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avr.py
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from nhcusb import nhcusb
import spi
import time
import argparse
from intelhex import IntelHex
class avr:
id = b'\x1e' + b'\x93' + b'\x07'
flash_size = 8 * 1024
flash_page_size = 64
eeprom_size = 512
eeprom_page_size = 1
chip_erase_time = 10 #10ms
page_write_time = 5 #5ms
eeprom_write_time = 9 #9ms
fuse_write_time = 5 #5ms
ver = "NHC_PROG SPI v220601"
nhcspi = spi.spi()
def is_hex_file(self, filename):
name = filename.lower()
n = len(name)
tmp = name[n - 4: n]
if tmp == '.hex':
return 1
tmp = name[n - 4: n]
if tmp == '.eep':
return 1
tmp = name[n - 5: n]
if tmp == '.ihex':
return 1
return 0
def hex_parse(self, input):
return int(input, 0)
def open_prog(self):
return self.nhcspi.open()
def close_prog(self):
self.nhcspi.close()
def get_hw_ver(self):
return self.nhcspi.get_ver()
def init_prog(self, clock = 100000):
return self.nhcspi.spi_init(clock, 0)
def exit_prog(self):
return self.nhcspi.spi_exit(0)
def prog_mode(self):
tmp = bytearray(4)
tmp[0] = 0xac
tmp[1] = 0x53
tmp[2] = 0x00
tmp[3] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return 0
return tmp[2] == 0x53
def check_id(self):
tmp = bytearray(12)
tmp[0] = 0x30
tmp[1] = 0x00
tmp[2] = 0x00
tmp[3] = 0x00
tmp[4] = 0x30
tmp[5] = 0x00
tmp[6] = 0x01
tmp[7] = 0x00
tmp[8] = 0x30
tmp[9] = 0x00
tmp[10] = 0x02
tmp[11] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return 0
return (tmp[3] == self.id[0]) and (tmp[7] == self.id[1]) and (tmp[11] == self.id[2])
def erase(self):
tmp = bytearray(4)
tmp[0] = 0xac
tmp[1] = 0x80
tmp[2] = 0x00
tmp[3] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return 0
time.sleep(self.chip_erase_time * 0.001)
return 1
def read_flash(self, address, length):
if length < 16:
#truong hop doc nho hon 16 byte
n = length
n *= 4
tmp = bytearray(n)
address //= 2
length //= 2
for i in range(length):
tmp[i * 8] = 0x20
tmp[i * 8 + 1] = (address + i) // 256
tmp[i * 8 + 2] = (address + i) % 256
tmp[i * 8 + 3] = 0x00
tmp[i * 8 + 4] = 0x28
tmp[i * 8 + 5] = (address + i) // 256
tmp[i * 8 + 6] = (address + i) % 256
tmp[i * 8 + 7] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return (0, tmp)
length *= 2
res = bytearray(length)
for i in range(length):
res[i] = tmp[i * 4 + 3]
return (1, res)
else:
#truong hop doc lon hon 16 byte
n = length
n *= 4
tmp = bytearray(n)
address //= 2
length //= 2
for i in range(length):
tmp[i * 8] = 0x20
tmp[i * 8 + 1] = (address + i) // 256
tmp[i * 8 + 2] = (address + i) % 256
tmp[i * 8 + 3] = 0x00
tmp[i * 8 + 4] = 0x28
tmp[i * 8 + 5] = (address + i) // 256
tmp[i * 8 + 6] = (address + i) % 256
tmp[i * 8 + 7] = 0x00
(res, tmp) = self.nhcspi.spi_exch_n(tmp)
if res == 0:
return (0, tmp)
length *= 2
res = bytearray(length)
for i in range(length):
res[i] = tmp[i * 4 + 3]
return (1, res)
def write_flash(self, data, address):
need = 0
pos = 0
n = len(data)
for i in range(n):
if data[i] != 0xff:
need = 1
pos = i
break
if need == 0:
return 1
if n < 16:
tmp = bytearray(n * 4)
n //= 2
