1 files changed, 70 insertions, 0 deletions
diff --git a/bootloader/ota-dfu-python/util.py b/bootloader/ota-dfu-python/util.py
new file mode 100644
index 00000000..401d4948
--- /dev/null
+++ b/bootloader/ota-dfu-python/util.py
@@ -0,0 +1,70 @@
+import sys
+import binascii
+import re
+
+def bytes_to_uint32_le(bytes):
+    return  (int(bytes[3], 16) << 24) | (int(bytes[2], 16) << 16) | (int(bytes[1], 16) <<  8) | (int(bytes[0], 16) <<  0)
+
+def uint32_to_bytes_le(uint32):
+    return [(uint32 >> 0)  & 0xff, 
+            (uint32 >> 8)  & 0xff, 
+            (uint32 >> 16) & 0xff, 
+            (uint32 >> 24) & 0xff]
+
+def uint16_to_bytes_le(value):
+    return [(value >> 0 & 0xFF),
+            (value >> 8 & 0xFF)]
+
+def zero_pad_array_le(data, padsize):
+    for i in range(0, padsize):
+        data.insert(0, 0)
+
+def array_to_hex_string(arr):
+    hex_str = ""
+    for val in arr:
+        if val > 255:
+            raise Exception("Value is greater than it is possible to represent with one byte")
+        hex_str += "%02x" % val
+
+    return hex_str
+
+def crc32_unsigned(bytestring):
+    return binascii.crc32(bytestring.encode('UTF-8')) % (1 << 32)
+
+def mac_string_to_uint(mac):
+    parts = list(re.match('(..):(..):(..):(..):(..):(..)', mac).groups())
+    ints = [int(x, 16) for x in parts]
+
+    res = 0
+    for i in range(0, len(ints)):
+        res += (ints[len(ints)-1 - i] << 8*i)
+
+    return res
+
+def uint_to_mac_string(mac):
+    ints = [0, 0, 0, 0, 0, 0]
+    for i in range(0, len(ints)):
+        ints[len(ints)-1 - i] = (mac >> 8*i) & 0xff
+
+    return ':'.join(['{:02x}'.format(x).upper() for x in ints])
+
+# Print a nice console progress bar
+def print_progress(iteration, total, prefix = '', suffix = '', decimals = 1, barLength = 100):
+    """
+    Call in a loop to create terminal progress bar
+    @params:
+        iteration   - Required  : current iteration (Int)
+        total       - Required  : total iterations (Int)
+        prefix      - Optional  : prefix string (Str)
+        suffix      - Optional  : suffix string (Str)
+        decimals    - Optional  : positive number of decimals in percent complete (Int)
+        barLength   - Optional  : character length of bar (Int)
+    """
+    formatStr       = "{0:." + str(decimals) + "f}"
+    percents        = formatStr.format(100 * (iteration / float(total)))
+    filledLength    = int(round(barLength * iteration / float(total)))
+    bar             = 'x' * filledLength + '-' * (barLength - filledLength)
+    sys.stdout.write('\r%s |%s| %s%s %s (%d of %d bytes)' % (prefix, bar, percents, '%', suffix, iteration, total)),
+    if iteration == total:
+        sys.stdout.write('\n')
+    sys.stdout.flush()