release(golden): 托底线整体替换为生产实装版原样复制（v26.1.0.3）并重编 B 槽固件

- 生产仓库（GitLab ceramixnano_eddy_cmake_vscode dev@151828f，已在机器上实装）原样复制 8 文件：Src/command.c、i2c.c、ldc1612.c、tmp112.c；Inc/command.h、i2c.h、ldc1612.h；CommunicationProtocol.md（copy 后 fc 逐字节核验一致）
- 保留 B 槽专属构建（LD 0x0800B000/0x4BF8、VTOR 0xB000、gap-fill 0xFF、BUILD_VARIANT=golden），仅 VERSION_PATCH 2→3 对齐生产
- 与 dev 线从此的功能差异属预期（勿"修复"）：LDC1612 驱动电流 GEN(8)（生产 2026-03-23 调参，dev 线仍 GEN(18)）、命令集 M1~M4+M999/M9999（无 M5/M6）、M4 无符号温度算法、旧 8 位寄存器地址 i2c 驱动（配套 tmp112/ldc1612 整组生效）；IIC 新驱动留待后续 A 线版本
- 保底判定值 v26.1.0.2 → v26.1.0.3；两个版本号均永不再用于 OTA 升级包；dev 线后续 A 版本必须 > V1.0.3（当前 dev 同为 V1.0.3，正式发布前须升版）
- 重编译：text+data = 12,036B；向量表校验通过（复位向量 0x0800CC2C 落 B 槽）
- FACTORY 工厂镜像（BL EDDY V0.1.0 + B 满槽 + flag，A 擦除态）已打包：Build\golden\CeramixNano-EDDY_FACTORY_B-V1.0.3_2026-10-25.bin，12 项字节校验全过

AGENTS.md

@@ -47,7 +47,7 @@ LDC1612（电涡流/电感数字转换器）+ TMP112（板载温度），RS485
 
 ```
 0x08000000 ┌─────────────────┐
-           │    Bootloader   │  8K   页 0~7     复用 MB 板 BL bin（V0.1.0，4,044B，MD5 f7b447cf…）
+           │    Bootloader   │  8K   页 0~7     专属分支 bootloader_CeramixNano_EDDY（V0.1.0，4,040B）
 0x08002000 ├─────────────────┤
            │  FW_A 运行槽    │  36K  页 8~43    OTA/Ymodem 接收区；锚点 A 记录@0x0800AFFC
 0x0800B000 ├─────────────────┤
@@ -57,15 +57,18 @@ LDC1612（电涡流/电感数字转换器）+ TMP112（板载温度），RS485
 0x08010000 └─────────────────┘
 ```
 
-- **BL 复用**：直接使用 `gd32e230_bootloader` 仓库 `bootloader_CeramixNano_MB` 分支
+- **BL = 并列板卡分支 `bootloader_CeramixNano_EDDY`**（BL 仓库，2026-10-24 自 MB 分支
-  V0.1.0 bin（RS485 引脚/波特率/DE 方案与 EDDY 完全一致；唯一差异 LED 引脚
+  创建；板卡宏 CERAMIXNANO_EDDY，**LED=PB1**，Ymodem 每成功烧录一包翻转一次，逻辑
-  MB=PA14 / EDDY=PB1——BL 的 LED 仅 Ymodem 收包闪烁，纯装饰，EDDY 板不亮无碍）。
+  同 MB 分支；版本独立编号 V0.1.0 = 4,040B，MD5 1dcc17bf…）。RS485 配置与 MB 逐宏
+  相同；**PA14 不被 BL 占用 ⇒ 升级会话期间 SWD 保持可用**（MB 分支 BL 的 LED=PA14
+  会占 SWCLK，勿混烧）。
 - **A 线 = dev/main**：链接 0x08002000 / **LENGTH 36K**（LD 上限防溢出 B 槽），
   VTOR 0x2000；版本从 V1.0.3 起（首个双固件 A 版本，码 26）。
 - **B 线 = release/golden**：链接 0x0800B000 / LENGTH 0x4BF8（19K−8B，B 记录由打包
   工具写入，链接区不含尾 8B——与 MB 的 .fw_tail 方案等价），VTOR 0xB000；
-  **版本冻结 V1.0.2**（保底判定值 = M999 返回 `v26.1.0.2` ⇔ 在跑 FW_B，该版本号
+  **版本冻结 V1.0.3 = 生产实装版原样复制（2026-10-25 起，见开发进度）**。保底判定值
-  永不再用于 OTA 升级包）。此分支改动不得合回 dev/main。
+  = M999 返回 `v26.1.0.3` ⇔ 在跑 FW_B；`v26.1.0.2`（旧 golden）与 `v26.1.0.3` 均永不
+  再用于 OTA 升级包版本，dev 线后续 A 版本必须 > V1.0.3。此分支改动不得合回 dev/main。
 - 打包：`hulk-mcu-firmware` skill / merge tool profile **`CeramixNano_EDDY_Dual_FW`**
   （布局与 `CeramixNano_MB_Dual_FW` 逐字节相同），产出 `_UPDATE/_FULL/_FACTORY + MD5`。
 - 升级链路：上位机（原 SOC 职责）—RS485—> BL（Ymodem）；APP 用 `M9999` 软复位进
@@ -86,40 +89,66 @@ LDC1612（电涡流/电感数字转换器）+ TMP112（板载温度），RS485
 - 2026-10-02：IIC 驱动改进导入（总线恢复重试/超时辅助/read_raw/scan AERR 处理）；
   硬件全命令实测通过；DAPLink 烧录问题解决；发布 V1.0.2（Gitea Release + tag）
 - **2026-10-24：双固件（出厂救援）方案移植完成并全链路实测通过**（详见下节）
-  - BL 复用 MB V0.1.0 bin（未改动 BL 代码，仅文档说明）
+  - BL 仓库新建并列板卡分支 `bootloader_CeramixNano_EDDY`（LED=PB1，V0.1.0 = 4,040B，
+    每收包翻转一次；此前短暂采用"复用 MB bin"方案，因 LED 引脚不同已废弃并重打包）
   - dev：LD 54K→36K、命名 CeramixNano-EDDY、板卡码 26、V1.0.3；
     golden：V1.0.2 冻结命名 + variant=golden
   - 两线 CMake 补齐 `--gap-fill=0xFF` 与 `LD LINK_DEPENDS`
   - fw_pack 新增 `CeramixNano_EDDY_Dual_FW` profile（55 项回归过，skill 缓存已同步）
   - 产物（`Build/test/dualfw_2026-10-24/`）：UPDATE（12 页，trailer 0x5C09000C）、
-    FULL（A=V1.0.3/B=V1.0.2，19 项校验过）、FACTORY（12 项校验过）+ MD5 清单；
+    FULL（EDDY BL + A=V1.0.3/B=V1.0.2，19 项校验过）、FACTORY（12 项校验过）+ MD5 清单；
     独立 python XMODEM 复算全部命中
-  - **硬件实测矩阵（SWD 探针 PC 采样 + 485 命令双重手段，全部 PASS）**：
+  - **硬件实测矩阵（SWD 探针 PC 采样 + 485 命令双重手段，全部 PASS；先用 MB bin 实测，
+    换 EDDY 专属 BL 后 FULL/FACTORY/OTA 全周期复测通过）**：
     FACTORY→跳B(v26.1.0.2) / FULL→记录路径跳A(v26.1.0.3) / PC 模拟 SOC 完整 OTA
     44s 成功+读回整片逐字节与包一致（B 区在真实 OTA 中毫发无损）/
     擦锚点页→legacy 跳A / 锚点在位毁A体→CRC 拦截直落B（防降级）/
     再毁B体→拒跳坏固件停留 BL(PC=0x080001B6) / OTA 第4包 CA 中止→落B /
     非整页裸 bin 包→头部预检 CA×2 拒收→落B / M3/M4/M6 功能全通
 
+- **2026-10-25：golden 托底线整体替换为生产实装版原样复制**（用户决策：生产版已在
+  机器上实装，托底必须与其同源，不做任何"顺手改进"；IIC 新驱动等留给后续 A 线新版本）：
+  - 来源：生产仓库（GitLab `ceramixnano_eddy_cmake_vscode`，dev@151828f，v26.1.0.3，
+    2026-03-23 已含驱动电流调参 GEN(18)→GEN(8)）；复制 8 文件（Src: command.c/i2c.c/
+    ldc1612.c/tmp112.c；Inc: command.h/i2c.h/ldc1612.h；CommunicationProtocol.md），
+    复制后 `fc /b` 逐字节核验一致
+  - golden 从此与 dev 线的功能差异（**属预期，勿"修复"**）：LDC1612 驱动电流 **GEN(8)**
+    （dev 线仍为 GEN(18)，后续 A 线新版本需评估回合生产调参）；命令集 **M1~M4 +
+    M999/M9999（无 M5/M6）**；M4 温度为生产版无符号算法；i2c 为旧 8 位寄存器地址 API
+    驱动（与 tmp112.c/ldc1612.c 配套，整组生效）
+  - golden 保留项（B 槽专属构建）：LD 0x0800B000/0x4BF8、VTOR 0xB000、gap-fill 0xFF、
+    BUILD_VARIANT=golden；仅 VERSION_PATCH 2→3 与生产对齐
+  - **保底判定值改为 `v26.1.0.3`**；注意 dev 线当前同为 V1.0.3（10-24 的 FULL 测试包
+    A=V1.0.3）——后续 A 线正式版本必须升到 V1.0.4 以上，否则 M999 无法区分保底
+
 ### 计划 / TODO
 
