diff --git a/inc/rs485_protocol.h b/inc/rs485_protocol.h
index d046836..6080a0c 100644
--- a/inc/rs485_protocol.h
+++ b/inc/rs485_protocol.h
@@ -35,9 +35,20 @@ typedef enum
     VALIDATION_LENGTH_ERROR = 8
 } validation_result_t;
 
+
+typedef enum
+{
+    PS_LEN = 0,
+    PS_TYPE,
+    PS_PAYLOAD,
+    PS_CRC,
+    PS_NULL
+} packet_state;
+
 /******************************************************************************/
 
-void process_command(uint8_t* cmd, size_t length);
+// void process_command(uint8_t* cmd, size_t length);
+void process_command(void);
 
 uint8_t calculate_crc(uint8_t data[], uint8_t data_length);
 
@@ -53,4 +64,8 @@ void gd60914_tempture_report(void);
 
 void ultrasonic_distance_report(void);
 
+void process_printer(void);
+
+void get_command (void);
+
 #endif //RS485_PROTOCOL_H
diff --git a/ld/gd32e23x_gcc.ld b/ld/gd32e23x_gcc.ld
index a811994..4773fab 100644
--- a/ld/gd32e23x_gcc.ld
+++ b/ld/gd32e23x_gcc.ld
@@ -1,8 +1,8 @@
 /* memory map */
 MEMORY
 {
-  FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 16K
-  RAM (xrw)       : ORIGIN = 0x20000000, LENGTH = 4K
+  FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 64K
+  RAM (xrw)       : ORIGIN = 0x20000000, LENGTH = 8K
 }
 
 ENTRY(Reset_Handler)
diff --git a/src/gd32e23x_it.c b/src/gd32e23x_it.c
index 0bfcec3..bccf806 100644
--- a/src/gd32e23x_it.c
+++ b/src/gd32e23x_it.c
@@ -174,7 +174,7 @@ void USART0_IRQHandler(void) {
     if (RESET != usart_interrupt_flag_get(USART0, USART_INT_FLAG_IDLE)) {
         usart_interrupt_flag_clear(USART0, USART_INT_FLAG_IDLE);
 
-        process_command(rx_buffer, rx_index); // 处理指令
+        // process_command(rx_buffer, rx_index); // 处理指令
 
         rx_index = 0; // 重置缓冲区索引
         return;
diff --git a/src/rs485_protocol.c b/src/rs485_protocol.c
index 787cbc4..9658c95 100644
--- a/src/rs485_protocol.c
+++ b/src/rs485_protocol.c
@@ -6,48 +6,53 @@
 
 extern uint8_t g_temperature_uint8[2];
 
-void process_command(uint8_t *cmd, size_t length) {
-    char combined_str[3];
-    validation_result_t validate = VALIDATION_SUCCESS;
+static uint8_t buffer_length = 0;
+static int serial_count = 0;
+static uint8_t serial_char = 0x00;
+static packet_state state = PS_NULL;
 
