RmdMotorCAN.cpp

Go to the documentation of this file.

/*
 * RmdMotorCAN.cpp
 *
 *  Created on: Dec 7, 2024
 *      Author: Yannick
 */
 
 
#include "target_constants.h"
#ifdef RMDCAN
#include "RmdMotorCAN.h"
 
bool RmdMotorCAN1::inUse = false;
ClassIdentifier RmdMotorCAN1::info = {
         .name = "RMD MyActuator (1)" ,
         .id=CLSID_MOT_RMD1,    // 11
};
bool RmdMotorCAN2::inUse = false;
ClassIdentifier RmdMotorCAN2::info = {
         .name = "RMD MyActuator (2)" ,
         .id=CLSID_MOT_RMD2,    // 12
};
 
const ClassIdentifier RmdMotorCAN1::getInfo(){
    return info;
}
 
const ClassIdentifier RmdMotorCAN2::getInfo(){
    return info;
}
 
bool RmdMotorCAN1::isCreatable(){
    return !RmdMotorCAN1::inUse; // Creatable if not already in use for example by another axis
}
 
bool RmdMotorCAN2::isCreatable(){
    return !RmdMotorCAN2::inUse; // Creatable if not already in use for example by another axis
}
 
 
 
RmdMotorCAN::RmdMotorCAN(uint8_t instance) : CommandHandler("rmd", CLSID_MOT_RMD1,instance),  Thread("RMD", RMD_THREAD_MEM, RMD_THREAD_PRIO), motorId(instance) {
    if(motorId == 0){
        nodeId = 1;
    }else if(motorId == 1){
        nodeId = 2; // defaults
    }
    restoreFlash();
    setCanFilter();
 
    if(port->getSpeedPreset() < 3){
        port->setSpeedPreset(3); // Minimum 250k. Default 1M
    }
 
    this->port->setSilentMode(false);
    this->registerCommands();
    this->port->takePort();
    this->Start();
}
 
RmdMotorCAN::~RmdMotorCAN() {
    this->port->removeCanFilter(filterId);
    stopMotor();
}
 
 
void RmdMotorCAN::restoreFlash(){
    uint16_t data = 0;
    if(Flash_Read(motorId == 0 ? ADR_RMD1_DATA1 : ADR_RMD2_DATA1, &data)){
        this->nodeId = (data & 0x1F) + 1; // Valid ID 1-32
        // Bits 7-15 free
        this->activerequests = (data >> 6) & 0x1;
    }
    if(Flash_Read(motorId == 0 ? ADR_RMD1_TORQUE : ADR_RMD2_TORQUE, &data)){
        maxTorque = data & 0x7FFF;
        // Bit 15 free
    }
 
    // Offset. Could be stored in motor but does not work reliably
    if(Flash_Read(motorId == 0 ? ADR_RMD1_OFFSET : ADR_RMD2_OFFSET, &data)){
        posOffset = (int16_t)(data);
    }
 
}
void RmdMotorCAN::saveFlash(){
    // Save CAN ID and max torque
    uint16_t data1 = (this->nodeId-1) & 0x1F;
    data1 |= this->activerequests ? 1 << 6 : 0;
    Flash_Write(motorId == 0 ? ADR_RMD1_DATA1 : ADR_RMD2_DATA1,data1);
    uint16_t torquedat = maxTorque & 0x7FFF;
    Flash_Write(motorId == 0 ? ADR_RMD1_TORQUE : ADR_RMD2_TORQUE, torquedat);
 
    int32_t offset = (posOffset % (posOffset >= 0 ? 36000 : -36000));
 
    Flash_Write(motorId == 0 ? ADR_RMD1_OFFSET : ADR_RMD2_OFFSET, (uint16_t)offset);
}
 
void RmdMotorCAN::Run(){
//  bool first = true;
    Delay(100);
    while(true){
        nextAvailable = false;
        if(!available){
            sendCmd(0xB5); // Get type
            Delay(20);
        }
 
        if(activerequests){
            updateStatus();
        }else{
            if(!available || requestConstantReportEnable){
                // Setup
                requestConstantReports(0x92, true, 0); // Enable constant position sending
                requestConstantReportEnable = false;
                Delay(150);
            }
        }
        Delay(1000);
        available = nextAvailable; // should have received some replies
    }
}
 
void RmdMotorCAN::setCanFilter(){
    if(filterId >= 0){
        port->removeCanFilter(filterId);
    }
    nodeId = std::min<uint8_t>(nodeId,32);
    uint32_t filter_id = (nodeId + 0x240); // Reply
    uint32_t filter_mask = 0x3FF;
 
