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ymodem:sbrb.py send command need flush and reset input buffer

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These changes fix reliability issues when initiating ymodem transfers
over serial connections.

Signed-off-by: anjiahao <anjiahao@xiaomi.com>
This commit is contained in:
anjiahao 2025-02-10 12:14:07 +08:00 • committed by Donny(董九柱)
parent 367e9dca01
commit 8804f086b3
1 changed files with 4 additions and 1 deletions
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5
system/ymodem/sbrb.py
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@ -822,7 +822,9 @@ if __name__ == "__main__":
recvfile += i + " "
fd_serial.write(("sb %s\r\n" % (recvfile)).encode())
tmp = fd_serial.read(len(("sb %s\r\n" % (recvfile)).encode()))
fd_serial.flush()
tmp = fd_serial.read(len(("sb %s\r\n" % (recvfile)).encode()) - 1)
fd_serial.reset_input_buffer()
else:
if args.sendto:
cmd = ("rb -f %s\r\n" % (args.sendto[0])).encode()
@ -830,6 +832,7 @@ if __name__ == "__main__":
cmd = ("rb\r\n").encode()
fd_serial.write(cmd)
fd_serial.flush()
fd_serial.read(len(cmd))
fd_serial.reset_input_buffer()