src/libs/Kernel.cpp

   1 /*
   2       This file is part of Smoothie (http://smoothieware.org/). The motion control part is heavily based on Grbl (https://github.com/simen/grbl).
   3       Smoothie is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
   4       Smoothie is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
   5       You should have received a copy of the GNU General Public License along with Smoothie. If not, see <http://www.gnu.org/licenses/>.
   6 */
   7
   8 #include "libs/Kernel.h"
   9 #include "libs/Module.h"
  10 #include "libs/Config.h"
  11 #include "libs/nuts_bolts.h"
  12 #include "libs/SlowTicker.h"
  13 #include "libs/Adc.h"
  14 #include "libs/StreamOutputPool.h"
  15 #include <mri.h>
  16 #include "checksumm.h"
  17 #include "ConfigValue.h"
  18
  19 #include "libs/StepTicker.h"
  20 #include "libs/PublicData.h"
  21 #include "modules/communication/SerialConsole.h"
  22 #include "modules/communication/GcodeDispatch.h"
  23 #include "modules/robot/Planner.h"
  24 #include "modules/robot/Robot.h"
  25 #include "modules/robot/Stepper.h"
  26 #include "modules/robot/Conveyor.h"
  27 #include "StepperMotor.h"
  28 #include "BaseSolution.h"
  29 #include "EndstopsPublicAccess.h"
  30 #include "Configurator.h"
  31 #include "SimpleShell.h"
  32
  33 #include "platform_memory.h"
  34
  35 #include <malloc.h>
  36 #include <array>
  37 #include <string>
  38
  39 #define baud_rate_setting_checksum CHECKSUM("baud_rate")
  40 #define uart0_checksum             CHECKSUM("uart0")
  41
  42 #define base_stepping_frequency_checksum            CHECKSUM("base_stepping_frequency")
  43 #define microseconds_per_step_pulse_checksum        CHECKSUM("microseconds_per_step_pulse")
  44 #define acceleration_ticks_per_second_checksum      CHECKSUM("acceleration_ticks_per_second")
  45 #define disable_leds_checksum                       CHECKSUM("leds_disable")
  46 #define grbl_mode_checksum                          CHECKSUM("grbl_mode")
  47 #define ok_per_line_checksum                        CHECKSUM("ok_per_line")
  48
  49 Kernel* Kernel::instance;
  50
  51 // The kernel is the central point in Smoothie : it stores modules, and handles event calls
  52 Kernel::Kernel(){
  53     halted= false;
  54     feed_hold= false;
  55
  56     instance= this; // setup the Singleton instance of the kernel
  57
  58     // serial first at fixed baud rate (DEFAULT_SERIAL_BAUD_RATE) so config can report errors to serial
  59         // Set to UART0, this will be changed to use the same UART as MRI if it's enabled
  60     this->serial = new SerialConsole(USBTX, USBRX, DEFAULT_SERIAL_BAUD_RATE);
  61
  62     // Config next, but does not load cache yet
  63     this->config = new Config();
  64
  65     // Pre-load the config cache, do after setting up serial so we can report errors to serial
  66     this->config->config_cache_load();
  67
  68     // now config is loaded we can do normal setup for serial based on config
  69     delete this->serial;
  70     this->serial= NULL;
  71
  72     this->streams = new StreamOutputPool();
  73
  74     this->current_path   = "/";
  75
  76     // Configure UART depending on MRI config
  77     // Match up the SerialConsole to MRI UART. This makes it easy to use only one UART for both debug and actual commands.
