wangfq
0b51d84a9b
MRS 编译 RAM 90.02% (44248/48KB) 逼近历史 .bss 挤栈红线, 减负: - ota_srv.c: _chunk_buf[256] + _fs_frame[254] 合并为 union (下载/校验与刷写帧 互斥复用, 省 ~260B static); ota_send_9f 组帧直接用 union 缓冲 (省 254B 栈) - iot_mqtt_srv.c: 6 个 ota_* 分支 resp[256~400] + ota_data hexbuf[513] 局部栈 数组改 static (栈峰值 → BSS, 防运行时栈溢出; RAM 总量不变但运行时安全) 验证: gcc 隔离单测 9/9 全过; 语法 0 新增错误
588 lines
22 KiB
C
588 lines
22 KiB
C
/**
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******************************************************************************
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* @file ota_srv.c
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* @author wangfq
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* @version V1.0
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* @date 2026-08-20
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* @brief DLD960 Loop MCU 远程 OTA 服务 (MQTT 协议 V1.08, ROADMAP P1.4 ①)
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*
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* 先存后刷:
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* 阶段1 下载: MQTT 分片 (256B/片, 单片+全镜像 CRC32) → W25Qxx 暂存区
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* 阶段2 校验: ota_end 全镜像 CRC32 复核 → state=ready
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* 阶段3 刷写: ota_flash → 本地 0x9F ISP 透传 (A5/A6/A7 停等协议),
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* 非阻塞 tick 驱动挂 ota_poll(), 刷写窗口内 MQTT 保活不受影响
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*
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* 会话静默: downloading/flashing 期间 event_report 暂停发送 (队列积压,
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* 结束后补发) + offlog/快照落盘暂停 ("升级开始"日志暂停前写,
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* "升级结果"恢复后补记)
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*
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* 协议依据: docs/DLD960_IoT_MQTT协议.md §4.19~4.24 / §5.5
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* 设计稿: docs/DLD960_MQTT_OTA协议.md V1.01
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******************************************************************************
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*/
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#include "CONFIG.h"
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#include "cmcng.h"
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#include "ota_srv.h"
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#include "offlog.h"
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#include "storage.h"
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#include "loop_uart_proto.h"
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#include <string.h>
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/*===========================================================================
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* 本地状态
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*===========================================================================*/
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static OtaMeta _meta; /* 当前会话元数据 (RAM 副本) */
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static uint32_t _slot_base; /* 当前 Slot 数据区基址 */
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static uint32_t _meta_watermark; /* 上次落盘元数据时的 received (节流) */
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static uint8_t _init_done; /* ota_init 完成 */
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/* 刷写状态机 (非阻塞 tick 驱动) */
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static uint8_t _fs; /* OTA_FLASH_* */
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static uint8_t _fs_retry; /* 当前步重试计数 */
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static uint32_t _fs_start_ms; /* 当前步起始时刻 (超时判断) */
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static uint16_t _fs_sub; /* 当前块序号 (首=总块数, 末=1) */
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static uint32_t _fs_sent; /* 已送 Loop 字节数 */
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static uint32_t _fs_block_crc; /* 当前块 CRC (调试/审计) */
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uint8_t g_ota_flash_active = 0; /* 本地刷写进行中 → uart_srv 把 ACK 交给 ota_srv */
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/* 块缓冲 (static: 栈紧张教训; union: 下载片 256B 与 A7 帧 254B 互斥复用, 省 ~260B RAM) */
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static union {
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uint8_t chunk[OTA_CHUNK_SIZE]; /* 下载片缓冲 / 校验读缓冲 */
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uint8_t frame[5 + OTA_FLASH_BLOCK + 1]; /* A7 帧: 9F+SubL+SubH+LEN+CMD+DATA+CHECK */
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} _ota_buf;
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/*===========================================================================
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* CRC-32/ISO-HDLC (协议 §4.19.1; 逐位实现, 零查表 RAM)
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* poly=0x04C11DB7 (reflected 0xEDB88320), init=0xFFFFFFFF, xorout=0xFFFFFFFF
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* 校验向量: crc32("123456789") = 0xCBF43926
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*===========================================================================*/
