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tools/flterm.py: some cleanup and fix last frame data that was not transmitted

This commit is contained in:
Florent Kermarrec 2015-08-12 11:41:08 +02:00
parent abf9a58a3a
commit 5a3f4e4179
1 changed files with 18 additions and 22 deletions
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28
tools/flterm.py
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@ -5,6 +5,7 @@ import time
import serial
import threading
import argparse
from serial.tools.miniterm import console, character, LF
sfl_magic_len = 14
@ -16,14 +17,14 @@ sfl_cmd_abort = 0x00
sfl_cmd_load = 0x01
sfl_cmd_jump = 0x02
# Replies
sfl_ack_success = 'K'
sfl_ack_crcerror = 'C'
sfl_ack_unknown = 'U'
sfl_ack_error = 'E'
# XXX : can we get CRC16 from a standard Python library as it's done
# for CRC32 with binascii?
crc16_table = [
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
@ -64,7 +65,7 @@ def crc16(l):
crc = 0
for d in l:
crc = crc16_table[((crc >> 8) ^ d) & 0xff] ^ (crc << 8)
return crc
return crc & 0xffff
class SFLFrame:
@ -87,8 +88,8 @@ class SFLFrame:
self.raw = []
self.raw.append(self.length)
self.compute_crc()
self.raw.append((self.crc & 0xff00) >> 8)
self.raw.append(self.crc & 0x00ff)
for d in self.crc.to_bytes(2, "big"):
self.raw.append(d)
self.raw.append(self.cmd)
for d in self.payload:
self.raw.append(d)
@ -165,14 +166,11 @@ class Flterm:
while len(data) != 0:
print("{}%\r".format(100*position//length), end="")
frame = SFLFrame()
if len(data) > 251:
frame_data = data[:251]
frame.length = len(frame_data)+4
frame.length = len(frame_data) + 4
frame.cmd = sfl_cmd_load
frame.payload.append((current_address & 0xff000000) >> 24)
frame.payload.append((current_address & 0x00ff0000) >> 16)
frame.payload.append((current_address & 0x0000ff00) >> 8)
frame.payload.append((current_address & 0x000000ff) >> 0)
for d in current_address.to_bytes(4, "big"):
frame.payload.append(d)
for d in frame_data:
frame.payload.append(d)
if self.send_frame(frame) == 0:
@ -193,10 +191,8 @@ class Flterm:
frame = SFLFrame()
frame.length = 4
frame.cmd = sfl_cmd_jump
frame.payload.append((self.kernel_address & 0xff000000) >> 24)
frame.payload.append((self.kernel_address & 0x00ff0000) >> 16)
frame.payload.append((self.kernel_address & 0x0000ff00) >> 8)
frame.payload.append((self.kernel_address & 0x000000ff) >> 0)
for d in self.kernel_address.to_bytes(4, "big"):
frame.payload.append(d)
self.send_frame(frame)
def detect_magic(self, data):
@ -290,7 +286,7 @@ def _get_args():
parser.add_argument("--port", default="2", help="serial port")
parser.add_argument("--speed", default=115200, help="serial baudrate")
parser.add_argument("--kernel", default=None, help="kernel image")
parser.add_argument("--kernel-adr", default=0x40000000, help="kernel address")
parser.add_argument("--kernel-adr", default="0x40000000", help="kernel address")
return parser.parse_args()
if __name__ == "__main__":