 - dev → main 合并待发布节奏（V1.0.3 为首个双固件 A 版本，main 仍是 54K 单槽布局）
 - M5 温度补偿系数目前为 0（TEMP_COMP_COEFF_*），待标定后填入实际温漂系数
-- 上位机/SOC 侧需预存保底判定值 `v26.1.0.2`（跑 B ⇒ 升级未生效重推）
+- 上位机/SOC 侧需预存保底判定值 `v26.1.0.3`（跑 B ⇒ 升级未生效重推；2026-10-25 起判定值随生产版复制从 v26.1.0.2 改为 v26.1.0.3）
 - （可选）模板侧 SEGGER RTT / CFG_ENABLE 宏体系同步
 
+### 已删除的历史分支（2026-10-24 清理，均为开发过程产物）
+
+- `dev_more_information`（远端）：零独有提交，内容早已全部并入 main/dev。
+- `dev_feature_iic_more_byte`（远端）：仅 2 个 2025-08-25 的孤立实验提交，从未接入构建——
+  `75ea93c`（iic_new.c 975 行并行驱动实验，实际采用的是后来模板导入 i2c.c 的改进）、
+  `dbb6569`（"dlpc3421 driver from kimi"，DLPC3421 为 MB 光机芯片，与本板无关）。
+  如需找回：本地对象库在 gc 前仍可 `git show <hash>`。
+
 ### 教训（避免复发）
 
 - **SWRSTF 残留**：M9999/调试器软复位置位的 SWRSTF **不随 NRST/SRST 清除**（仅 POR
   或 RSTFC 清），此后任何复位 BL 都直进升级模式、不跳 APP——表现为"设备沉默，
   M999 无响应，但 0x30 能回 ok"。排障/测试时须 SWD `mww 0x40021024 0x01000000`
   清标志后再放跑（`swd.py boot` 已内置）。
-- **BL 收到 0x30 后 SWD 必死**：复用的 MB BL 在 0x30 应答后调用 gpio_init 把
+- **（历史）误烧 MB 分支 BL 会让 SWD 在 0x30 后失联**：MB 分支 BL 的 LED=PA14
-  PA14（EDDY 板=SWCLK）切为 LED 输出。因此：探针类 SWD 操作前**不要**发 0x30；
+  （SWCLK），0x30 应答后切输出 ⇒ SWD 死。**本板专用 `bootloader_CeramixNano_EDDY`
-  OTA/升级会话结束后 SWD 失联属预期，恢复 = `M9999` 复位（PA14 回默认）后再连。
+  分支 LED=PB1，PA14 不占用，升级会话期间 SWD 全程可用**（2026-10-24 起所有镜像
-  若 APP 也没在跑（BL 卡收包），用 connect_assert_srst 变体 cfg
+  均为 EDDY BL，此坑仅存档）。若真误烧：`M9999` 复位（有 APP 时）或用
-  （`Toolchain/eddy_test/daplink_srst.cfg`）脉冲 SRST 复位恢复——SRST 线已验证接通，
+  connect_assert_srst 变体 cfg（`Toolchain/eddy_test/daplink_srst.cfg`）脉冲 SRST
-  但该 DAPLink 下 examination 必失败属正常，复位本身生效。
+  复位恢复——SRST 线已验证接通，但该 DAPLink 下 examination 必失败属正常，
+  复位本身生效。
 - **Ymodem 文件头 ACK 后是 ACK+'C' 连发**：发送器若分两次等会永远等不到第二个 'C'
   （首次 OTA 调试即栽在此，BL 无超时会卡死；随后发 5×CA 可解）。
 - OpenOCD `program`/`dump_image` 的文件路径必须转正斜杠，否则 Tcl 吃掉 `\l` `\t`。

CommunicationProtocol.md

@@ -58,28 +58,5 @@
 
 ### 4. 单次读取并发送板载温度传感器数据
 
-- M4 指令 单次读取并发送板载温度传感器数据（TMP112，返回温度值×10000，4 字节有符号大端）
+- M3 指令 单次读取并发送板载温度传感器数据
     - `D5 03 02 4D 34 86`
-    - 示例回复：`B5 F0 04 00 04 28 74 94`，有效数据 `0x00042874` = 272500，即 `27.25°C`
-
-### 5. 单次读取并发送温度补偿后的涡流传感器数据
-
-- M5 指令 单次读取并发送温度补偿后的涡流传感器数据（补偿系数默认为 0，与 M3 等价）
-    - `D5 03 02 4D 35 87`
-
-### 6. 单次读取并发送标定数据（涡流原始值 + 温度值）
-
-- M6 指令 单次读取涡流原始值和板载温度值，用于温度标定
-    - `D5 03 02 4D 36 88`
-    - 回复 9 字节：涡流原始值(4字节大端) + 0xFF + 温度值×10000(4字节大端)
-    - 示例回复：`B5 F0 09 01 AD BA DC FF 00 04 28 74 DC`
-
-### 7. 查询固件版本号
-
-- M999 指令 返回固件版本号字符串，如 `v23.1.0.1`（板卡类型.主版本.次版本.修订号）
-    - `D5 03 04 4D 39 39 39 FF`
-
-### 8. 复位 MCU
-
-- M9999 指令 立即复位 MCU（无回复）
-    - `D5 03 05 4D 39 39 39 39 39`

Inc/command.h

@@ -105,8 +105,4 @@ void eddy_current_report(void);
 
 void temperature_raw_value_report(void);
 
-void eddy_current_compensated_report(void);
-
-void calibration_data_report(void);
-
 #endif // COMMAND_H

Inc/i2c.h

@@ -89,9 +89,9 @@ i2c_result_t i2c_bus_reset(void);
 void i2c_scan(void);
 
 /*!
-    \brief      write 16-bit data to I2C device (8-bit register address + 2 data bytes)
+    \brief      write 16-bit data to I2C device
     \param[in]  slave_addr: 7-bit slave address
-    \param[in]  reg_addr: register address (8-bit)
+    \param[in]  reg_addr: register address
     \param[in]  data: pointer to 2-byte data array
     \param[out] none
     \retval     i2c_result_t
@@ -99,9 +99,9 @@ void i2c_scan(void);
 i2c_result_t i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]);
 
 /*!
-    \brief      read 16-bit data from I2C device (8-bit register address + 2 data bytes)
+    \brief      read 16-bit data from I2C device
     \param[in]  slave_addr: 7-bit slave address
-    \param[in]  reg_addr: register address (8-bit)
+    \param[in]  reg_addr: register address
     \param[out] data: pointer to 2-byte data buffer
     \retval     i2c_result_t
 */
@@ -111,33 +111,70 @@ i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data
 /*!
     \brief      write data to I2C device with configurable length
     \param[in]  slave_addr: slave device address (7-bit)
-    \param[in]  reg_addr: register address (16-bit, high byte first)
+    \param[in]  reg_addr: register address
     \param[in]  data: pointer to data buffer
     \param[in]  length: number of bytes to write (1-255)
     \param[out] none
     \retval     i2c_result_t: operation result
 */
-i2c_result_t i2c_write(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint8_t length);
+i2c_result_t i2c_write(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8_t length);
 
 /*!
     \brief      read data from I2C device with configurable length
     \param[in]  slave_addr: slave device address (7-bit)
-    \param[in]  reg_addr: register address (16-bit, high byte first)
+    \param[in]  reg_addr: register address
     \param[out] data: pointer to data buffer
     \param[in]  length: number of bytes to read (1-255)
     \retval     i2c_result_t: operation result
 */
-i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint8_t length);
+i2c_result_t i2c_read(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8_t length);
 
-/* Pure read response without sub-address phase (for commands that already sent read request parameters) */
+/* Convenience functions for common operations */
 /*!
-    \brief      read data from I2C device without register/sub-address phase
+    \brief      write single byte to I2C device
     \param[in]  slave_addr: slave device address (7-bit)
-    \param[out] data: pointer to data buffer
+    \param[in]  reg_addr: register address
-    \param[in]  length: number of bytes to read (1-255)
+    \param[in]  data: data byte to write
     \retval     i2c_result_t: operation result
 */
-i2c_result_t i2c_read_raw(uint8_t slave_addr, uint8_t *data, uint8_t length);
+i2c_result_t i2c_write_8bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data);
+
+/*!
+    \brief      read single byte from I2C device
+    \param[in]  slave_addr: slave device address (7-bit)
+    \param[in]  reg_addr: register address
+    \param[out] data: pointer to data byte
+    \retval     i2c_result_t: operation result
+*/
+i2c_result_t i2c_read_8bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data);
+
+/*!
+    \brief      write 32-bit data to I2C device
+    \param[in]  slave_addr: slave device address (7-bit)
+    \param[in]  reg_addr: register address
+    \param[in]  data: pointer to 4-byte data array
+    \retval     i2c_result_t: operation result
+*/
+i2c_result_t i2c_write_32bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[4]);
+
+/*!
+    \brief      read 32-bit data from I2C device
+    \param[in]  slave_addr: slave device address (7-bit)
+    \param[in]  reg_addr: register address
+    \param[out] data: pointer to 4-byte data buffer
+    \retval     i2c_result_t: operation result
+*/
+i2c_result_t i2c_read_32bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data);
+
+/*!
+    \brief      read display panel parameters (multi-byte)
+    \param[in]  slave_addr: slave device address (7-bit)
+    \param[in]  reg_addr: register address
+    \param[out] data: pointer to data buffer
+    \param[in]  length: number of bytes to read (1-13)
+    \retval     i2c_result_t: operation result
+*/
+i2c_result_t i2c_read_display_params(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8_t length);
 
 #ifdef DEBUG_VERBOSE
 /*!

