diff --git a/components/sensors/m3078/m3078_code_scaner.cpp b/components/sensors/m3078/m3078_code_scaner.cpp
index 4f95274..328c3c9 100644
--- a/components/sensors/m3078/m3078_code_scaner.cpp
+++ b/components/sensors/m3078/m3078_code_scaner.cpp
@@ -34,13 +34,17 @@ void M3078CodeScanner::trigger() {
   ZLOGI(TAG, "trigger");
   clearIdinfo();
   m_triggerGpio.setState(0);
-  zos_delay(3);
+  zos_delay(10);
   m_uart.clearRxData();
   m_triggerGpio.setState(1);
+  m_trigger            = true;
+  creg.m_module_status = 1;
 }
 void M3078CodeScanner::stopTrigger() {
   ZLOGI(TAG, "stopTrigger");
   m_triggerGpio.setState(0);
+  m_trigger            = false;
+  creg.m_module_status = 0;
 }
 bool  M3078CodeScanner::idInfoIsReady() { return m_codeisready; }
 char* M3078CodeScanner::getIdinfo() { return codecache; }
@@ -79,6 +83,7 @@ int32_t M3078CodeScanner::code_scaner_read_scaner_result(uint8_t* result, int32_
   }
   *len = codecachelen;
   memcpy(result, codecache, codecachelen);
+  ZLOGI(TAG, "code_scaner_read_scaner_result: %s(%d)", codecache, codecachelen);
   return 0;
 }
 int32_t M3078CodeScanner::get_id_info_len(int32_t* len) {
@@ -99,11 +104,9 @@ int32_t M3078CodeScanner::module_xxx_reg(int32_t param_id, bool read, int32_t& v
   return 0;
 }
 int32_t M3078CodeScanner::read_status() {
-  if (m_triggerGpio.getState() == 0) {
+  if (creg.m_module_status == 0) {
     return 0;
   }
-  if (m_codeisready) {
-    return 0;
-  }
-  return 1;
+
+  return m_codeisready;
 }
diff --git a/components/sensors/m3078/m3078_code_scaner.hpp b/components/sensors/m3078/m3078_code_scaner.hpp
index 72302d3..9d907c8 100644
--- a/components/sensors/m3078/m3078_code_scaner.hpp
+++ b/components/sensors/m3078/m3078_code_scaner.hpp
@@ -54,6 +54,7 @@ class M3078CodeScanner : public ZIModule, public ZICodeScaner {
   int32_t codecachelen   = 0;
   bool    m_codeisready  = false;
 
+
  public:
   M3078CodeScanner(){};
   ~M3078CodeScanner(){};
@@ -90,6 +91,7 @@ class M3078CodeScanner : public ZIModule, public ZICodeScaner {
   virtual int32_t module_xxx_reg(int32_t param_id, bool read, int32_t& val) override;
   virtual int32_t module_stop() override;
 
+
  public:
   virtual int32_t code_scaner_start_scan() override;
   virtual int32_t code_scaner_stop_scan() override;
diff --git a/components/zcancmder/zcan_protocol_parser.cpp b/components/zcancmder/zcan_protocol_parser.cpp
index a305b0b..7305d76 100644
--- a/components/zcancmder/zcan_protocol_parser.cpp
+++ b/components/zcancmder/zcan_protocol_parser.cpp
@@ -47,7 +47,13 @@ void ZCanProtocolParser::initialize(IZCanReceiver* cancmder) {
 
   REGFN(board_read_ext_io);
   REGFN(board_write_ext_io);
+  REGFN(board_read_muti_io);
 
+  REGFN(code_scaner_start_scan);
+  REGFN(code_scaner_stop_scan);
+  REGFN(code_scaner_result_is_ready);
+  REGFN(code_scaner_get_result_length);
+  REGFN(code_scaner_read_scaner_result);
 #if 0
   REGFN(xymotor_enable);
   REGFN(xymotor_move_by);
@@ -335,7 +341,7 @@ int32_t ZCanProtocolParser::code_scaner_stop_scan(cmdcontxt_t* cxt) {
 }
 
 int32_t ZCanProtocolParser::code_scaner_result_is_ready(cmdcontxt_t* cxt) {
-  CHECK_AND_GET_MODULE(1);
+  CHECK_AND_GET_MODULE(0);
   int32_t* ack = (int32_t*)cxt->ackbuf;
   cxt->acklen  = 4;
   return module->code_scaner_result_is_ready(&ack[0]);
@@ -350,7 +356,12 @@ int32_t ZCanProtocolParser::code_scaner_get_result_length(cmdcontxt_t* cxt) {
 
 int32_t ZCanProtocolParser::code_scaner_read_scaner_result(cmdcontxt_t* cxt) {
   CHECK_AND_GET_MODULE(0);
-  return module->code_scaner_read_scaner_result(cxt->ackbuf, &cxt->acklen);
+  cxt->acklen = ZCANCMD_READ_BUF_MAX_SIZE;
+  int32_t suc = module->code_scaner_read_scaner_result(cxt->ackbuf, &cxt->acklen);
+  if (suc != 0) {
+    cxt->acklen = 0;
+  }
+  return suc;
 }
 #undef MODULE_CLASS