def internal_read(self, page, ecc_state = 1):
addr = page * self.max_page_size_info
txdata = pack32L(addr) + pack16L(ecc_state) + struct.pack("<" + "I"*3, self.max_block_cnt_info, self.max_block_size_info, self.max_page_size_info)
txdata += "\x00" * (self.header_len - len(txdata))
data = self.send_command(self.Commands.CMD_NAND_IMAGE_READ_PAGE, \
self.Commands.CMD_NAND_IMAGE_READ_PAGE, txdata)
page_data = data[self.header_len:]
return page_data
def send(self, data, empty_header = False):
crc = self.__crc_calculator.calc(data)
if self.__crc_big_endian:
data += pack16B(crc)
else:
data += pack16L(crc)
if (self.__tx_escape):
data = self.hdlc_escape(data)
#add 7e at beginning & end
if self.__special_header:
out_data = self.__special_header
elif self.__empty_header or empty_header:
out_data = ""
else:
out_data = "\x7E"
out_data += data
out_data += "\x7E"
self.base.send(out_data)
def change_mode(self, mode):
"""
change to offline mode. gets an enum ControlModes.
"""
return self.__send_command(self.Commands.DIAG_CONTROL_F, pack16L(mode))
def __peek(self, command, addr, codeword_count, codeword_size):
return self.__send_command(
command, tx=pack32L(addr) +
pack16L(codeword_count))[6:6 + codeword_count * codeword_size]
def send(self, data):
# 42 is always there in the tfs
# the +2 is for the crc
data = pack16L(len(data)+2)+ "\x42" + data + pack16B(self.crc.calc(data))
data = "\x7f" + data + "\x7e"
self.base.send(data)
def send(self, command):
command += "\x00"
out_data = "\x00\x05" + pack16L(len(command)) + command
self.base.send(out_data)