/*
 * usart_biz.c
 *
 *  Created on: 2026-02-26
 *      Author: wangfq
 *  Updated:   2026-07-02 — 使用 loop_uart_proto 帧解析器替代 timeout heuristic
 */

#include "config.h"
#include "cmcng.h"
#include "debug.h"   /* DEBUG 宏: 4G 版本以 -DDEBUG=0 编译, 此时 printf 不占用 USART1 */
#include "loop_uart_proto.h"
#include <string.h>
#include "dbn_ble_srv.h"
#include "ota_srv.h"

void USART1_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void USART2_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));


/*==================== UART2 RX DMA (2026-08-17 方案A) ====================
 * 根因: PRINT 临界区(关中断 ~7.4ms)期间 USART2 RXNE 中断被屏蔽 → 丢字节 → checksum fail
 * 方案: DMA1_Ch6 循环模式硬件收字节 (不依赖 CPU 中断), 主循环轮询消费
 *  - 512B 环形缓冲: 能装 ~7 帧 (70B), 覆盖主循环长阻塞窗口 (SPI 擦除 45ms)
 *  - 无新增中断 (关 RXNE, DMA 硬件接管) → 无优先级冲突; WCHNET 用独立 ETH DMA,
 *    BLE 栈不用 DMA1 → Ch6 独占无冲突
 *  - lup_feed_byte 状态机移入主循环 (原中断上下文) → 无中断竞争更安全
 *======================================================================*/
#define UART2_DMA_BUF_LEN   512
static uint8_t uart2_dma_buf[UART2_DMA_BUF_LEN] __attribute__((aligned(4)));
static uint16_t uart2_dma_last = 0;    /* 主循环消费位置 (DMA 写指针由硬件维护) */
static uint32_t uart2_dma_drop = 0;    /* 溢出丢弃计数 (主循环消费不及时) */
static uint8_t  uart2_dma_ota_mode = 0xFF;  /* 上次 OTA 模式 (0xFF=未初始化, 首轮强制 reset) */

void uart2_dma_init(void)
{
    DMA_InitTypeDef DMA_InitStructure;

    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

    DMA_DeInit(DMA1_Channel6);
    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&USART2->DATAR);
    DMA_InitStructure.DMA_MemoryBaseAddr      = (uint32_t)uart2_dma_buf;
    DMA_InitStructure.DMA_DIR                 = DMA_DIR_PeripheralSRC;
    DMA_InitStructure.DMA_BufferSize          = UART2_DMA_BUF_LEN;
    DMA_InitStructure.DMA_PeripheralInc       = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_MemoryInc           = DMA_MemoryInc_Enable;
    DMA_InitStructure.DMA_PeripheralDataSize  = DMA_PeripheralDataSize_Byte;
    DMA_InitStructure.DMA_MemoryDataSize      = DMA_MemoryDataSize_Byte;
    DMA_InitStructure.DMA_Mode                = DMA_Mode_Circular;
    DMA_InitStructure.DMA_Priority            = DMA_Priority_High;
    DMA_InitStructure.DMA_M2M                 = DMA_M2M_Disable;
    DMA_Init(DMA1_Channel6, &DMA_InitStructure);

    /* DMA 接管 USART2 RX: 硬件收字节, 打印关中断不丢 */
    USART_DMACmd(USART2, USART_DMAReq_Rx, ENABLE);
    DMA_Cmd(DMA1_Channel6, ENABLE);

    /* 关闭 RXNE 中断 (DMA 接管后逐字节中断不再需要) */
    USART_ITConfig(USART2, USART_IT_RXNE, DISABLE);

    uart2_dma_last = 0;
}

/* 主循环每轮调用: 消费 DMA 环形缓冲新字节 → 批量喂 lup_feed_byte 状态机 */
void uart2_dma_poll(void)
{
    uint16_t cur = (uint16_t)(UART2_DMA_BUF_LEN - DMA_GetCurrDataCounter(DMA1_Channel6));
    uint16_t n   = (uint16_t)((cur + UART2_DMA_BUF_LEN - uart2_dma_last) & (UART2_DMA_BUF_LEN - 1));

    if (n == 0) return;

