commit 4a70ed45ade745bdfee8902ef50fbcf7008d3db5
Author: fanhuanji <fanhuanji@live.cn>
Date:   Sun Nov 5 10:13:42 2023 +0000

    first commit

diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..5cf6964
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,38 @@
+---
+BasedOnStyle: Microsoft
+Language: Cpp
+
+###################################
+#          indent conf
+###################################
+
+UseTab: Never
+IndentWidth: 4
+TabWidth: 4
+ColumnLimit: 0
+AccessModifierOffset: -4
+NamespaceIndentation: All
+FixNamespaceComments: false
+BreakBeforeBraces: Linux
+
+###################################
+#          other styles
+###################################
+
+# 
+# for more conf, you can ref: https://clang.llvm.org/docs/ClangFormatStyleOptions.html
+#
+
+AllowShortIfStatementsOnASingleLine: true
+
+AllowShortLoopsOnASingleLine: true
+
+AllowShortBlocksOnASingleLine: true
+
+IndentCaseLabels: true
+
+SortIncludes: false
+
+AlignConsecutiveMacros: AcrossEmptyLines
+
+AlignConsecutiveAssignments: Consecutive
diff --git a/.eide/debug.files.options.yml b/.eide/debug.files.options.yml
new file mode 100644
index 0000000..196cc55
--- /dev/null
+++ b/.eide/debug.files.options.yml
@@ -0,0 +1,31 @@
+##########################################################################################
+#                        Append Compiler Options For Source Files
+#
+# syntax:
+#   <your matcher expr>: <your compiler command>
+#
+# examples:
+#   'main.cpp':           --cpp11 -Og ...
+#   'src/*.c':            -gnu -O2 ...
+#   'src/lib/**/*.cpp':   --cpp11 -Os ...
+#   '!Application/*.c':   -O0
+#   '**/*.c':             -O2 -gnu ...
+#
+# For more syntax, please refer to: https://www.npmjs.com/package/micromatch
+#
+##########################################################################################
+
+version: '1.0'
+
+#
+# for source files with filesystem paths
+#
+files:
+#   './test/**/*.c': --c99
+
+#
+# for source files with virtual paths
+#
+virtualPathFiles:
+#   'virtual_folder/**/*.c': --c99
+
diff --git a/.eide/debug.options.sdcc.json b/.eide/debug.options.sdcc.json
new file mode 100644
index 0000000..198e3da
--- /dev/null
+++ b/.eide/debug.options.sdcc.json
@@ -0,0 +1,25 @@
+{
+    "version": 3,
+    "beforeBuildTasks": [],
+    "afterBuildTasks": [
+        {
+            "name": "new postbuild task",
+            "disable": false,
+            "abortAfterFailed": true,
+            "command": "makebin.exe -p -s 32768 \"${OutDir}/${ProjectName}.ihx\" \"${OutDir}/cc.bin\"\necho \"${OutDir}/${ProjectName}.hex ->${OutDir}/cc.bin\""
+        }
+    ],
+    "global": {
+        "device": "mcs51",
+        "optimize-type": "speed",
+        "misc-controls": "-pcc2510fx --iram-size 256 --xram-loc 0xF000 --xram-size 0xF00 --code-size 32768 --model-small"
+    },
+    "c/cpp-compiler": {
+        "language-c": "c11"
+    },
+    "asm-compiler": {},
+    "linker": {
+        "$mainFileName": "main",
+        "output-format": "hex"
+    }
+}
\ No newline at end of file
diff --git a/.eide/eide.json b/.eide/eide.json
new file mode 100644
index 0000000..508aa57
--- /dev/null
+++ b/.eide/eide.json
@@ -0,0 +1,44 @@
+{
+  "name": "VUSION_42_BWR_340",
+  "type": "C51",
+  "dependenceList": [],
+  "srcDirs": [
+    "src",
+    "inc"
+  ],
+  "virtualFolder": {
+    "name": "<virtual_root>",
+    "files": [],
+    "folders": []
+  },
+  "outDir": "build",
+  "deviceName": null,
+  "packDir": null,
+  "miscInfo": {
+    "uid": "5b43a45b37334fd04652e2aa887d9e59"
+  },
+  "targets": {
+    "Debug": {
+      "excludeList": [],
+      "toolchain": "SDCC",
+      "compileConfig": {
+        "options": "null"
+      },
+      "uploader": "Custom",
+      "uploadConfig": {
+        "bin": "build\\Debug\\cc.bin",
+        "commandLine": "python \"D:\\esp\\proj\\serial_cc_debugger\\ctrl.py\" flash COM3 \"${hexFile}\"",
+        "eraseChipCommand": ""
+      },
+      "uploadConfigMap": {},
+      "custom_dep": {
+        "name": "default",
+        "incList": [],
+        "libList": [],
+        "sourceDirList": [],
+        "defineList": []
+      }
+    }
+  },
+  "version": "3.3"
+}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7b045fc
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,68 @@
+# Prerequisites
+*.d
+
+# Object files
+*.o
+*.ko
+*.obj
+*.elf
+
+# Linker output
+*.ilk
+*.map
+*.exp
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Libraries
+*.lib
+*.a
+*.la
+*.lo
+
+# Shared objects (inc. Windows DLLs)
+*.dll
+*.so
+*.so.*
+*.dylib
+
+# Executables
+*.exe
+*.out
+*.app
+*.i*86
+*.x86_64
+*.hex
+
+# Debug files
+*.dSYM/
+*.su
+*.idb
+*.pdb
+
+# Kernel Module Compile Results
+*.mod*
+*.cmd
+.tmp_versions/
+modules.order
+Module.symvers
+Mkfile.old
+dkms.conf
+
+# dot files
+/.vscode/launch.json
+/.settings
+/.eide/log
+/.eide.usr.ctx.json
+
+# project out
+/build
+/bin
+/obj
+/out
+
+# eide template
+*.ept
+*.eide-template
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..9e26dfe
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1 @@
+{}
\ No newline at end of file
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
new file mode 100644
index 0000000..3e192b9
--- /dev/null
+++ b/.vscode/tasks.json
@@ -0,0 +1,40 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "type": "shell",
+            "command": "${command:eide.project.build}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "flash",
+            "type": "shell",
+            "command": "${command:eide.project.uploadToDevice}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "build and flash",
+            "type": "shell",
+            "command": "${command:eide.project.buildAndFlash}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "rebuild",
+            "type": "shell",
+            "command": "${command:eide.project.rebuild}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "clean",
+            "type": "shell",
+            "command": "${command:eide.project.clean}",
+            "group": "build",
+            "problemMatcher": []
+        }
+    ]
+}
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..85ccbcf
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 fanhuanji
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..fa5f6f4
--- /dev/null
+++ b/README.md
@@ -0,0 +1,31 @@
+# VUSION4.2BWR_GL340
+A working NFC demo for EPD VUSION4.2BWR_GL340
+
+## 大图警告
+
+## 效果图
+
+### 手机界面
+
+界面入口：主界面左下角工具->MainEpdTool
+
+![](img/Screenshot_20230905_011119_de.syss.NfcTool.jpg)
+![](img/Screenshot_20230905_004955_de.syss.NfcTool.jpg)
+
+### 墨水屏显示效果
+
+![](img/IMG_20230903_034036.jpg)
+![](img/IMG_20230903_123715.jpg)
+![](img/IMG_20230903_124842.jpg)
+![](img/IMG_20230905_011313.jpg)
+![](img/IMG_20230905_004157.jpg)
+![](img/IMG_20230816_010023.jpg)
+
+## PCB图片
+
+![](img/top_thumb.jpg)
+
+![](img/bottom_thumb.jpg)
+
+![](img/Rev.png)
+
diff --git a/VUSION_42_BWR_340.code-workspace b/VUSION_42_BWR_340.code-workspace
new file mode 100644
index 0000000..e571744
--- /dev/null
+++ b/VUSION_42_BWR_340.code-workspace
@@ -0,0 +1,48 @@
+{
+    "folders": [
+        {
+            "path": "."
