/*
 * test_coil_range.c — 线圈电感量合理范围监视 gcc 隔离单测 (DLD154V4B V4.26)
 *
 * 验证对象: TaskLoop.c coil_monitor() (V4.26 拍板规格)
 *   默认低频档口径(43nF 三极管板): 空场频率合理窗 18~171kHz(=L 20µH 下限),
 *   出界即判定电感量不合理; g_coil_fault: 0=正常 1=L偏大(f<18kHz) 2=L<20µH(f>171kHz)
 *   防抖: 越界/恢复均连续 COIL_FAULT_HOLD_TICKS(500tick=5s) 才置位/清除
 *   (V4.36.21 加长, 下限判定重要防误检瞬态冲高)
 *
 * 镜像宏与固件一致 (改 COIL_* 时同步此处!)
 */

#include <assert.h>
#include <stdio.h>
#include <stdint.h>

#define COIL_F_OK_MIN_KHZ  18
#define COIL_F_OK_MAX_KHZ 171
#define COIL_FAULT_HOLD_TICKS 500
#define COIL_DEF_C_NF     66

static uint8_t  g_coil_fault   = 0;
static uint16_t g_coil_bad_cnt = 0;

/* coil_monitor() 纯逻辑镜像 (不含 Origin==0 守卫, 由调用点保证) */
static void coil_step(uint32_t f_khz)
{
    uint8_t want = 0;

    if (f_khz < COIL_F_OK_MIN_KHZ)
        want = 1;
    else if (f_khz > COIL_F_OK_MAX_KHZ)
        want = 2;

    if (want == g_coil_fault) {
        g_coil_bad_cnt = 0;
    } else {
        g_coil_bad_cnt++;
        if (g_coil_bad_cnt >= COIL_FAULT_HOLD_TICKS) {
            g_coil_fault   = want;
            g_coil_bad_cnt = 0;
        }
    }
}

static void run_ticks(uint32_t f_khz, int n)
{
    int i;
    for (i = 0; i < n; i++)
        coil_step(f_khz);
}

static void test_too_large(void)
{
    g_coil_fault = 0; g_coil_bad_cnt = 0;

    /* f=16.3kHz(实测超限线圈) 持续 <5s 不置位 (V4.36.21 防抖加长防误检) */
    run_ticks(16, 499);
    assert(g_coil_fault == 0);
    /* 满 5s → L 偏大 */
    run_ticks(16, 1);
    assert(g_coil_fault == 1);
    /* 保持 → 状态稳定不抖 */
    run_ticks(16, 1000);
    assert(g_coil_fault == 1);
    printf("1. L偏大 (f=16kHz, 5s 防抖置位, 保持稳定) OK\n");
}

static void test_too_small(void)
{
    g_coil_fault = 0; g_coil_bad_cnt = 0;
    run_ticks(200, 500);
    assert(g_coil_fault == 2);
    printf("2. L偏小 (f=200kHz, 5s 防抖置位) OK\n");
}

static void test_recover(void)
{
    g_coil_fault = 1; g_coil_bad_cnt = 0;
    run_ticks(62, 499);
    assert(g_coil_fault == 1);        /* 恢复防抖 <5s 不清除 */
    run_ticks(62, 1);
    assert(g_coil_fault == 0);        /* 满 5s 恢复正常 */
    printf("3. 恢复正常 (5s 防抖清除) OK\n");
}

static void test_boundaries(void)
{
    g_coil_fault = 0; g_coil_bad_cnt = 0;
    run_ticks(17, 500);   assert(g_coil_fault == 1);   /* 17 → 偏大 */
    run_ticks(62, 500);   assert(g_coil_fault == 0);   /* 62 正常(恢复) */
    run_ticks(18, 500);   assert(g_coil_fault == 0);   /* 边界 18 正常 */
    run_ticks(125, 500);  assert(g_coil_fault == 0);   /* 中间 125 正常 (V4.36.20 窗内) */
    run_ticks(171, 500);  assert(g_coil_fault == 0);   /* 边界 171 (=L 20.15µH) 正常 */
    run_ticks(172, 500);  assert(g_coil_fault == 2);   /* 172 → L<20µH 偏小(断开级) */
    printf("4. 边界 17/18/171/172 OK\n");
}

static void test_jitter_no_alarm(void)
{
    /* 抖动: 16 与 62 交替 (每 50tick) → 计数永远到不了 100 → 不误报 */
    int i;
    g_coil_fault = 0; g_coil_bad_cnt = 0;
    for (i = 0; i < 2000; i++)
        coil_step((i & 1) ? 62 : 16);
    assert(g_coil_fault == 0);
    printf("5. 频率抖动不误报 OK\n");
}

int main(void)
{
    test_too_large();
    test_too_small();
    test_recover();
    test_boundaries();
    test_jitter_no_alarm();
    printf("\nALL PASS (窗口 18~171kHz=L 20µH, 防抖 5s)\n");
    return 0;
}