    /* 溢出保护: 未消费 > 半缓冲 (256B) → 消费太慢被 DMA 覆盖, 重置解析器丢帧计数
       2026-08-19: OTA 模式下 0x9F ACK 帧仅 7B, 停等协议同一时刻 Loop 至多回 1 帧,
       放宽阈值到整缓冲 — 256B 阈值在 TX 阻塞窗口可能误杀 ACK */
    {
        uint16_t drop_thr = g_flag_counter_ota.flag ? UART2_DMA_BUF_LEN : (UART2_DMA_BUF_LEN / 2);
        if (n > drop_thr) {
            uart2_dma_drop++;
            lup_frame_reset();
            uart2_dma_last = cur;
            return;
        }
    }

    /* OTA 模式切换 (0x7F ↔ 0x9F) 时重置帧解析器, 防旧模式残留状态污染 */
    if (g_flag_counter_ota.flag != uart2_dma_ota_mode) {
        lup_frame_reset();
        uart2_dma_ota_mode = g_flag_counter_ota.flag;
    }

    while (n--) {
        uint8_t b = uart2_dma_buf[uart2_dma_last];
        uart2_dma_last = (uint16_t)((uart2_dma_last + 1) & (UART2_DMA_BUF_LEN - 1));

        /* OTA 模式走 0x9F 帧解析 (bootloader 的 pre_ok/addr_ok/data ACK),
           非 OTA 保持 0x7F 协议解析 */
        int done = g_flag_counter_ota.flag ? lup_feed_byte_ota(b) : lup_feed_byte(b);
        if (done) {
            /* 帧接收完成 → 复制到 g_pkg_uart_2 (与中断版同逻辑, 主循环无竞争) */
            const uint8_t *frame = lup_frame_data();
            uint16_t frame_len = lup_frame_len();
            if (frame_len <= BUFF_STACK_SIZE) {
                memcpy(g_pkg_uart_2.pkg, frame, frame_len);
                g_pkg_uart_2.offset = frame_len;
                g_pkg_uart_2.flag   = 1;
                g_pkg_uart_2.tick   = 0;
            }
            lup_frame_reset();
        } else if (g_lup_parser.state != LUP_FRAME_STATE_IDLE) {
            /* 收帧中 → tick 归零 (对齐中断版行为, 防 TIM3 半帧兜底误判) */
            g_pkg_uart_2.tick = 0;
        }
    }
}


/*==================== UART1 <-> Air780 4G 通道 (协议 §6.1) ====================
 * 定位: 4G 通道中 vd960DBN 只做"字节流透传", 零业务转换 ——
 *   上行: Loop 0x7F 帧(UART2) --校验通过后原样转发--> UART1 --> Air780 解析转 JSON
 *   下行: Air780 帧(UART1) --魔数分流--> 0x7F: 转发 UART2(给 vd960Loop)
 *                                       0x8F: DBN 本地处理
 *
 * 硬约束:
 *   1) 只转发 lup_verify_checksum() 通过的完整帧。Air780 侧靠 loop_state 变化沿判车,
 *      转发一个残缺帧 = 凭空多判一台车。
 *   2) 接收必须走 DMA (与 UART2 方案A 同理): PRINT 临界区 / BLE 栈回调 / SPI 擦除等
 *      长阻塞窗口会屏蔽 RXNE 中断 -> 丢字节 -> 校验失败。本通道"不丢帧"是硬要求。
 *   3) 帧装配器独立于 g_lup_parser: 后者专供 UART2(Loop) 通道, 两条流的字节绝不能
 *      混进同一个状态机 (混了就是互相残杀)。
 *
 * 帧格式 (与 Loop/BLE 协议完全一致):
 *   [7F][Addr][LEN][CMD][Value: LEN-1B][XOR][SUM]      总长 = LEN + 5
 *   校验覆盖 Addr..Value (不含 magic), 复用 lup_verify_checksum()
 *
 * 编译开关:
 *   调试版 (DEBUG != 0): printf 占用 USART1/PB6, 本通道不参与编译 -> 走空实现
 *   4G  版 (DEBUG == 0): -DDEBUG=0 编译即自动启用 (PB6/PB7 由本文件接管)
 *   亦可 -DUART1_AIR780_EN=1/0 强制覆盖
 *===========================================================================*/
#ifndef UART1_AIR780_EN
#define UART1_AIR780_EN   (DEBUG == 0)
#endif