+        }
+    ],
+    "settings": {
+        "EIDE.SourceTree.AutoSearchIncludePath": true,
+        "EIDE.SourceTree.AutoSearchObjFile": true,
+        "files.associations": {
+            "*.C": "c",
+            ".eideignore": "ignore",
+            "stdio.h": "c",
+            "*.a51": "a51",
+            "*.h": "c",
+            "*.c": "c",
+            "*.hxx": "cpp",
+            "*.hpp": "cpp",
+            "*.c++": "cpp",
+            "*.cpp": "cpp",
+            "*.cxx": "cpp",
+            "*.cc": "cpp"
+        },
+        "files.autoGuessEncoding": true,
+        "EIDE.ARM.Option.AutoGenerateRTE_Components": false,
+        "C_Cpp.default.configurationProvider": "cl.eide",
+        "C_Cpp.errorSquiggles": "disabled",
+        "[yaml]": {
+            "editor.insertSpaces": true,
+            "editor.tabSize": 4,
+            "editor.autoIndent": "advanced"
+        }
+    },
+    "extensions": {
+        "recommendations": [
+            "cl.eide",
+            "keroc.hex-fmt",
+            "xiaoyongdong.srecord",
+            "hars.cppsnippets",
+            "zixuanwang.linkerscript",
+            "redhat.vscode-yaml",
+            "IBM.output-colorizer",
+            "cschlosser.doxdocgen",
+            "ms-vscode.vscode-serial-monitor",
+            "cl.stm8-debug"
+        ]
+    }
+}
\ No newline at end of file
diff --git a/binary/cc.bin b/binary/cc.bin
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diff --git a/img/IMG_20230816_010023.jpg b/img/IMG_20230816_010023.jpg
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diff --git a/img/IMG_20230903_123715.jpg b/img/IMG_20230903_123715.jpg
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diff --git a/img/IMG_20230903_124842.jpg b/img/IMG_20230903_124842.jpg
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diff --git a/img/IMG_20230905_004157.jpg b/img/IMG_20230905_004157.jpg
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diff --git a/img/IMG_20230905_011313.jpg b/img/IMG_20230905_011313.jpg
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index 0000000..9b2007e
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diff --git a/img/Rev.png b/img/Rev.png
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index 0000000..51b9350
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diff --git a/img/Screenshot_20230905_004955_de.syss.NfcTool.jpg b/img/Screenshot_20230905_004955_de.syss.NfcTool.jpg
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diff --git a/img/Screenshot_20230905_005248_de.syss.NfcTool.jpg b/img/Screenshot_20230905_005248_de.syss.NfcTool.jpg
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diff --git a/img/Screenshot_20230905_011119_de.syss.NfcTool.jpg b/img/Screenshot_20230905_011119_de.syss.NfcTool.jpg
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index 0000000..0bf64ec
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diff --git a/img/bottom.png b/img/bottom.png
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diff --git a/img/bottom_thumb.jpg b/img/bottom_thumb.jpg
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diff --git a/img/top.png b/img/top.png
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diff --git a/img/top_thumb.jpg b/img/top_thumb.jpg
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diff --git a/src/display/ASC16.c b/src/display/ASC16.c
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index 0000000..1eab718
--- /dev/null
+++ b/src/display/ASC16.c
@@ -0,0 +1,3 @@
+
+#include <stdint.h>
+
diff --git a/src/display/epd.c b/src/display/epd.c
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index 0000000..c0432f7
--- /dev/null
+++ b/src/display/epd.c
@@ -0,0 +1,318 @@
+#include "epd.h"
+#include "../util.h"
+#include "../time/time.h"
+
+
+#define PWR_ON EPD_PWR = 0
+#define PWR_OFF EPD_PWR = 1
+#define RESET_ON EPD_RESET = 0
+#define RESET_OFF EPD_RESET = 1
+
+// #define HRES 104
+// #define VRES 212
+
+#define HRES 400
+#define VRES 300
+#define BUFFER_SIZE (HRES / 8 * VRES)
+
+static void inline Epd_SendCommand(uint8_t cmd);
+static void inline Epd_SendData(uint8_t data);
+
+static void inline Epd_WaitBusy()
+{
+    do
+    {
+        // sendCommand(0x71);
+    } while (EPD_BUSY == 0);
+    delayMs(200);
+}
+
+#ifdef ASC_FONT_SUPPORT
+
+extern __code const unsigned char ASC16[4096];
+
+__code const unsigned char ASC16[4096]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7E,0x81,0xA5,0x81,0x81,0xBD,0x99,0x81,0x81,0x7E,0x00,0x00,0x00,0x00,0x00,0x00,0x7E,0xFF,0xDB,0xFF,0xFF,0xC3,0xE7,0xFF,0xFF,0x7E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x6C,0xFE,0xFE,0xFE,0xFE,0x7C,0x38,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x38,0x7C,0xFE,0x7C,0x38,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x3C,0x3C,0xE7,0xE7,0xE7,0x18,0x18,0x3C,0x00,0x00,0x00,0x00,0x00,
+0x00,0x00,0x18,0x3C,0x7E,0xFF,0xFF,0x7E,0x18,0x18,0x3C,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x3C,0x3C,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xE7,0xC3,0xC3,0xE7,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x3C,0x66,0x42,0x42,0x66,0x3C,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xC3,0x99,0xBD,0xBD,0x99,0xC3,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x1E,0x0E,0x1A,0x32,0x78,0xCC,0xCC,0xCC,0xCC,0x78,0x00,0x00,0x00,0x00,0x00,0x00,
+0x3C,0x66,0x66,0x66,0x66,0x3C,0x18,0x7E,0x18,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0x33,0x3F,0x30,0x30,0x30,0x30,0x70,0xF0,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0x63,0x7F,0x63,0x63,0x63,0x63,0x67,0xE7,0xE6,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x18,0xDB,0x3C,0xE7,0x3C,0xDB,0x18,0x18,0x00,0x00,0x00,0x00,0x00,0x80,0xC0,0xE0,0xF0,0xF8,0xFE,0xF8,0xF0,0xE0,0xC0,0x80,0x00,0x00,0x00,0x00,0x00,0x02,0x06,0x0E,0x1E,0x3E,0xFE,0x3E,0x1E,0x0E,0x06,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x18,
+0x3C,0x7E,0x18,0x18,0x18,0x7E,0x3C,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x66,0x66,0x66,0x66,0x66,0x66,0x66,0x00,0x66,0x66,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0xDB,0xDB,0xDB,0x7B,0x1B,0x1B,0x1B,0x1B,0x1B,0x00,0x00,0x00,0x00,0x00,0x7C,0xC6,0x60,0x38,0x6C,0xC6,0xC6,0x6C,0x38,0x0C,0xC6,0x7C,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0xFE,0xFE,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x3C,0x7E,0x18,0x18,0x18,0x7E,0x3C,0x18,0x7E,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x3C,
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+
+
+__xdata char g_epdTextScrBuf[18][51] = {
+"Designed to be the perfect enabler for NFC in home",
+"-automation and consumer applications, this featur",
+"e-packed, second-generation connected NFC tag is t",
+"he fastest, least expensive way to add tap-and-go ",
+"connectivity to just about any electronic device. ",