  78     NVIC_SetPriorityGrouping(0);
  79
  80 #if MRI_ENABLE != 0
  81     switch( __mriPlatform_CommUartIndex() ) {
  82         case 0:
  83             this->serial = new(AHB0) SerialConsole(USBTX, USBRX, this->config->value(uart0_checksum,baud_rate_setting_checksum)->by_default(DEFAULT_SERIAL_BAUD_RATE)->as_number());
  84             break;
  85         case 1:
  86             this->serial = new(AHB0) SerialConsole(  p13,   p14, this->config->value(uart0_checksum,baud_rate_setting_checksum)->by_default(DEFAULT_SERIAL_BAUD_RATE)->as_number());
  87             break;
  88         case 2:
  89             this->serial = new(AHB0) SerialConsole(  p28,   p27, this->config->value(uart0_checksum,baud_rate_setting_checksum)->by_default(DEFAULT_SERIAL_BAUD_RATE)->as_number());
  90             break;
  91         case 3:
  92             this->serial = new(AHB0) SerialConsole(   p9,   p10, this->config->value(uart0_checksum,baud_rate_setting_checksum)->by_default(DEFAULT_SERIAL_BAUD_RATE)->as_number());
  93             break;
  94     }
  95 #endif
  96     // default
  97     if(this->serial == NULL) {
  98         this->serial = new(AHB0) SerialConsole(USBTX, USBRX, this->config->value(uart0_checksum,baud_rate_setting_checksum)->by_default(DEFAULT_SERIAL_BAUD_RATE)->as_number());
  99     }
 100
 101     //some boards don't have leds.. TOO BAD!
 102     this->use_leds= !this->config->value( disable_leds_checksum )->by_default(false)->as_bool();
 103     this->grbl_mode= this->config->value( grbl_mode_checksum )->by_default(false)->as_bool();
 104     this->ok_per_line= this->config->value( ok_per_line_checksum )->by_default(true)->as_bool();
 105
 106     this->add_module( this->serial );
 107
 108     // HAL stuff
 109     add_module( this->slow_ticker = new SlowTicker());
 110
 111     this->step_ticker = new StepTicker();
 112     this->adc = new Adc();
 113
 114     // TODO : These should go into platform-specific files
 115     // LPC17xx-specific
 116     NVIC_SetPriorityGrouping(0);
 117     NVIC_SetPriority(TIMER0_IRQn, 2);
 118     NVIC_SetPriority(TIMER1_IRQn, 1);
 119     NVIC_SetPriority(TIMER2_IRQn, 4);
 120     NVIC_SetPriority(PendSV_IRQn, 3);
 121     NVIC_SetPriority(RIT_IRQn, 3); // we make acceleration tick the same prio as pendsv so it can't be pre-empted by end of block
 122
 123     // Set other priorities lower than the timers
 124     NVIC_SetPriority(ADC_IRQn, 5);
 125     NVIC_SetPriority(USB_IRQn, 5);
 126
 127     // If MRI is enabled
 128     if( MRI_ENABLE ){
 129         if( NVIC_GetPriority(UART0_IRQn) > 0 ){ NVIC_SetPriority(UART0_IRQn, 5); }
 130         if( NVIC_GetPriority(UART1_IRQn) > 0 ){ NVIC_SetPriority(UART1_IRQn, 5); }
 131         if( NVIC_GetPriority(UART2_IRQn) > 0 ){ NVIC_SetPriority(UART2_IRQn, 5); }
 132         if( NVIC_GetPriority(UART3_IRQn) > 0 ){ NVIC_SetPriority(UART3_IRQn, 5); }
 133     }else{
 134         NVIC_SetPriority(UART0_IRQn, 5);
 135         NVIC_SetPriority(UART1_IRQn, 5);
 136         NVIC_SetPriority(UART2_IRQn, 5);
 137         NVIC_SetPriority(UART3_IRQn, 5);
 138     }
 139
 140     // Configure the step ticker
 141     this->base_stepping_frequency = this->config->value(base_stepping_frequency_checksum)->by_default(100000)->as_number();
 142     float microseconds_per_step_pulse = this->config->value(microseconds_per_step_pulse_checksum)->by_default(5)->as_number();
 143     this->acceleration_ticks_per_second = THEKERNEL->config->value(acceleration_ticks_per_second_checksum)->by_default(1000)->as_number();
 144
 145     // Configure the step ticker ( TODO : shouldnt this go into stepticker's code ? )
 146     this->step_ticker->set_reset_delay( microseconds_per_step_pulse );
 147     this->step_ticker->set_frequency( this->base_stepping_frequency );
 148     this->step_ticker->set_acceleration_ticks_per_second(acceleration_ticks_per_second); // must be set after set_frequency
 149
 150     // Core modules
 151     this->add_module( this->gcode_dispatch = new GcodeDispatch() );
 152     this->add_module( this->robot          = new Robot()         );
 153     this->add_module( this->stepper        = new Stepper()       );
 154     this->add_module( this->conveyor       = new Conveyor()      );
 155     this->add_module( this->simpleshell    = new SimpleShell()   );
 156
 157     this->planner = new Planner();
 158     this->configurator   = new Configurator();
 159 }
 160
 161 // return a GRBL-like query string for serial ?
