diff options
Diffstat (limited to 'projects/cli-test/filetransfer')
| -rwxr-xr-x | projects/cli-test/filetransfer | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/projects/cli-test/filetransfer b/projects/cli-test/filetransfer index 3e8e043..674a7f1 100755 --- a/projects/cli-test/filetransfer +++ b/projects/cli-test/filetransfer @@ -51,7 +51,7 @@ def send_file(filename, device='/dev/ttyUSB0', initiate=True): size = s.st_size src = open(filename, 'rb') - dst = serial.Serial(device, 921600, timeout=1) + dst = serial.Serial(device, 921600, timeout=0.1) if initiate: response = _execute(dst, 'filetransfer') @@ -71,12 +71,25 @@ def send_file(filename, device='/dev/ttyUSB0', initiate=True): 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] + # read ACK (a counter of number of 4k chunks received) + while True: + ack = dst.read(4) + if len(ack) == 4: + break + print('ERROR: Did not receive an ACK, got {!r}'.format(ack)) + dst.write('\r') + new_counter = struct.unpack('<I', ack)[0] if new_counter != counter + 1: - print('ERROR: Did not receive the expected counter as ACK (got {!r}, not {!r})'.format(new_counter, counter)) + print('ERROR: Did not receive the expected counter as ACK (got {!r}/{!r}, not {!r})'.format(new_counter, ack, counter)) + flush = dst.read(100) + print('FLUSH data: {!r}'.format(flush)) return False counter += 1 + + crc = crc32(data, crc) & 0xffffffff + + _read(dst) + # 3. Write CRC-32 (4 bytes) _write(dst, struct.pack('<I', crc)) _read(dst) |