for i in range(n):
tmp[i * 8] = 0x40
tmp[i * 8 + 1] = 0x00
tmp[i * 8 + 2] = i
tmp[i * 8 + 3] = data[i * 2]
tmp[i * 8 + 4] = 0x48
tmp[i * 8 + 5] = 0x00
tmp[i * 8 + 6] = i
tmp[i * 8 + 7] = data[i * 2 + 1]
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return 0
tmp = bytearray(4)
tmp[0] = 0x4c
tmp[1] = (address // 2) // 256
tmp[2] = (address // 2) % 256
tmp[3] = 0
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return 0
#polling
poll = 0
for i in range (self.page_write_time):
tmp = bytearray(4)
if pos % 2:
tmp[0] = 0x28
else:
tmp[0] = 0x20
tmp[1] = ((address) // 2) // 256
tmp[2] = ((address) // 2) % 256
tmp[3] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return 0
if tmp[3] == data[pos]:
poll = 1
break
time.sleep(0.001)
if poll == 0:
return 0
else:
tmp = bytearray(n * 4)
n //= 2
for i in range(n):
tmp[i * 8] = 0x40
tmp[i * 8 + 1] = 0x00
tmp[i * 8 + 2] = i
tmp[i * 8 + 3] = data[i * 2]
tmp[i * 8 + 4] = 0x48
tmp[i * 8 + 5] = 0x00
tmp[i * 8 + 6] = i
tmp[i * 8 + 7] = data[i * 2 + 1]
(res, tmp) = self.nhcspi.spi_exch_n(tmp)
if res == 0:
return 0
tmp = bytearray(4)
tmp[0] = 0x4c
tmp[1] = (address // 2) // 256
tmp[2] = (address // 2) % 256
tmp[3] = 0
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return 0
#polling
poll = 0
for i in range (self.page_write_time):
tmp = bytearray(4)
if pos % 2:
tmp[0] = 0x28
else:
tmp[0] = 0x20
tmp[1] = ((address) // 2) // 256
tmp[2] = ((address) // 2) % 256
tmp[3] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return 0
if tmp[3] == data[pos]:
poll = 1
break
time.sleep(0.001)
if poll == 0:
return 0
return 1
def write_eeprom(self, data, address):
if data == 0xff:
return 1
tmp = bytearray(4)
tmp[0] = 0xc0
tmp[1] = address // 256
tmp[2] = address % 256
tmp[3] = data
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return 0
#polling
poll = 0
for i in range (self.eeprom_write_time):
tmp = bytearray(4)
tmp[0] = 0xa0
tmp[1] = address // 256
tmp[2] = address % 256
tmp[3] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return 0
if tmp[3] == data:
poll = 1
break
time.sleep(0.001)
if poll == 0:
return 0
return 1
def read_eeprom(self, address, length):
if length < 16:
#truong hop doc nho hon 16 byte
n = length
n *= 4
tmp = bytearray(n)
for i in range(n):
tmp[0] = 0xa0
tmp[1] = (address + i) // 256
tmp[2] = (address + i) % 256
tmp[3] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return (0, tmp)
res = bytearray(length)
for i in range(length):
res[i] = tmp[i * 4 + 3]
return (1, res)
else:
#truong hop doc lon hon 16 byte
n = length
n *= 4
tmp = bytearray(n)
for i in range(length):
tmp[i * 4] = 0xa0
tmp[i * 4 + 1] = (address + i) // 256
tmp[i * 4 + 2] = (address + i) % 256
tmp[i * 4 + 3] = 0x00
(res, tmp) = self.nhcspi.spi_exch_n(tmp)
if res == 0:
return (0, tmp)
res = bytearray(length)
for i in range(length):
res[i] = tmp[i * 4 + 3]
return (1, res)
#write fuse E
def write_fuse_e(self, fuseVal):
tmp = bytearray(4)
tmp[0] = 0xac
tmp[1] = 0xa4
tmp[2] = 0x00
tmp[3] = fuseVal
(res, tmp) = self.nhcspi.spi_exch(tmp)
time.sleep(self.fuse_write_time * 0.001)