    CAN_filter filterConf;
    filterConf.buffer = motorId % 2 == 0 ? 0 : 1;
    filterConf.filter_id = filter_id;
    filterConf.filter_mask =  filter_mask;
    this->filterId = this->port->addCanFilter(filterConf);
}
 
void RmdMotorCAN::stopMotor(){
    active = false;
    this->setTorque(0);
    sendCmd(0x80); // Disable motor
}
 
void RmdMotorCAN::startMotor(){
    if(lastErrors.asInt == 0){ // Only allow enabling if no errors to prevent reenabling after failure
        active = true;
        setTorque(0); // Enable torque mode, no torque
    }
}
 
Encoder* RmdMotorCAN::getEncoder(){
    return static_cast<Encoder*>(this);
}
 
bool RmdMotorCAN::motorReady(){
 
    return lastErrors.asInt == 0 && available; // Ping motor state
}
 
 
uint32_t RmdMotorCAN::getCpr(){
    return 36000;
}
 
int32_t RmdMotorCAN::getPos(){
    if(activerequests && HAL_GetTick() - lastAngleUpdate > angleUpdateMs){
        // pos outdated. Should be sent without request
        sendCmd(0x92); // request multiturn pos 0x92, 0x60
    }
    return (lastPos * 100) - posOffset;
}
 
void RmdMotorCAN::setPos(int32_t pos){
    posOffset = (lastPos*100) - pos;
}
 
void RmdMotorCAN::sendMsg(std::array<uint8_t,8> &data,uint8_t len){
    CAN_tx_msg msg;
    memcpy(&msg.data,data.data(),std::min<uint8_t>(data.size(), CAN_MSGBUFSIZE));
    msg.header.id = this->nodeId + 0x140;
    msg.header.length = len;
    if(!port->sendMessage(msg)){
        // Nothing
    }
}
 
void RmdMotorCAN::sendCmd(uint8_t cmd){
    std::array<uint8_t,8> data = {0};
    data[0] = cmd;
    sendMsg(data);
}
 
 
void RmdMotorCAN::updateStatus(){
    sendCmd(0x9A);
}
 
void RmdMotorCAN::setTorque(int16_t torque){
    std::array<uint8_t,8> data{0xA1,0,0,0,(uint8_t)(torque & 0xff),(uint8_t)((torque >> 8) & 0xff),0,0};
    sendMsg(data);
}
 
void RmdMotorCAN::turn(int16_t power){
    if(!active || !available){
        return;
    }
    int16_t torque = ((float)power / (float)0x7fff) * maxTorque;
    setTorque(torque);
}
 
 
EncoderType RmdMotorCAN::getEncoderType(){
    return EncoderType::absolute;
}
 
void RmdMotorCAN::errorCb(ErrorStatus &errors){
    if(errors.asInt){
        stopMotor();
    }
}
 
void RmdMotorCAN::requestConstantReports(uint8_t cmd,bool enable,uint16_t interval_10ms){
 
    //0xB6 0x92 0x01 0x01 0x00 0x00 0x00 0x00 reports position
    std::array<uint8_t,8> data{0xB6,cmd,(uint8_t)(enable & 1),(uint8_t)(interval_10ms & 0xff),(uint8_t)((interval_10ms >> 8) & 0xff),0,0,0};
    sendMsg(data);
}
 
void RmdMotorCAN::canRxPendCallback(CANPort* port,CAN_rx_msg& msg){
    if(msg.header.id != 0x240u + nodeId){ // Filter if message is a reply for this motor
        return;
    }
    nextAvailable = true; // Got a response
    uint8_t cmd = msg.data[0];
    switch(cmd){
    case 0xA1: // Torque reply
    {
        curTemp = msg.data[1];
        curCurrent = (msg.data[2] | (msg.data[3] << 8)); // in 0.01A
        int16_t speed = (msg.data[4] | (msg.data[5] << 8));
        int16_t angle = (msg.data[6] | (msg.data[7] << 8)); // Position in 1°
        uint32_t ustime = micros();
        if(activerequests && ustime - lastTorqueStatusUpdate_us){
            float interpolatedPos = speed / (1000000.0 * (ustime - lastTorqueStatusUpdate_us));
            lastPos = (lastPos + (angle + interpolatedPos)) / 2; // Interpolate due to low resolution
        }
        lastTorqueStatusUpdate_us = ustime;
 
