diff options
Diffstat (limited to 'projects/cli-test/filetransfer')
| -rwxr-xr-x | projects/cli-test/filetransfer | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/projects/cli-test/filetransfer b/projects/cli-test/filetransfer index 451a1d9..3e8e043 100755 --- a/projects/cli-test/filetransfer +++ b/projects/cli-test/filetransfer @@ -64,13 +64,19 @@ def send_file(filename, device='/dev/ttyUSB0', initiate=True): _read(dst) # 2. Write file contents while calculating CRC-32 crc = 0 + counter = 0 while True: - data = src.read(1024) + data = src.read(4096) if not data: break dst.write(data) print("Wrote {!s} bytes".format(len(data))) crc = crc32(data, crc) & 0xffffffff + new_counter = struct.unpack('<I', dst.read(4))[0] + if new_counter != counter + 1: + print('ERROR: Did not receive the expected counter as ACK (got {!r}, not {!r})'.format(new_counter, counter)) + return False + counter += 1 # 3. Write CRC-32 (4 bytes) _write(dst, struct.pack('<I', crc)) _read(dst) |