return res
#write fuse H
def write_fuse_h(self, fuseVal):
tmp = bytearray(4)
tmp[0] = 0xac
tmp[1] = 0xa8
tmp[2] = 0x00
tmp[3] = fuseVal
(res, tmp) = self.nhcspi.spi_exch(tmp)
time.sleep(self.fuse_write_time * 0.001)
return res
#write fuse L
def write_fuse_l(self, fuseVal):
tmp = bytearray(4)
tmp[0] = 0xac
tmp[1] = 0xa0
tmp[2] = 0x00
tmp[3] = fuseVal
(res, tmp) = self.nhcspi.spi_exch(tmp)
time.sleep(self.fuse_write_time * 0.001)
return res
#read fuse E
def read_fuse_e(self):
tmp = bytearray(4)
tmp[0] = 0x50
tmp[1] = 0x08
tmp[2] = 0x00
tmp[3] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return (0, 0)
return (1, tmp[3])
#read fuse H
def read_fuse_h(self):
tmp = bytearray(4)
tmp[0] = 0x58
tmp[1] = 0x08
tmp[2] = 0x00
tmp[3] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return (0, 0)
return (1, tmp[3])
#read fuse L
def read_fuse_l(self):
tmp = bytearray(4)
tmp[0] = 0x50
tmp[1] = 0x00
tmp[2] = 0x00
tmp[3] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return (0, 0)
return (1, tmp[3])
#read lock bits
def read_lock(self):
tmp = bytearray(4)
tmp[0] = 0x58
tmp[1] = 0x00
tmp[2] = 0x00
tmp[3] = 0x00
(res, tmp) = self.nhcspi.spi_exch(tmp)
if res == 0:
return (0, 0)
return (1, tmp[3])
#write lock bits
def write_lock(self, lock):
tmp = bytearray(4)
tmp[0] = 0xac
tmp[1] = 0xe0
tmp[2] = 0x00
tmp[3] = lock
(res, tmp) = self.nhcspi.spi_exch(tmp)
time.sleep(self.chip_erase_time * 0.001)
return res
def process(self):
#main program
parser = argparse.ArgumentParser()
parser.add_argument("--clock", help="Clock in Hz, ex: 100000", type=int)
parser.add_argument("--check_id", help="check MCU ID (y/n)")
parser.add_argument("--erase", help="erase Flash (y/n)")
parser.add_argument("--blank_check", help="blank check Flash (y/n)")
parser.add_argument("--write_flash", help="Flash file: input.hex, input.bin")
parser.add_argument("--read_flash", help = "Flash file: output.hex, output.bin")
parser.add_argument("--verify_flash", help = "Flash file: input.hex, input.bin")
parser.add_argument("--write_eeprom", help="EEPROM file: input.hex, input.bin")
parser.add_argument("--read_eeprom", help = "EEPROM file: output.hex, output.bin")
parser.add_argument("--verify_eeprom", help = "EEPROM file: input.hex, input.bin")
parser.add_argument("--write_fuseE", help="Fuse E, ex: 0xFE")
parser.add_argument("--write_fuseH", help="Fuse H, ex: 0xFE")
parser.add_argument("--write_fuseL", help="Fuse L, ex: 0xFE")
parser.add_argument("--read_fuseE", help="Fuse E (y/n)")
parser.add_argument("--read_fuseH", help="Fuse H (y/n)")
parser.add_argument("--read_fuseL", help="Fuse L (y/n)")
parser.add_argument("--read_lock", help = "Read lock bits (y/n)")
parser.add_argument("--write_lock", help = "Write lock bits, ex: 0xFE")
args = parser.parse_args()
print("=======================================================================================")
print("openprog by Ngo Hung Cuong")
print("=======================================================================================")
if self.open_prog() == 0:
