390 lines
8.8 KiB
C++
390 lines
8.8 KiB
C++
/*******************************************************************************
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Titre : OpenCR
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Date : 6 février 2019
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Auteur : Maxime Desmarais-Laporte
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Descritpion :
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Specifications :
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Baud for motors : 57600 b/s
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Adress for motors : 11 and 12 and 13
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*******************************************************************************/
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#include <DynamixelWorkbench.h>
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#if defined(__OPENCM904__)
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#define DEVICE_NAME "3"
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#elif defined(__OPENCR__)
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#define DEVICE_NAME ""
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#endif
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#define STRING_BUF_NUM 64
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#define MINTICK 0
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#define MAXTICK 1048575
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// 0 = not reverse, 1 = reverse
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uint8_t X_REVERSE = 0;
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uint8_t Y_REVERSE = 1;
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uint8_t Z_REVERSE = 0;
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const String HOMING_OFFSET = "Homing_Offset";
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const String OPERATING_MODE = "Operating_Mode";
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const String PRESENT_POSITION = "Present_Position";
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const String GOAL_POSITION = "Goal_Position";
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String cmd[STRING_BUF_NUM];
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DynamixelWorkbench dxl_wb;
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uint8_t get_id[16];
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uint8_t scan_cnt = 0;
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uint8_t ping_cnt = 0;
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const char *NULL_POINTER = NULL;
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bool isEmegencyState = false;
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// Motors Propertys :
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uint8_t idX = 11;
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uint8_t idY = 12;
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uint8_t idZ = 13;
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// Mecanicals propertys:
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const float pouleyPitch = 2; //mm
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const int nbTheets = 20;
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const int resMotorTick = 4096; //Ticks per revolution
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int32_t tickFromMm = resMotorTick/(pouleyPitch*nbTheets);
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// Limit Switch propertys
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const int xSwitchPin = 8;
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const int ySwitchPin = 9;
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const int zSwitchPin = 10;
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const int emergencySwitchPin = 2; // intrupt pin
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// Homing variables
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bool homing = false;
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const int homeOffsetX = 10*tickFromMm;
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const int homeOffsetY = 10*tickFromMm;
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const int homeOffsetZ = 10*tickFromMm;
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// Fonctions prototypes :
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void Begin(uint32_t baud);
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void Ping(int identification);
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void Scan();
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void Joint(uint8_t id, uint16_t goal);
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void Wheel(uint8_t id, int32_t goal);
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void Torque_on(uint8_t id);
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void Torque_off(uint8_t id);
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void Write(uint8_t id, uint32_t value, String commande);
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int32_t Read(uint8_t id, String commande);
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void Led(uint8_t id, bool state);
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void TorqueOffAll();
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void OffsetAxe(uint8_t id, int offset);
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void LimiteSwitch();
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int MovingTick(uint8_t id, int32_t value);
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int Homing();
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int HomingAxis(uint8_t id, int speed, int switchPin, int offset);
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uint8_t getIdFromChar(char letter);
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// Initialisation :
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void setup()
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{
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// Initialisation des pins :
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pinMode(xSwitchPin, INPUT_PULLUP);
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pinMode(ySwitchPin, INPUT_PULLUP);
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pinMode(zSwitchPin, INPUT_PULLUP);
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attachInterrupt(digitalPinToInterrupt(emergencySwitchPin), LimiteSwitch, FALLING);
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Serial.begin(57600);
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while(!Serial); // Open a Serial Monitor
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//Motor Initialisation Section :
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Begin((uint32_t)57600);
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Ping(idX);
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Ping(idY);
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Ping(idZ);
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Scan();
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delay(1000);
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Torque_off(idX);
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Torque_off(idY);
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Torque_off(idZ);
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Write(idX, 4, OPERATING_MODE);
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Write(idY, 4, OPERATING_MODE);
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Write(idZ, 4, OPERATING_MODE);
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Write(idX, 0, HOMING_OFFSET);
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Write(idY, 0, HOMING_OFFSET);
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Write(idZ, 0, HOMING_OFFSET);
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dxl_wb.writeRegister(idX, 10, 1, &X_REVERSE, &NULL_POINTER);
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dxl_wb.writeRegister(idY, 10, 1, &Y_REVERSE, &NULL_POINTER);
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dxl_wb.writeRegister(idZ, 10, 1, &Z_REVERSE, &NULL_POINTER);
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Torque_on(idX);
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Torque_on(idY);
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Torque_on(idZ);
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}
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// Main Program
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void loop()
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{
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if(isEmegencyState)
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setEmergency();
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if (Serial.available())
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{
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if(!isEmegencyState)
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{
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String read_string = Serial.readStringUntil('\n');
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String words[] = {"", "", ""};
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int start = 0;
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int wordIndex = 0;
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int statut[3] = {0, 0, 0};
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for(int i = 1; i < read_string.length(); i++)
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{
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if(read_string.charAt(i) == ' ')
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{
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words[wordIndex++] = read_string.substring(start, i);
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start = i+1;
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}
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}
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words[wordIndex] = read_string.substring(start, read_string.length());
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Serial.println("2");
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if(words[0] == "G0")
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{
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for(int i = 1; i < wordIndex+1; i++)
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{
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if(words[i].length() > 1)
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{
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float value = words[i].substring(1, words[i].length()).toFloat();
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uint8_t idMotor = getIdFromChar((char)words[i].charAt(0));
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if(idMotor == -1)
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Serial.println("-1");
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else
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statut[i] = MovingTick(idMotor, value*tickFromMm);
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}
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else
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Serial.println("-1");
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}
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if((statut[0] == 1 || statut[0] == 0) && (statut[1] == 1 || statut[1] == 0) && (statut[2] == 1|| statut[2] == 0)){
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Serial.println("1");
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}
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else{
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Serial.println("-1");
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}
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}
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else if(words[0] == "G28"){
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Serial.println(Homing());
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}
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else if(words[0] == "M18"){
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TorqueOffAll();
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Serial.println("1");
