diff --git a/BLE/DLD154Pro_Peripheral_28K/APP/peripheral_main.c b/BLE/DLD154Pro_Peripheral_28K/APP/peripheral_main.c
index 6be52c4..a17c386 100644
--- a/BLE/DLD154Pro_Peripheral_28K/APP/peripheral_main.c
+++ b/BLE/DLD154Pro_Peripheral_28K/APP/peripheral_main.c
@@ -28,6 +28,7 @@
 #include <stdlib.h>
 #include "cmcng.h"
 #include "dbn_ble_srv.h"
+#include "CH59x_pwm.h"
 
 
 uint8_t g_flag_bt_state = 0;  //  0 蓝牙没有连接，1 有蓝牙连接
@@ -69,6 +70,23 @@ uint32_t g_sys_freq = 0;
 /* 光耦输入预留 (逻辑待定) */
 #define OPT_IN1               (GPIOB_ReadPortPin(GPIO_Pin_10))
 
+/*===========================================================================
+ * LEDB 红色呼吸灯 (PB23, PWM11)
+ *   PWM freq ≈ 60MHz / (PWM_CLK_DIV * 128) ≈ 5.86kHz @DIV=80
+ *   呼吸周期 ≈ (127*2*50ms) + 0.5s + 0.3s ≈ 13.5s
+ *===========================================================================*/
+#define  PWM_CLK_DIV          80
+#define  PWM_CYCLE            128          // 7-bit 分辨率 (0~127)
+#define  BREATH_STEP_DELAY    1            // 每 50ms 更新一次占空比 (步进平滑)
+#define  BREATH_FADE_IN       0
+#define  BREATH_HOLD_HIGH     1
+#define  BREATH_FADE_OUT      2
+#define  BREATH_HOLD_LOW      3
+
+static uint8_t  g_breath_phase = BREATH_FADE_IN;
+static uint8_t  g_breath_duty  = 0;
+static uint8_t  g_breath_tick  = 0;
+
 const uint8_t MAX_Store_Size = 80;
 uint8_t g_loop_power_up_state = 0;   // 开机启动时线圈是否连接
 uint8_t g_disconnect_active = 0;     // 当前线圈是否断开中 (1=断开)
@@ -368,11 +386,29 @@ void gpio_uart_init(void)
     GPIOA_ModeCfg(GPIO_Pin_8, GPIO_ModeOut_PP_5mA);
     RLY1_OFF;
 
-    /*--- 指示灯 (PB22=LEDA绿, PB23=LEDB红, 低电平有效) ---*/
-    GPIOB_SetBits(GPIO_Pin_22 | GPIO_Pin_23);
-    GPIOB_ModeCfg(GPIO_Pin_22 | GPIO_Pin_23, GPIO_ModeOut_PP_5mA);
+    /*--- LEDA 绿色 (PB22, GPIO, 低电平有效) ---*/
+    GPIOB_SetBits(GPIO_Pin_22);
+    GPIOB_ModeCfg(GPIO_Pin_22, GPIO_ModeOut_PP_5mA);
     LEDA_OFF;
-    LEDB_OFF;
+
+    /*--- LEDB 红色 (PB23, PWM11, 呼吸灯) ---*/
+    pwm_led_init();
+}
+
+/*===========================================================================
+ * pwm_led_init -- 初始化 LEDB (PB23) 红色呼吸灯 (PWM11)
+ *   PWM 频率 ≈ 60MHz / (80 * 128) ≈ 5.86kHz
+ *   初始占空比 = 0 (LED 灭)
+ *   注: PB23 需在 ISP 烧录时关闭外部复位功能 (RB_CFG_RESET_EN=0)
+ *===========================================================================*/
+static void pwm_led_init(void)
+{
+    GPIOB_SetBits(GPIO_Pin_23);
+    GPIOB_ModeCfg(GPIO_Pin_23, GPIO_ModeOut_PP_5mA);
+
+    PWMX_CLKCfg(PWM_CLK_DIV);
+    PWMX_CycleCfg(PWMX_Cycle_128);     // 128 级占空比分辨率
+    PWMX_ACTOUT(CH_PWM11, 0, Low_Level, ENABLE);  // 初始 duty=0, LED 灭
 }
 
 
@@ -1086,6 +1122,45 @@ void TMR1_IRQHandler(void)
 #endif
                 }
             }
+
+            /*--- LEDB 红色呼吸灯 (PWM11, 50ms tick) ---*/
+            g_breath_tick++;
+            switch (g_breath_phase) {
+                case BREATH_FADE_IN:   // 渐亮 0 → max, 每300ms一步
+                    if (g_breath_tick >= BREATH_STEP_DELAY) {
+                        g_breath_tick = 0;
+                        g_breath_duty++;
+                        PWM11_ActDataWidth(g_breath_duty);
+                        if (g_breath_duty >= PWM_CYCLE - 1) {
+                            g_breath_phase = BREATH_HOLD_HIGH;
+                            g_breath_tick = 0;
+                        }
+                    }
+                    break;
+                case BREATH_HOLD_HIGH: // 最亮保持 ~0.5s
+                    if (g_breath_tick >= 10) {
+                        g_breath_phase = BREATH_FADE_OUT;
+                        g_breath_tick = 0;
+                    }
+                    break;
+                case BREATH_FADE_OUT:  // 渐灭 max → 0, 每300ms一步
+                    if (g_breath_tick >= BREATH_STEP_DELAY) {
+                        g_breath_tick = 0;
+                        g_breath_duty--;
+                        PWM11_ActDataWidth(g_breath_duty);
+                        if (g_breath_duty == 0) {
+                            g_breath_phase = BREATH_HOLD_LOW;
+                            g_breath_tick = 0;
+                        }
+                    }
+                    break;
+                case BREATH_HOLD_LOW:  // 最暗保持 ~0.3s
+                    if (g_breath_tick >= 6) {
+                        g_breath_phase = BREATH_FADE_IN;
+                        g_breath_tick = 0;
+                    }
+                    break;
+            }
         }
 
         /*--- 线圈载波检测 & 继电器输出刷新 (每 5ms) ---*/