hitfzyangdianshi
commented
4 years ago and I met another error when I run receiver program on the device `send error: expected ACK; got b'\x1b' for block 1
send error: expected ACK; got b'[' for block 1
send error: expected ACK; got b'2' for block 1
send error: expected ACK; got b'3' for block 1 send error: expected ACK; got b'D' for block 1 send error: expected ACK; got b'\xfe' for block 1 send error: expected ACK; got b'0' for block 1 send error: expected ACK; got b'1' for block 1 send error: expected ACK; got b'2' for block 1 send error: expected ACK; got b'3' for block 1 send error: expected ACK; got b'4' for block 1 send error: expected ACK; got b'5' for block 1 send error: expected ACK; got b'6' for block 1 send error: expected ACK; got b'7' for block 1 send error: expected ACK; got b'8' for block 1 send error: expected ACK; got b'9' for block 1 send error: expected ACK; got b'0' for block 1 send error: NAK received 17 times, aborting.`
the code on the device is:
''' import serial
from xmodem import XMODEM
ser=serial.Serial("/dev/ttyS2",57600)
def getc(size,timeout=10):
return ser.read(size) or Nonedef putc(data,timeout=10):
return ser.write(data) # note that this ignores the timeoutif not ser.isOpen():
ser.open()modem=XMODEM(getc,putc)
stream=open("receive_test01.txt","wb")
modem.recv(stream)
'''
cheesecakegangster
I try to use XMODEM to send a txt file to my embedded device. However, the error information is:
send error: expected NAK, CRC, EOT or CAN; got b'\x00' send error: expected NAK, CRC, EOT or CAN; got b'r' send error: expected NAK, CRC, EOT or CAN; got b't' send error: expected NAK, CRC, EOT or CAN; got b'O' send error: expected NAK, CRC, EOT or CAN; got b'e' send error: expected NAK, CRC, EOT or CAN; got b'W' send error: expected NAK, CRC, EOT or CAN; got b':' send error: expected NAK, CRC, EOT or CAN; got b'm' send error: expected NAK, CRC, EOT or CAN; got b'#' send error: expected NAK, CRC, EOT or CAN; got b'r' send error: expected NAK, CRC, EOT or CAN; got b' ' send error: expected NAK, CRC, EOT or CAN; got b' ' send error: expected NAK, CRC, EOT or CAN; got b' ' send error: expected NAK, CRC, EOT or CAN; got b'1' send error: expected NAK, CRC, EOT or CAN; got b't' send error: expected NAK, CRC, EOT or CAN; got b'1' send error: expected NAK, CRC, EOT or CAN; got b'\n'
...................
my code on my computer is:
def getc(size, timeout=10): return mSerial.port.read(size) or None
def putc(data, timeout=10): return mSerial.port.write(data) # note that this ignores the timeout
stream = open('test1.txt', 'rb') modem = XMODEM(getc, putc) modem.send(stream)
On the embedded device, I use command "rx -X -t 100 test1.txt" to wait for receiving the file