Inc/ldc1612.h

@@ -445,7 +445,7 @@
 // 参数 idrive: 0-31之间的整数
 #define LDC1612_DRIVE_CURRENT_GEN(idrive)   ( (uint16_t)(idrive) << 11 )
 
-#define LDC1612_DRIVE_CURRENT              LDC1612_DRIVE_CURRENT_GEN(18) // 0x9000
+#define LDC1612_DRIVE_CURRENT              LDC1612_DRIVE_CURRENT_GEN(8) // 0x9000
 
 /**************************IDs (Read Only 0x7E 0x7F)***********************************/
 

README.md

@@ -1,6 +1,6 @@
-# LDC1612 传感器固件
+# CeramixNano-EDDY（LDC1612）传感器固件
 
-本仓库基于 GD32E23x CMake + VSCode 工程模板（`gd32e23x_template_cmake_vscode`），包含 LDC1612 电感采样、TMP112 温度采集及补偿、RS485 命令处理。当前版本为 V1.0.1。固件采用 Bootloader + APP 布局：APP 链接在 `0x08002000`（54KB Flash / 8KB RAM），启动时自设向量表偏移；开发进度与审查资料见 `doc/` 目录。
+本仓库基于 GD32E23x CMake + VSCode 工程模板（`gd32e23x_template_cmake_vscode`），包含 LDC1612 电感采样、TMP112 温度采集及补偿、RS485 命令处理。**版本按分支区分**：`release/golden` = 出厂保底线 **V1.0.3（冻结，生产实装版原样复制）**；`dev` = 双固件 A 线 **V1.0.3（开发中）**；`main` = 旧单槽布局线（LDC1612 旧名，V1.0.2）。固件采用双固件（出厂救援）布局：dev 线 APP 链接在 `0x08002000`（36KB A 槽 / 8KB RAM），golden 线链接 `0x0800B000`（B 槽），启动时自设向量表偏移；布局详情见下文「固件布局与 Bootloader」，开发进度见 `AGENTS.md`。
 