+"NXP NTAG I2C plus is a family of connected NFC tag",
+"s that combine a passive NFC interface with a cont",
+"act I2C interface. As the second generation of NXP",
+"'s industry leading connected-tag technology, thes",
+"e devices maintain full backward compatibility wit",
+"h firstgeneration NTAG I2C products, while adding ",
+"new, advanced features for password protection, fu",
+"ll memory-access configuration from both interface",
+"s, and an originality signature for protection aga",
+"inst cloning.                                     ",
+"ABCDEFGHIJKLMNOPQRSTUVWXYZ12345678901234567890+-*/", // 0
+"BCDEFGHIJKLMNOPQRSTUVWXYZ12345678901234567890+-*/A", // 1
+"CDEFGHIJKLMNOPQRSTUVWXYZ12345678901234567890+-*/AB", // 2
+
+    // "ABCDEFGHIJKLMNOPQRSTUVWXYZ12345678901234567890+-*/", // 0
+    // "BCDEFGHIJKLMNOPQRSTUVWXYZ12345678901234567890+-*/A", // 1
+    // "CDEFGHIJKLMNOPQRSTUVWXYZ12345678901234567890+-*/AB", // 2
+    // "DEFGHIJKLMNOPQRSTUVWXYZ12345678901234567890+-*/ABC", // 3
+    // "EFGHIJKLMNOPQRSTUVWXYZ12345678901234567890+-*/ABCD", // 4
+    // "FGHIJKLMNOPQRSTUVWXYZ12345678901234567890+-*/ABCDE", // 5
+    // "GHIJKLMNOPQRSTUVWXYZ12345678901234567890+-*/ABCDEF", // 6
+    // "HIJKLMNOPQRSTUVWXYZ12345678901234567890+-*/ABCDEFG", // 7
+    // "IJKLMNOPQRSTUVWXYZ12345678901234567890+-*/ABCDEFGH", // 8
+    // "JKLMNOPQRSTUVWXYZ12345678901234567890+-*/ABCDEFGHI", // 9
+    // "KLMNOPQRSTUVWXYZ12345678901234567890+-*/ABCDEFGHIJ", // 10
+    // "LMNOPQRSTUVWXYZ12345678901234567890+-*/ABCDEFGHIJK", // 11
+    // "MNOPQRSTUVWXYZ12345678901234567890+-*/ABCDEFGHIJKL", // 12
+    // "NOPQRSTUVWXYZ12345678901234567890+-*/ABCDEFGHIJKLM", // 13
+    // "OPQRSTUVWXYZ12345678901234567890+-*/ABCDEFGHIJKLMN", // 14
+    // "PQRSTUVWXYZ12345678901234567890+-*/ABCDEFGHIJKLMNO", // 15
+    // "QRSTUVWXYZ12345678901234567890+-*/ABCDEFGHIJKLMNOP", // 16
+    // "RSTUVWXYZ12345678901234567890+-*/ABCDEFGHIJKLMNOPQ", // 17
+};
+
+uint8_t Epd_TextScrByte(uint16_t row, uint16_t col)
+{
+    // 第row行像素的第几个字节
+    // 共18行字符 每个字符高16像素 每行50个字符
+    uint8_t charRow = row >> 4u; // 第r行
+    uint8_t pixRow = row & 0xFu; // 0~15 该行字符内第几行
+    uint8_t charCol = col >> 3u; // 第c列
+    if (charRow >= 18 || charCol >= 50) {
+        return 0;
+    }
+    uint8_t charAt = (uint8_t)g_epdTextScrBuf[charRow][charCol];
+    const uint8_t *pCode = &ASC16[(uint16_t)charAt << 4];
+    uint8_t ret = 0;
+    for(uint8_t j = 0; j < 8; j++){
+        if((pCode[pixRow] >> j) & 0x01){
+            ret |= 1 << j;
+        }
+    }
+    return ret;
+}
+void Epd_DisplayTextScreen(void)
+{
+    Epd_SendCommand(0x10); //Transfer old data
+    for (uint16_t r = 0; r < VRES; r++) {
+        for (uint16_t c = 0; c < HRES; c += 8) {
+            uint8_t v = Epd_TextScrByte(r, c);
+            if (c > 150) {
+                v ^= 0xFF;
+            } else {
+                
+            }
+            Epd_SendData(v);
+        }
+    }
+    Epd_SendCommand(0x13); //Transfer new data
+    for (uint16_t r = 0; r < VRES; r++) {
+        for (uint16_t c = 0; c < HRES; c += 8) {
+            uint8_t v = Epd_TextScrByte(r, c);
+            if (r > 200) {
+                v ^= 0xFF;
+            } else {
+
+            }
+            Epd_SendData(v);
+        }
+    }
+}
+#endif // ASC_FONT_SUPPORT
+
+void Epd_ClearDisplay(uint8_t black, uint8_t red)
+{
+    Epd_SendCommand(0x10); //Transfer old data
+    for (uint16_t i = 0; i < BUFFER_SIZE; i++) {
+        Epd_SendData(black);
+    }
+
+    Epd_SendCommand(0x13); //Transfer new data
+    for (uint16_t i = 0; i < BUFFER_SIZE; i++) {
+        Epd_SendData(red);
+    }
+}
+
+void Epd_TestPattern_ChessBoard(uint8_t pat)
+{
+    if (pat > 8) {
+        return;
+    }
+    {
+        uint8_t v = 0;
+        for (uint8_t i = 0; i < pat; ++i) {
+            v |= 1 << i;
+        }
+        Epd_SendCommand(0x10); //Transfer old data
+        for (uint16_t row = 0; row < 300; row += pat) {
+            for (uint8_t srow = 0; (srow < pat) && (srow + row < 300); ++srow) {
+                for (uint16_t i = 0; i < 400 / 8; i++) {
+                    Epd_SendData(v);
+                }
+            }
+            v ^= 0xFF;
+        }
+    }
+    {
+        uint8_t v = 0;
+        for (uint8_t i = 0; i < pat; ++i) {
+            v |= 1 << i;
+        }
+        Epd_SendCommand(0x13); //Transfer old data
+        for (uint16_t row = 0; row < 300; row += pat) {
+            for (uint8_t srow = 0; (srow < pat) && (srow + row < 300); ++srow) {
+                for (uint16_t i = 0; i < 400 / 8; i++) {
+                    Epd_SendData(v);
+                }
+            }
+            v ^= 0xFF;
+        }
+    }
+}
+
+void Epd_BeginBlack(void)
+{
+    Epd_SendCommand(0x10);
+}
+void Epd_BeginRed(void)
+{
+    Epd_SendCommand(0x13);
+}
+void Epd_LoadBatch(const uint8_t *buf)
+{
+    for (uint8_t i = 0; i < 60; ++i) {
+        Epd_SendData(buf[i]);
+    }
+}
+
+void Epd_Refresh(void)
+{
+    Epd_SendCommand(0x12);
+    delayMs(100);
+    Epd_WaitBusy();
+}
+
+static void Epd_Sleep(void)
+{
+    Epd_SendCommand(0x02); //power off
+    Epd_WaitBusy();
+    delayMs(1000);
+    Epd_SendCommand(0x07);  //deep sleep
+    Epd_SendData(0xA5);
+}
+
+void Epd_Init(void)
+{
+    PERCFG &= ~0x01;       // USART0 alternative 1 location
+    U0CSR = 0;             // SPI mode/master/clear flags
+    U0GCR = (1 << 5) | 17; // SCK-low idle, DATA-1st clock edge, MSB first + baud E
+    U0BAUD = 0;            // baud M
+    U0CSR |= BV(6);        // enable SPI
+
+    P0SEL |= BV(3) | BV(5);                        // MISO/MOSI/CLK peripheral functions
+    P0DIR |= BV(3) | BV(5) | BV(EPD_B_PWR) | BV(EPD_B_CS); // MOSI/CLK, PWR/CS output
+    P1DIR |= BV(EPD_B_DC);
+    P1DIR &= ~BV(EPD_B_BUSY);
+    P2DIR |= BV(EPD_B_RESET);
+
+    PWR_ON;
+    delayMs(1000);
+    RESET_ON;
+    delayMs(10);
+    RESET_OFF;
+    delayMs(10);
+
+    Epd_SendCommand(6);         //boost soft start
+    Epd_SendData(0x17);   //A
+    Epd_SendData(0x17);   //B
+    Epd_SendData(0x17);   //C
+
+    Epd_SendCommand(4);//Power on
+    Epd_WaitBusy();
+
+    Epd_SendCommand(0); //panel setting
+    Epd_SendData(0x0f); //LUT from OTP£¬400x300
+    Epd_SendData(0x0d); //VCOM to 0V fast  
+
+    // sendCommand(0x61);
+    // sendData(HRES);
+    // sendData(VRES >> 8);
+    // sendData(VRES);
+
+    Epd_SendCommand(0x50);
+    Epd_SendData(0x77);
+
+    // delay(20e3);
+    // epd_image(gImage_black2, gImage_red2);
+    // epd_refresh();
+}
+
+void Epd_Deinit(void)
+{
+    Epd_Sleep();
+
+    PWR_OFF;
+}
+
+
+static void inline Epd_SendData(uint8_t data)
+{
+    EPD_CS = 0;
+    U0DBUF = data;
+    while (U0CSR & 0x01)
+    {
+    }
+    EPD_CS = 1;
+}
+
+static void inline Epd_SendCommand(uint8_t cmd)
+{
+    EPD_DC = 0;
+    Epd_SendData(cmd);
+    EPD_DC = 1;
