245 lines
6.8 KiB
C
245 lines
6.8 KiB
C
/******************************************************************************
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* @file app_th.c
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* @brief CBR3 温湿度采集实现
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* @author cyWu <1917507415@qq.com>
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* @date 2026.09.03
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* @version V1.3.0，对外温湿度与显示/上报绑死（T>=0.5℃ / H>=2%）
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******************************************************************************/
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#include "app_th.h"
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#include "bsp_aht20.h"
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#include "board_pin.h"
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#include "system/includes.h"
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#define LOG_TAG_CONST APP
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#define LOG_TAG "[APP_TH]"
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#define LOG_ERROR_ENABLE
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#define LOG_INFO_ENABLE
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#include "debug.h"
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extern u32 timer_get_ms(void);
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extern void clr_wdt(void);
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/** 采样状态机 */
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typedef enum {
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TH_ST_IDLE = 0, /**< 空闲，等待下一个采样周期 */
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TH_ST_WAIT_DATA /**< 命令已发出，等 ≥80ms 后读数 */
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} ThState_t;
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typedef struct {
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uint8_t inited;
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ThState_t state;
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uint16_t poll_ms; /**< 距上次采样的累计毫秒 */
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uint32_t wait_t0; /**< 测量命令发出时刻 */
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int16_t temp_pub; /**< 对外温度 ×10（显示/上报/联动，|ΔT|>=0.5℃ 才改） */
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uint8_t humi_pub; /**< 对外湿度 %（显示/上报/联动，|ΔH|>=2 才改） */
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uint8_t valid; /**< 1=有有效采样 */
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uint8_t fail_cnt; /**< 连续失败次数 */
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uint8_t last_ok; /**< 最近一次采样是否成功（app_linkage 8.4 用） */
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} AppThCtx_t;
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static AppThCtx_t s_th;
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/**
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* 「本周期采样成功」事件（生产者=20ms 中断，消费者=500ms 任务上下文）
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* ⚠ 中断里只写这三个 volatile，绝不做开关广播 / 打日志 / 写 flash
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*/
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static volatile uint8_t s_th_pending;
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static volatile int16_t s_th_pending_t;
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static volatile uint8_t s_th_pending_h;
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/**
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* @brief 记一次采样失败（发令 nack / 读数失败共用）
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* @return 无
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*/
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static void th_on_fail(void)
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{
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if (s_th.fail_cnt < 0xFF) {
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s_th.fail_cnt++;
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}
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s_th.last_ok = 0;
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log_error("th sample fail %d\n", s_th.fail_cnt);
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}
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/**
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* @brief 初始化温湿度模块
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* @return 无
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*/
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void app_th_init(void)
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{
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#if !BOARD_TH_ENABLE
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log_info("th disabled\n");
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return;
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#endif
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if (s_th.inited) {
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return;
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}
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bsp_aht20_init();
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s_th.state = TH_ST_IDLE;
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s_th.poll_ms = 0;
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s_th.valid = 0;
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s_th.fail_cnt = 0;
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s_th.last_ok = 0;
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s_th_pending = 0;
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s_th_pending_t = 0;
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s_th_pending_h = 0;
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s_th.inited = 1;
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log_info("th init period=%ums\n", (unsigned)BOARD_TH_PERIOD_MS);
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}
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/**
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* @brief 业务节拍：内部 2s 才真正采一次；IO 分离后采集与显示互不干扰
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* @param dt 距上次调用的毫秒数
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* @return 无
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*/
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void app_th_poll(uint16_t dt)
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{
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#if !BOARD_TH_ENABLE
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(void)dt;
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return;
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#endif
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if (!s_th.inited) {
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return;
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}
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if (s_th.state == TH_ST_IDLE) {
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s_th.poll_ms = (uint16_t)(s_th.poll_ms + dt);
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if (s_th.poll_ms >= BOARD_TH_PERIOD_MS) {
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s_th.poll_ms = 0;
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if (bsp_aht20_measure_start() == 0) {
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s_th.state = TH_ST_WAIT_DATA;
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s_th.wait_t0 = timer_get_ms();
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} else {
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/* 发令阶段 addr nack（未插/脱落）也算一次采样失败，不能直接跳过 */
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th_on_fail();
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}
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}
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} else if (s_th.state == TH_ST_WAIT_DATA) {
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clr_wdt();
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if ((timer_get_ms() - s_th.wait_t0) >= BOARD_AHT20_WAIT_MS) {
