Update: Sync Read Write Position Add

Author: ROBOTIS-David

examples/advanced/sync_read_write_position/sync_read_write_position.ino

@@ -0,0 +1,216 @@
+/*******************************************************************************
+* Copyright 2016 ROBOTIS CO., LTD.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*******************************************************************************/
+
+#include <Dynamixel2Arduino.h>
+
+// Please modify it to suit your hardware.
+#if defined(ARDUINO_AVR_UNO) || defined(ARDUINO_AVR_MEGA2560) // When using DynamixelShield
+  #include <SoftwareSerial.h>
+  SoftwareSerial soft_serial(7, 8); // DYNAMIXELShield UART RX/TX
+  #define DXL_SERIAL   Serial
+  #define DEBUG_SERIAL soft_serial
+  const uint8_t DXL_DIR_PIN = 2; // DYNAMIXEL Shield DIR PIN
+#elif defined(ARDUINO_SAM_DUE) // When using DynamixelShield
+  #define DXL_SERIAL   Serial
+  #define DEBUG_SERIAL SerialUSB
+  const uint8_t DXL_DIR_PIN = 2; // DYNAMIXEL Shield DIR PIN
+#elif defined(ARDUINO_SAM_ZERO) // When using DynamixelShield
+  #define DXL_SERIAL   Serial1
+  #define DEBUG_SERIAL SerialUSB
+  const uint8_t DXL_DIR_PIN = 2; // DYNAMIXEL Shield DIR PIN
+#elif defined(ARDUINO_OpenCM904) // When using official ROBOTIS board with DXL circuit.
+  #define DXL_SERIAL   Serial3 //OpenCM9.04 EXP Board's DXL port Serial. (Serial1 for the DXL port on the OpenCM 9.04 board)
+  #define DEBUG_SERIAL Serial
+  const uint8_t DXL_DIR_PIN = 22; //OpenCM9.04 EXP Board's DIR PIN. (28 for the DXL port on the OpenCM 9.04 board)
+#elif defined(ARDUINO_OpenCR) // When using official ROBOTIS board with DXL circuit.
+  // For OpenCR, there is a DXL Power Enable pin, so you must initialize and control it.
+  // Reference link : https://github.com/ROBOTIS-GIT/OpenCR/blob/master/arduino/opencr_arduino/opencr/libraries/DynamixelSDK/src/dynamixel_sdk/port_handler_arduino.cpp#L78
+  #define DXL_SERIAL   Serial3
+  #define DEBUG_SERIAL Serial
+  const uint8_t DXL_DIR_PIN = 84; // OpenCR Board's DIR PIN.    
+#else // Other boards when using DynamixelShield
+  #define DXL_SERIAL   Serial1
+  #define DEBUG_SERIAL Serial
+  const uint8_t DXL_DIR_PIN = 2; // DYNAMIXEL Shield DIR PIN
+#endif
+
+
+/* syncRead
+  Structures containing the necessary information to process the 'syncRead' packet.
+
+  typedef struct XELInfoBulkRead{
+    uint16_t addr;
+    uint16_t addr_length;
+    uint8_t *p_recv_buf;
+    uint8_t id;
+    uint8_t error;
+  } __attribute__((packed)) XELInfoBulkRead_t;
+
+  typedef struct InfoBulkReadInst{
+    XELInfoBulkRead_t* p_xels;
+    uint8_t xel_count;
+    bool is_info_changed;
+    InfoSyncBulkBuffer_t packet;
+  } __attribute__((packed)) InfoBulkReadInst_t;
+*/
+
+/* syncWrite
+  Structures containing the necessary information to process the 'syncWrite' packet.
+
+  typedef struct XELInfoBulkWrite{
+    uint16_t addr;
+    uint16_t addr_length;
+    uint8_t* p_data;
+    uint8_t id;
+  } __attribute__((packed)) XELInfoBulkWrite_t;
+
+  typedef struct InfoBulkWriteInst{
+    XELInfoBulkWrite_t* p_xels;
+    uint8_t xel_count;
+    bool is_info_changed;
+    InfoSyncBulkBuffer_t packet;
+  } __attribute__((packed)) InfoBulkWriteInst_t;
+*/
+
+const uint8_t BROADCAST_ID = 254;
+const float DYNAMIXEL_PROTOCOL_VERSION = 2.0;
+const uint8_t DXL_ID_CNT = 2;
+const uint8_t DXL_ID_LIST[DXL_ID_CNT] = {1, 2};
+const uint16_t user_pkt_buf_cap = 128;
+uint8_t user_pkt_buf[user_pkt_buf_cap];
+
+const uint16_t SR_START_ADDR = 132; // Starting Data Addr, Can differ Depending on what address to access
+const uint16_t SR_ADDR_LEN = 4; // Data Length, Can differ depending on how many address to access. 
+const uint16_t SW_START_ADDR = 116; 
+const uint16_t SW_ADDR_LEN = 4;
+typedef struct sr_data{
