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

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]  length: number of bytes to read (1-255)
+    \param[in]  reg_addr: register address
+    \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)***********************************/