#define UART1_MAGIC_LOOP     LUP_MAGIC   /* 0x7F: 转发给 vd960Loop */
#define UART1_MAGIC_LOCAL    0x8F        /* 0x8F: DBN 本地处理 (BLE 侧同名魔数) */
#define UART1_DMA_BUF_LEN    512

#if (UART1_AIR780_EN)

static uint8_t  uart1_dma_buf[UART1_DMA_BUF_LEN] __attribute__((aligned(4)));
static uint16_t uart1_dma_last = 0;      /* 主循环消费位置 (DMA 写指针由硬件维护) */

/* 下行帧装配器 (独立实例, 不与 g_lup_parser 共享) */
static uint8_t  uart1_rx_frame[LUP_MAX_PKG_LEN];
static uint16_t uart1_rx_idx  = 0;       /* 已收字节数 */
static uint16_t uart1_rx_need = 0;       /* 本帧总长, 0 = 尚未定长 */

/* 通道计数: 现场核对"上行转发数 == Air780 实收数", 比翻日志可靠 */
uint32_t g_uart1_fwd_to_air  = 0;        /* 上行: UART2 -> UART1 转发帧数 */
uint32_t g_uart1_fwd_to_loop = 0;        /* 下行: UART1 -> UART2 转发帧数 */
uint32_t g_uart1_local_cnt   = 0;        /* 下行: 本地处理帧数 (0x8F) */
uint32_t g_uart1_badchk      = 0;        /* 下行: 校验失败帧数 */
uint32_t g_uart1_drop        = 0;        /* 下行: DMA 溢出丢弃次数 */

/* ---- 下行分流 ---- */
static void uart1_dispatch_frame(uint8_t *pkg, uint16_t len)
{
    if (pkg[0] == UART1_MAGIC_LOOP) {
        /* 0x7F -> 原样转发给 vd960Loop */
        g_uart1_fwd_to_loop++;
        UART2_SendString(pkg, len);
    } else {
        /* 0x8F -> DBN 本地处理 (预留: 具体行为待协议细化, 先只计数) */
        g_uart1_local_cnt++;
    }
}

/* ---- 坏帧回找魔数: 把 [1..len) 里第一个魔数起的残余搬到头部继续装配 ----
 * 防"单帧损坏 -> 后续帧全部失步" */
static void uart1_resync(const uint8_t *buf, uint16_t len)
{
    uint16_t i;
    for (i = 1; i < len; i++) {
        if (buf[i] == UART1_MAGIC_LOOP || buf[i] == UART1_MAGIC_LOCAL) {
            uint16_t k, n = 0;
            for (k = i; k < len; k++) {
                uart1_rx_frame[n++] = buf[k];
            }
            uart1_rx_idx  = n;
            uart1_rx_need = 0;
            if (n >= 3) {
                uint8_t  lf   = uart1_rx_frame[2];
                uint16_t need = (uint16_t)lf + 5;
                if (lf >= 1 && need <= LUP_MAX_PKG_LEN) {
                    uart1_rx_need = need;
                } else {
                    uart1_rx_idx = 0;        /* LEN 非法: 残余作废 */
                }
            }
            return;
        }
    }
    /* 残余中没有魔数 -> 全部丢弃 */
}

/* ---- 定长收满 -> 校验 -> 分流 ---- */
static void uart1_frame_ready(void)
{
    uint16_t len = uart1_rx_idx;
    uart1_rx_idx  = 0;
    uart1_rx_need = 0;
    if (lup_verify_checksum(uart1_rx_frame, len) == 0) {
        uart1_dispatch_frame(uart1_rx_frame, len);
    } else {
        g_uart1_badchk++;
        uart1_resync(uart1_rx_frame, len);
    }
}