 ## 本地编译
 
@@ -16,7 +16,7 @@ cmake --preset Release
 cmake --build --preset Release
 ```
 
-输出位于 `Build/Debug` 或 `Build/Release`：`Application/Application.elf` 用于调试，`LDC1612_V1.0.1_APP_<日期>.bin` / `.hex` 为应用固件；`Application/Application.hex` 供 J-Link 烧录任务使用。应用固件不含 Bootloader：单独烧录需写到 `0x08002000`；整片烧录（Bootloader + APP + 标志页）用配套的固件合并工具（`gd32e230f8_firmware_merge_tool` 仓库）处理。详见[固件布局与 Bootloader](#固件布局与-bootloader)。
+输出位于 `Build/Debug` 或 `Build/Release`：`Application/Application.elf` 用于调试，`CeramixNano-EDDY_<版本>_<BUILD_VARIANT>_<日期>.bin` / `.hex` 为应用固件；`Application/Application.hex` 供 J-Link 烧录任务使用。应用固件不含 Bootloader：单独烧录需写到 `0x08002000`；整片烧录（Bootloader + APP + 标志页）用配套的固件合并工具（`gd32e230f8_firmware_merge_tool` 仓库）处理。详见[固件布局与 Bootloader](#固件布局与-bootloader)。
 
 如果切换 ARM GCC 版本，请使用新的构建目录，或通过 CMake Tools 的 “Delete Cache and Reconfigure” 重新配置。需要独立验证目录时可运行：
 
@@ -47,9 +47,9 @@ GD32E230F8（64KB Flash）采用与 CeramixNano-MB 相同的双固件（出厂
 
 | 区域 | 地址范围 | 说明 |
 |---|---|---|
-| Bootloader | `0x08000000` - `0x08001FFF`（8KB，页 0~7） | **复用 CeramixNano-MB 板 BL**（V0.1.0，4,044B）——RS485 引脚/波特率/DE 方案完全一致；启动判定链 + RS485 Ymodem OTA |
+| Bootloader | `0x08000000` - `0x08001FFF`（8KB，页 0~7） | **专属分支 `bootloader_CeramixNano_EDDY`**（V0.1.0，4,040B，LED=PB1，Ymodem 每烧录一包翻转一次；与 MB 分支并列、版本独立编号）——启动判定链 + RS485 Ymodem OTA；PA14 不占用，升级会话期间 SWD 可用 |
 | FW_A 运行槽（本仓库 dev/main） | `0x08002000` - `0x0800AFFF`（36KB，页 8~43） | 唯一 OTA/Ymodem 接收区；链接 `ORIGIN=0x08002000, LENGTH=36K`（上限防溢出 B 槽）；槽尾锚点 A 记录 @`0x0800AFFC` |
-| FW_B 出厂保底槽（release/golden 分支） | `0x0800B000` - `0x0800FBFF`（19KB，页 44~62） | 出厂救援固件（版本冻结 V1.0.2），OTA 永不擦写；B 记录 @`0x0800FBF8` |
+| FW_B 出厂保底槽（release/golden 分支） | `0x0800B000` - `0x0800FBFF`（19KB，页 44~62） | 出厂救援固件（版本冻结 V1.0.3，生产实装版原样复制），OTA 永不擦写；B 记录 @`0x0800FBF8` |
 | 末页标志页 | `0x0800FC00` - `0x0800FFFF`（1KB，页 63） | legacy 标志 `0xEEEE` @`0x0800FFFC` |
 
 启动判定：A 记录在位 ⇒ trailer 比对 + 固件体 CRC 复算 + 向量校验 ⇒ 跳 A（不过直落 B，防降级）；锚点擦除态 ⇒ legacy flag ⇒ 跳 A；B 记录 CRC 复算通过 ⇒ 跳 B；否则留 BL 等 Ymodem。OTA 中途断电/中止 ⇒ 重启落 B 跑出厂固件，**设备不变砖**。
@@ -58,7 +58,7 @@ GD32E230F8（64KB Flash）采用与 CeramixNano-MB 相同的双固件（出厂
 
 - `LD/gd32e23x_flash.ld`：FLASH `ORIGIN = 0x08002000, LENGTH = 36K`；
 - `Src/system_gd32e23x.c`：`VECT_TAB_OFFSET = 0x2000`——Bootloader 不写 VTOR，APP 必须自己把向量表指到 `0x08002000`，否则中断会落回 Bootloader 向量表（现象：收到第一个 RS485 字节即死机）；
-- 出厂保底固件在 `release/golden` 分支构建（`ORIGIN=0x0800B000 / LENGTH=0x4BF8`、`VECT_TAB_OFFSET=0xB000`，版本冻结 V1.0.2，判定值 `v26.1.0.2`）；
+- 出厂保底固件在 `release/golden` 分支构建（`ORIGIN=0x0800B000 / LENGTH=0x4BF8`、`VECT_TAB_OFFSET=0xB000`，版本冻结 V1.0.3 = **生产实装版原样复制**——命令集 M1~M4 + M999/M9999、LDC1612 驱动电流 `GEN(8)`、旧 8 位寄存器地址 i2c 驱动；判定值 `v26.1.0.3`）；
 - 打包（`_UPDATE/_FULL/_FACTORY` + MD5）用 merge tool / `hulk-mcu-firmware` skill，profile `CeramixNano_EDDY_Dual_FW`；产物命名 `CeramixNano-EDDY_*`（板卡码 26）。
 
 ⚠️ 与旧版 54K 单槽布局不兼容：需整片烧录一次（FACTORY/FULL 镜像）。RS485 协议、命令集（M1-M6/M999/M9999）与回包格式无任何变化。方案完全体文档见 MB 仓库 `doc/双固件方案_完全体说明.md`；开发约定与实测记录见本项目 `AGENTS.md`。

Src/command.c

@@ -74,15 +74,6 @@
 #define RESP_TYPE_LEN_ERR         0xF4  /**< 长度错误 */
 /** @} */
 
-/* 温度补偿参数定义
- * TEMP_COMP_REF_TEMP_X10000: 参考温度，单位 0.0001°C
- * TEMP_COMP_COEFF_NUMERATOR / TEMP_COMP_COEFF_DENOMINATOR: 温漂系数，默认表示 counts/°C
- * 补偿公式: compensated = raw - (temp - ref) * coeff
- */
-#define TEMP_COMP_REF_TEMP_X10000      (250000L)
-#define TEMP_COMP_COEFF_NUMERATOR      (0L)
-#define TEMP_COMP_COEFF_DENOMINATOR    (10000L)
-
 /* ============================================================================
  * 模块内部变量
  * ============================================================================ */
@@ -104,9 +95,6 @@ static const uint8_t s_report_status_ok[]  = { 'o', 'k' };   /**< 成功响应
 static const uint8_t s_report_status_err[] = { 'e','r','r' }; /**< 错误响应数据 */
 /** @} */
 
-static int32_t tmp112_get_temperature_x10000(void);
-static int64_t calculate_temperature_compensation_offset(int32_t temperature_x10000);
-
 /* ============================================================================
  * 公共接口函数
  * ============================================================================ */
@@ -344,14 +332,6 @@ void handle_command(const uint8_t *frame, uint8_t len) {
                 temperature_raw_value_report();
                 return;
 
-            case 5u:
-                eddy_current_compensated_report();
-                return;
-
-            case 6u:
-                calibration_data_report();
-                return;
-
             // case 201u: // M201命令
             //     send_response(RESP_TYPE_OK, s_report_status_ok, sizeof(s_report_status_ok));
             //     return;
@@ -533,82 +513,20 @@ void eddy_current_report(void) {
     send_response(RESP_TYPE_OK, sensor_data, sizeof(sensor_data));
 }
 
-static int32_t tmp112_get_temperature_x10000(void)
-{
-    uint8_t value[2] = {0};
-    int16_t temp_raw;
-
-    tmp112a_get_raw_temperature_value(value);
-
-    temp_raw = (int16_t)(((uint16_t)value[0] << 8) | value[1]);
-    temp_raw >>= 4;
-
-    return (int32_t)temp_raw * 625;
-}
-
-static int64_t calculate_temperature_compensation_offset(int32_t temperature_x10000)
-{
-    int32_t delta_temp_x10000 = temperature_x10000 - TEMP_COMP_REF_TEMP_X10000;
-
-    return ((int64_t)delta_temp_x10000 * TEMP_COMP_COEFF_NUMERATOR) /
-           TEMP_COMP_COEFF_DENOMINATOR;
-}
-
 void temperature_raw_value_report(void) {
+    // if (!g_temperature_sensor_report_enabled) return;
     uint8_t raw_result[4];
-    int32_t raw_value = tmp112_get_temperature_x10000();
+    uint8_t value[2] = {0};
+    uint32_t raw_value = 0;
 
-    raw_result[0] = (uint8_t)((uint32_t)raw_value >> 24);
+    // i2c_read_16bits(TMP112A_ADDR, TMP112A_TEMP_REG, value);
-    raw_result[1] = (uint8_t)((uint32_t)raw_value >> 16);
+    tmp112a_get_raw_temperature_value(value);
-    raw_result[2] = (uint8_t)((uint32_t)raw_value >> 8);
+    raw_value = (uint32_t)((uint16_t) (value[0] << 4) | (value[1]>>4)) * 625;
-    raw_result[3] = (uint8_t)((uint32_t)raw_value & 0xFF);
+    raw_result[0] = (uint8_t)(raw_value >> 24);
+    raw_result[1] = (uint8_t)(raw_value >> 16);
+    raw_result[2] = (uint8_t)(raw_value >> 8);
+    raw_result[3] = (uint8_t)(raw_value & 0xFF);
 
     send_response(RESP_TYPE_OK, raw_result, sizeof(raw_result));
 }
     
-void eddy_current_compensated_report(void)
-{
-    uint8_t sensor_data[4];
-    uint32_t raw_result = ldc1612_get_raw_channel_result(CHANNEL_0);
-
-    if ((raw_result & 0xF0000000u) == 0u) {
-        int32_t temperature_x10000 = tmp112_get_temperature_x10000();
-        int64_t compensated_value = (int64_t)raw_result -
-                                    calculate_temperature_compensation_offset(temperature_x10000);
-
-        if (compensated_value < 0) {
-            raw_result = 0;
-        } else if (compensated_value > 0x0FFFFFFFLL) {
-            raw_result = 0x0FFFFFFFu;
-        } else {
-            raw_result = (uint32_t)compensated_value;
-        }
-    }
-
-    sensor_data[0] = (uint8_t)(raw_result >> 24);
-    sensor_data[1] = (uint8_t)(raw_result >> 16);
-    sensor_data[2] = (uint8_t)(raw_result >> 8);
-    sensor_data[3] = (uint8_t)(raw_result & 0xFF);
-
-    send_response(RESP_TYPE_OK, sensor_data, sizeof(sensor_data));
-}
-
-void calibration_data_report(void)
-{
-    uint8_t payload[9];
-    uint32_t eddy_raw_value = ldc1612_get_raw_channel_result(CHANNEL_0);
-    int32_t temperature_raw_value = tmp112_get_temperature_x10000();
-
-    payload[0] = (uint8_t)(eddy_raw_value >> 24);
-    payload[1] = (uint8_t)(eddy_raw_value >> 16);
-    payload[2] = (uint8_t)(eddy_raw_value >> 8);
-    payload[3] = (uint8_t)(eddy_raw_value & 0xFF);
-    payload[4] = 0xFF;
-    payload[5] = (uint8_t)((uint32_t)temperature_raw_value >> 24);
-    payload[6] = (uint8_t)((uint32_t)temperature_raw_value >> 16);
-    payload[7] = (uint8_t)((uint32_t)temperature_raw_value >> 8);
-    payload[8] = (uint8_t)((uint32_t)temperature_raw_value & 0xFF);
-
-    send_response(RESP_TYPE_OK, payload, sizeof(payload));
-}
-    

Src/i2c.c

@@ -34,7 +34,6 @@ void i2c_gpio_config(void) {
 i2c_result_t i2c_config(void) {
     /* configure I2C GPIO */
     i2c_gpio_config();
-
     /* enable I2C clock */
     rcu_periph_clock_enable(RCU_I2C);
     /* configure I2C clock */
@@ -150,7 +149,7 @@ i2c_result_t i2c_bus_reset(void) {
     }
 
 #ifdef DEBUG_VERBOSE
-    printf("I2C bus reset: bus recovered\r\n");
+        printf("I2C bus reset: bus recovered\r\n");
 #endif
     /* 8. Reconfigure & enable peripheral */
     i2c_config();
@@ -198,12 +197,10 @@ void i2c_scan(void) {
         i2c_master_addressing(I2C0, (address << 1), I2C_TRANSMITTER);
         timeout = 0;
 
-        // 等待地址发送完成或错误
+        // 等待地址发送完成
-        while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && !i2c_flag_get(I2C0, I2C_FLAG_AERR) && (timeout < I2C_TIME_OUT))
+        while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
             timeout++;
-
+        if (timeout < I2C_TIME_OUT) {
-        if (timeout < I2C_TIME_OUT && i2c_flag_get(I2C0, I2C_FLAG_ADDSEND)) {
-            // 设备响应 - 清除地址标志
             i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
             // printf("Found device at 0x%02X\r\n", address);
             const char* msg2_prefix = "Found device at 0x";
@@ -224,9 +221,6 @@ void i2c_scan(void) {
             }
             while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TC) == RESET) {}
             found_devices++;
-        } else if (i2c_flag_get(I2C0, I2C_FLAG_AERR)) {
-            // 设备无响应 - 清除错误标志
-            i2c_flag_clear(I2C0, I2C_FLAG_AERR);
         }
 
         // 生成停止条件
@@ -269,53 +263,6 @@ void i2c_scan(void) {
     }
 }
 
-/**
- * @brief 内部辅助函数：等待指定的I2C标志位被设置，带有超时。
- * @param[in]  flag: 要等待的I2C事件标志。
- * @retval     i2c_result_t: I2C_RESULT_SUCCESS 或 I2C_RESULT_TIMEOUT。
- */