+}
diff --git a/src/display/epd.h b/src/display/epd.h
new file mode 100644
index 0000000..02365a0
--- /dev/null
+++ b/src/display/epd.h
@@ -0,0 +1,32 @@
+#ifndef _EPD_H_
+#define _EPD_H_
+
+#include <stdint.h>
+
+#define EPD_B_PWR 0   //P0_0
+#define EPD_B_CS 1    //P0_1
+#define EPD_B_DC 2    //P1_2 - low command, high data
+#define EPD_B_BUSY 3  //P1_3 - low busy
+#define EPD_B_RESET 0 //P2_0 - low reset
+
+#define EPD_PWR P0_0
+#define EPD_CS P0_1
+#define EPD_DC P1_2
+#define EPD_BUSY P1_3
+#define EPD_RESET P2_0
+
+
+void Epd_Init(void);
+void Epd_ClearDisplay(uint8_t black, uint8_t red);
+void Epd_Refresh(void);
+void Epd_Deinit(void);
+
+
+void Epd_TestPattern_ChessBoard(uint8_t pat);
+
+void Epd_BeginBlack(void);
+void Epd_BeginRed(void);
+void Epd_LoadBatch(const uint8_t *buf);
+
+
+#endif
\ No newline at end of file
diff --git a/src/flash/flash.c b/src/flash/flash.c
new file mode 100644
index 0000000..876ad50
--- /dev/null
+++ b/src/flash/flash.c
@@ -0,0 +1,106 @@
+
+
+#include "flash.h"
+#include <cc2510fx.h>
+#include <stdbool.h>
+
+
+
+
+inline void Flash_Select(bool select)
+{
+    FLASH_CS = !select;
+}
+
+static uint8_t Flash_ExchangeData(uint8_t data)
+{
+    U1DBUF = data;
+    while (U1CSR & 0x01)
+    {
+        *(__xdata volatile uint8_t*)0xFE00 = U1CSR;
+    }
+    return U1DBUF;
+}
+
+bool Flash_CheckId(void)
+{
+    Flash_Select(true);
+    Flash_ExchangeData(0x90u);
+    Flash_ExchangeData(0x00u); // 3 Byte dummy
+    Flash_ExchangeData(0x00u);
+    Flash_ExchangeData(0x00u);
+    uint8_t mid = Flash_ExchangeData(0xFFu); // 0xEF
+    uint8_t did = Flash_ExchangeData(0xFFu); // 0x11
+    Flash_Select(false);
+    return (mid == 0xEFu) && (did == 0x11u);
+}
+
+void Flash_EnterPowerDown(void)
+{
+    Flash_Select(true);
+    Flash_ExchangeData(0xB9u);
+    Flash_Select(false);
+}
+
+/**
+ * @brief 释放复位并判断ChipId
+ * 
+ * @return true 
+ * @return false 
+ */
+bool Flash_ReleasePowerDown(void)
+{
+    Flash_Select(true);
+    Flash_ExchangeData(0xABu);
+    Flash_ExchangeData(0x00u); // 3 Byte dummy
+    Flash_ExchangeData(0x00u);
+    Flash_ExchangeData(0x00u);
+    uint8_t did = Flash_ExchangeData(0xFFu); 
+    Flash_Select(false);
+    return (did == 0x11u);
+}
+
+/**
+ * @brief 
+ * 
+ * @param addr 
+ * @param len 只有16位宽，内存受限
+ */
+void Flash_FastRead(uint32_t addr, uint8_t *buf, uint16_t len)
+{
+    Flash_Select(true);
+    Flash_ExchangeData(0x0Bu);
+    Flash_ExchangeData((addr & 0xFF0000u) >> 16u);
+    Flash_ExchangeData((addr & 0xFF00u) >> 8u);
+    Flash_ExchangeData((addr & 0xFFu) >> 0u);
+    Flash_ExchangeData(0xFFu); // dummy
+    for (uint16_t i = 0; i < len; ++i) {
+        buf[i] = Flash_ExchangeData(i & 0xFFu);
+    }
+    Flash_Select(false);
+}
+
+void NfcFlash_IoInit(void)
+{
+    P1DIR |= BV(FLASH_B_CS);
+    FLASH_CS = 1; // Flas CS
+    NFCFLASH_PWR = 0;
+    P1DIR |= BV(NFCFLASH_B_PWR) // NFCPWR output
+        | BV(FLASH_B_SCK) 
+        | BV(FLASH_B_MOSI) 
+        | BV(FLASH_B_CS); 
+    P1DIR &= ~(BV(FLASH_B_MISO));
+    PERCFG |= 0x02;       // USART1 alternative 2 location SPI
+    U1CSR = 0;             // SPI mode/master/clear flags
+    P1SEL |= BV(FLASH_B_SCK) | BV(FLASH_B_MOSI) | BV(FLASH_B_MISO);                        // MISO/MOSI/CLK peripheral functions // SS仅当从机使用时才配置为外设
+    U1BAUD = 0;            // baud M
+    U1GCR = BV(5) | 17; // SCK-low idle, DATA-1st clock edge, MSB first
+
+    P1DIR &= ~BV(NFC_B_FD);
+}
+
+void NfcFlash_Pwr(bool enable)
+{
+    P1_0 = enable ? 1 : 0;
+}
+
diff --git a/src/flash/flash.h b/src/flash/flash.h
new file mode 100644
index 0000000..392c0c5
--- /dev/null
+++ b/src/flash/flash.h
@@ -0,0 +1,34 @@
+
+#ifndef FLASH_H
+#define FLASH_H
+#include <stdbool.h>
+#include <stdint.h>
+#include <cc2510fx.h>
+#include "util.h"
+
+void NfcFlash_IoInit(void);
+void NfcFlash_Pwr(bool enable);
+
+bool Flash_CheckId(void);
+bool Flash_ReleasePowerDown(void);
+void Flash_FastRead(uint32_t addr, uint8_t *buf, uint16_t len);
+
+
+#define NFC_FD P1_1
+#define NFCFLASH_PWR P1_0
+#define FLASH_CS P1_4
+#define FLASH_MOSI P1_6
+#define FLASH_MISO P1_7
+#define FLASH_SCK P1_5
+
+#define NFC_B_FD 1
+#define NFCFLASH_B_PWR 0
+#define FLASH_B_CS 4
+#define FLASH_B_MOSI 6
+#define FLASH_B_MISO 7
+#define FLASH_B_SCK 5
+
+#define NFC_FD_ON() (!NFC_FD)
+#define NFC_FD_OFF() (!!NFC_FD)
+
+#endif // FLASH_H
diff --git a/src/hal_clock.c b/src/hal_clock.c
new file mode 100644
index 0000000..839630b
--- /dev/null
+++ b/src/hal_clock.c
@@ -0,0 +1,26 @@
+
+
+#include "hal_clock.h"
+#include "util.h"
+
+void halPowerClkMgmtSetMainClkSrc(uint8_t source)
+{
+    // source can have the following values:
+    // CRYSTAL 0x00  /*  High speed Crystal Oscillator Control */
+    // RC      0x01  /*  Low power RC Oscillator */
+    
+    SLEEP &= ~OSC_PD_BIT;
+
+    while (!HIGH_FREQUENCY_RC_OSC_STABLE);
+    CLKCON = 0xC9u;
+    CLKCON = 0x49u;
+    
+
+    while (!XOSC_STABLE);
+    CLKCON = 0xC9u;
+        __asm__("NOP");
+    CLKCON = 0x89u;
+    (void)source;
+}
+
+
diff --git a/src/hal_clock.h b/src/hal_clock.h
new file mode 100644
index 0000000..8076c5d
--- /dev/null
+++ b/src/hal_clock.h
@@ -0,0 +1,62 @@
+
+#ifndef HAL_CLOCK_H
+#define HAL_CLOCK_H
+
+#include <stdint.h>
+#include <cc2510fx.h>
+
+
+/* Pre defined values for source, as used in halPowerClkMgmtSetMainClkSrc() */
+#define CRYSTAL           0x00  /*  High speed Crystal Oscillator Control */
+#define RC                0x01  /*  Low power RC Oscillator */
+
+// Bit masks to check CLKCON register
+#define OSC_BIT           0x40  // bit mask used to select/check the system clock oscillator
+#define TICKSPD_BITS      0x38  // bit mask used to check the timer ticks output setting
+#define CLKSPD_BIT        0x03  // bit maks used to check the clock speed
+#define MAIN_OSC_BITS     0x7F  // bit mask used to control the system clock oscillator
+                                // e.g. ~MAIN_OSC_BITS can be used to start Crystal OSC
+
+// Bit masks to check SLEEP register
+#define XOSC_STABLE_BIT   0x40  // bit mask used to check the stability of XOSC
+#define HFRC_STB_BIT      0x20  // bit maks used to check the stability of the High-frequency RC oscillator
+#define OSC_PD_BIT        0x04  // bit maks used to power down system clock oscillators
+
+/*==== TYPES =================================================================*/
+/*==== EXPORTS ===============================================================*/
+
+/*==== MACROS=================================================================*/
+
+// Macro for checking status of the high frequency RC oscillator.
+#define HIGH_FREQUENCY_RC_OSC_STABLE (SLEEP & HFRC_STB_BIT)
+
+// Macro for getting the clock division factor
+#define CLKSPD  (CLKCON & CLKSPD_BIT)
+
+
+// Macro for getting the timer tick division factor.