/* ---- UART1 字节流装配 ---- */
static void uart1_feed_byte(uint8_t b)
{
    uint8_t guard = 0;

    if (uart1_rx_idx == 0) {
        if (b == UART1_MAGIC_LOOP || b == UART1_MAGIC_LOCAL) {
            uart1_rx_frame[0] = b;
            uart1_rx_idx = 1;
        }
        return;                              /* 非魔数字节: 帧间空闲, 直接丢 */
    }

    if (uart1_rx_idx >= LUP_MAX_PKG_LEN) {   /* 防御: 正常流程到不了 */
        uart1_rx_idx  = 0;
        uart1_rx_need = 0;
        return;
    }

    uart1_rx_frame[uart1_rx_idx++] = b;

    if (uart1_rx_idx == 3) {                 /* [7F][Addr][LEN] 到手 -> 定长 */
        uint8_t  lf   = uart1_rx_frame[2];
        uint16_t need = (uint16_t)lf + 5;
        if (lf < 1 || need > LUP_MAX_PKG_LEN) {
            uart1_rx_idx  = 0;               /* LEN 非法 -> 重新找魔数 */
            uart1_rx_need = 0;
            return;
        }
        uart1_rx_need = need;
    }

    /* 校验失败后 resync 可能让残余已够长, 故用 while (guard 防跑飞) */
    while (uart1_rx_need != 0 && uart1_rx_idx >= uart1_rx_need && guard++ < 8) {
        uart1_frame_ready();
    }
}

void uart1_dma_init(void)
{
    GPIO_InitTypeDef  GPIO_InitStructure  = {0};
    USART_InitTypeDef USART_InitStructure = {0};
    DMA_InitTypeDef   DMA_InitStructure;

    /* PB6 = USART1_TX / PB7 = USART1_RX (USART1 重映射) */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

    GPIO_PinRemapConfig(GPIO_Remap_USART1, ENABLE);

    GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_6;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP;          /* Tx */
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_7;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;     /* Rx */
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    USART_InitStructure.USART_BaudRate            = 115200;   /* 与 Air780 侧 uart1 一致 */
    USART_InitStructure.USART_WordLength          = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits            = USART_StopBits_1;
    USART_InitStructure.USART_Parity              = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode                = USART_Mode_Tx | USART_Mode_Rx;
    USART_Init(USART1, &USART_InitStructure);
    USART_Cmd(USART1, ENABLE);

    /* RX 用 DMA1_Ch5 循环缓冲 (UART2 占用 Ch6/Ch7, 通道不冲突) */
    DMA_DeInit(DMA1_Channel5);
    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&USART1->DATAR);
    DMA_InitStructure.DMA_MemoryBaseAddr     = (uint32_t)uart1_dma_buf;
    DMA_InitStructure.DMA_DIR                = DMA_DIR_PeripheralSRC;
    DMA_InitStructure.DMA_BufferSize         = UART1_DMA_BUF_LEN;
    DMA_InitStructure.DMA_PeripheralInc      = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_MemoryInc          = DMA_MemoryInc_Enable;
    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
    DMA_InitStructure.DMA_MemoryDataSize     = DMA_MemoryDataSize_Byte;
    DMA_InitStructure.DMA_Mode               = DMA_Mode_Circular;
    DMA_InitStructure.DMA_Priority           = DMA_Priority_High;
    DMA_InitStructure.DMA_M2M                = DMA_M2M_Disable;
    DMA_Init(DMA1_Channel5, &DMA_InitStructure);

    USART_DMACmd(USART1, USART_DMAReq_Rx, ENABLE);
    DMA_Cmd(DMA1_Channel5, ENABLE);
    USART_ITConfig(USART1, USART_IT_RXNE, DISABLE);   /* DMA 接管, 逐字节中断不再需要 */

    uart1_dma_last = 0;
    uart1_rx_idx   = 0;
    uart1_rx_need  = 0;
}

/* 主循环每轮调用: 消费 DMA 环形缓冲新字节 -> 装配 -> 分流 */
void uart1_dma_poll(void)
{
    uint16_t cur = (uint16_t)(UART1_DMA_BUF_LEN - DMA_GetCurrDataCounter(DMA1_Channel5));
    uint16_t n   = (uint16_t)((cur + UART1_DMA_BUF_LEN - uart1_dma_last) & (UART1_DMA_BUF_LEN - 1));

    if (n == 0) return;

    /* 溢出保护: 未消费超过半缓冲 -> 已被 DMA 覆盖, 复位装配器重同步 */
    if (n > (UART1_DMA_BUF_LEN / 2)) {
        g_uart1_drop++;
        uart1_rx_idx   = 0;
        uart1_rx_need  = 0;
        uart1_dma_last = cur;
        return;
    }

    while (n--) {
        uint8_t b = uart1_dma_buf[uart1_dma_last];
        uart1_dma_last = (uint16_t)((uart1_dma_last + 1) & (UART1_DMA_BUF_LEN - 1));
        uart1_feed_byte(b);
    }
}