-    validate = (validate_package_header(cmd) |
-                validate_package_type(cmd) |
-                validate_data_length(cmd) |
-                validate_package_crc(cmd, length));
-
-    switch (validate) {
-    case VALIDATION_SUCCESS:
-        // printf("%d", length);
-            sprintf(combined_str, "%c%c", cmd[3], cmd[4]);
-        if (strcmp(combined_str, "M1") == 0) {
-            ultrasonic_distance_report();
-        } else if (strcmp(combined_str, "M2") == 0) {
-            gd60914_tempture_report();
-        } else if (strcmp(combined_str, "M3") == 0)
-        {
-            printf("%c%c%c%c%c%c", 0xB5, 0xF1, 0x02, 0x6F, 0x6B, 0xCC);
-            fwdgt_reset_mcu();
-        } else {
-            printf("%c%c%c%c%c%c%c", 0xB5, 0xF0, 0x03, 0x65, 0x72, 0x72, 0x3C);
-            return;
-        }
-        break;
-    case VALIDATION_CRC_ERROR:
-        printf("%c%c%c%c%c%c%c", 0xB5, 0xF1, 0x03, 0x65, 0x72, 0x72, 0x3D);
-        break;
-    case VALIDATION_HEADER_ERROR:
-        printf("%c%c%c%c%c%c%c", 0xB5, 0xF2, 0x03, 0x65, 0x72, 0x72, 0x3E);
-        break;
-    case VALIDATION_TYPE_ERROR:
-        printf("%c%c%c%c%c%c%c", 0xB5, 0xF3, 0x03, 0x65, 0x72, 0x72, 0x3F);
-        break;
-    case VALIDATION_LENGTH_ERROR:
-        printf("%c%c%c%c%c%c%c", 0xB5, 0xF4, 0x03, 0x65, 0x72, 0x72, 0x40);
-        break;
-    default:
-        break;
-    }
-}
+// void process_command(uint8_t *cmd, size_t length) {
+//     char combined_str[3];
+//     validation_result_t validate = VALIDATION_SUCCESS;
+//
+//     validate = (validate_package_header(cmd) |
+//                 validate_package_type(cmd) |
+//                 validate_data_length(cmd) |
+//                 validate_package_crc(cmd, length));
+//
+//     switch (validate) {
+//     case VALIDATION_SUCCESS:
+//         // printf("%d", length);
+//             sprintf(combined_str, "%c%c", cmd[3], cmd[4]);
+//         if (strcmp(combined_str, "M1") == 0) {
+//             ultrasonic_distance_report();
+//         } else if (strcmp(combined_str, "M2") == 0) {
+//             gd60914_tempture_report();
+//         } else if (strcmp(combined_str, "M3") == 0)
+//         {
+//             printf("%c%c%c%c%c%c", 0xB5, 0xF1, 0x02, 0x6F, 0x6B, 0xCC);
+//             fwdgt_reset_mcu();
+//         } else {
+//             printf("%c%c%c%c%c%c%c", 0xB5, 0xF0, 0x03, 0x65, 0x72, 0x72, 0x3C);
+//             return;
+//         }
+//         break;
+//     case VALIDATION_CRC_ERROR:
+//         printf("%c%c%c%c%c%c%c", 0xB5, 0xF1, 0x03, 0x65, 0x72, 0x72, 0x3D);
+//         break;
+//     case VALIDATION_HEADER_ERROR:
+//         printf("%c%c%c%c%c%c%c", 0xB5, 0xF2, 0x03, 0x65, 0x72, 0x72, 0x3E);
+//         break;
+//     case VALIDATION_TYPE_ERROR:
+//         printf("%c%c%c%c%c%c%c", 0xB5, 0xF3, 0x03, 0x65, 0x72, 0x72, 0x3F);
+//         break;
+//     case VALIDATION_LENGTH_ERROR:
+//         printf("%c%c%c%c%c%c%c", 0xB5, 0xF4, 0x03, 0x65, 0x72, 0x72, 0x40);
+//         break;
+//     default:
+//         break;
+//     }
+// }
 
 uint8_t calculate_crc(uint8_t data[], uint8_t data_length) {
     uint8_t crc = 0;
@@ -121,3 +126,27 @@ void ultrasonic_distance_report(void) {
     printf("%c%c", package_data[0], package_data[1]);
     printf("%c", calculate_crc(combined_data, 6));
 }
+
+
+void process_printer(void) {
+    if(buffer_length < (RX_BUFFER_SIZE - 1)) {
+        get_command();
+    }
+    if(buffer_length) {
+        process_command();
+    }
+}
+
+void get_command (void) {
+    static uint8_t testchar=0;
+    static uint8_t check_sum = 0;
+    static uint8_t packet_len ;
+    static uint8_t packet_type;
+    state = PS_NULL;
+    serial_count = 0;
+    serial_char=0;
+}
+
+void process_command(void) {
+
+}
\ No newline at end of file