From a1a1c89b91fc9476c51981699aaa7c2bccdd8570 Mon Sep 17 00:00:00 2001
From: tao_z <tzj0429@163.com>
Date: Sun, 07 Aug 2022 14:19:02 +0800
Subject: [PATCH] SX7H初步完成
---
hexread.py | 103 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 103 insertions(+), 0 deletions(-)
diff --git a/hexread.py b/hexread.py
new file mode 100644
index 0000000..250fb35
--- /dev/null
+++ b/hexread.py
@@ -0,0 +1,103 @@
+"""
+HEX格式文件以行为单位记录数据，每行都由任意数量的十六进制数组成。
+
+每一行的格式如下：
+
+：本行数据长度(2byte)+数据起始地址(4byte)+数据类型(2byte)+数据内容(N byte)+校验(1byte)
+"""
+
+from aenum import IntEnum
+import binascii
+
+HEX_LEN_H = 1
+HEX_LEN_L = 2
+
+HEX_ADDR_HH = 3
+HEX_ADDR_HL = 4
+HEX_ADDR_LH = 5
+HEX_ADDR_LL = 6
+
+HEX_DATA_TYPE_H = 7
+HEX_DATA_TYPE_L = 8
+
+HEX_DATA_START = 9
+
+HexTable = {
+ 48: 0,
+ 49: 1,
+ 50: 2,
+ 51: 3,
+ 52: 4,
+ 53: 5,
+ 54: 6,
+ 55: 7,
+ 56: 8,
+ 57: 9,
+ 65: 10,
+ 66: 11,
+ 67: 12,
+ 68: 13,
+ 69: 14,
+ 70: 15
+}
+
+
+class HexDataType(IntEnum):
+ DataRecord = 0
+ FileEnd = 1
+ ExtentionAddr = 2
+ StartSectionAddr = 3
+ ExtentionLinearAddr = 4
+ StartLinearSectionAddr = 3
+
+
+class Hex_read(object):
+
+ def __init__(self):
+ self.start_addr = 0
+ self.len = 0
+ self.data = b''
+
+ def Open_file(self, file):
+ self.file = file
+ self.start_addr = 0
+ self.len = 0
+ self.data = b''
+
+ with open(file, 'rb') as fd:
+ for aLineData in fd:
+ if aLineData[0] == 0x3A: # 0x3A == ":"
+ # print(aLineData)
+ DataLen = HexTable[aLineData[HEX_LEN_H]] * 16 + HexTable[
+ aLineData[HEX_LEN_L]]
+ Data_Addr = HexTable[
+ aLineData[HEX_ADDR_HH]] * 16 * 16 * 16 + HexTable[
+ aLineData[HEX_ADDR_HL]] * 16 * 16 + HexTable[
+ aLineData[HEX_ADDR_LH]] * 16 + HexTable[
+ aLineData[HEX_ADDR_LL]]
+ Data_Type = HexTable[
+ aLineData[HEX_DATA_TYPE_H]] * 16 + HexTable[
+ aLineData[HEX_DATA_TYPE_L]]
+ if Data_Type == HexDataType.FileEnd:
+ break
+ if Data_Type == HexDataType.ExtentionLinearAddr:
+ self.start_addr = HexTable[aLineData[
+ HEX_DATA_START]] << 28 | HexTable[aLineData[
+ HEX_DATA_START + 1]] << 20 | HexTable[
+ aLineData[HEX_DATA_START +
+ 2]] << 12 | HexTable[aLineData[
+ HEX_DATA_START + 3]] << 4
+ # print(self.start_addr)
+ if Data_Type == HexDataType.DataRecord:
+ if self.len == 0:
+ self.start_addr += Data_Addr
+ self.len += DataLen
+ self.data += aLineData[HEX_DATA_START:HEX_DATA_START +
+ DataLen * 2]
+
+ fd.close()
+ self.data = binascii.a2b_hex(self.data)
+
+ # print(len(self.data))
+ # print(self.start_addr)
+ # print(bin_file[0:20])
--
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