-static i2c_result_t _i2c_wait_flag_timeout(uint32_t flag)
-{
-    uint16_t timeout = 0;
-    while(!i2c_flag_get(I2C0, flag)){
-        if(timeout++ > I2C_TIME_OUT){
-#ifdef DEBUG_VERBOSE
-            const char* fname = "UNKNOWN";
-            switch (flag) {
-                case I2C_FLAG_SBSEND: fname = "SBSEND"; break;
-                case I2C_FLAG_ADDSEND: fname = "ADDSEND"; break;
-                case I2C_FLAG_TBE: fname = "TBE"; break;
-                case I2C_FLAG_RBNE: fname = "RBNE"; break;
-                case I2C_FLAG_BTC: fname = "BTC"; break;
-                case I2C_FLAG_AERR: fname = "AERR"; break;
-                case I2C_FLAG_BERR: fname = "BERR"; break;
-                case I2C_FLAG_LOSTARB: fname = "LOSTARB"; break;
-                case I2C_FLAG_I2CBSY: fname = "I2CBSY"; break;
-            }
-            printf("I2C wait flag timeout: flag=0x%08X (%s)\r\n", (unsigned int)flag, fname);
-#endif
-            return I2C_RESULT_TIMEOUT;
-        }
-    }
-    return I2C_RESULT_SUCCESS;
-}
-
-/**
- * @brief 内部辅助函数：等待指定的I2C标志位被清除，带有超时。
- * @param[in]  flag: 要等待的I2C事件标志。
- * @retval     i2c_result_t: I2C_RESULT_SUCCESS 或 I2C_RESULT_TIMEOUT。
- */
-static i2c_result_t _i2c_wait_flag_clear_timeout(uint32_t flag)
-{
-    uint16_t timeout = 0;
-    while(i2c_flag_get(I2C0, flag)){
-        if(timeout++ > I2C_TIME_OUT){
-            return I2C_RESULT_TIMEOUT;
-        }
-    }
-    return I2C_RESULT_SUCCESS;
-}
-
 i2c_result_t i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]) {
     i2c_state_t state = I2C_STATE_START;
     uint16_t timeout = 0;
@@ -378,7 +325,7 @@ i2c_result_t i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data
                 } else {
                     i2c_flag_clear(I2C0, I2C_FLAG_AERR);
                     timeout =0;
-#ifdef DEBUG_VERBOSE
+#ifdef DEBUG_VERBOES
                     printf("IIC write failed for Error Slave Address. \n");
 #endif
                     return I2C_RESULT_NACK;
@@ -386,28 +333,39 @@ i2c_result_t i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data
 
             case I2C_STATE_TRANSMIT_REG:
                 /* wait until the transmit data buffer is empty */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
 
                 /* send register address */
                 i2c_data_transmit(I2C0, reg_addr);
+                timeout = 0;
                 state = I2C_STATE_TRANSMIT_DATA;
                 break;
 
             case I2C_STATE_TRANSMIT_DATA:
                 /* wait until the transmit data buffer is empty */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
 
                 /* send register MSB value */
                 i2c_data_transmit(I2C0, data[0]);
+                timeout = 0;
                 
                 /* wait until the transmit data buffer is empty */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
@@ -423,9 +381,13 @@ i2c_result_t i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data
 
                 /* send register LSB value */
                 i2c_data_transmit(I2C0, data[1]);
+                timeout = 0;
                 
                 /* wait until BTC bit is set */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_BTC) != I2C_RESULT_SUCCESS) {
+                while (!i2c_flag_get(I2C0, I2C_FLAG_BTC) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
@@ -451,13 +413,25 @@ i2c_result_t i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data
                 return I2C_RESULT_SUCCESS;
 
             case I2C_STATE_ERROR:
-                /* I2C bus error, try to reset the bus and retry */
+                /* send a stop condition to I2C bus */
-                i2c_bus_reset();
+                i2c_stop_on_bus(I2C0);
+
+                timeout = 0;
+                while ((I2C_CTL0(I2C0) & I2C_CTL0_STOP) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
+                    return I2C_RESULT_ERROR;
+                }
+
+                i2c_flag_clear(I2C0, I2C_FLAG_AERR);
+                i2c_flag_clear(I2C0, I2C_FLAG_BERR);
+                i2c_flag_clear(I2C0, I2C_FLAG_LOSTARB);
 
                 retry_count ++;
                 if (retry_count >= I2C_MAX_RETRY)
                 {
-#ifdef DEBUG_VERBOSE
+#ifdef DEBUG_VERBOES
                     printf("IIC write failed after %d retries\n", I2C_MAX_RETRY);
 #endif
                     return I2C_RESULT_ERROR;
@@ -498,8 +472,11 @@ i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data
             case I2C_STATE_START:
                 timeout = 0;
 
-                /* wait for bus to be idle */
+                // wait for bus to be idle
-                if(_i2c_wait_flag_clear_timeout(I2C_FLAG_I2CBSY) != I2C_RESULT_SUCCESS) {
+                while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
@@ -507,11 +484,15 @@ i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data
                 // send start condition
                 i2c_start_on_bus(I2C0);
                 state = I2C_STATE_SEND_ADDRESS;
+                timeout = 0;
                 break;
 
             case I2C_STATE_SEND_ADDRESS:
                 /* wait for start condition to be sent  */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_SBSEND) != I2C_RESULT_SUCCESS) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
@@ -559,7 +540,10 @@ i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data
 
             case I2C_STATE_TRANSMIT_DATA:
                 /* wait for transmit buffer to be empty */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
@@ -567,11 +551,15 @@ i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data
                 /* send register address */
                 i2c_data_transmit(I2C0, reg_addr);
                 state = I2C_STATE_RESTART;
+                timeout = 0;
                 break;
 
             case I2C_STATE_RESTART:
                 /* wait for byte transfer complete  BTC: Bit Transfer Complete */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_BTC) != I2C_RESULT_SUCCESS) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
@@ -580,7 +568,11 @@ i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data
                 i2c_start_on_bus(I2C0);
                 
                 /* wait for repeated start condition to be sent */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_SBSEND) != I2C_RESULT_SUCCESS) {
+                timeout = 0;
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
@@ -596,7 +588,10 @@ i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data
 
             case I2C_STATE_RECEIVE_DATA:
                 /* Wait for BTC (both bytes received) */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_BTC) != I2C_RESULT_SUCCESS) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
@@ -626,13 +621,13 @@ i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data
                 return I2C_RESULT_SUCCESS;
 
             case I2C_STATE_ERROR:
-                /* I2C bus error, try to reset the bus and retry */
+                /* send stop condition to release bus */
-                i2c_bus_reset();
+                i2c_stop_on_bus(I2C0);
 
                 retry_count++;
                 if (retry_count >= I2C_MAX_RETRY) {
-#ifdef DEBUG_VERBOSE
+#ifdef DEBUG_VERBOES
-                    printf("IIC read failed after %d retries\n", I2C_MAX_RETRY);
+                    printf("IIC read failed after %d retries\n", I2C_RETRY_MAX);
 #endif
                     return I2C_RESULT_ERROR;
                 }
@@ -657,13 +652,13 @@ i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data
 /*!
     \brief      write data to I2C device with configurable length
     \param[in]  slave_addr: slave device address (7-bit)
-    \param[in]  reg_addr: register address (16-bit, high byte first)
+    \param[in]  reg_addr: register address
     \param[in]  data: pointer to data buffer
     \param[in]  length: number of bytes to write (1-255)
     \param[out] none
     \retval     i2c_result_t: operation result
 */
-i2c_result_t i2c_write(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint8_t length) {
+i2c_result_t i2c_write(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8_t length) {
     i2c_state_t state = I2C_STATE_START;
     uint16_t timeout = 0;
     uint8_t retry_count = 0;
@@ -671,9 +666,6 @@ i2c_result_t i2c_write(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uin
 
     /* parameter validation */
     if (data == NULL || slave_addr > 0x7F || length == 0) {
-#ifdef DEBUG_VERBOSE
-        printf("I2C write invalid param: slave=0x%02X, len=%u, data=%p\r\n", slave_addr, length, data);
-#endif
         return I2C_RESULT_INVALID_PARAM;
     }
 
@@ -727,71 +719,67 @@ i2c_result_t i2c_write(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uin
                     state = I2C_STATE_TRANSMIT_REG;
                     break;
                 } else {
-                    /* NACK received - address not acknowledged */
                     i2c_flag_clear(I2C0, I2C_FLAG_AERR);
-                    i2c_stop_on_bus(I2C0);
                     timeout = 0;
 #ifdef DEBUG_VERBOSE
-                    printf("I2C write failed for Error Slave Address. \n");
+                    printf("IIC write failed for Error Slave Address. \n");
 #endif
                     return I2C_RESULT_NACK;
                 }
 
             case I2C_STATE_TRANSMIT_REG:
                 /* wait until the transmit data buffer is empty */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
 
-                /* send register address, high byte first */
+                /* send register address */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
+                i2c_data_transmit(I2C0, reg_addr);
-                    state = I2C_STATE_ERROR;