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/* 增量更新: 调用方初始 crc=0xFFFFFFFF, 分块续算, 最后 ^0xFFFFFFFF
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(全镜像 96KB 校验分块读, 不能一次入 RAM) */
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static uint32_t ota_crc32_update(uint32_t crc, const uint8_t *data, uint32_t len)
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{
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uint32_t i;
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uint8_t b;
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for (i = 0; i < len; i++) {
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crc ^= data[i];
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for (b = 0; b < 8; b++) {
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crc = (crc >> 1) ^ (0xEDB88320u & (0u - (crc & 1u)));
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}
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}
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return crc;
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}
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uint32_t ota_crc32(const uint8_t *data, uint32_t len)
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{
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return ota_crc32_update(0xFFFFFFFFu, data, len) ^ 0xFFFFFFFFu;
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}
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/*===========================================================================
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* hex 工具
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*===========================================================================*/
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static uint8_t ota_hex_val(char c)
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{
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if (c >= '0' && c <= '9') return (uint8_t)(c - '0');
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if (c >= 'a' && c <= 'f') return (uint8_t)(c - 'a' + 10);
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if (c >= 'A' && c <= 'F') return (uint8_t)(c - 'A' + 10);
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return 0xFF;
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}
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int ota_hex_decode(const char *hex, uint8_t *out, uint32_t n)
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{
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uint32_t i;
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for (i = 0; i < n; i++) {
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uint8_t hi = ota_hex_val(hex[i * 2]);
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uint8_t lo = ota_hex_val(hex[i * 2 + 1]);
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if (hi == 0xFF || lo == 0xFF) return -1;
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out[i] = (uint8_t)((hi << 4) | lo);
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}
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return 0;
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}
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/*===========================================================================
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* 元数据读写 (双备份, 同扇区 0x010000~0x0103FF)
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* 写: 显式擦扇区 (45ms) + NoCheck 写主 + 写备份
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* 读: 主 magic 有效优先, 否则读备份; 双无效 → 默认 IDLE
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*===========================================================================*/
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static void ota_meta_write(const OtaMeta *m)
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{
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uint8_t buf[64];
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memset(buf, 0xFF, sizeof(buf));
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memcpy(buf, m, sizeof(OtaMeta));
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SPI_Flash_Erase_Sector((uint32_t)OTA_META_SECTOR);
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SPI_Flash_Write_NoCheck(buf, OTA_META_BASE, 64);
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SPI_Flash_Write_NoCheck(buf, OTA_META_BACKUP, 64);
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PRINT("OTA: meta write state=%lu received=%lu\n",
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(unsigned long)m->state, (unsigned long)m->received);
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}
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static int ota_meta_read(OtaMeta *m)
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{
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uint8_t buf[64];
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memset(buf, 0xFF, sizeof(buf));
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SPI_Flash_Read(buf, OTA_META_BASE, 64);
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memcpy(m, buf, sizeof(OtaMeta));
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if (m->magic == OTA_MAGIC) return 0;