raise("Open Prog: FAIL")
if self.ver != self.get_hw_ver():
self.close_prog()
raise("Firmware: FAIL")
if (args.clock != None) and (args.clock != 0):
if self.init_prog(args.clock) == 0:
raise("Init Prog: FAIL")
else:
if self.init_prog() == 0:
raise("Init Prog: FAIL")
if self.prog_mode() == 0:
self.exit_prog()
self.close_prog()
raise("Programming mode: FAIL")
#check ID
if args.check_id == 'y':
if self.check_id() == 0:
self.exit_prog()
self.close_prog()
raise("Check ID: FAIL")
#erase
if args.erase == 'y':
if self.erase() == 0:
self.exit_prog()
self.close_prog()
raise("Erase: FAIL")
print("Erase: Done")
#blank check
if args.blank_check == 'y':
print("Blank check:")
page_size = 512
for i in range(self.flash_size // page_size):
(res, tmp) = self.read_flash(i * page_size, page_size)
if res == 0:
self.exit_prog()
self.close_prog()
raise("Read flash: FAIL")
for j in range(page_size):
if tmp[j] != 0xff:
self.exit_prog()
self.close_prog()
raise("Blank check: FAIL")
print(".", end='', sep='', flush=True)
print("\n")
#write flash
if args.write_flash != None:
print("Write flash:")
ih = IntelHex()
if self.is_hex_file(args.write_flash) == 1:
ih.fromfile(args.write_flash, format='hex')
else:
ih.fromfile(args.write_flash, format='bin')
writebuff = ih.tobinarray(0, self.flash_size - 1)
page_size = self.flash_page_size
for i in range(self.flash_size // page_size):
res = self.write_flash(writebuff[(i * page_size): (i * page_size + page_size)], i * page_size)
if res == 0:
self.exit_prog()
self.close_prog()
raise("Write flash: FAIL")
print(".", end='', sep='', flush=True)
print("\n")
#read flash
if args.read_flash != None:
print("Read flash:")
ih = IntelHex()
page_size = 512
for i in range(self.flash_size // page_size):
(res, tmp) = self.read_flash(i * page_size, page_size)
if res == 0:
self.exit_prog()
self.close_prog()
raise("Read flash: FAIL")
ih.frombytes(tmp, i * page_size)
print(".", end='', sep='', flush=True)
if self.is_hex_file(args.read_flash) == 1:
ih.write_hex_file(args.read_flash)
else:
ih.tobinfile(args.read_flash)
print("\n")
#verify flash
if args.verify_flash != None:
ih = IntelHex()
if self.is_hex_file(args.verify_flash) == 1:
ih.fromfile(args.verify_flash, format='hex')
else:
ih.fromfile(args.verify_flash, format='bin')
writebuff = ih.tobinarray(0, self.flash_size - 1)
print("Verify flash:")
page_size = 512
for i in range(self.flash_size // page_size):
(res, tmp) = self.read_flash(i * page_size, page_size)
if res == 0:
self.exit_prog()
self.close_prog()
raise("Read flash: FAIL")
for j in range(page_size):
if tmp[j] != writebuff[i * page_size + j]:
self.exit_prog()
self.close_prog()
raise("Verify flash: FAIL")
print(".", end='', sep='', flush=True)
print("\n")
#write eeprom
if args.write_eeprom != None:
print("Write EEPROM:")
ih = IntelHex()
if self.is_hex_file(args.write_eeprom) == 1:
ih.fromfile(args.write_eeprom, format='hex')
else:
ih.fromfile(args.write_eeprom, format='bin')
writebuff = ih.tobinarray(0, self.eeprom_size - 1)
page_size = self.eeprom_page_size
for i in range(self.eeprom_size // page_size):