+                timeout = 0;
-                    break;
-                }
-                i2c_data_transmit(I2C0, (uint8_t)(reg_addr >> 8));
-
-                if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
-                    state = I2C_STATE_ERROR;
-                    break;
-                }
-                i2c_data_transmit(I2C0, (uint8_t)(reg_addr & 0xFF));
                 state = I2C_STATE_TRANSMIT_DATA;
                 break;
 
             case I2C_STATE_TRANSMIT_DATA:
                 /* wait until the transmit data buffer is empty */
-                while (data_index < length) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
-                    if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
+                    timeout++;
-                        state = I2C_STATE_ERROR;
+                }
-                        break;
+                if (timeout >= I2C_TIME_OUT) {
-                    }
+                    state = I2C_STATE_ERROR;
-
+                    break;
-                    /* send data byte */
-                    i2c_data_transmit(I2C0, data[data_index]);
-                    data_index++;
-
-                    /* check for errors */
-                    if (i2c_flag_get(I2C0, I2C_FLAG_AERR)) {
-                        i2c_stop_on_bus(I2C0);
-                        return I2C_RESULT_NACK;
-                    } else if (i2c_flag_get(I2C0, I2C_FLAG_BERR) || i2c_flag_get(I2C0, I2C_FLAG_LOSTARB)) {
-                        i2c_stop_on_bus(I2C0);
-                        return I2C_RESULT_ERROR;
-                    }
                 }
-                if(state == I2C_STATE_ERROR) break;
 
+                /* send data byte */
+                i2c_data_transmit(I2C0, data[data_index]);
+                data_index++;
+
+                /* check for errors */
+                if (i2c_flag_get(I2C0, I2C_FLAG_AERR)) {
+                    i2c_stop_on_bus(I2C0);
+                    return I2C_RESULT_NACK;
+                } else if (i2c_flag_get(I2C0, I2C_FLAG_BERR) || i2c_flag_get(I2C0, I2C_FLAG_LOSTARB)) {
+                    i2c_stop_on_bus(I2C0);
+                    return I2C_RESULT_ERROR;
+                }
 
                 /* check if all data has been sent */
                 if (data_index >= length) {
                     /* wait until BTC bit is set for last byte */
-                    if(_i2c_wait_flag_timeout(I2C_FLAG_BTC) != I2C_RESULT_SUCCESS) {
+                    timeout = 0;
+                    while (!i2c_flag_get(I2C0, I2C_FLAG_BTC) && (timeout < I2C_TIME_OUT)) {
+                        timeout++;
+                    }
+                    if (timeout >= I2C_TIME_OUT) {
                         state = I2C_STATE_ERROR;
                         break;
                     }
                     state = I2C_STATE_STOP;
                 }
+                timeout = 0;
                 break;
 
             case I2C_STATE_STOP:
@@ -811,8 +799,17 @@ i2c_result_t i2c_write(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uin
                 return I2C_RESULT_SUCCESS;
 
             case I2C_STATE_ERROR:
-                /* I2C bus error, try to reset the bus and retry */
+                /* send a stop condition to I2C bus */
-                i2c_bus_reset();
+                i2c_stop_on_bus(I2C0);
+
+                timeout = 0;
+                while ((I2C_CTL0(I2C0) & I2C_CTL0_STOP) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+
+                i2c_flag_clear(I2C0, I2C_FLAG_AERR);
+                i2c_flag_clear(I2C0, I2C_FLAG_BERR);
+                i2c_flag_clear(I2C0, I2C_FLAG_LOSTARB);
 
                 retry_count++;
                 if (retry_count >= I2C_MAX_RETRY) {
@@ -841,12 +838,12 @@ i2c_result_t i2c_write(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uin
 /*!
     \brief      read data from I2C device with configurable length
     \param[in]  slave_addr: slave device address (7-bit)
-    \param[in]  reg_addr: register address (16-bit, high byte first)
+    \param[in]  reg_addr: register address
     \param[out] data: pointer to data buffer
     \param[in]  length: number of bytes to read (1-255)
     \retval     i2c_result_t: operation result
 */
-i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint8_t length) {
+i2c_result_t i2c_read(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8_t length) {
     i2c_state_t state = I2C_STATE_START;
     uint16_t timeout = 0;
     uint8_t retry_count = 0;
@@ -861,10 +858,6 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint
     /* enable acknowledge */
     i2c_ack_config(I2C0, I2C_ACK_ENABLE);
 
-#ifdef DEBUG_VERBOSE
-    printf("I2C read start: slave=0x%02X reg=0x%02X len=%u\r\n", slave_addr, reg_addr, length);
-#endif
-
     while (retry_count < (uint8_t)I2C_MAX_RETRY) {
         switch (state) {
             case I2C_STATE_START:
@@ -872,7 +865,10 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint
                 data_index = 0;
 
                 /* wait for bus to be idle */
-                if(_i2c_wait_flag_clear_timeout(I2C_FLAG_I2CBSY) != I2C_RESULT_SUCCESS) {
+                while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
@@ -880,11 +876,15 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint
                 /* send start condition */
                 i2c_start_on_bus(I2C0);
                 state = I2C_STATE_SEND_ADDRESS;
+                timeout = 0;
                 break;
 
             case I2C_STATE_SEND_ADDRESS:
                 /* wait for start condition to be sent */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_SBSEND) != I2C_RESULT_SUCCESS) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
@@ -912,92 +912,67 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint
                     break;
                 }
 
-                /* debug: show address ack and error flags */
-#ifdef DEBUG_VERBOSE
-                printf("I2C CLEAR_ADDRESS: write_phase=%d ADDSEND=%d AERR=%d\r\n",
-                       (int)write_phase,
-                       (int)i2c_flag_get(I2C0, I2C_FLAG_ADDSEND),
-                       (int)i2c_flag_get(I2C0, I2C_FLAG_AERR));
-#endif
-
                 if (write_phase) {
                     /* clear address flag (write phase) */
                     i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
                     state = I2C_STATE_TRANSMIT_DATA;
                 } else {
-                    /* READ phase: handle ACK/ACKPOS based on requested length
+                    /* read phase setup based on length */
-                       - length == 1: disable ACK before clearing ADDR
-                       - length == 2: set ACKPOS_NEXT and disable ACK before clearing ADDR
-                       - length > 2: keep ACK enabled and clear ADDR; we'll handle N-2/BTF sequence later */
                     if (length == 1) {
+                        /* single byte read: disable ACK before clearing ADDR */
                         i2c_ack_config(I2C0, I2C_ACK_DISABLE);
-#ifdef DEBUG_VERBOSE
+                        i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
-                        printf("I2C READ phase: length=1, disabling ACK before clearing ADDSEND\r\n");
+                        /* send STOP immediately after clearing ADDR for single byte */
-#endif
+                        i2c_stop_on_bus(I2C0);
                     } else if (length == 2) {
+                        /* two bytes read: set POS=NEXT and disable ACK before clearing ADDR */
                         i2c_ackpos_config(I2C0, I2C_ACKPOS_NEXT);
                         i2c_ack_config(I2C0, I2C_ACK_DISABLE);
-#ifdef DEBUG_VERBOSE
+                        i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
-                        printf("I2C READ phase: length=2, set ACKPOS_NEXT and disabling ACK before clearing ADDSEND\r\n");
-#endif
                     } else {
-                        /* length > 2: keep ACK enabled so slave will clock out data */
+                        /* multi-byte read: clear ADDR with ACK enabled */
-                        i2c_ack_config(I2C0, I2C_ACK_ENABLE);
+                        i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
-#ifdef DEBUG_VERBOSE
-                        printf("I2C READ phase: length=%u (>2), keeping ACK enabled\r\n", length);
-#endif
                     }
-
-                    /* now clear address flag to release SCL and enter data phase */
-                    i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
-
                     state = I2C_STATE_RECEIVE_DATA;
                 }
-
                 timeout = 0;
                 break;
 
             case I2C_STATE_TRANSMIT_DATA:
                 /* wait for transmit buffer to be empty */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
 
-                /* send register address, high byte first */
+                /* send register address */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
+                i2c_data_transmit(I2C0, reg_addr);
-                    state = I2C_STATE_ERROR;
-                    break;
-                }
-                i2c_data_transmit(I2C0, (uint8_t)(reg_addr >> 8));
-
-                if(_i2c_wait_flag_timeout(I2C_FLAG_TBE) != I2C_RESULT_SUCCESS) {
-                    state = I2C_STATE_ERROR;
-                    break;
-                }
-                i2c_data_transmit(I2C0, (uint8_t)(reg_addr & 0xFF));
                 state = I2C_STATE_RESTART;
+                timeout = 0;
                 break;
 
             case I2C_STATE_RESTART:
                 /* wait for byte transfer complete */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_BTC) != I2C_RESULT_SUCCESS) {