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memset(buf, 0xFF, sizeof(buf));
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SPI_Flash_Read(buf, OTA_META_BACKUP, 64);
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memcpy(m, buf, sizeof(OtaMeta));
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if (m->magic == OTA_MAGIC) return 0;
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return -1;
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}
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/* 节流落盘: 每累计 4KB 或关键节点写元数据 (擦 45ms 不能每片做) */
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static void ota_meta_flush(void)
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{
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if (_meta.received - _meta_watermark >= 4096u) {
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ota_meta_write(&_meta);
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_meta_watermark = _meta.received;
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}
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}
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/*===========================================================================
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* 状态工具
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*===========================================================================*/
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const char *ota_state_str(uint8_t state)
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{
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static const char *names[] = {
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"idle", "downloading", "ready", "flashing", "flash_failed", "aborted"
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};
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return (state < 6) ? names[state] : "idle";
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}
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uint8_t ota_silent_active(void)
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{
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return (_meta.state == OTA_STATE_DOWNLOADING || _meta.state == OTA_STATE_FLASHING);
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}
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const OtaMeta *ota_meta(void)
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{
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return &_meta;
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}
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/*===========================================================================
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* 初始化
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*===========================================================================*/
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void ota_init(void)
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{
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OtaMeta m;
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memset(&m, 0, sizeof(m));
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if (ota_meta_read(&m) == 0) {
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/* 恢复上次会话状态 (掉电/复位后) */
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_meta = m;
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if (_meta.state == OTA_STATE_DOWNLOADING) {
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/* 下载中断: 保持 downloading, 平台 ota_begin 时续传 */
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PRINT("OTA: resume downloading received=%lu\n", (unsigned long)_meta.received);
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} else if (_meta.state == OTA_STATE_FLASHING) {
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/* 刷写中断 (掉电): 置失败态, 保留镜像可重试 */
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_meta.state = OTA_STATE_FLASH_FAILED;
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_meta.last_result = OTA_ERR_READY_TIMEOUT;
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PRINT("OTA: flash interrupted on boot, mark failed\n");
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ota_meta_write(&_meta);
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}
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/* ready/aborted/flash_failed/idle: 原样保留 */
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} else {
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memset(&_meta, 0, sizeof(_meta));
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_meta.magic = OTA_MAGIC;
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_meta.state = OTA_STATE_IDLE;
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_meta.slot = 0;
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PRINT("OTA: fresh meta (idle)\n");
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}
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_slot_base = (_meta.slot == 0) ? OTA_SLOT_A_BASE : OTA_SLOT_B_BASE;
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_meta_watermark = _meta.received;
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_fs = OTA_FLASH_IDLE;
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_init_done = 1;
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PRINT("OTA: init done state=%s slot=%d received=%lu\n",