res = self.write_eeprom(writebuff[i], i)
if res == 0:
self.exit_prog()
self.close_prog()
raise("Write EEPROM: FAIL")
print(".", end='', sep='', flush=True)
print("\n")
#read eeprom
if args.read_eeprom != None:
print("Read EEPROM:")
ih = IntelHex()
if self.eeprom_size > 512:
page_size = 512
else:
page_size = self.eeprom_size
for i in range(self.eeprom_size // page_size):
(res, tmp) = self.read_eeprom(i * page_size, page_size)
if res == 0:
self.exit_prog()
self.close_prog()
raise("Read EEPROM: FAIL")
ih.frombytes(tmp, i * page_size)
print(".", end='', sep='', flush=True)
if self.is_hex_file(args.read_eeprom) == 1:
ih.write_hex_file(args.read_eeprom)
else:
ih.tobinfile(args.read_eeprom)
print("\n")
#verify eeprom
if args.verify_eeprom != None:
print("Verify EEPROM:")
ih = IntelHex()
if self.is_hex_file(args.verify_eeprom) == 1:
ih.fromfile(args.verify_eeprom, format='hex')
else:
ih.fromfile(args.verify_eeprom, format='bin')
writebuff = ih.tobinarray(0, self.eeprom_size - 1)
if self.eeprom_size > 512:
page_size = 512
else:
page_size = self.eeprom_size
for i in range(self.eeprom_size // page_size):
(res, tmp) = self.read_eeprom(i * page_size, page_size)
if res == 0:
self.exit_prog()
self.close_prog()
raise("Read EEPROM: FAIL")
for j in range(page_size):
if tmp[j] != writebuff[i * page_size + j]:
raise("Verify EEPROM: FAIL")
print(".", end='', sep='', flush=True)
print("\n")
#write fuse E
if args.write_fuseE != None:
print("Write Fuse E:")
res = self.write_fuse_e(self.hex_parse(args.write_fuseE))
if res == 0:
self.exit_prog()
self.close_prog()
raise("Write Fuse E: FAIL")
#write fuse H
if args.write_fuseH != None:
print("Write Fuse H:")
res = self.write_fuse_h(self.hex_parse(args.write_fuseH))
if res == 0:
self.exit_prog()
self.close_prog()
raise("Write Fuse H: FAIL")
#write fuse L
if args.write_fuseL != None:
print("Write Fuse L:")
res = self.write_fuse_l(self.hex_parse(args.write_fuseL))
if res == 0:
self.exit_prog()
self.close_prog()
raise("Write Fuse L: FAIL")
#Read fuse E
if args.read_fuseE == 'y':
print("Read Fuse E:")
(res, tmp) = self.read_fuse_e()
if res == 0:
self.exit_prog()
self.close_prog()
raise("Read Fuse E: FAIL")
print(hex(tmp))
#Read fuse H
if args.read_fuseH == 'y':
print("Read Fuse H:")
(res, tmp) = self.read_fuse_h()
if res == 0:
self.exit_prog()
self.close_prog()
raise("Read Fuse H: FAIL")
print(hex(tmp))
#Read fuse L
if args.read_fuseL == 'y':
print("Read Fuse L:")
(res, tmp) = self.read_fuse_l()
if res == 0:
self.exit_prog()
self.close_prog()
raise("Read Fuse L: FAIL")
print(hex(tmp))
#read lock bits
if args.read_lock == 'y':
print("Read lock bits:")
(res, lock) = self.read_lock()
if res == 0:
self.exit_prog()
self.close_prog()
raise("Read lock bits: FAIL")
print(hex(lock))
#write lock bits
if args.write_lock != None:
print("Write lock bits:")
res = self.write_lock(self.hex_parse(args.write_lock))
if res == 0:
self.exit_prog()
self.close_prog()
raise("write lock bits: FAIL")
self.exit_prog()
self.close_prog()
print("Done")
"""
prog = avr()
prog.process()
"""