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
 
-#ifdef DEBUG_VERBOSE
-                printf("I2C RESTART: after BTC, delay 5ms and issuing repeated START\r\n");
-#endif
-                /* small delay to allow slave device to prepare multi-byte data before repeated start */
-                /* increased to 5ms to improve reliability for DLPC multi-byte reads */
-                delay_ms(5);
-
                 /* generate repeated start condition */
                 i2c_start_on_bus(I2C0);
                 
                 /* wait for repeated start condition to be sent */
-                if(_i2c_wait_flag_timeout(I2C_FLAG_SBSEND) != I2C_RESULT_SUCCESS) {
+                timeout = 0;
+                while ((!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) && (timeout < I2C_TIME_OUT)) {
+                    timeout++;
+                }
+                if (timeout >= I2C_TIME_OUT) {
                     state = I2C_STATE_ERROR;
                     break;
                 }
@@ -1009,18 +984,15 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint
                 write_phase = false;
                 state = I2C_STATE_CLEAR_ADDRESS;
                 timeout = 0;
-#ifdef DEBUG_VERBOSE
-                printf("I2C addressing sent for read (slave=0x%02X)\r\n", slave_addr);
-#endif
                 break;
 
             case I2C_STATE_RECEIVE_DATA:
-#ifdef DEBUG_VERBOSE
-                printf("I2C RECEIVE_DATA: expecting %u bytes\r\n", length);
-#endif
                 if (length == 1) {
                     /* single byte read */
-                    if(_i2c_wait_flag_timeout(I2C_FLAG_RBNE) != I2C_RESULT_SUCCESS) {
+                    while ((!i2c_flag_get(I2C0, I2C_FLAG_RBNE)) && (timeout < I2C_TIME_OUT)) {
+                        timeout++;
+                    }
+                    if (timeout >= I2C_TIME_OUT) {
                         state = I2C_STATE_ERROR;
                         break;
                     }
@@ -1028,7 +1000,10 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint
                     state = I2C_STATE_STOP;
                 } else if (length == 2) {
                     /* two bytes read */
-                    if(_i2c_wait_flag_timeout(I2C_FLAG_BTC) != I2C_RESULT_SUCCESS) {
+                    while ((!i2c_flag_get(I2C0, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
+                        timeout++;
+                    }
+                    if (timeout >= I2C_TIME_OUT) {
                         state = I2C_STATE_ERROR;
                         break;
                     }
@@ -1041,39 +1016,40 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint
                 } else {
                     /* multi-byte read (length > 2) */
                     while (data_index < length) {
-                        if (data_index < length - 2) {
+                        /* wait for RBNE (receive buffer not empty) */
-                            /* normal bytes: wait for RBNE and read with ACK */
+                        while ((!i2c_flag_get(I2C0, I2C_FLAG_RBNE)) && (timeout < I2C_TIME_OUT)) {
-                            if(_i2c_wait_flag_timeout(I2C_FLAG_RBNE) != I2C_RESULT_SUCCESS) {
+                            timeout++;
-                                state = I2C_STATE_ERROR;
-                                break;
-                            }
-                            data[data_index] = i2c_data_receive(I2C0);
-                            data_index++;
-                        } else if (data_index == length - 2) {
-                            /* second to last byte: wait for BTF, then disable ACK and read */
-                            if(_i2c_wait_flag_timeout(I2C_FLAG_BTC) != I2C_RESULT_SUCCESS) {
-                                state = I2C_STATE_ERROR;
-                                break;
-                            }
-                            /* disable ACK before reading N-1 byte */
-                            i2c_ack_config(I2C0, I2C_ACK_DISABLE);
-                            /* send STOP before reading N-1 byte */
-                            i2c_stop_on_bus(I2C0);
-                            /* read N-1 byte */
-                            data[data_index] = i2c_data_receive(I2C0);
-                            data_index++;
-                        } else {
-                            /* last byte: wait for RBNE and read */
-                            if(_i2c_wait_flag_timeout(I2C_FLAG_RBNE) != I2C_RESULT_SUCCESS) {
-                                state = I2C_STATE_ERROR;
-                                break;
-                            }
-                            /* read last byte */
-                            data[data_index] = i2c_data_receive(I2C0);
-                            data_index++;
                         }
+                        if (timeout >= I2C_TIME_OUT) {
+                            state = I2C_STATE_ERROR;
+                            break;
+                        }
+
+                        /* special handling for last 3 bytes */
+                        if (data_index == length - 3) {
+                            /* wait for BTF (byte transfer finished) before reading N-2 */
+                            while ((!i2c_flag_get(I2C0, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
+                                timeout++;
+                            }
+                            if (timeout >= I2C_TIME_OUT) {
+                                state = I2C_STATE_ERROR;
+                                break;
+                            }
+                            /* disable ACK for last 2 bytes */
+                            i2c_ack_config(I2C0, I2C_ACK_DISABLE);
+                        }
+
+                        /* read data byte */
+                        data[data_index] = i2c_data_receive(I2C0);
+                        data_index++;
+
+                        /* send STOP after reading N-1 byte */
+                        if (data_index == length - 1) {
+                            i2c_stop_on_bus(I2C0);
+                        }
+
+                        timeout = 0;
                     }
-                    if(state == I2C_STATE_ERROR) break;
                     state = I2C_STATE_STOP;
                 }
                 break;
@@ -1096,11 +1072,8 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint
                 return I2C_RESULT_SUCCESS;
 
             case I2C_STATE_ERROR:
-                /* I2C bus error, try to reset the bus and retry */
+                /* send stop condition to release bus */
-#ifdef DEBUG_VERBOSE
+                i2c_stop_on_bus(I2C0);
-                printf("I2C_STATE_ERROR: resetting bus and retrying (retry_count=%u)\r\n", retry_count);
-#endif
-                i2c_bus_reset();
 
                 /* reset ACK configuration */
                 i2c_ack_config(I2C0, I2C_ACK_ENABLE);
@@ -1109,13 +1082,7 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint
                 retry_count++;
                 if (retry_count >= I2C_MAX_RETRY) {
 #ifdef DEBUG_VERBOSE
-                    /* Print diagnostic flags to help root-cause analysis */
+                    printf("I2C read failed after %d retries\n", I2C_MAX_RETRY);
-                    printf("I2C read final failure after %d retries, last_state=%d\r\n", I2C_MAX_RETRY, state);
-                    printf("  FLAGS: AERR=%d BERR=%d LOSTARB=%d I2CBSY=%d\r\n",
-                           (int)i2c_flag_get(I2C0, I2C_FLAG_AERR),
-                           (int)i2c_flag_get(I2C0, I2C_FLAG_BERR),
-                           (int)i2c_flag_get(I2C0, I2C_FLAG_LOSTARB),
-                           (int)i2c_flag_get(I2C0, I2C_FLAG_I2CBSY));
 #endif
                     return I2C_RESULT_ERROR;
                 }
@@ -1134,179 +1101,39 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint16_t reg_addr, uint8_t *data, uint
                 break;
         }
     }
-    /* timeout path: provide debug info */
-#ifdef DEBUG_VERBOSE
-    printf("I2C read timeout (end state). slave=0x%02X, len=%u\r\n", slave_addr, length);
-    printf("  FLAGS: AERR=%d BERR=%d LOSTARB=%d I2CBSY=%d\r\n",
-           (int)i2c_flag_get(I2C0, I2C_FLAG_AERR),
-           (int)i2c_flag_get(I2C0, I2C_FLAG_BERR),
-           (int)i2c_flag_get(I2C0, I2C_FLAG_LOSTARB),
-           (int)i2c_flag_get(I2C0, I2C_FLAG_I2CBSY));
-#endif
     return I2C_RESULT_TIMEOUT;
 }
 
-/*!
+/* convenience functions for common operations */
-    \brief      read data from I2C device without register/sub-address phase
+i2c_result_t i2c_write_8bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data) {
-    \param[in]  slave_addr: slave device address (7-bit)
+    return i2c_write(slave_addr, reg_addr, &data, 1);
-    \param[out] data: pointer to data buffer
+}
-    \param[in]  length: number of bytes to read (1-255)
-    \retval     i2c_result_t: operation result
-*/
-i2c_result_t i2c_read_raw(uint8_t slave_addr, uint8_t *data, uint8_t length)
-{
-    i2c_state_t state = I2C_STATE_START;
-    uint16_t timeout = 0;
-    uint8_t retry_count = 0;
-    uint8_t data_index = 0;
 
-    if (data == NULL || slave_addr > 0x7F || length == 0) {
+i2c_result_t i2c_read_8bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data) {
+    return i2c_read(slave_addr, reg_addr, data, 1);
+}
+
+i2c_result_t i2c_write_32bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[4]) {
+    return i2c_write(slave_addr, reg_addr, data, 4);
+}
+
+i2c_result_t i2c_read_32bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data) {
+    return i2c_read(slave_addr, reg_addr, data, 4);
+}
+
+/* 显示面板专用函数 - 支持读取显示界面参数 */
+i2c_result_t i2c_read_display_params(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8_t length) {