//      lastPos = (lastPos + angle) / 2; // Interpolate due to low resolution
//      lastPos_torquereply = angle;
        break;
    }
 
    case 0x92: // Multi turn angle in 0.01°
    {
        int32_t pos = (msg.data[4] | (msg.data[5] << 8) | (msg.data[6] << 16) | (msg.data[7] << 24));
        lastAngleUpdate = HAL_GetTick();
        lastPos = pos * 0.01;
        break;
    }
    case 0x94: // Multi turn angle in 0.01°
    {
        int32_t pos = (msg.data[6] | (msg.data[7] << 8));
        lastAngleUpdate = HAL_GetTick();
        lastPos = (lastPos / 360) + (pos * 0.01);
        break;
    }
//  case 0x60: // Multi turn pos in enc counts
//  {
//      int32_t pos = (msg.data[4] | (msg.data[5] << 8) | (msg.data[6] << 16) | (msg.data[7] << 24));
//      lastAngleUpdate = HAL_GetTick();
//      break;
//  }
 
    case 0x9A: // Status 1
    {
        curTemp = msg.data[1];
        curVoltage = msg.data[4] | (msg.data[5] << 8);
        lastErrors.asInt = msg.data[6] | (msg.data[7] << 8);
        errorCb(lastErrors);
        break;
    }
 
    case 0xB5: // Model name
    {
        memcpy(this->modelName,msg.data+1,7);
        break;
    }
 
    }
 
}
 
void RmdMotorCAN::updateRequestMode(bool activerequests){
    if(activerequests == this->activerequests){
        return; // Nothing to do
    }
 
    if(activerequests){
        // Disable constant replies
//      requestConstantReports(0x9A, false, 0); // Disable constant status sending
        requestConstantReports(0x92, false, 0); // Disable constant position sending
 
    }else{
        requestConstantReportEnable = true;
//      requestConstantReports(0x92, true, 0); // Enable constant position sending
    }
    this->activerequests = activerequests;
}
 
void RmdMotorCAN::registerCommands(){
    CommandHandler::registerCommands();
    registerCommand("canid", RmdCAN_commands::canid, "CAN id of motor",CMDFLAG_GET | CMDFLAG_SET);
    registerCommand("errors", RmdCAN_commands::errors, "Error flags",CMDFLAG_GET);
    registerCommand("maxtorque", RmdCAN_commands::maxtorque, "Maximum motor current in 0.01A (When activerequests on)",CMDFLAG_GET | CMDFLAG_SET);
    registerCommand("curr", RmdCAN_commands::current, "Current in 0.01A (When activerequests on)",CMDFLAG_GET);
    registerCommand("temp", RmdCAN_commands::temperature, "Temperature in °C (When activerequests on)",CMDFLAG_GET);
    registerCommand("vbus", RmdCAN_commands::voltage, "Voltage in 0.1V (When activerequests on)",CMDFLAG_GET);
    registerCommand("requestpos", RmdCAN_commands::activerequests, "1 to send active position requests for higher rates",CMDFLAG_GET | CMDFLAG_SET);
    registerCommand("model", RmdCAN_commands::modelname, "Name of motor",CMDFLAG_GET | CMDFLAG_STR_ONLY);
}
 
CommandStatus RmdMotorCAN::command(const ParsedCommand& cmd,std::vector<CommandReply>& replies){
 
    switch(static_cast<RmdCAN_commands>(cmd.cmdId)){
    case RmdCAN_commands::canid:
        if(cmd.type == CMDtype::get){
            replies.emplace_back(this->nodeId);
        }else if(cmd.type == CMDtype::set){
            if(cmd.val != this->nodeId){
                this->nodeId = cmd.val;
                setCanFilter(); // Removes previous filter if set automatically
            }
        }else{
            return CommandStatus::ERR;
        }
        break;
 
    case RmdCAN_commands::maxtorque:
            handleGetSet(cmd, replies, this->maxTorque);
            break;
    case RmdCAN_commands::current:
        if(cmd.type == CMDtype::get){
            replies.emplace_back(curCurrent);
        }else{
            return CommandStatus::ERR;
        }
        break;
 
    case RmdCAN_commands::temperature:
        if(cmd.type == CMDtype::get){
            replies.emplace_back(curTemp);
        }else{
            return CommandStatus::ERR;
        }
        break;
 
    case RmdCAN_commands::errors:
        if(cmd.type == CMDtype::get){
            replies.emplace_back(lastErrors.asInt);
        }else{
            return CommandStatus::ERR;
        }
        break;
 
    case RmdCAN_commands::voltage:
        if(cmd.type == CMDtype::get){
            replies.emplace_back(curVoltage);
        }else{
            return CommandStatus::ERR;
        }
        break;
 
    case RmdCAN_commands::modelname:
        if(cmd.type == CMDtype::get){
            replies.emplace_back(this->modelName);
        }else{
            return CommandStatus::ERR;
        }
            break;
 
    case RmdCAN_commands::activerequests:
        if(cmd.type == CMDtype::get){
                replies.emplace_back(activerequests);
            }else if(cmd.type == CMDtype::set){
                updateRequestMode(cmd.val);
            }else{
                return CommandStatus::ERR;
            }
        break;
 
    default:
        return CommandStatus::NOT_FOUND;
    }
 
    return CommandStatus::OK;
 
}
 
 
#endif