+#define TICKSPD ((CLKCON & TICKSPD_BITS) >> 3)
+
+// Macro for checking status of the crystal oscillator
+#define XOSC_STABLE (SLEEP & XOSC_STABLE_BIT)
+
+/*==== FUNCTIONS =============================================================*/
+
+/******************************************************************************
+* @fn  halPowerClkMgmtSetMainClkSrc
+*
+* @brief
+* Function for setting the main clock oscillator source, turns off the
+* clock source not used changing to XOSC will take approx 150 us
+*  Settings TICKSPD equal CLKSPD
+*
+* Parameters:
+*
+* @param  UINT8 source
+*
+* @return void
+*
+******************************************************************************/
+void halPowerClkMgmtSetMainClkSrc(uint8_t source);
+
+#endif // HAL_CLOCK_H
diff --git a/src/isr.h b/src/isr.h
new file mode 100644
index 0000000..287cdae
--- /dev/null
+++ b/src/isr.h
@@ -0,0 +1,8 @@
+
+#ifndef ISR_H
+#define ISR_H
+#include <cc2510fx.h>
+
+void time_isr(void) __interrupt(WDT_VECTOR);
+
+#endif // ISR_H
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..4d2e7cb
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,390 @@
+#include "display/epd.h"
+#include "isr.h"
+#include "time/time.h"
+#include "util.h"
+
+#include "flash/flash.h"
+#include "hal_clock.h"
+#include "nfc/i2c.h"
+
+#define MANAGED_XRAM_START 0xF000
+
+void blink(void)
+{
+    LED_ON();
+    delayMs(5);
+    LED_OFF();
+}
+
+void EPD_Test(void)
+{
+
+    Epd_ClearDisplay(0, 0);
+    Epd_Refresh();
+
+    // Epd_DisplayTextScreen();
+    // Epd_Refresh();
+
+    for (int i = 0; i < 0; ++i) {
+        Epd_ClearDisplay(0x0Fu, 0xF0u);
+        Epd_Refresh();
+        //blink();
+        delayMs(5000);
+
+        Epd_ClearDisplay(0xF0u, 0x0Fu);
+        Epd_Refresh();
+        //blink();
+        delayMs(5000);
+    }
+    // FF00 红色
+    // 00FF 黑色
+    // FFFF 白色
+
+    // Epd_ClearDisplay(0xFFu, 0xFFu);
+    // Epd_Refresh();
+
+    Epd_Deinit();
+}
+
+#define XRAM_BEGIN (void *)0xF000
+#define XRAM_END (void *)0xFEFF
+
+
+__code static const unsigned char crc_table[] =
+{
+    0x00,0x31,0x62,0x53,0xc4,0xf5,0xa6,0x97,0xb9,0x88,0xdb,0xea,0x7d,0x4c,0x1f,0x2e,
+    0x43,0x72,0x21,0x10,0x87,0xb6,0xe5,0xd4,0xfa,0xcb,0x98,0xa9,0x3e,0x0f,0x5c,0x6d,
+    0x86,0xb7,0xe4,0xd5,0x42,0x73,0x20,0x11,0x3f,0x0e,0x5d,0x6c,0xfb,0xca,0x99,0xa8,
+    0xc5,0xf4,0xa7,0x96,0x01,0x30,0x63,0x52,0x7c,0x4d,0x1e,0x2f,0xb8,0x89,0xda,0xeb,
+    0x3d,0x0c,0x5f,0x6e,0xf9,0xc8,0x9b,0xaa,0x84,0xb5,0xe6,0xd7,0x40,0x71,0x22,0x13,
+    0x7e,0x4f,0x1c,0x2d,0xba,0x8b,0xd8,0xe9,0xc7,0xf6,0xa5,0x94,0x03,0x32,0x61,0x50,
+    0xbb,0x8a,0xd9,0xe8,0x7f,0x4e,0x1d,0x2c,0x02,0x33,0x60,0x51,0xc6,0xf7,0xa4,0x95,
+    0xf8,0xc9,0x9a,0xab,0x3c,0x0d,0x5e,0x6f,0x41,0x70,0x23,0x12,0x85,0xb4,0xe7,0xd6,
+    0x7a,0x4b,0x18,0x29,0xbe,0x8f,0xdc,0xed,0xc3,0xf2,0xa1,0x90,0x07,0x36,0x65,0x54,
+    0x39,0x08,0x5b,0x6a,0xfd,0xcc,0x9f,0xae,0x80,0xb1,0xe2,0xd3,0x44,0x75,0x26,0x17,
+    0xfc,0xcd,0x9e,0xaf,0x38,0x09,0x5a,0x6b,0x45,0x74,0x27,0x16,0x81,0xb0,0xe3,0xd2,
+    0xbf,0x8e,0xdd,0xec,0x7b,0x4a,0x19,0x28,0x06,0x37,0x64,0x55,0xc2,0xf3,0xa0,0x91,
+    0x47,0x76,0x25,0x14,0x83,0xb2,0xe1,0xd0,0xfe,0xcf,0x9c,0xad,0x3a,0x0b,0x58,0x69,
+    0x04,0x35,0x66,0x57,0xc0,0xf1,0xa2,0x93,0xbd,0x8c,0xdf,0xee,0x79,0x48,0x1b,0x2a,
+    0xc1,0xf0,0xa3,0x92,0x05,0x34,0x67,0x56,0x78,0x49,0x1a,0x2b,0xbc,0x8d,0xde,0xef,
+    0x82,0xb3,0xe0,0xd1,0x46,0x77,0x24,0x15,0x3b,0x0a,0x59,0x68,0xff,0xce,0x9d,0xac
+};
+
+uint8_t crc8(uint8_t *ptr, uint8_t len)
+{
+    uint8_t  crc = 0x00;
+    while (len--) {
+        crc = crc_table[crc ^ *ptr++];
+    }
+    return (crc);
+}
+
+// void WaitDebugStub(void)
+// {
+//     P1_0 = 0;
+//     for (volatile __xdata uint8_t *i = (volatile __xdata uint8_t *)XRAM_BEGIN; i <= (volatile __xdata uint8_t *)XRAM_END; ++i) {
+//         *i = 0xA5;
+//     }
+//     /*
+//     for (volatile __xdata uint8_t *i = 0xFF20; i <= 0xFF40; ++i) {
+//         *i = 0xA5;
+//     }
+//     */
+//     while (1) {
+//         __asm__(".db 0xA5;");
+//     }
+// }
+
+enum {
+    FSM_Init,
+    FSM_WAIT_RF,        // 空闲状态，等待RF中断
+    FSM_SETUP_RF,       // RF在位 配置NFC芯片透传
+    FSM_HANDSHAKE_A,    // 等待NFC读数据
+    FSM_HANDSHAKE_B,    // 回读
+    FSM_I2N_A,          // I2C -> NFC
+    FSM_I2N_B,          // I2C -> NFC
+    FSM_N2I_A,          // I2C -> NFC
+    FSM_N2I_B,          // I2C -> NFC
+    FSM_RF_LOST,        // 重置各状态并切换回空闲
+} g_NfcFsmState;
+#define StateTransit(x) g_NfcFsmState = (x)
+#define StateLostGuard(sessionReg) { \
+        if ((NFC_SESSION_NS_REG_RF_FIELD_PRESENT & sessionReg) == 0) { \
+            StateTransit(FSM_RF_LOST); \
+            break; \
+        } \
+    }
+
+#define SRAM_I2C_BLK_0 0xF8u
+#define SRAM_I2C_BLK_1 0xF9u
+#define SRAM_I2C_BLK_2 0xFAu
+#define SRAM_I2C_BLK_3 0xFBu
+
+
+#define DebugLog(id) do { \
+        I2C_start(); \
+        I2C_write(id); \
+        I2C_write((uint8_t)g_NfcFsmState); \
+        I2C_write((uint8_t)sessionReg); \
+        I2C_write((uint8_t)(receivedSeg >> 8)); \
+        I2C_write((uint8_t)receivedSeg); \
+        I2C_write((uint8_t)NFC_FD); \
+        I2C_stop(); \
+    } while (0)
+
+#define NFC_GUARD_BRK(x) if (!(x)) {break;}
+// struct {
+//     uint8_t raw;
+//     // NfcMemoryBlk blkBuf[4];
+// } 
+
+typedef union {
+    uint8_t buf[64];
+    struct {
+        uint8_t pld[60];
+        uint8_t cmd; // NFC:cmd I2C:ACK
+        uint8_t seq;
+        uint8_t _;
+        uint8_t crc8;
+    } data;
+    struct {
+        uint8_t pld[52];
+        uint8_t challenge[4];
+        uint8_t state[4];
+        uint8_t cmd;
+        uint8_t seq;
+        uint8_t _;
+        uint8_t crc8;
+    } hs_i2n;
+    struct {
+        uint8_t pld[52];
+        uint8_t response[4];
+        uint8_t cmdPld[4];