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ota_state_str(_meta.state), _meta.slot, (unsigned long)_meta.received);
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}
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/*===========================================================================
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* 会话命令 — ota_begin (开启会话 / 断点续传定位)
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* 返回: 0=成功 (data.offset = _meta.received 或 size), 非0=错误
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*===========================================================================*/
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int ota_cmd_begin(uint32_t size, uint32_t crc32, const char *version, uint8_t force)
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{
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(void)force; /* 版本冲突判断暂不校验 (bootloader 不校验版本), 预留 */
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if (size == 0 || size > OTA_MAX_IMAGE) {
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return 1; /* 参数错误 */
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}
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/* 已有镜像且 size+crc32 一致 → 续传或直接 ready */
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if (_meta.magic == OTA_MAGIC && _meta.size == size && _meta.crc32 == crc32) {
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_slot_base = (_meta.slot == 0) ? OTA_SLOT_A_BASE : OTA_SLOT_B_BASE;
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if (_meta.state == OTA_STATE_READY) {
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/* 镜像已就绪, 平台可直接 ota_flash */
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return 0; /* data.offset = size */
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}
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if (_meta.state == OTA_STATE_DOWNLOADING) {
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_meta.state = OTA_STATE_DOWNLOADING;
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PRINT("OTA: begin resume received=%lu\n", (unsigned long)_meta.received);
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return 0; /* data.offset = received */
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}
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/* flash_failed / aborted: 重新走下载 */
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}
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/* 新会话: 始终用 Slot A (B 保留上一版镜像做回滚) */
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_slot_base = OTA_SLOT_A_BASE;
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memset(&_meta, 0, sizeof(_meta));
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_meta.magic = OTA_MAGIC;
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_meta.state = OTA_STATE_DOWNLOADING;
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_meta.target = 0;
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_meta.slot = 0;
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_meta.size = size;
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_meta.crc32 = crc32;
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_meta.received = 0;
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_meta.last_result = 0;
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_meta.begin_ts = 0;
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memset(_meta.version, 0, sizeof(_meta.version));
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if (version) strncpy(_meta.version, version, sizeof(_meta.version) - 1);
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_meta.flash_cnt = 0;
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_meta_watermark = 0;
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/* 先擦目标 Slot 数据区 (100KB = 25 扇区 ~1.1s, 主循环上下文可接受 < IWDG 4s) */
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{
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uint32_t sec;
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for (sec = 0; sec < OTA_SLOT_SIZE / 4096UL; sec++) {
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SPI_Flash_Erase_Sector((uint32_t)(_slot_base / 4096UL) + sec);
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}
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}
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ota_meta_write(&_meta);
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PRINT("OTA: begin new session size=%lu crc32=0x%08lX slot=%d\n",
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(unsigned long)size, (unsigned long)crc32, _meta.slot);
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return 0;
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}
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/*===========================================================================
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* 会话命令 — ota_data (分片下发, 256B/片)
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* 返回: 0=成功 (幂等), 1=参数/CRC/乱序 (err_code 由调用方区分), 3=会话状态错
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*===========================================================================*/
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int ota_cmd_data(uint32_t offset, uint32_t crc32, const char *hex)
