trunk fmt
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@@ -1,22 +1,23 @@
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import sys
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import struct
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import sys
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Import("env")
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# Parse input and create UF2 file
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def create_uf2(source, target, env):
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# source_hex = target[0].get_abspath()
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source_hex = target[0].get_string(False)
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source_hex = '.\\'+source_hex
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source_hex = ".\\" + source_hex
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print("#########################################################")
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print("Create UF2 from "+source_hex)
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print("Create UF2 from " + source_hex)
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print("#########################################################")
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# print("Source: " + source_hex)
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target = source_hex.replace(".hex", "")
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target = target + ".uf2"
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# print("Target: " + target)
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with open(source_hex, mode='rb') as f:
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with open(source_hex, mode="rb") as f:
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inpbuf = f.read()
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outbuf = convert_from_hex_to_uf2(inpbuf.decode("utf-8"))
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@@ -48,9 +49,17 @@ class Block:
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flags = 0x0
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if familyid:
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flags |= 0x2000
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hd = struct.pack("<IIIIIIII",
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UF2_MAGIC_START0, UF2_MAGIC_START1,
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flags, self.addr, 256, blockno, numblocks, familyid)
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hd = struct.pack(
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"<IIIIIIII",
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UF2_MAGIC_START0,
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UF2_MAGIC_START1,
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flags,
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self.addr,
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256,
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blockno,
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numblocks,
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familyid,
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)
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hd += self.bytes[0:256]
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while len(hd) < 512 - 4:
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hd += b"\x00"
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@@ -70,20 +79,20 @@ def convert_from_hex_to_uf2(buf):
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upper = 0
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currblock = None
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blocks = []
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for line in buf.split('\n'):
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for line in buf.split("\n"):
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if line[0] != ":":
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continue
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i = 1
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rec = []
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while i < len(line) - 1:
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rec.append(int(line[i:i+2], 16))
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rec.append(int(line[i : i + 2], 16))
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i += 2
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tp = rec[3]
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if tp == 4:
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upper = ((rec[4] << 8) | rec[5]) << 16
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elif tp == 2:
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upper = ((rec[4] << 8) | rec[5]) << 4
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assert (upper & 0xffff) == 0
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assert (upper & 0xFFFF) == 0
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elif tp == 1:
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break
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elif tp == 0:
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@@ -92,10 +101,10 @@ def convert_from_hex_to_uf2(buf):
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appstartaddr = addr
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i = 4
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while i < len(rec) - 1:
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if not currblock or currblock.addr & ~0xff != addr & ~0xff:
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currblock = Block(addr & ~0xff)
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if not currblock or currblock.addr & ~0xFF != addr & ~0xFF:
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currblock = Block(addr & ~0xFF)
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blocks.append(currblock)
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currblock.bytes[addr & 0xff] = rec[i]
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currblock.bytes[addr & 0xFF] = rec[i]
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addr += 1
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i += 1
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numblocks = len(blocks)
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