/*
 * 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 20~115kHz, 出界即判定电感量不合理
 *   g_coil_fault: 0=正常 1=L偏大(f<20kHz) 2=L偏小(f>115kHz)
 *   防抖: 越界/恢复均连续 100tick(=1s) 才置位/清除 (调用点=稳定无车空闲)
 *
 * 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  20
#define COIL_F_OK_MAX_KHZ 115
#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 >= 100) {
            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 <1s 不置位 */
    run_ticks(16, 99);
    assert(g_coil_fault == 0);
    /* 满 1s → L 偏大 */
    coil_step(16);
    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, 1s 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(150, 100);
    assert(g_coil_fault == 2);
    printf("2. L偏小 (f=150kHz, 1s 防抖置位) OK\n");
}

static void test_recover(void)
{
    g_coil_fault = 1; g_coil_bad_cnt = 0;
    run_ticks(62, 99);
    assert(g_coil_fault == 1);        /* 恢复防抖 <1s 不清除 */
    coil_step(62);
    assert(g_coil_fault == 0);        /* 满 1s 恢复正常 */
    printf("3. 恢复正常 (1s 防抖清除) OK\n");
}

static void test_boundaries(void)
{
    g_coil_fault = 0; g_coil_bad_cnt = 0;
    run_ticks(19, 100);   assert(g_coil_fault == 1);   /* 19 → 偏大 */
    run_ticks(62, 100);   assert(g_coil_fault == 0);   /* 20~115 正常 */
    run_ticks(20, 100);   assert(g_coil_fault == 0);   /* 边界 20 正常 */
    run_ticks(115, 100);  assert(g_coil_fault == 0);   /* 边界 115 正常 */
    run_ticks(116, 100);  assert(g_coil_fault == 2);   /* 116 → 偏小 */
    printf("4. 边界 19/20/115/116 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 20~115kHz, 防抖 1s)\n");
    return 0;
}