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int16_t t = 0;
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uint8_t h = 0;
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int8_t ret = bsp_aht20_measure_finish(&t, &h);
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/* IO 分离后无总线竞争，finish 不会返回 -2；0=成功，-1=通讯失败 */
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s_th.state = TH_ST_IDLE;
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if (ret == 0) {
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int16_t dt_x10;
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uint8_t dh;
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/* 首次成功直接跟上；之后相对对外值达到阈值才改显示/上报/联动 */
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if (!s_th.valid) {
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s_th.temp_pub = t;
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s_th.humi_pub = h;
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} else {
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dt_x10 = (int16_t)(t - s_th.temp_pub);
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if (dt_x10 < 0) {
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dt_x10 = (int16_t)(-dt_x10);
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}
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if (dt_x10 >= BOARD_TH_TEMP_PUB_DELTA_X10) {
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s_th.temp_pub = t;
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}
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dh = (h > s_th.humi_pub) ? (uint8_t)(h - s_th.humi_pub)
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: (uint8_t)(s_th.humi_pub - h);
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if (dh >= BOARD_TH_HUMI_PUB_DELTA) {
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s_th.humi_pub = h;
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}
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}
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s_th.fail_cnt = 0;
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s_th.valid = 1;
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s_th.last_ok = 1;
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/* 先填值再置 pending：消费者关中断取，生产者是中断，顺序无歧义 */
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s_th_pending_t = s_th.temp_pub;
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s_th_pending_h = s_th.humi_pub;
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s_th_pending = 1;
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log_info("th raw=%d.%dC/%d%% pub=%d.%dC/%d%%\n",
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(int)(t / 10), (int)((t < 0) ? (-t % 10) : (t % 10)), (int)h,
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(int)(s_th.temp_pub / 10),
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(int)((s_th.temp_pub < 0) ? (-s_th.temp_pub % 10) : (s_th.temp_pub % 10)),
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(int)s_th.humi_pub);
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} else {
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th_on_fail();
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}
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}
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}
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}
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/**
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* @brief 是否已有有效采样
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* @return 1=有效，0=从未成功
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*/
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uint8_t app_th_get_valid(void)
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{
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return s_th.valid;
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}
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/**
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* @brief 对外温度（数码管 + DP3 + 联动）
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* @return 温度 ×10
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*/
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int16_t app_th_get_temp_x10(void)
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{
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return s_th.temp_pub;
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}
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/**
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* @brief 对外湿度（数码管 + DP4 + 联动）
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* @return 湿度 0~100 整数 %
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*/
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uint8_t app_th_get_humi(void)
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{
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return s_th.humi_pub;
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}
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/**
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* @brief 连续失败次数
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* @return 连续失败次数
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*/
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uint8_t app_th_get_fail_cnt(void)
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{
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return s_th.fail_cnt;
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}
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/**
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* @brief 传感器故障（连续失败 ≥ BOARD_TH_FAIL_MAX）
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* @return 1=故障（显示 --、fault_code=1），0=正常
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*/
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uint8_t app_th_is_fault(void)
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{
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return (s_th.fail_cnt >= BOARD_TH_FAIL_MAX) ? 1 : 0;
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}
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/**
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* @brief 最近一次采样是否成功（规格书 8.4：联动只用本次成功值判）
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* @return 1=成功，0=失败/未采样过
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*/
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uint8_t app_th_last_sample_ok(void)
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{
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return s_th.last_ok;
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}
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/**
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* @brief 取走一次「本周期采样成功」事件（消费端，任务上下文）
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* @param t_x10 出参：温度 ×10
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* @param h 出参：湿度 %
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* @return 1=取到新采样，0=无新采样
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*/
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uint8_t app_th_take_sample(int16_t *t_x10, uint8_t *h)
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{
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uint8_t got;
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local_irq_disable();
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got = s_th_pending;
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if (got) {
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s_th_pending = 0;
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if (t_x10) {
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*t_x10 = s_th_pending_t;
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}
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if (h) {
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*h = s_th_pending_h;
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}
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}
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local_irq_enable();
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return got;
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}
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