+        uint8_t ack;
+        uint8_t seq;
+        uint8_t _;
+        uint8_t crc8;
+    } hs_n2i;
+    struct {
+        uint8_t blk0[16];
+        uint8_t blk1[16];
+        uint8_t blk2[16];
+        uint8_t blk3[16];
+    };
+} NfcBuf;
+NfcBuf g_nfcBuf;
+
+#define NFC_CMD_NACK 'N'
+#define NFC_CMD_ACK  'A'
+
+#define nfcBuf g_nfcBuf.buf
+static uint8_t sessionReg = 0;
+static uint16_t receivedSeg = 0;
+
+void ClearMemBlk(NfcMemoryBlk blk)
+{
+    for (uint8_t i = 0; i < sizeof(blk); ++i) {
+        blk[i] = 0;
+    }
+}
+
+void WriteMemBlk(uint8_t blk[16], uint8_t a, uint8_t b, uint8_t c, uint8_t d)
+{
+    (void)b;
+    blk[12] = a;
+    blk[14] = c;
+    blk[15] = d;
+}
+
+extern void inline Epd_SendData(uint8_t data);
+void WriteMemBlkToEpd(const uint8_t blk[16], uint8_t cnt)
+{
+    for (uint8_t i = 0; i < cnt; ++i) {
+        EPD_CS = 0;
+        U0DBUF = blk[i];
+        while (U0CSR & 0x01)
+        {
+        }
+        EPD_CS = 1;
+    }
+}
+
+#define DO_EPD_REFRESH
+
+void Nfc_Fsm(void)
+{
+    static uint8_t ackVal = 0;
+    //DebugLog(0x10);
+    switch (g_NfcFsmState) {
+    case FSM_Init: {
+        StateTransit(FSM_WAIT_RF);
+        break;
+    }
+    case FSM_WAIT_RF: {
+        if (Nfc_IsFieldActive()) { // 改成中断管脚
+            StateTransit(FSM_SETUP_RF);
+        }
+        break;
+    }
+    case FSM_SETUP_RF: { // 初始化通信
+        // NfcFlash_Pwr(true);
+        NFC_GUARD_BRK(Nfc_SetFdPin(0x3u, 0x3u));
+        NFC_GUARD_BRK(Nfc_DirSet(false));
+        NFC_GUARD_BRK(Nfc_ConfigurePassThru(true));
+        // 写入握手数据
+        ClearMemBlk(nfcBuf);
+        // WriteMemBlk(nfcBuf, 'H', 'S', 0xDE, 0xAD);
+        g_nfcBuf.hs_i2n.cmd = NFC_CMD_ACK;
+
+        
+        NFC_GUARD_BRK(Nfc_MemWriteBlk(SRAM_I2C_BLK_3, nfcBuf));
+        StateTransit(FSM_HANDSHAKE_A);
+        break;
+    }
+    case FSM_HANDSHAKE_A: { // 03 等待NFC读取握手数据
+        NFC_GUARD_BRK(Nfc_ReadReg(NFC_SESSION_REG_MEMA, NFC_SESSION_NS_REG_REGA , &sessionReg));
+        StateLostGuard(sessionReg);
+        if ((NFC_FD == 0) || ((sessionReg & NFC_SESSION_NS_REG_SRAM_RF_READY) == 0))
+        {
+            // NFC读取握手数据
+            NFC_GUARD_BRK(Nfc_DirSet(true)); // 等待接收握手数据
+            StateTransit(FSM_HANDSHAKE_B);
+        }
+        break;
+    }
+    case FSM_HANDSHAKE_B: { // 04 等待NFC写入握手数据
+        NFC_GUARD_BRK(Nfc_ReadReg(NFC_SESSION_REG_MEMA, NFC_SESSION_NS_REG_REGA , &sessionReg));
+        StateLostGuard(sessionReg);
+        if ((NFC_FD == 0) || ((sessionReg & NFC_SESSION_NS_REG_SRAM_I2C_READY) != 0))
+        {
+            // NFC已完成握手数据写入
+            // todo 此处读取握手数据并做校验
+            receivedSeg = 0;
+#ifdef DO_EPD_REFRESH
+            Epd_BeginBlack(); // 准备接收黑色图像
+#endif // DO_EPD_REFRESH
+            ackVal = true;
+            StateTransit(FSM_I2N_A);
+        }
+        break;
+    }
+    case FSM_I2N_A: { // 05
+        // 发送ACK
+        NFC_GUARD_BRK(Nfc_DirSet(false));
+        if (ackVal) {
+            g_nfcBuf.data.cmd = NFC_CMD_ACK;
+        } else {
+            g_nfcBuf.data.cmd = NFC_CMD_NACK;
+        }
+        g_nfcBuf.data._ = (uint8_t)receivedSeg;
+        
+        NFC_GUARD_BRK(Nfc_MemWriteBlk(SRAM_I2C_BLK_3, g_nfcBuf.blk3));
+        StateTransit(FSM_I2N_B);
+        break;
+    }
+    case FSM_I2N_B: { // 06
+        // 等待NFC读取
+        NFC_GUARD_BRK(Nfc_ReadReg(NFC_SESSION_REG_MEMA, NFC_SESSION_NS_REG_REGA , &sessionReg));
+        StateLostGuard(sessionReg);
+        if ((NFC_FD == 0) || ((sessionReg & NFC_SESSION_NS_REG_SRAM_RF_READY) == 0)) {
+            // NFC已读取ACK
+            NFC_GUARD_BRK(Nfc_DirSet(true)); // 等待接收图像数据
+            StateTransit(FSM_N2I_A);
+        }
+        break;
+    }
+    case FSM_N2I_A: { // 07 等待NFC写入图像
+        NFC_GUARD_BRK(Nfc_ReadReg(NFC_SESSION_REG_MEMA, NFC_SESSION_NS_REG_REGA , &sessionReg));
+        StateLostGuard(sessionReg);
+
+
+            if (receivedSeg == 250) {
+#ifdef DO_EPD_REFRESH
+                Epd_BeginRed(); // 准备接收图像
+#endif // DO_EPD_REFRESH
+            } else if (receivedSeg == 500) {
+#ifdef DO_EPD_REFRESH
+                Epd_Refresh();
+#endif // DO_EPD_REFRESH
+                StateTransit(FSM_RF_LOST);
+                break;
+            }
+
+        if ((NFC_FD == 0) || ((sessionReg & NFC_SESSION_NS_REG_SRAM_I2C_READY) != 0)) {
+            // NFC已完成图像数据写入
+            // 读取数据
+            NFC_GUARD_BRK(Nfc_I2cLock(true));
+            NFC_GUARD_BRK(Nfc_MemReadBlk(SRAM_I2C_BLK_0, g_nfcBuf.blk0));
+            NFC_GUARD_BRK(Nfc_MemReadBlk(SRAM_I2C_BLK_1, g_nfcBuf.blk1));
+            NFC_GUARD_BRK(Nfc_MemReadBlk(SRAM_I2C_BLK_2, g_nfcBuf.blk2));
+            NFC_GUARD_BRK(Nfc_MemReadBlk(SRAM_I2C_BLK_3, g_nfcBuf.blk3));
+            uint8_t crc = crc8(g_nfcBuf.buf, 63);
+            if (crc == g_nfcBuf.data.crc8) {
+                blink();
+                WriteMemBlkToEpd(g_nfcBuf.blk0, 16);
+                WriteMemBlkToEpd(g_nfcBuf.blk1, 16);
+                WriteMemBlkToEpd(g_nfcBuf.blk2, 16);
+                WriteMemBlkToEpd(g_nfcBuf.blk3, 12);
+                ackVal = true;
+                receivedSeg++;
+            } else {
+                ackVal = false;
+            }
+            NFC_GUARD_BRK(Nfc_I2cLock(false));
+            g_nfcBuf.data.crc8 = ~crc;
+    //DebugLog(0x2A);
+            
+            StateTransit(FSM_I2N_A);
+    //DebugLog(0x3A);
+        }
+        break;
+    }
+    case FSM_N2I_B: {
+        StateTransit(FSM_WAIT_RF);
+        break;
+    }
+    case FSM_RF_LOST: {
+        Nfc_ConfigurePassThru(false);
+        NFC_GUARD_BRK(Nfc_DirSet(false));
+        NFC_GUARD_BRK(Nfc_SetFdPin(0x0u, 0x0u));
+        StateTransit(FSM_WAIT_RF);
+        break;
+    }
+    }
+    //DebugLog(0x20);
+}
+
+void main(void)
+{