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}
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else if(words[0] == "M112"){
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setEmergency();
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Led(idX, 1);
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Led(idY, 1);
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Led(idZ, 1);
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Serial.println("1");
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}
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else if(words[0] == "M1")
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{
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TorqueOffAll();
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Write(idX, -Read(idX, PRESENT_POSITION), HOMING_OFFSET);
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Write(idY, -Read(idY, PRESENT_POSITION), HOMING_OFFSET);
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Write(idZ, -Read(idZ, PRESENT_POSITION), HOMING_OFFSET);
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TorqueOnAll();
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Serial.println("1");
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}
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else
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{
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Serial.println("-1");
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}
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}
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else
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{
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Serial.println("-2");
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}
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}
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}
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uint8_t getIdFromChar(char letter)
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{
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if(letter == 'X')
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return idX;
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else if(letter == 'Y')
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return idY;
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else if(letter == 'Z')
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return idZ;
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else
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return -1;
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}
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int Homing()
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{
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int state = 0;
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homing = true;
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state += HomingAxis(idZ, -50, xSwitchPin, homeOffsetZ);
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state += HomingAxis(idY, -100, xSwitchPin, homeOffsetY);
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state += HomingAxis(idX, -100, xSwitchPin, homeOffsetX);
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homing = false;
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return state == 3 ? 1 : -1;
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}
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int HomingAxis(uint8_t id, int speed, int switchPin, int offset)
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{
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Torque_off(id);
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Write(id, 0, HOMING_OFFSET);
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Torque_on(id);
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Wheel(id, speed);
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while(digitalRead(switchPin));
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OffsetAxe(id, offset);
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Write(id, 4, OPERATING_MODE);
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return MovingTick(id, 0);
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}
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void OffsetAxe(uint8_t id, int offset){
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int32_t posPresent = Read(id, PRESENT_POSITION);
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int32_t homePosition = - posPresent - offset;
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Torque_off(id);
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Write(id, homePosition, HOMING_OFFSET);
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}
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int MovingTick(uint8_t id, int32_t value){
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int32_t CurrentPosition = Read(id, PRESENT_POSITION);
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bool Forward = value > CurrentPosition;
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if((Forward && (CurrentPosition < MAXTICK)) || (!Forward && (CurrentPosition > MINTICK)))
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{
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Torque_on(id);
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Write(id, value, GOAL_POSITION);
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}
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else
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{
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Torque_off(id);
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return -1;
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}
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if(Forward){
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while(CurrentPosition < value-1 && !isEmegencyState){
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CurrentPosition = Read(id, PRESENT_POSITION);
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if(CurrentPosition >= MAXTICK && !homing){
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Torque_off(id);
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return -1;
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}
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}
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}
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else {
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while(CurrentPosition > value+1 && !isEmegencyState){
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CurrentPosition = Read(id, PRESENT_POSITION);
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if(CurrentPosition <= MINTICK && !homing){
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Torque_off(id);
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return -1;
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}
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}
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}
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return 1;
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}
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void LimiteSwitch(){
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if(!homing){
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TorqueOffAll();
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Led(idX, !digitalRead(xSwitchPin));
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Led(idY, !digitalRead(ySwitchPin));
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Led(idZ, !digitalRead(zSwitchPin));
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isEmegencyState = true;
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}
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}
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void setEmergency()
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{
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TorqueOffAll();
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Led(idX, !digitalRead(xSwitchPin));
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Led(idY, !digitalRead(ySwitchPin));
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Led(idZ, !digitalRead(zSwitchPin));
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}
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//########################
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// Low Levels functions :
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//########################
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void Begin(uint32_t baud){
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if (cmd[1] == '\0')
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cmd[1] = String("57600");
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dxl_wb.init(DEVICE_NAME, baud);
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}
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void Ping(int identification){
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get_id[ping_cnt] = identification;
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uint16_t model_number = 0;
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dxl_wb.ping(get_id[ping_cnt], &model_number, &NULL_POINTER);
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}
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void Scan(){
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uint8_t range = 253;
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dxl_wb.scan(get_id, &scan_cnt, range);
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}
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void Joint(uint8_t id, int32_t goal){
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dxl_wb.jointMode(id, 0, 0, &NULL_POINTER);
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dxl_wb.goalPosition(id, goal, &NULL_POINTER);
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}
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void Wheel(uint8_t id, int32_t goal){
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dxl_wb.wheelMode(id, 0, &NULL_POINTER);
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dxl_wb.goalVelocity(id, goal, &NULL_POINTER);
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}
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void Torque_on(uint8_t id){
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dxl_wb.torqueOn(id, &NULL_POINTER);
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}
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void Torque_off(uint8_t id){
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dxl_wb.torqueOff(id, &NULL_POINTER);
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}
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void Write(uint8_t id, uint32_t value, String commande){
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dxl_wb.writeRegister(id, commande.c_str(), value, &NULL_POINTER);
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}
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int32_t Read(uint8_t id, String commande){
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int32_t data = 0;
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dxl_wb.readRegister(id, commande.c_str(), &data, &NULL_POINTER);
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return data;
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}
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void Led(uint8_t id, bool state){
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Write(id, (uint32_t)state, "LED");
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}
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void TorqueOffAll(){
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Torque_off(idX);
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Torque_off(idY);
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Torque_off(idZ);
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}
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void TorqueOnAll(){
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Torque_on(idX);
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Torque_on(idY);
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Torque_on(idZ);
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}
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