+  int32_t present_position;
+} __attribute__((packed)) sr_data_t;
+typedef struct sw_data{
+  int32_t goal_position;
+} __attribute__((packed)) sw_data_t;
+
+
+sr_data_t sr_data[DXL_ID_CNT];
+DYNAMIXEL::InfoSyncReadInst_t sr_infos;
+DYNAMIXEL::XELInfoSyncRead_t info_xels_sr[DXL_ID_CNT];
+
+sw_data_t sw_data[DXL_ID_CNT];
+DYNAMIXEL::InfoSyncWriteInst_t sw_infos;
+DYNAMIXEL::XELInfoSyncWrite_t info_xels_sw[DXL_ID_CNT];
+
+Dynamixel2Arduino dxl(DXL_SERIAL, DXL_DIR_PIN);
+
+//This namespace is required to use Control table item names
+using namespace ControlTableItem;
+
+int32_t goal_position[2] = {1024, 2048};
+uint8_t direction = 0;
+
+void setup() {
+  // put your setup code here, to run once:
+  uint8_t i;
+  pinMode(LED_BUILTIN, OUTPUT);
+  DEBUG_SERIAL.begin(115200);
+  dxl.begin(57600);
+  dxl.setPortProtocolVersion(DYNAMIXEL_PROTOCOL_VERSION);
+
+  for(i=0; i<DXL_ID_CNT; i++){
+    dxl.torqueOff(DXL_ID_LIST[i]);
+    dxl.setOperatingMode(DXL_ID_LIST[i], OP_POSITION);
+  }
+  dxl.torqueOn(BROADCAST_ID);
+
+  // Fill the members of structure to syncRead using external user packet buffer
+  sr_infos.packet.p_buf = user_pkt_buf;
+  sr_infos.packet.buf_capacity = user_pkt_buf_cap;
+  sr_infos.packet.is_completed = false;
+  sr_infos.addr = SR_START_ADDR;
+  sr_infos.addr_length = SR_ADDR_LEN;
+  sr_infos.p_xels = info_xels_sr;
+  sr_infos.xel_count = 0;  
+
+  for(i=0; i<DXL_ID_CNT; i++){
+    info_xels_sr[i].id = DXL_ID_LIST[i];
+    info_xels_sr[i].p_recv_buf = (uint8_t*)&sr_data[i];
+    sr_infos.xel_count++;
+  }
+  sr_infos.is_info_changed = true;
+
+  // Fill the members of structure to syncWrite using internal packet buffer
+  sw_infos.packet.p_buf = nullptr;
+  sw_infos.packet.is_completed = false;
+  sw_infos.addr = SW_START_ADDR;
+  sw_infos.addr_length = SW_ADDR_LEN;
+  sw_infos.p_xels = info_xels_sw;
+  sw_infos.xel_count = 0;
+
+  for(i=0; i<DXL_ID_CNT; i++){
+    info_xels_sw[i].id = DXL_ID_LIST[i];
+    info_xels_sw[i].p_data = (uint8_t*)&sw_data[i].goal_position;
+    sw_infos.xel_count++;
+  }
+  sw_infos.is_info_changed = true;
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+  static uint32_t try_count = 0;
+  uint8_t i, recv_cnt;
+  
+  for(i=0; i<DXL_ID_CNT; i++){
+    sw_data[i].goal_position = goal_position[direction];
+  }
+  sw_infos.is_info_changed = true;
+
+  DEBUG_SERIAL.print("\n>>>>>> Sync Instruction Test : ");
+  DEBUG_SERIAL.println(try_count++);
+  if(dxl.syncWrite(&sw_infos) == true){
+    DEBUG_SERIAL.println("[SyncWrite] Success");
+    for(i=0; i<sw_infos.xel_count; i++){
+      DEBUG_SERIAL.print("  ID: ");DEBUG_SERIAL.println(sw_infos.p_xels[i].id);
+      DEBUG_SERIAL.print("\t Goal Position: ");DEBUG_SERIAL.println(sw_data[i].goal_position);
+    }
+    if(direction == 0)
+      direction = 1;
+    else
+      direction = 0;
+  }else{
+    DEBUG_SERIAL.print("[SyncWrite] Fail, Lib error code: ");
+    DEBUG_SERIAL.print(dxl.getLastLibErrCode());
+  }
+  DEBUG_SERIAL.println();
+
+  delay(250);
+
+  recv_cnt = dxl.syncRead(&sr_infos);
+  if(recv_cnt > 0){
+    DEBUG_SERIAL.print("[SyncRead] Success, Received ID Count: ");
+    DEBUG_SERIAL.println(recv_cnt);
+    for(i=0; i<recv_cnt; i++){
+      DEBUG_SERIAL.print("  ID: ");DEBUG_SERIAL.print(sr_infos.p_xels[i].id);
+      DEBUG_SERIAL.print(", Error: ");DEBUG_SERIAL.println(sr_infos.p_xels[i].error);
+      DEBUG_SERIAL.print("\t Present Position: ");DEBUG_SERIAL.println(sr_data[i].present_position);
+    }
+  }else{
+    DEBUG_SERIAL.print("[SyncRead] Fail, Lib error code: ");
+    DEBUG_SERIAL.println(dxl.getLastLibErrCode());
+  }
+  DEBUG_SERIAL.println("=======================================================");
+
+  digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
+  delay(750);
+}