi value
'''
for addr in (0x16, 0x17):
self.top.cmdFPGAWrite(addr, sdi & 0xFF)
sdi = sdi >> 8
def flushBufferToImage(self):
# print ("storing {:d} bytes to image".format(self.BufferedBytes))
if self.BufferedBytes > 0:
self.Image += self.top.cmdReadBufferReg(self.BufferedBytes)
self.BufferedBytes = 0
def sendInstruction(self, instr):
self.setSDI(instr)
self.sendCommand(1, 1) # send 4 times positive edge
# self.top.flushCommands()
def executeCode(self, code):
for instr in code:
self.sendInstruction(instr)
def setPins(self, ICSPCLK=0, SDIOVALUE=0, SDIODRIVEN=1):
'''
16 - setPins
'''
data = 0
if ICSPCLK:
data |= 1
if SDIODRIVEN:
data |= 2
if SDIOVALUE:
data |= 4
self.top.cmdFPGAWrite(0x15, data)
def getStatusFlags(self):
'''
[0] - BUSY
[1] - SDO
'''
self.flushBufferToImage()
self.top.cmdFPGARead(0x12)
stat = self.top.cmdReadBufferReg()
return byte2int(stat[0])
def readSDOBufferHigh(self):
self.top.cmdFPGARead(0x14)
def readSDOBufferLow(self):
self.top.cmdFPGARead(0x15)
def rawSDIOState(self):
return bool(self.getStatusFlags() & self.STAT_SDIO)
def isBusy(self):
return bool(self.getStatusFlags() & self.STAT_BUSY)
def busyWait(self):
for i in range(0, 100):
if not self.isBusy():
return
self.top.hostDelay(0.000001)
self.throwError("Timeout in busywait.")
def getCodeAddrToTBLPTR(self, addr):
ub = (addr >> 16) & 0xFF
hb = (addr >> 8) & 0xFF
lb = addr & 0xFF
return ((0x0E00 | ub), 0x6EF8, (0x0E00 | hb), 0x6EF7, (0x0E00 | lb), 0x6EF6)
|