#else   /* !UART1_AIR780_EN: 调试版 printf 占用 USART1 -> 空实现, 保证链接一致 */

void uart1_dma_init(void) { }
void uart1_dma_poll(void) { }
uint32_t g_uart1_fwd_to_air  = 0;
uint32_t g_uart1_fwd_to_loop = 0;
uint32_t g_uart1_local_cnt   = 0;
uint32_t g_uart1_badchk      = 0;
uint32_t g_uart1_drop        = 0;

#endif /* UART1_AIR780_EN */

void uart_init(void){
    GPIO_InitTypeDef  GPIO_InitStructure = {0};
    USART_InitTypeDef USART_InitStructure = {0};
    NVIC_InitTypeDef  NVIC_InitStructure  = {0};

    // usart1 : peripheral / DEBUG


    //usart2 :loop mcu
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;         // Tx
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;   // Rx
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    USART_InitStructure.USART_BaudRate            = 192000;  // Loop MCU 实际波特率
    USART_InitStructure.USART_WordLength          = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits            = USART_StopBits_1;
    USART_InitStructure.USART_Parity              = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode                = USART_Mode_Tx | USART_Mode_Rx;

    USART_Init(USART2, &USART_InitStructure);
    /* RXNE 中断由 uart2_dma_init 关闭 (DMA 接管, 2026-08-17) */

    NVIC_InitStructure.NVIC_IRQChannel                   = USART2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority        = 1;
    NVIC_InitStructure.NVIC_IRQChannelCmd                = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    USART_Cmd(USART2, ENABLE);

    uart2_dma_init();   /* DMA 循环接收接管 (2026-08-17) */
    uart1_dma_init();   /* 4G 通道 UART1↔Air780 初始化 (协议 §6.1); DEBUG!=0 时为空实现 */


    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // 初始化帧解析器
    lup_frame_reset();

}



/*********************************************************************
 * @fn      USART1_IRQHandler
 *
 * @brief   This function handles USART1 global interrupt request.
 *
 * @return  none
 */
void USART1_IRQHandler(void)
{

}


/*********************************************************************
 * @fn      USART2_IRQHandler
 *
 * @brief   USART2 RX — 使用 lup_feed_byte() 帧解析器
 *          当解析出完整帧时，复制到 g_pkg_uart_2.pkg 并设置 flag
 *
 * @return  none
 */
void USART2_IRQHandler(void)
{
    /* 2026-08-17: RXNE 中断已关 (DMA 接管), 本 handler 不再触发。
       保留空函数 + IDLE 中断注释: 若后续需要帧边界辅助, 在此加
       USART_IT_IDLE 处理 (读 SR + 读 DR 清标志, 置标志由主循环消费)。 */
}


void UART2_SendString(uint8_t *buf, uint16_t len)
{
    uint16_t _len = len;
    while(_len){
        while(USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);
        USART_SendData(USART2, *buf++);
        _len--;
    }
    while(USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);
}

void UART1_SendString(uint8_t *buf, uint16_t len)
{
    uint16_t _len = len;
    while(_len){
        while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
        USART_SendData(USART1, *buf++);
        _len--;
    }
}


/*
 * uart_srv — 主循环中调用，处理已接收完整的 UART2 帧
 *
 * 处理流程:
 *  1. 0x7F + 0xC0/0x0C → 传感器数据上报
 *     - 若无 BLE 连接 → 标记 `_report_flag`，在 TCP JSON 中处理
 *     - 若有 BLE 连接且 acs_enable → 转 0x8F 前缀发给 BLE
 *  2. 0x7F + 其他 CMD → 响应帧，交给 lup_process_frame() 匹配挂起命令
 *  3. 非 0x7F → 调试打印（可能是字符串等）
 */
void uart_srv(void)
{
    uint8_t i;
    uint8_t _report_flag = 0;

    uart2_dma_poll();   /* DMA 环形缓冲 → 帧解析 (2026-08-17) */

    // 检查命令超时
    lup_cmd_check_timeout();

    if(g_pkg_uart_2.flag){

        if(g_flag_counter_ota.flag == 0){
            if(g_pkg_uart_2.pkg[0] == 0x7F){
                uint8_t cmd = g_pkg_uart_2.pkg[3];