+    halPowerClkMgmtSetMainClkSrc(0);
+    HAL_ENABLE_INTERRUPTS();
+    time_init();
+    LED_INIT();
+    NfcFlash_IoInit();
+    // NfcFlash_Pwr(false);
+
+    // WaitDebugStub();
+
+    Epd_Init();
+    //Epd_ClearDisplay(0xFF, 0xFF);
+    //Epd_Refresh();
+
+    NfcFlash_Pwr(true);
+
+
+    delayMs(50);
+    Flash_ReleasePowerDown();
+    Flash_CheckId();
+
+    
+    I2C_init();
+    //DebugLog(0x70);
+
+    while (1) {
+        Nfc_Fsm();
+        //__asm__(".db 0xA5;");
+        //__asm__(".db 0x00;");
+        continue;
+        
+    }
+}
\ No newline at end of file
diff --git a/src/nfc/i2c.c b/src/nfc/i2c.c
new file mode 100644
index 0000000..15115d4
--- /dev/null
+++ b/src/nfc/i2c.c
@@ -0,0 +1,311 @@
+
+#include "i2c.h"
+#include "time/time.h"
+
+void I2C_HalfClk(void)
+{
+    __asm__("NOP");
+    
+    //__asm__("NOP");
+    //__asm__("NOP");
+    //__asm__("NOP");
+
+    //__asm__("NOP");    
+    // __asm__("NOP");
+    // __asm__("NOP");
+    // __asm__("NOP");
+}
+
+void I2C_init(void)
+{
+    P0DIR |= BV(4) | BV(6);
+    SDA = 1;
+    SCL = 1;
+}
+
+void I2C_start(void)
+{
+    I2C_HalfClk();
+    SDA_OUT();
+    SDA = 0;
+    I2C_HalfClk();
+    SCL = 0;
+    I2C_HalfClk();
+}
+
+void I2C_stop(void)
+{
+    SDA_OUT();
+    SDA = 0;
+    SCL = 1;
+    I2C_HalfClk();
+    SDA = 1;
+    I2C_HalfClk();
+}
+
+void I2C_ack(void)
+{
+    SCL = 0;
+    SDA_OUT();
+    SDA = 0;
+    I2C_HalfClk();
+    SCL = 1;
+    I2C_HalfClk();
+    SCL = 0;
+}
+
+void I2C_nack(void)
+{
+    SCL = 0;
+    SDA_OUT();
+    SDA = 1;
+    I2C_HalfClk();
+    SCL = 1;
+    I2C_HalfClk();
+    SCL = 0;
+}
+
+/**
+ * @brief 
+ * 
+ * @param Data 
+ * @return uint8_t 0=ACK 1=NACK
+ */
+uint8_t I2C_write(unsigned char Data)
+{
+    for (uint8_t i = 0; i < 8; i++) {
+        if ((Data & 0x80) == 0) {
+            SDA = 0;
+        } else {
+            SDA = 1;
+        }
+        __asm__("NOP");
+        SCL = 1;
+        __asm__("NOP");
+        __asm__("NOP");
+        __asm__("NOP");
+        __asm__("NOP");
+        __asm__("NOP");
+        __asm__("NOP");
+        // I2C_HalfClk();
+        SCL = 0;
+        Data <<= 1;
+    }
+    SDA = 0;
+    SDA_IN();
+        __asm__("NOP");
+        __asm__("NOP");
+    SCL = 1;
+        __asm__("NOP");
+        __asm__("NOP");
+    volatile uint8_t ack = SDA;
+    SCL = 0;
+    __asm__("NOP");
+    SDA_OUT();
+    return ack;
+}
+
+uint8_t I2C_read(void)
+{
+    SDA_IN();
+    unsigned char i;
+    volatile uint8_t Data = 0;
+    
+    for (i = 0; i < 8; i++) {
+        SCL = 0;
+        __asm__("NOP");
+        __asm__("NOP");
+        __asm__("NOP");
+        __asm__("NOP");
+        __asm__("NOP");
+        __asm__("NOP");
+        SCL = 1;
+        __asm__("NOP");
+        if (SDA) {
+            Data |= 1;
+        }
+        if (i < 7) {
+            Data <<= 1;
+        }
+    }
+	__asm__("NOP");
+	__asm__("NOP");
+    SCL = 0;
+    I2C_HalfClk();
+    return Data;
+}
+
+// bool Nfc_MemRead(uint8_t mema, uint8_t *buf)
+// {
+//     bool ret = true;
+//     I2C_start();
+//     ret &= !I2C_write(NFC_W_ADDR);
+//     ret &= !I2C_write(mema); // MEMA
+//     I2C_stop();
+//     delayMs(1);
+//     I2C_start();
+//     ret &= !I2C_write(NFC_R_ADDR);
+//     for (uint8_t i = 0; i < 16; ++i) {
+//         buf[i] = I2C_read();
+//         I2C_ack();
+//     }
+//     I2C_stop();
+//     return ret;
+// }
+// bool Nfc_MemWrite(uint8_t mema, uint8_t *buf)
+// {
+//     bool ret = true;
+//     I2C_start();
+//     ret &= !I2C_write(NFC_W_ADDR);
+//     ret &= !I2C_write(mema); // MEMA
+//     for (uint8_t i = 0; i < 16; ++i) {
+//         ret &= !I2C_write(buf[i]);
+//     }
+//     I2C_stop();
+//     delayMs(5);
+//     return ret;
+// }
+
+bool Nfc_MemReadBlk(uint8_t mema, NfcMemoryBlk buf)
+{
+    bool ret = true;
+    I2C_start();
+    ret &= !I2C_write(NFC_W_ADDR);
+    ret &= !I2C_write(mema); // MEMA
+    I2C_stop();
+    // delayMs(1); // SRAM无需延时
+    I2C_start();
+    ret &= !I2C_write(NFC_R_ADDR);
+    for (uint8_t i = 0; i < 16; ++i) {
+        buf[i] = I2C_read();
+        I2C_ack();
+    }
+    I2C_stop();
+    return ret;
+}
+bool Nfc_MemWriteBlk(uint8_t mema, const NfcMemoryBlk buf)
+{
+    bool ret = true;
+    I2C_start();
+    ret &= !I2C_write(NFC_W_ADDR);
+    ret &= !I2C_write(mema); // MEMA
+    for (uint8_t i = 0; i < 16; ++i) {
+        ret &= !I2C_write(buf[i]);
+    }
+    I2C_stop();
+    // delayMs(5); // 写RAM无需延时
+    return ret;
+}
+
+/**
+ * @brief 
+ * 
+ * @param mema 
+ * @param rega 
+ * @param regdat 
+ * @return true ACK
+ * @return false NACK
+ */
+bool Nfc_ReadReg(uint8_t mema, uint8_t rega, uint8_t *regdat)
+{
+    uint8_t ret = false;
+    I2C_start();
+    ret |= I2C_write(NFC_W_ADDR);
+    ret |= I2C_write(mema); // MEMA
+    ret |= I2C_write(rega); // REGA
+    I2C_stop();
+    // if (ret) {
+    //     return false;
+    // }
+    I2C_start();
+    ret |= I2C_write(NFC_R_ADDR);
+    *regdat = I2C_read();
+    I2C_ack();
+    I2C_stop();
+    return !ret;
+}
+bool Nfc_WriteReg(uint8_t mema, uint8_t rega, uint8_t mask, uint8_t regdat)
+{
+    bool ret = true;
+    I2C_start();
+    ret &= !I2C_write(NFC_W_ADDR);
+    ret &= !I2C_write(mema); // MEMA
+    ret &= !I2C_write(rega); // REGA
+    ret &= !I2C_write(mask); // MASK
+    ret &= !I2C_write(regdat);
+    I2C_stop();
+    return ret;
+}
+
+// bool Nfc_FullDump(uint8_t *buf, uint16_t bufLen)
+// {
+//     if (bufLen < 1024) {
+//         return false;
+//     }
+//     bool ret = true;
+//     for (uint16_t blk = 0; blk < 0x3B; ++blk) {
+//         ret &= !Nfc_MemRead(blk, (buf[16 * blk]));
+//     }
+//     return ret;
+// }
+
+
+/**
+ * @brief 通过Session寄存器开启pass-through功能
+ * 
+ * @param enable 
+ */