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{
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uint32_t clen;
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if (_meta.state != OTA_STATE_DOWNLOADING) {
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return 3; /* 会话状态不允许 (err_code=2 由调用方映射) */
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}
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if (offset % OTA_CHUNK_SIZE != 0 || offset >= _meta.size) {
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return 1; /* 参数错误 */
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}
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if (offset < _meta.received) {
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return 0; /* 重复片: 幂等 */
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}
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if (offset > _meta.received) {
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return 1; /* 乱序缺片: 调用方用 data.offset=received 指示续传 */
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}
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clen = _meta.size - offset;
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if (clen > OTA_CHUNK_SIZE) clen = OTA_CHUNK_SIZE;
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if (ota_hex_decode(hex, _ota_buf.chunk, clen) != 0) {
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return 1; /* hex 格式错误 */
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}
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if (ota_crc32(_ota_buf.chunk, clen) != crc32) {
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return 1; /* 单片 CRC 失败 */
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}
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/* 落盘: SPI_Flash_Write 自带"目标区非 0xFF 则读-改-写擦扇区" (256B 页对齐) */
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SPI_Flash_Write(_ota_buf.chunk, _slot_base + offset, (uint16_t)clen);
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_meta.received = offset + clen;
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ota_meta_flush();
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PRINT("OTA: data@%lu crc_ok received=%lu\n",
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(unsigned long)offset, (unsigned long)_meta.received);
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return 0;
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}
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/*===========================================================================
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* 会话命令 — ota_end (全镜像 CRC32 复核)
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*===========================================================================*/
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int ota_cmd_end(uint32_t crc32)
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{
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if (_meta.state != OTA_STATE_DOWNLOADING) {
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return 3;
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}
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if (_meta.received != _meta.size) {
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return 1; /* 不完整: data.offset=received 续传 */
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}
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if (crc32 != _meta.crc32) {
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return 1; /* 声明值不一致 */
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}
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/* 读回暂存区计算全镜像 CRC32 (分块增量, 96KB ≈ 40ms @120MHz, 主循环上下文) */
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{
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uint32_t total = 0xFFFFFFFFu;
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uint32_t i = 0;
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while (i < _meta.size) {
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uint32_t n = _meta.size - i;
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if (n > OTA_CHUNK_SIZE) n = OTA_CHUNK_SIZE;
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SPI_Flash_Read(_ota_buf.chunk, _slot_base + i, (uint16_t)n);
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total = ota_crc32_update(total, _ota_buf.chunk, n);
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i += n;
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}
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total ^= 0xFFFFFFFFu;
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if (total != _meta.crc32) {
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_meta.state = OTA_STATE_DOWNLOADING; /* 保留已下载数据, 可重发错片 */
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PRINT("OTA: end CRC mismatch 0x%08lX != 0x%08lX\n",
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(unsigned long)total, (unsigned long)_meta.crc32);
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return 5; /* 内部错误 + data.crc_ok=false */
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}
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}
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_meta.state = OTA_STATE_READY;