                // --- 所有 0x7F 帧先经过 lup_process_frame 校验 ---
                // 0xC0: 校验后通过回调直接推送 TCP JSON
                // 其他: 校验后匹配挂起命令
                lup_process_frame(g_pkg_uart_2.pkg, g_pkg_uart_2.offset);

                /* --- 4G 通道上行转发 (协议 §6.1) ---
                   校验通过的完整帧原样送 Air780; 必须置于下方 InitPkgUart 消费之前。
                   只转发 verify 通过的帧: Air780 靠 loop_state 变化沿判车, 残缺帧 = 多判一台车 */
                if (lup_verify_checksum(g_pkg_uart_2.pkg, g_pkg_uart_2.offset) == 0) {
                    g_uart1_fwd_to_air++;
                    UART1_SendString(g_pkg_uart_2.pkg, g_pkg_uart_2.offset);
                }

                // --- 传感器上报 (0xC0) 分流 ---
                // 回调已处理 TCP 推送，此处仅处理 BLE 转发
                if(cmd == LUP_CMD_SENSOR_REPORT)
                {
                    if(g_dbn_ble_state_acs_enable.flag != 0){
                        // BLE ACS 已连接 → 改 Magic 为 0x8F 发给 BLE
                        g_pkg_uart_2.pkg[0] = 0x8F;
                        g_flag_notify_temp = set_response_tran_to_notify(g_pkg_uart_2.pkg, g_pkg_uart_2.offset, &g_notify_buftemp);  // 保留给 BLE
                    }
                    /* 2026-08-13 修复: 0xC0 帧消费后必须清 flag —
                       原缺失, auth 未通过时 tcp_json_push_sensor 提前 return
                       也不清 → 坏帧/正常帧反复处理 (checksum fail 刷屏) */
                    InitPkgUart(&g_pkg_uart_2);
                }
                else {
                    if(g_flag_bt_state){
                        g_flag_notify_temp = set_response_tran_to_notify(g_pkg_uart_2.pkg, g_pkg_uart_2.offset, &g_notify_buftemp);
                        InitPkgUart(&g_pkg_uart_2);
                    }
                    else {
                        /* 2026-08-13 修复: 非 0xC0 + 无 BLE 连接也清 flag (原缺失) */
                        InitPkgUart(&g_pkg_uart_2);
                    }                    
                }

                // 调试打印 (2026-08-13: LUP Rx 已在 lup_process_frame 缓冲打印,
                // 此处重复逐字节打印冗余且高频 — 暂时关闭)
#if 0
                for(i = 0; i < g_pkg_uart_2.offset; i++){
                    PRINT(" %02X", g_pkg_uart_2.pkg[i]);
                }
                PRINT("\n");
#endif

            }
            else {
                // 非 0x7F 魔法字节 — hex 打印 (原 %s 会把二进制当字符串 → 乱码)
                PRINT("Rcv_len:%d,dat:", g_pkg_uart_2.offset);
                for(i = 0; i < g_pkg_uart_2.offset; i++){
                    PRINT(" %02X", g_pkg_uart_2.pkg[i]);
                }
                PRINT("\n");
            }
        }
        else{
            /* OTA 模式: Loop bootloader 回的 0x9F ACK 帧 (pre_ok/addr_ok/data ACK) 分发:
               - 本地远程 OTA (g_ota_flash_active, V1.08) → 交给 ota_srv 刷写状态机
               - BLE 透传 (现状, V1.02.03) → 透传回 BLE 工具
               否则停等协议 (0xA7 WITH_BACK) 永远等不到 ACK */
            if(g_ota_flash_active){
                ota_flash_feed_ack(g_pkg_uart_2.pkg, g_pkg_uart_2.offset);
            }
            else if(g_flag_bt_state){
                g_flag_notify_temp = set_response_tran_to_notify(g_pkg_uart_2.pkg, g_pkg_uart_2.offset, &g_notify_buftemp);
            }
            /* OTA 模式同样清 flag — 残留帧会在 OTA 结束后被误处理 */
            InitPkgUart(&g_pkg_uart_2);
        }


        if(g_flag_bt_state){

        }
        else{
            g_dbn_ble_state_acs_enable.flag = 0;
        }

    }
}