+bool Nfc_ConfigurePassThru(bool enable)
+{
+    uint8_t reg = 0;
+    if (enable) {
+        reg = NFC_SESSION_NC_REG_PTHRU_ON_OFF;
+    } else {
+        reg = (uint8_t)~NFC_SESSION_NC_REG_PTHRU_ON_OFF;
+    }
+    return Nfc_WriteReg(NFC_SESSION_REG_MEMA, NFC_SESSION_NC_REG_REGA, NFC_SESSION_NC_REG_PTHRU_ON_OFF, reg);
+    // }
+}
+
+bool Nfc_DirSet(bool nfc2iic)
+{
+    uint8_t reg = 0;
+    if (nfc2iic) {
+        reg = 1;
+    } else {
+        reg = (uint8_t)~1;
+    }
+    return Nfc_WriteReg(NFC_SESSION_REG_MEMA, NFC_SESSION_NC_REG_REGA, 1, reg);
+}
+
+bool Nfc_I2cLock(bool enable)
+{
+    uint8_t reg = 0;
+    if (enable) {
+        reg = NFC_SESSION_NS_REG_I2C_LOCKED;
+    } else {
+        reg = (uint8_t)~NFC_SESSION_NS_REG_I2C_LOCKED;
+    }
+    return Nfc_WriteReg(NFC_SESSION_REG_MEMA, NFC_SESSION_NS_REG_REGA, NFC_SESSION_NS_REG_I2C_LOCKED, reg);
+}
+
+/**
+ * @brief 通过NS_REG判断当前是否有NFC存在
+ * @return true 
+ * @return false 
+ */
+bool Nfc_IsFieldActive(void)
+{
+    uint8_t reg = 0;
+    if (Nfc_ReadReg(NFC_SESSION_REG_MEMA, NFC_SESSION_NS_REG_REGA, &reg)) {
+        return reg & NFC_SESSION_NS_REG_RF_FIELD_PRESENT;
+    }
+    return false;
+}
+
+
+bool Nfc_SetFdPin(uint8_t on, uint8_t off)
+{
+    uint8_t reg = (on << 2) | (off << 4);
+    return Nfc_WriteReg(NFC_SESSION_REG_MEMA, NFC_SESSION_NC_REG_REGA, NFC_SESSION_NC_REG_FD_ON_OFF, reg);
+}
diff --git a/src/nfc/i2c.h b/src/nfc/i2c.h
new file mode 100644
index 0000000..7a000f6
--- /dev/null
+++ b/src/nfc/i2c.h
@@ -0,0 +1,72 @@
+
+#ifndef I2C_H
+#define I2C_H
+#include <stdbool.h>
+#include <stdint.h>
+#include <cc2510fx.h>
+#include "util.h"
+
+// sbit SDA = P1^0;
+// sbit SCL = P1^1;
+
+#define SDA P0_4
+#define SCL P0_6
+#define SDA_OUT() P0DIR |= BV(4);
+#define SDA_IN() P0DIR &= ~BV(4);
+
+
+void I2C_init(void);
+void I2C_start(void);
+void I2C_stop(void);
+void I2C_ack(void);
+void I2C_nack(void);
+uint8_t I2C_write(unsigned char dado);
+uint8_t I2C_read(void);
+// void i2c_device_write(unsigned char slave ,unsigned char reg_add ,unsigned char dado);
+// unsigned char i2c_device_read(unsigned char slave, unsigned char reg_add);
+
+
+
+#define NFC_R_ADDR 0xAB
+#define NFC_W_ADDR 0xAA
+
+#define BBV(x) ((uint8_t)((uint8_t)1u << (uint8_t)(x)))
+
+#define NFC_CONFIGU_REG_MEMA 0x3Au
+#define NFC_SESSION_REG_MEMA 0xFEu
+
+#define NFC_CONFIGU_NC_REG_REGA 0x00u
+#define NFC_CONFIGU_NC_REG_PTHRU_ON_OFF BBV(6)
+
+
+#define NFC_SESSION_NC_REG_REGA 0x00u
+#define NFC_SESSION_NC_REG_PTHRU_ON_OFF BBV(6)
+#define NFC_SESSION_NC_REG_FD_ON_OFF ((uint8_t)0x3cu)
+#define NFC_SESSION_NS_REG_REGA 0x06u
+
+#define NFC_SESSION_NS_REG_NDEF_DATA_READ BBV(7)
+
+#define NFC_SESSION_NS_REG_I2C_LOCKED BBV(6)
+#define NFC_SESSION_NS_REG_RF_LOCKED BBV(5)
+
+#define NFC_SESSION_NS_REG_SRAM_I2C_READY BBV(4)
+#define NFC_SESSION_NS_REG_SRAM_RF_READY BBV(3)
+#define NFC_SESSION_NS_REG_RF_FIELD_PRESENT BBV(0)
+
+
+typedef uint8_t NfcMemoryBlk[16];
+bool Nfc_MemWriteBlk(uint8_t mema, const NfcMemoryBlk buf);
+bool Nfc_MemReadBlk(uint8_t mema, NfcMemoryBlk buf);
+bool Nfc_MemWrite(uint8_t mema, uint8_t *buf);
+bool Nfc_MemRead(uint8_t mema, uint8_t *buf);
+bool Nfc_WriteReg(uint8_t mema, uint8_t rega, uint8_t mask, uint8_t regdat);
+bool Nfc_ReadReg(uint8_t mema, uint8_t rega, uint8_t *regdat);
+
+bool Nfc_FullDump(uint8_t *buf, uint16_t bufLen);
+bool Nfc_DirSet(bool nfc2iic);
+bool Nfc_I2cLock(bool enable);
+bool Nfc_ConfigurePassThru(bool enable);
+bool Nfc_IsFieldActive(void);
+bool Nfc_SetFdPin(uint8_t on, uint8_t off);
+
+#endif // I2C_H
diff --git a/src/time/time.c b/src/time/time.c
new file mode 100644
index 0000000..084e51a
--- /dev/null
+++ b/src/time/time.c
@@ -0,0 +1,32 @@
+#include "time.h"
+#include "../util.h"
+
+static volatile uint32_t currentTime = 0;
+
+
+void time_isr(void) __interrupt(WDT_VECTOR)
+{
+    currentTime += 2;
+    IRCON2 &= ~BV(4); // clear flag
+}
+
+void time_init()
+{
+    WDCTL = BV(3) | BV(2) | 3; // enable WD, timer mode - 2ms
+    IEN2 |= BV(5);             // enable WD interrupt
+}
+
+volatile uint32_t time()
+{
+    uint32_t value;
+    HAL_CRITICAL_STATEMENT(value = currentTime);
+    return value;
+}
+
+void delayMs(uint16_t millis)
+{
+    uint32_t start = time();
+    while (time() - start < millis)
+    {
+    }
+}
\ No newline at end of file
diff --git a/src/time/time.h b/src/time/time.h
new file mode 100644
index 0000000..6982314
--- /dev/null
+++ b/src/time/time.h
@@ -0,0 +1,10 @@
+#ifndef _TIME_H_
+#define _TIME_H_
+
+#include <stdint.h>
+
+void time_init();
+uint32_t time();
+void delayMs(uint16_t millis);
+
+#endif
\ No newline at end of file
diff --git a/src/util.h b/src/util.h
new file mode 100644
index 0000000..d2d1385
--- /dev/null
+++ b/src/util.h
@@ -0,0 +1,37 @@
+
+#ifndef _UTIL_H_
+#define _UTIL_H_
+
+#include <cc2510fx.h>
+#include <stdbool.h>
+
+
+// void SetDebugArray(uint8_t *buf, uint16_t offset, uint16_t size);
+
+#define BV(x) (1 << (x))
+#define st(x) \
+    do        \
+    {         \
+        x     \
+    } while (__LINE__ == -1)
+
+#define HAL_ENABLE_INTERRUPTS() st(EA = 1;)
+#define HAL_DISABLE_INTERRUPTS() st(EA = 0;)
+#define HAL_INTERRUPTS_ARE_ENABLED() (EA)
+
+typedef unsigned char halIntState_t;
+#define HAL_ENTER_CRITICAL_SECTION(x) st(x = EA; HAL_DISABLE_INTERRUPTS();)
+#define HAL_EXIT_CRITICAL_SECTION(x) st(EA = x;)
+#define HAL_CRITICAL_STATEMENT(x) st(halIntState_t _s; HAL_ENTER_CRITICAL_SECTION(_s); x; HAL_EXIT_CRITICAL_SECTION(_s);)
+
+#define LED_BOOST_ON() P2_2 = 1
+#define LED_BOOST_OFF() P2_2 = 0
+#define LED_ON() P2_1 = 1
+#define LED_OFF() P2_1 = 0
+#define LED_TOGGLE() P2_1 ^= 1
+#define LED_INIT() do { \
+        P2DIR |= BV(1) | BV(2); \
+        LED_OFF();                \
+    } while (0)
+
+#endif
\ No newline at end of file