From 09b993ba0d23ffb689732dc730ba240059e2f4b9 Mon Sep 17 00:00:00 2001
From: Aiden <flyu0033136@gmail.com>
Date: Wed, 1 Jul 2026 14:52:14 +0800
Subject: [PATCH] feat: adjust LLC period parameters and enhance control logic
 for stability

---
 .../Examples/template/LLC_48V/inc/main.h      |   6 +-
 .../Examples/template/LLC_48V/src/main.c      | 111 +++++-------------
 2 files changed, 35 insertions(+), 82 deletions(-)

diff --git a/pec930_sdk-v1.0.1/Examples/template/LLC_48V/inc/main.h b/pec930_sdk-v1.0.1/Examples/template/LLC_48V/inc/main.h
index 4978a43..a9d3791 100644
--- a/pec930_sdk-v1.0.1/Examples/template/LLC_48V/inc/main.h
+++ b/pec930_sdk-v1.0.1/Examples/template/LLC_48V/inc/main.h
@@ -53,12 +53,12 @@ extern "C"
 //  武士 12V 變壓器 + 47nF 諧振頻率 ~ 75KHZ
 //  實測值 106uH + 47nF = 73KHZ --> PERIOD = 820 ~ 830
 //  高正 40uH + 68nF ~ 95KHZ
-#define LLC_PERIOD_SS     300                // 300 = 200khz (EPWM initial use)
+#define LLC_PERIOD_SS     200                // 300 = 200khz (EPWM initial use)
 #define DEAD_TIME         500                // ns
 #define DEAD_TIME_VALUE   (DEAD_TIME * 0.06) // double
 // LLC free run, 改控 vbus_set
-#define LLC_PERIOD_MIN    300 // MIN, 300 = 200KHZ (>760不會振)
-#define LLC_PERIOD_MAX    600 // MAX, 600 = 100KHZ // 可調範圍太大會共振
+#define LLC_PERIOD_MIN    200 // MIN, 300 = 200KHZ (>760不會振)
+#define LLC_PERIOD_MAX    400 // MAX, 600 = 100KHZ // 可調範圍太大會共振
 #define LLC_COMP_GAIN_BIT 10  // 要慢才不會振
 #define LLC_COMP_MAX      ((LLC_PERIOD_MAX - LLC_PERIOD_MIN) << LLC_COMP_GAIN_BIT)
 // LLC Soft Start 掃頻 2倍 ~ 1倍 = 150KHZ ~ 73KHZ
diff --git a/pec930_sdk-v1.0.1/Examples/template/LLC_48V/src/main.c b/pec930_sdk-v1.0.1/Examples/template/LLC_48V/src/main.c
index 1163ff5..1a75c2c 100644
--- a/pec930_sdk-v1.0.1/Examples/template/LLC_48V/src/main.c
+++ b/pec930_sdk-v1.0.1/Examples/template/LLC_48V/src/main.c
@@ -81,8 +81,11 @@ uint16_t llc_ss_cnt = 0;
 
 uint8_t power_on_cmd = 0;
 uint32_t vac_avg1;
-uint32_t vbus_avg = 0;
+uint32_t vbus_avg;
 uint32_t vcomp_avg;
+uint32_t ipcs_avg;
+
+uint8_t power_on = 0;
 
 uint32_t static digital_vcomp = (LLC_PERIOD_MAX - LLC_PERIOD_MIN) << LLC_COMP_GAIN_BIT;
 uint16_t llc_period_ss = LLC_SS_MIN;
@@ -198,7 +201,10 @@ static void Capture_Dump_IfReady(void)
 //-------------------------------------------------------------------------
 void llc_set_period(uint16_t val)
 {
-  if (val > LLC_PERIOD_MAX) val = LLC_PERIOD_MAX; // 可以小，不能過大
+  if (val > LLC_PERIOD_MAX)
+    val = LLC_PERIOD_MAX;
+  else if (val < LLC_PERIOD_MIN)
+    val = LLC_PERIOD_MIN;
   EPWM->ARR = val;
   EPWM->CCR1 = val >> 1;
 }
@@ -206,11 +212,13 @@ void llc_set_period(uint16_t val)
 void llc_pwm_enable()
 {
   REG_SET_BITS(EPWM->CCER, TIM_CCER_CC1E_Msk | TIM_CCER_CC1NE_Msk);
+  power_on = 1;
 }
 //===================================================================================
 void llc_pwm_disable()
 {
   REG_CLR_BITS(EPWM->CCER, TIM_CCER_CC1E_Msk | TIM_CCER_CC1NE_Msk);
+  power_on = 0;
 }
 //===================================================================================
 // Cr 1P1Z 回授，做負載驟變補償，執行頻率 10KHZ
@@ -433,61 +441,14 @@ __attribute__((always_inline)) static inline void Cur_Loop_PFC_2P2Z(void) // 優
 }
 //============================================================================
 
-void Vol_Loop_LLC(void) // 測試可工作
+void Vol_Loop_LLC(void) // 調整 period 控制 vcomp 穩定
 {
-  static uint8_t last_gpio = 0;
-  static uint16_t toggle_cnt = 0;
-  static uint16_t stable_timer = 0;
+  uint32_t new_arr = EPWM->ARR;
 