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_meta.last_result = 0;
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ota_meta_write(&_meta);
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PRINT("OTA: end OK crc_ok → ready (slot %d)\n", _meta.slot);
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return 0;
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}
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/*===========================================================================
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* 会话命令 — ota_abort
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*===========================================================================*/
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int ota_cmd_abort(void)
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{
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if (_meta.state == OTA_STATE_IDLE) {
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return 0; /* 无会话: 幂等 */
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}
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_meta.state = OTA_STATE_ABORTED;
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ota_meta_write(&_meta);
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PRINT("OTA: abort → aborted\n");
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return 0;
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}
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/*===========================================================================
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* 会话命令 — ota_flash (触发本地 ISP 刷写, 同步检查 + 异步执行)
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* 安全窗口: 4 通道任一有车 → 拒绝 (err_code=3); force 跳过
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*===========================================================================*/
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int ota_cmd_flash(uint8_t slot, uint8_t force)
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{
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uint8_t any_car;
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extern uint8_t iot_any_car(void);
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if (_meta.state != OTA_STATE_READY) {
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return 3; /* 非 ready: 先 ota_end */
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}
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if (slot != 0 && slot != 1) {
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return 1;
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}
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if (slot != _meta.slot) {
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/* 指定了非当前 ready 槽: 读该槽元数据? 简化: 仅允许当前槽 */
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return 1;
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}
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/* 与 BLE OTA 透传互斥: g_flag_counter_ota.flag=1 且非本地刷写 → 拒绝 */
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if (g_flag_counter_ota.flag != 0 && !g_ota_flash_active) {
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return 3;
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}
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/* 安全窗口: 有车压线圈拒绝 (force 跳过) */
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any_car = iot_any_car();
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if (!force && any_car) {
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PRINT("OTA: flash rejected, car on loop\n");
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return 3;
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}
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|
||
/* 启动刷写 (异步): offlog 开始事件先写 (会话静默前) */
|
||
offlog_ota_start(_meta.slot, _meta.size);
|
||
_meta.state = OTA_STATE_FLASHING;
|
||
_meta.flash_cnt++;
|
||
_meta.last_result = 0;
|
||
ota_meta_write(&_meta);
|
||
|
||
_fs = OTA_FLASH_START;
|
||
_fs_retry = 0;
|
||
_fs_sent = 0;
|
||
_fs_sub = 0;
|
||
g_ota_flash_active = 1;
|
||
g_flag_counter_ota.flag = 1; /* UART2 切 0x9F 解析 */
|
||
g_flag_counter_ota.tick = 0;
|
||
PRINT("OTA: flash start slot=%d size=%lu (force=%d)\n",
|
||
_meta.slot, (unsigned long)_meta.size, force);
|
||
return 0;
|
||
}
|
||
|
||
/*===========================================================================
|
||
* 刷写状态机 (非阻塞 tick 驱动, ota_poll 每主循环调用)
|
||
*
|
||
* A5 启动 → pre_ok → A6 地址 → addr_ok → A7 数据块×N → 末块(序号=1) → 完成
|
||
* 每步超时 1s 重试 ×3; 失败 → state=flash_failed + event_report ota_error
|
||
*===========================================================================*/
|
||
|
||
/* 0x9F 帧发送: 9F SubL SubH LEN CMD DATA... CHECK(SUM 不含 magic) */
|
||
static void ota_send_9f(uint8_t sub_l, uint8_t sub_h, uint8_t cmd,
|
||
const uint8_t *data, uint16_t datalen)
|
||
{
|
||
uint16_t i;
|
||
uint8_t sum = 0;
|
||
_ota_buf.frame[0] = 0x9F;
|
||
_ota_buf.frame[1] = sub_l;
|
||
_ota_buf.frame[2] = sub_h;
|
||
_ota_buf.frame[3] = (uint8_t)(1 + datalen); /* LEN 含 CMD */
|
||
_ota_buf.frame[4] = cmd;
|
||
if (data && datalen) memcpy(&_ota_buf.frame[5], data, datalen);
|
||
for (i = 1; i < 5 + datalen; i++) sum += _ota_buf.frame[i]; /* SubL..DATA */
|
||
_ota_buf.frame[5 + datalen] = sum;