+    /* 针对显示面板的多字节读取，支持13字节的完整参数读取 */
+    if (length > 13) {
         return I2C_RESULT_INVALID_PARAM;
     }
-
+    return i2c_read(slave_addr, reg_addr, data, length);
-    i2c_ack_config(I2C0, I2C_ACK_ENABLE);
-
-    while (retry_count < (uint8_t)I2C_MAX_RETRY) {
-        switch (state) {
-            case I2C_STATE_START:
-                timeout = 0;
-                data_index = 0;
-
-                if (_i2c_wait_flag_clear_timeout(I2C_FLAG_I2CBSY) != I2C_RESULT_SUCCESS) {
-                    state = I2C_STATE_ERROR;
-                    break;
-                }
-
-                i2c_start_on_bus(I2C0);
-                state = I2C_STATE_SEND_ADDRESS;
-                break;
-
-            case I2C_STATE_SEND_ADDRESS:
-                if (_i2c_wait_flag_timeout(I2C_FLAG_SBSEND) != I2C_RESULT_SUCCESS) {
-                    state = I2C_STATE_ERROR;
-                    break;
-                }
-
-                i2c_master_addressing(I2C0, (slave_addr << 1), I2C_RECEIVER);
-                state = I2C_STATE_CLEAR_ADDRESS;
-                timeout = 0;
-                break;
-
-            case I2C_STATE_CLEAR_ADDRESS:
-                while ((!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND)) && (!i2c_flag_get(I2C0, I2C_FLAG_AERR)) && (timeout < I2C_TIME_OUT)) {
-                    timeout++;
-                }
-                if (timeout >= I2C_TIME_OUT) {
-                    state = I2C_STATE_ERROR;
-                    break;
-                }
-                if (i2c_flag_get(I2C0, I2C_FLAG_AERR)) {
-                    i2c_flag_clear(I2C0, I2C_FLAG_AERR);
-                    i2c_stop_on_bus(I2C0);
-                    return I2C_RESULT_NACK;
-                }
-
-                if (length == 1) {
-                    i2c_ack_config(I2C0, I2C_ACK_DISABLE);
-                } else if (length == 2) {
-                    i2c_ackpos_config(I2C0, I2C_ACKPOS_NEXT);
-                    i2c_ack_config(I2C0, I2C_ACK_DISABLE);
-                } else {
-                    i2c_ack_config(I2C0, I2C_ACK_ENABLE);
-                }
-
-                i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
-                state = I2C_STATE_RECEIVE_DATA;
-                timeout = 0;
-                break;
-
-            case I2C_STATE_RECEIVE_DATA:
-                if (length == 1) {
-                    if (_i2c_wait_flag_timeout(I2C_FLAG_RBNE) != I2C_RESULT_SUCCESS) {
-                        state = I2C_STATE_ERROR;
-                        break;
-                    }
-                    data[0] = i2c_data_receive(I2C0);
-                    state = I2C_STATE_STOP;
-                } else if (length == 2) {
-                    if (_i2c_wait_flag_timeout(I2C_FLAG_BTC) != I2C_RESULT_SUCCESS) {
-                        state = I2C_STATE_ERROR;
-                        break;
-                    }
-                    i2c_stop_on_bus(I2C0);
-                    data[0] = i2c_data_receive(I2C0);
-                    data[1] = i2c_data_receive(I2C0);
-                    state = I2C_STATE_STOP;
-                } else {
-                    while (data_index < length) {
-                        if (data_index < length - 2) {
-                            if (_i2c_wait_flag_timeout(I2C_FLAG_RBNE) != I2C_RESULT_SUCCESS) {
-                                state = I2C_STATE_ERROR;
-                                break;
-                            }
-                            data[data_index++] = i2c_data_receive(I2C0);
-                        } else if (data_index == length - 2) {
-                            if (_i2c_wait_flag_timeout(I2C_FLAG_BTC) != I2C_RESULT_SUCCESS) {
-                                state = I2C_STATE_ERROR;
-                                break;
-                            }
-                            i2c_ack_config(I2C0, I2C_ACK_DISABLE);
-                            i2c_stop_on_bus(I2C0);
-                            data[data_index++] = i2c_data_receive(I2C0);
-                        } else {
-                            if (_i2c_wait_flag_timeout(I2C_FLAG_RBNE) != I2C_RESULT_SUCCESS) {
-                                state = I2C_STATE_ERROR;
-                                break;
-                            }
-                            data[data_index++] = i2c_data_receive(I2C0);
-                        }
-                    }
-                    if (state == I2C_STATE_ERROR) break;
-                    state = I2C_STATE_STOP;
-                }
-                break;
-
-            case I2C_STATE_STOP:
-                while ((I2C_CTL0(I2C0) & I2C_CTL0_STOP) && (timeout < I2C_TIME_OUT)) {
-                    timeout++;
-                }
-                if (timeout >= I2C_TIME_OUT) {
-                    state = I2C_STATE_ERROR;
-                    break;
-                }
-
-                i2c_ack_config(I2C0, I2C_ACK_ENABLE);
-                i2c_ackpos_config(I2C0, I2C_ACKPOS_CURRENT);
-                return I2C_RESULT_SUCCESS;
-
-            case I2C_STATE_ERROR:
-                i2c_bus_reset();
-                i2c_ack_config(I2C0, I2C_ACK_ENABLE);
-                i2c_ackpos_config(I2C0, I2C_ACKPOS_CURRENT);
-
-                retry_count++;
-                if (retry_count >= I2C_MAX_RETRY) {
-                    return I2C_RESULT_ERROR;
-                }
-
-                state = I2C_STATE_START;
-                timeout = 0;
-                delay_10us(10);
-                break;
-
-            default:
-                state = I2C_STATE_START;
-                break;
-        }
-    }
-
-    return I2C_RESULT_TIMEOUT;
 }
 
 #ifdef DEBUG_VERBOSE
 /*!
     \brief      get status string for debugging
-    \param[in]  status: i2c_result_t value
+    \param[in]  status: i2c_status_t value
     \param[out] none
     \retval     const char* status string
 */

Src/ldc1612.c

@@ -148,17 +148,11 @@ ldc1612_status_t ldc1612_init(void) {
 */
 ldc1612_status_t ldc1612_config_single_channel(uint8_t channel) {
     i2c_result_t status;
-    uint16_t freq_divider;
 
     if (channel > 1) {
         return LDC1612_STATUS_INVALID_PARAM;
     }
 
-    freq_divider = ldc1612_calculate_freq_divider(channel);
-    if (freq_divider == 0) {
-        return LDC1612_STATUS_INVALID_PARAM;
-    }
-
     /* 配置顺序严格按照TI官方文档要求 */
     
     /* Step 1: 确保传感器处于睡眠模式 - 配置前必须 */
@@ -167,34 +161,28 @@ ldc1612_status_t ldc1612_config_single_channel(uint8_t channel) {
     delay_ms(10);
 
     /* Step 2: 配置频率分频 - 必须在其他配置之前 */
-    status = ldc1612_write_register(SET_FREQ_REG_START + channel, freq_divider);
+    uint16_t freq_divider = ldc1612_calculate_freq_divider(channel);
-    if (status != I2C_RESULT_SUCCESS) return LDC1612_STATUS_ERROR;
+    ldc1612_write_register(SET_FREQ_REG_START + channel, freq_divider);
     delay_ms(5);
 
     /* Step 3: 配置LC稳定时间 - 影响测量精度 */
-    status = ldc1612_write_register(SET_SETTLECOUNT_REG_START + channel, LDC1612_SETTLECOUNT_CH0);
+    ldc1612_write_register(SET_SETTLECOUNT_REG_START + channel, LDC1612_SETTLECOUNT_CH0);
-    if (status != I2C_RESULT_SUCCESS) return LDC1612_STATUS_ERROR;
 
     /* Step 4: 配置转换时间 - 影响测量速度和精度 */
-    status = ldc1612_write_register(SET_CONVERSION_TIME_REG_START + channel, LDC1612_RCOUNT_TIME_CH0);
+    ldc1612_write_register(SET_CONVERSION_TIME_REG_START + channel, LDC1612_RCOUNT_TIME_CH0);
-    if (status != I2C_RESULT_SUCCESS) return LDC1612_STATUS_ERROR;
 
     /* Step 5: 配置转换偏移 */
-    status = ldc1612_write_register(SET_CONVERSION_OFFSET_REG_START + channel, SET_CONVERSION_OFFSET_CH0);
+    ldc1612_write_register(SET_CONVERSION_OFFSET_REG_START + channel, SET_CONVERSION_OFFSET_CH0);
-    if (status != I2C_RESULT_SUCCESS) return LDC1612_STATUS_ERROR;
 
     /* Step 6: 配置驱动电流 - 影响传感器灵敏度 */
-    status = ldc1612_write_register(SET_DRIVER_CURRENT_REG + channel, LDC1612_DRIVE_CURRENT);
+    ldc1612_write_register(SET_DRIVER_CURRENT_REG + channel, LDC1612_DRIVE_CURRENT);
-    if (status != I2C_RESULT_SUCCESS) return LDC1612_STATUS_ERROR;
 
     /* Step 7: 配置多路复用器 - 设置通道选择和滤波 */
     // ldc1612_configure_mux_register(LDC1612_MUX_AUTOSCAN_DISABLE, LDC1612_MUX_RR_SEQUENCE_0, LDC1612_MUX_FILTER_ALL_LOW, LDC1612_MUX_FILTER_NONE);
-    status = ldc1612_write_register(MUX_CONFIG_REG, LDC1612_MUX_CONFIG);
+    ldc1612_write_register(MUX_CONFIG_REG, LDC1612_MUX_CONFIG);
-    if (status != I2C_RESULT_SUCCESS) return LDC1612_STATUS_ERROR;
 
     /* Step 8: 配置错误输出 */
-    status = ldc1612_write_register(ERROR_CONFIG_REG, LDC1612_ERROR_CONFIG_DEFAULT);
+    ldc1612_write_register(ERROR_CONFIG_REG, LDC1612_ERROR_CONFIG_DEFAULT);
-    if (status != I2C_RESULT_SUCCESS) return LDC1612_STATUS_ERROR;
 
     /* Step 9: 最后启动传感器 - 必须最后一步 */
     status = ldc1612_write_register(SENSOR_CONFIG_REG, LDC1612_SENSOR_CONFIG_CH0);

Src/tmp112.c

@@ -86,7 +86,8 @@ tmp112a_status_t tmp112a_read_temperature(tmp112a_result_t *result) {
 }
 
 void tmp112a_get_raw_temperature_value(uint8_t *value) {
-    i2c_read_16bits(TMP112A_ADDR, TMP112A_TEMP_REG, value);
+    // i2c_read_16bits(TMP112A_ADDR, TMP112A_TEMP_REG, value);
+    i2c_read(TMP112A_ADDR, TMP112A_TEMP_REG, value, 2);
     return;
 }
 

cmake/project_config.cmake

@@ -1,11 +1,12 @@
 # Project basic info
-# golden 出厂保底线：版本号冻结 V1.0.2（保底判定值 v26.1.0.2，永不再用于 OTA 升级包）
+# golden 出厂保底线：生产实装版原样复制（GitLab ceramixnano_eddy_cmake_vscode dev@151828f，v26.1.0.3，2026-10-25）
+# 保底判定值 = M999 返回 v26.1.0.3 ⇔ 在跑 FW_B；v26.1.0.2（旧 golden）与 v26.1.0.3 均永不再用于 OTA 升级包版本
 # 此分支改动不得合回 dev/main（链接基址 0x0800B000 为 B 槽专属）
 set(PROJECT_NAME "CeramixNano-EDDY")
 set(BOARD_TYPE_CODE 26)
 set(VERSION_MAJOR 1)
 set(VERSION_MINOR 0)
-set(VERSION_PATCH 2)
+set(VERSION_PATCH 3)
 set(VERSION "V${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
 string(TIMESTAMP BUILD_DATE "%Y-%m-%d")