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tools/upload: make I/O a bit slower

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Without delays between read/writes, I often add lockups.
This commit is contained in:
Virgil Dupras 2019-05-07 14:49:34 -04:00
parent cc62991f4e
commit 9c7f006d47
1 changed files with 7 additions and 1 deletions
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8
tools/upload.py
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@ -8,6 +8,7 @@
import argparse import argparse
import os import os
import sys import sys
import time
def sendcmd(fd, cmd): def sendcmd(fd, cmd):
# The serial link echoes back all typed characters and expects us to read # The serial link echoes back all typed characters and expects us to read
@ -35,7 +36,11 @@ def main():
print("Loading...") print("Loading...")
with open(args.filename, 'rb') as fp: with open(args.filename, 'rb') as fp:
fcontents = fp.read() fcontents = fp.read()
os.write(fd, fcontents) for c in fcontents:
os.write(fd, bytes([c]))
# Let's give the machine a bit of time to breathe. We ain't in a
# hurry now, are we?
time.sleep(0.0001)
print("Loaded") print("Loaded")
os.read(fd, 5) os.read(fd, 5)
print("Peeking back...") print("Peeking back...")
@ -43,6 +48,7 @@ def main():
peek = b'' peek = b''
while len(peek) < st.st_size * 2: while len(peek) < st.st_size * 2:
peek += os.read(fd, 1) peek += os.read(fd, 1)
time.sleep(0.0001)
os.close(fd) os.close(fd)
print("Got {}".format(peek.decode())) print("Got {}".format(peek.decode()))
print("Comparing...") print("Comparing...")