|
||
UART2_SendString(_ota_buf.frame, (uint16_t)(5 + datalen + 1));
|
||
}
|
||
|
||
/* 刷写失败收尾: 状态落盘 + event_report 告警 + 恢复 0x7F 模式 */
|
||
static void ota_flash_fail(uint32_t err)
|
||
{
|
||
PRINT("OTA: flash FAILED err=0x%lX\n", (unsigned long)err);
|
||
_meta.state = OTA_STATE_FLASH_FAILED;
|
||
_meta.last_result = err;
|
||
ota_meta_write(&_meta);
|
||
offlog_ota_result(err);
|
||
/* 恢复 UART2 0x7F 模式 */
|
||
g_ota_flash_active = 0;
|
||
g_flag_counter_ota.flag = 0;
|
||
lup_frame_reset();
|
||
_fs = OTA_FLASH_IDLE;
|
||
/* event_report ota_error 告警 (平台必答, 由 iot_mqtt_srv 发送) */
|
||
extern void iot_evt_report_ota_error(uint32_t err);
|
||
iot_evt_report_ota_error(err);
|
||
}
|
||
|
||
/* 刷写成功收尾: 保留镜像 (state=ready 可重刷), 恢复 0x7F 模式 */
|
||
static void ota_flash_done(void)
|
||
{
|
||
PRINT("OTA: flash DONE sent=%lu\n", (unsigned long)_fs_sent);
|
||
_meta.state = OTA_STATE_READY;
|
||
_meta.last_result = 0;
|
||
ota_meta_write(&_meta);
|
||
offlog_ota_result(0);
|
||
g_ota_flash_active = 0;
|
||
g_flag_counter_ota.flag = 0;
|
||
lup_frame_reset();
|
||
_fs = OTA_FLASH_IDLE;
|
||
}
|
||
|
||
/* UART2 收到 bootloader 0x9F ACK 帧 (uart_srv OTA 分支调用, 主循环上下文)
|
||
* ACK 帧: 9F SubL SubH 02 CMD Status CHECK
|
||
* pre_ok = 9F 01 00 02 A5 00 A8
|
||
* addr_ok = 9F 01 00 02 A6 00 A9 | addr_err = 9F 01 00 02 A6 01 AA
|
||
* data ack= 9F SubL SubH 02 A7 00 CK | data err = 9F SubL SubH 02 A7 01 CK */
|
||
void ota_flash_feed_ack(const uint8_t *pkg, uint16_t len)
|
||
{
|
||
uint8_t cmd, status;
|
||
if (len < 7 || pkg[0] != 0x9F) return;
|
||
if (pkg[3] != 0x02) return; /* ACK 帧 LEN=2 */
|
||
cmd = pkg[4];
|
||
status = pkg[5];
|
||
PRINT("OTA: ack cmd=0x%02X status=%d sub=%u\n", cmd, status, pkg[1]);
|
||
|
||
switch (_fs) {
|
||
case OTA_FLASH_WAIT_READY:
|
||
if (cmd == 0xA5 && status == 0x00) {
|
||
_fs = OTA_FLASH_ADDR;
|
||
_fs_retry = 0;
|
||
}
|
||
break;
|
||
case OTA_FLASH_WAIT_ADDR:
|
||
if (cmd == 0xA6 && status == 0x00) {
|
||
/* 地址 OK → 进入数据阶段: 首块序号 = 总块数 (末块=1) */
|
||
uint32_t blocks = (_meta.size + OTA_FLASH_BLOCK - 1) / OTA_FLASH_BLOCK;
|
||
_fs_sub = (uint16_t)(blocks > 0xFFFF ? 0xFFFF : blocks);
|
||
_fs_sent = 0;
|
||
_fs = OTA_FLASH_DATA;
|
||
_fs_retry = 0;
|
||
} else if (cmd == 0xA6 && status != 0x00) {
|
||
ota_flash_fail(OTA_ERR_ADDR_FAIL);
|
||
}
|
||
break;
|
||
case OTA_FLASH_WAIT_ACK:
|
||
if (cmd == 0xA7) {
|
||
if (status == 0x00) {
|
||
_fs_sent += OTA_FLASH_BLOCK;
|
||
if (_fs_sent >= _meta.size) _fs_sent = _meta.size;
|
||
_fs_retry = 0;
|
||
if (_fs_sub <= 1) {
|
||
/* 末块已 ACK → 完成 (bootloader 清 flag 复位跑新 APP) */
|
||
ota_flash_done();
|
||
} else {
|
||
_fs_sub--; /* 序号递减: 首=总块数, 末=1 */
|
||
_fs = OTA_FLASH_DATA;
|
||
}
|
||
} else {
|
||
/* 数据块错误: 重发同块 (序号不变) */
|
||
_fs_retry++;
|
||
if (_fs_retry > 3) {
|
||
ota_flash_fail(OTA_ERR_DATA_ACK_LIMIT);
|
||
} else {
|
||
_fs = OTA_FLASH_DATA;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
uint32_t ota_flash_sent(void) { return _fs_sent; }
|
||
uint32_t ota_flash_total(void) { return _meta.size; }
|
||
|
||
/* 主循环轮询: 推进刷写状态机 (每轮最多发 1~2 块, 绝不阻塞) */
|
||
void ota_poll(void)
|
||
{
|
||
uint32_t now;
|
||
|
||
if (!_init_done || _fs == OTA_FLASH_IDLE) return;
|
||
|
||
now = mstick();
|
||
if (_fs == OTA_FLASH_START) {
|
||
/* 发 A5 启动帧: 9F 01 00 01 A5 A7 → Loop APP 写 flag 复位 → bootloader 回 pre_ok */
|
||
static const uint8_t start_frame[6] = {0x9F, 0x01, 0x00, 0x01, 0xA5, 0xA7};
|
||
UART2_SendString((uint8_t *)start_frame, 6);
|
||
_fs = OTA_FLASH_WAIT_READY;
|
||
_fs_start_ms = now;
|
||
/* 重试计数保持 (首发由 ota_cmd_flash 置 0; 重发不清零, 否则超时重试永不失败) */
|
||
PRINT("OTA: sent A5 start\n");
|
||
return;
|
||
}
|
||
if (_fs == OTA_FLASH_WAIT_READY) {
|
||
if (now - _fs_start_ms > 1000u) {
|
||
_fs_retry++;
|
||
if (_fs_retry > 3) { ota_flash_fail(OTA_ERR_READY_TIMEOUT); return; }
|
||
_fs = OTA_FLASH_START; /* 重发启动帧 */
|
||
}
|
||
return;
|
||
}
|
||
if (_fs == OTA_FLASH_ADDR) {
|
||
/* 发 A6 地址帧: 9F 01 00 05 A6 08 00 34 00 SUM (0x08003400 大端) */
|
||
uint8_t addr[4] = {0x08, 0x00, 0x34, 0x00}; /* APP_START_ADDR */
|
||
ota_send_9f(0x01, 0x00, 0xA6, addr, 4);
|
||
_fs = OTA_FLASH_WAIT_ADDR;
|
||
_fs_start_ms = now;
|
||
/* 重试计数保持 (ACK 成功路径在 ota_flash_feed_ack 清 0) */
|
||
return;
|
||
}
|
||
if (_fs == OTA_FLASH_WAIT_ADDR) {
|
||
if (now - _fs_start_ms > 1000u) {
|
||
_fs_retry++;
|
||
if (_fs_retry > 3) { ota_flash_fail(OTA_ERR_ADDR_FAIL); return; }
|
||
_fs = OTA_FLASH_ADDR; /* 重发地址帧 */
|
||
}
|
||
return;
|
||
}
|
||
if (_fs == OTA_FLASH_DATA) {
|
||
/* 从 W25Qxx 读一块 → 组 A7 帧 → 发 (停等 ACK) */
|
||
uint32_t read_off = _fs_sent;
|
||
uint32_t remain = _meta.size - read_off;
|
||
uint16_t datalen = (remain > OTA_FLASH_BLOCK) ? OTA_FLASH_BLOCK : (uint16_t)remain;
|
||
SPI_Flash_Read(_ota_buf.frame + 5, _slot_base + read_off, datalen);
|
||
ota_send_9f((uint8_t)(_fs_sub & 0xFF), (uint8_t)(_fs_sub >> 8), 0xA7,
|
||
_ota_buf.frame + 5, datalen);
|
||
_fs = OTA_FLASH_WAIT_ACK;
|
||
_fs_start_ms = now;
|
||
PRINT("OTA: sent A7 sub=%u off=%lu datalen=%u\n",
|
||
_fs_sub, (unsigned long)read_off, datalen);
|
||
return;
|
||
}
|
||
if (_fs == OTA_FLASH_WAIT_ACK) {
|
||
if (now - _fs_start_ms > 1000u) {
|
||
_fs_retry++;
|
||
if (_fs_retry > 3) { ota_flash_fail(OTA_ERR_DATA_ACK_LIMIT); return; }
|
||
_fs = OTA_FLASH_DATA; /* 重发同块 */
|
||
}
|
||
return;
|
||
}
|
||
}
|