def upload(self, filePath):
flashPageSize = 128
self.resolve_target()
reader = HexFileFormat(filePath)
lines = reader.get_bytes()
startAddress, foo = lines[0]
toWrite = bytearray()
for (address, data) in lines:
toWrite += data
length = len(toWrite)
programmer = AvrIspFlow(self.xbee)
print("configuring target addresses")
self.configure_target()
try:
print("resetting target")
self.reset_target()
programmer.getTargetParameters()
print("beginning programming sequence")
programmer.enterProgMode()
print("ready for upload")
pagesToWrite = length / flashPageSize
if pagesToWrite > int(pagesToWrite):
pagesToWrite = int(pagesToWrite) + 1
for pageNo in range(0, int(pagesToWrite)):
startByte = pageNo*flashPageSize
page = toWrite[startByte:startByte+flashPageSize]
if len(page) < flashPageSize:
for i in range(flashPageSize - len(page)):
page += b'\xFF'
programmer.writeRomPage(startAddress + startByte, page)
programmer.leaveProgMode()
print("Verifying %d bytes beginning with start address 0x%x" % (length, startAddress))
readPages = bytearray()
readPageSize = 128
readPageNo = length / readPageSize
readPageWholeNo = int(readPageNo) +1
for i in range(0, readPageWholeNo):
readPages += programmer.readRomPage(startAddress + i*readPageSize, readPageSize)
readPages = readPages[:length]
if readPages != toWrite:
raise Exception("Failed validation")
finally:
self.restore_target()
pass
def download(self, startAddress, length, filePath):
pageSize = min(248, length)
data = bytearray()
address = startAddress
pages = int(length / pageSize)
programmer = AvrIspFlow(self.xbee)
self.resolve_target()
self.reset_target()
programmer.getTargetParameters()
for i in range(0, pages):
dataPage = programmer.readRomPage(address, pageSize)
if len(dataPage) < pageSize:
raise Exception("Read less bytes than the expected page size")
data += dataPage
address += pageSize
if pages * pageSize < length:
remainder = length - pages * pageSize
print("reading remainder " + str(remainder))
data += programmer.readRomPage(address, remainder)
self.restore_target()
writer = HexFileFormat(filePath)
writer.save_bytes(data, startAddress)