-  // 1. 讀取 GPIO 回授
-  uint8_t gpio = GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_12);
-
-  // 2. 判斷是否發生翻轉 (判斷是否在平衡點附近跳動)
-  if (gpio != last_gpio)
-  {
-    toggle_cnt++;
-    last_gpio = gpio;
-    stable_timer = 0; // 只要有翻轉，就重置穩定計時器
-  }
-  else
-  {
-    // 如果 GPIO 長時間沒翻轉，說明離目標還很遠
-    if (stable_timer < 1000) stable_timer++;
-  }
-
-  // 3. 根據翻轉頻率決定步長
-  uint16_t current_step;
-  if (toggle_cnt > STABLE_THRES)
-  {
-    // 頻繁翻轉：進入「死區」或「極小步長」模式
-    current_step = 0; // 設為 0 表示進入死區，完全停止震盪
-
-    // 為了防止永久卡死，當連續相同狀態一段時間後再恢復調整
-    if (stable_timer > 50) toggle_cnt = 0;
-  }
-  else
-  {
-    // 距離目標尚遠：根據 stable_timer 決定快慢
-    current_step = (stable_timer > 100) ? STEP_FAST : STEP_SLOW;
-  }
-
-  // 4. 執行調整
-  if (current_step > 0)
-  {
-    if (gpio == 1)
-    {
-      if (digital_vcomp + current_step <= digi_vcomp_max)
-        digital_vcomp += current_step;
-    }
-    else
-    {
-      if (digital_vcomp > (1000 + current_step))
-        digital_vcomp -= current_step;
-    }
-  }
-
-  // 5. 計算並更新 ARR (原本的邏輯)
-  uint32_t new_arr = LLC_PERIOD_MIN + (digital_vcomp >> LLC_COMP_GAIN_BIT);
+  if (vcomp_avg > 2000)
+    new_arr++; // vcomp 上升， arr ++
+  else if (vcomp_avg < 1950)
+    new_arr--; // vcomp 下降， arr --
 
   if (new_arr > LLC_PERIOD_MAX) new_arr = LLC_PERIOD_MAX;
   if (new_arr < LLC_PERIOD_MIN) new_arr = LLC_PERIOD_MIN;
@@ -508,9 +469,9 @@ __INTERRUPT void isr_adc_handle(void)
   adc_trigger = 1;
 
   // get ADC value
-  vbus = ADC0->DAT4_b.DATA;  // PA10, AIN4
-  ipcs = ADC0->DAT9_b.DATA;  // PA7, AIN9
-  vcomp = ADC0->DAT7_b.DATA; // PA13, AIN7
+  vbus = ADC0->DAT2_b.DATA;  // PA8		AIN2
+  ipcs = ADC0->DAT3_b.DATA;  // PA9		AIN3
+  vcomp = ADC0->DAT4_b.DATA; // PA10	AIN4
 
   // if (cur_loop_fun_en) Cur_Loop_PFC_2P2Z(); // current loop
   /*
@@ -584,8 +545,8 @@ void Handle_UART_Monitor(void)
   static uint32_t msg_timer2 = 0;
   if (sys_get_tick() - msg_timer2 >= 1000)
   {
-    printf("%d %d %d\n", power_on_cmd, sys_state, vbus_comp2);
-    // msg_timer2 = sys_get_tick();
+    printf("%d %d %d\r\n", vbus, ipcs, vcomp);
+    msg_timer2 = sys_get_tick();
   }
 }
 //=============================================================================
@@ -629,8 +590,9 @@ int main(void)
 
       // 高速信號濾波 (簡易位移算法減少算力消耗) ---
       vbus_avg = (vbus_avg - (vbus_avg >> 3)) + (vbus >> 3);
+      ipcs_avg = (ipcs_avg - (ipcs_avg >> 3)) + (ipcs >> 3);
       vcomp_avg = (vcomp_avg - (vcomp_avg >> 3)) + (vcomp >> 3);
-
+#if 0
       // vbus ovp, uvp, 超出工作電壓範圍就不工作
       if (vbus_avg > vbus_ovp || vbus_avg < vbus_uvp)
       {
@@ -640,6 +602,12 @@ int main(void)
       {
         if (sys_state == STATE_STOP) sys_state = STATE_SS;
       }
+#endif
+
+      if (power_on == 0)
+        sys_state = STATE_STOP; // power_on 控制回授工作或停止
+      else
+        sys_state = STATE_RUN;
 
 #if 1
       // --- 2. 核心狀態機邏輯 -----------------------------------------------------------------------
@@ -665,32 +633,17 @@ int main(void)
           if (llc_ss_cnt >= LLC_SS_COUNT)
           {
             sys_state = STATE_RUN;
-            // sys_state = STATE_PAUSE;	// 測試用
-            // 重要動作 =====================================
-            // vbus_comp_1 = YN_MIN; // 假設從一個極小的係數開始
-            // vbus_comp2 = (vbus_comp_1 >> 9);
-            // vbus_err_1 = 0; // 清除誤差歷史
-            // iac_err_2 = 0;
-            // iac_err_1 = 0;
-            // iac_comp_2 = YN_MIN;
-            // iac_comp_1 = YN_MIN;
-            // msg("%d %d %d %d \r\n", power_on_cmd, sys_state, vbus_comp_1, vbus_comp2);
-            // 1 4 196608, = 12 << 14
-            // E LOAD 抽太慢，導致 OVP ?? (是的)
           }
           break;
 
         case STATE_RUN: // 2
           // 根據電壓環、電流環調整頻率
-          /*
+
           if (++v_loop_cnt >= 10) // 10KHZ
           {
-            Vol_Loop_PFC_1P1Z();
-            // Vol_Loop_PFC_1P1Z();
+            Vol_Loop_LLC();
             v_loop_cnt = 0;
           }
-          */
-
           break;
       } // switch case
 #endif
@@ -698,7 +651,7 @@ int main(void)
     } // if tim0_trigger
 
     // --- 3. 非即時任務 (UI、通訊、Data Log) ---
-    // Handle_UART_Monitor();
+    Handle_UART_Monitor();
     // Capture_Dump_IfReady();
 
     // capture_continuous_task();