diff --git a/test/case52/src/testcase52.c b/test/case52/src/testcase52.c
index 3ddafc7..af30aa4 100755
--- a/test/case52/src/testcase52.c
+++ b/test/case52/src/testcase52.c
@@ -57,17 +57,21 @@ struct sockaddr_in                      server_addr_case52;                 // 
 
 #define MAP_SIZE_CASE52                 1028096					            // 
 #define MAP_SIZE_ST_CASE52              4096  					            // 4096
-// #define MAP_ADDR_TX_BASE_CASE52         0x84C00000                          // TX 数据位起始
+#define CTRL_BUFFER_SIZE                1024
+// #define MAP_ADDR_TX_BASE_CASE52      0x84C00000                          // TX 数据位起始
+#define UCP4008_CTRL_PHYSADDR           0x82000000                          // 接收开关
 #define MAP_ADDR_RX_BASE_CASE52         0x85001000                          // RX 数据位起始
 #define MAP_ADDR_RXFLAG_DATA_CASE52     0x85000000                          // wr 计数起始位
 
 int                                     mem_fd_case52;                      // 统一文件描述符
 ssize_t                                 send_len;
-// void                                    *map_base_tx_case52;                // TX映射地址 20块
+// void                                 *map_base_tx_case52;                // TX映射地址 20块
+void                                    *ucp4008_ctrl_mmap_base;            // 接受开关映射地址
 void                                    *map_base_rx_case52;                // RX映射地址 8块
 void                                    *map_base_rxf_case52;               // wr 计数映射地址
 uint8_t                                 w_idx, r_idx;                       // RX 信号
 uint16_t                                udp_data_buffer[8008];
+volatile uint32_t                       *mapped_addr;
 //----------------------------------------------------
 
 volatile uint32_t slot_ind_flag = 0;
@@ -110,6 +114,7 @@ void *handleUdpTransmission(void *arg)
         perror("open /dev/mem");
         exit(EXIT_FAILURE);
     }
+
     // TX
     // printf("[mmap]:/*************** mmap_tx ***************/\n");
     // map_base_tx_case52 = mmap(NULL, MAP_SIZE_CASE52, PROT_READ | PROT_WRITE, MAP_SHARED, mem_fd_case52, MAP_ADDR_TX_BASE_CASE52);
@@ -120,6 +125,7 @@ void *handleUdpTransmission(void *arg)
     //     exit(EXIT_FAILURE);
     // }
     // printf("[mmap]: tx ready\n");
+
     // RX
     printf("[mmap]:/*************** mmap_rx ***************/\n");
     map_base_rx_case52 = mmap(NULL, MAP_SIZE_CASE52, PROT_READ | PROT_WRITE, MAP_SHARED, mem_fd_case52, MAP_ADDR_RX_BASE_CASE52);
@@ -131,6 +137,7 @@ void *handleUdpTransmission(void *arg)
         exit(EXIT_FAILURE);
     }
     printf("[mmap]: rx ready\n");
+
     // RX_FLAG
     printf("[mmap]:/************** rx_flag ***************/\n");
     map_base_rxf_case52 = mmap(NULL, MAP_SIZE_ST_CASE52, PROT_READ | PROT_WRITE, MAP_SHARED, mem_fd_case52, MAP_ADDR_RXFLAG_DATA_CASE52);
@@ -143,6 +150,56 @@ void *handleUdpTransmission(void *arg)
         exit(EXIT_FAILURE);
     }
     printf("[mmap]: wr_idx ready\n");
+
+    // ucp4008_ctrl
+    ucp4008_ctrl_mmap_base = mmap(
+        NULL,
+        MAP_SIZE_ST_CASE52,
+        PROT_READ | PROT_WRITE,
+        MAP_SHARED,
+        mem_fd_case52,
+        UCP4008_CTRL_PHYSADDR
+    );
+    if (ucp4008_ctrl_mmap_base == MAP_FAILED) {
+        printf("[mmap]: ucp4008_ctrl mapping failed!\n");
+        perror("ucp4008_ctrl error");
+        close(mem_fd_case52);
+        exit(EXIT_FAILURE);
+    }
+    // udp_ctrl
+    char *ctrl_message = "ready";
+    sendto(sockfd_case52, ctrl_message, strlen(ctrl_message), 0,
+           (struct sockaddr *)&server_addr_case52, sizeof(server_addr_case52));
+    printf("[sendto]:%s\n", message);
+
+    char ctrl_buffer[CTRL_BUFFER_SIZE];
+    struct sockaddr_in from_addr;
+    socklen_t from_addr_len = sizeof(from_addr);
+    int recv_len
+    int strcmp_flag = 1;
+
+    while (strcmp_flag)
+    {
+        recv_len = recvfrom(sockfd_case52, ctrl_buffer, CTRL_BUFFER_SIZE, 0,
+                        (struct sockaddr *)&from_addr, &from_addr_len);
+        if (recv_len < 0) {
+            printf("[recv_len]:recv_len < 0\n");
+        }
+
+        ctrl_buffer[recv_len] = '\0';
+        printf("[recvfrom]:%s\n", ctrl_buffer);
+        if (strcmp(ctrl_buffer, "ok") == 0) {
+            //usleep(1000000);
+            printf("[mmap]:wr...\n");
+            mapped_addr = (volatile uint32_t *)ucp4008_ctrl_mmap_base;
+            *mapped_addr = 0xA5A55A5A;
+            print("[mmap]: wr 0xA5A55A5A done :) \n");
+            strcmp_flag = 0;
+        } else {
+            printf("[recvfrom]:strcmp no ok!\n");
+        }   
+    }
+    
     // 初始化消费者索引
     /************************************************************************************** */
     r_idx = 0;
@@ -194,6 +251,12 @@ void *handleUdpTransmission(void *arg)
     // printf("[while(1)]:/*************************************/\n");
     // size_t current_pos = 0;
     // uint16_t value_mem = 0;
+
+
+
+
+
+
     uint8_t block_n = 0;
     uint8_t cut_i = 0;
     while (1)