 162 std::string Kernel::get_query_string()
 163 {
 164     std::string str;
 165     bool homing;
 166     bool ok = PublicData::get_value(endstops_checksum, get_homing_status_checksum, 0, &homing);
 167     if(!ok) homing= false;
 168
 169     str.append("<");
 170     if(halted) {
 171         str.append("Alarm,");
 172     }else if(homing) {
 173         str.append("Home,");
 174     }else if(feed_hold) {
 175         str.append("Hold,");
 176     }else if(this->conveyor->is_queue_empty()) {
 177         str.append("Idle,");
 178     }else{
 179         str.append("Run,");
 180     }
 181
 182     // get real time current actuator position in mm
 183     ActuatorCoordinates current_position{
 184         robot->actuators[X_AXIS]->get_current_position(),
 185         robot->actuators[Y_AXIS]->get_current_position(),
 186         robot->actuators[Z_AXIS]->get_current_position()
 187     };
 188
 189     // get machine position from the actuator position using FK
 190     float mpos[3];
 191     robot->arm_solution->actuator_to_cartesian(current_position, mpos);
 192
 193     char buf[64];
 194     // machine position
 195     size_t n= snprintf(buf, sizeof(buf), "%f,%f,%f,", mpos[0], mpos[1], mpos[2]);
 196     str.append("MPos:").append(buf, n);
 197
 198     // work space position
 199     Robot::wcs_t pos= robot->mcs2wcs(mpos);
 200     n= snprintf(buf, sizeof(buf), "%f,%f,%f", robot->from_millimeters(std::get<X_AXIS>(pos)), robot->from_millimeters(std::get<Y_AXIS>(pos)), robot->from_millimeters(std::get<Z_AXIS>(pos)));
 201     str.append("WPos:").append(buf, n);
 202     str.append(">\r\n");
 203     return str;
 204 }
 205
 206 // Add a module to Kernel. We don't actually hold a list of modules we just call its on_module_loaded
 207 void Kernel::add_module(Module* module){
 208     module->on_module_loaded();
 209 }
 210
 211 // Adds a hook for a given module and event
 212 void Kernel::register_for_event(_EVENT_ENUM id_event, Module *mod){
 213     this->hooks[id_event].push_back(mod);
 214 }
 215
 216 // Call a specific event with an argument
 217 void Kernel::call_event(_EVENT_ENUM id_event, void * argument){
 218     if(id_event == ON_HALT) {
 219         this->halted= (argument == nullptr);
 220     }
 221     for (auto m : hooks[id_event]) {
 222         (m->*kernel_callback_functions[id_event])(argument);
 223     }
 224 }
 225
 226 // These are used by tests to test for various things. basically mocks
 227 bool Kernel::kernel_has_event(_EVENT_ENUM id_event, Module *mod)
 228 {
 229     for (auto m : hooks[id_event]) {
 230         if(m == mod) return true;
 231     }
 232     return false;
 233 }
 234
 235 void Kernel::unregister_for_event(_EVENT_ENUM id_event, Module *mod)
 236 {
 237     for (auto i = hooks[id_event].begin(); i != hooks[id_event].end(); ++i) {
 238         if(*i == mod) {
 239             hooks[id_event].erase(i);
 240             return;
 241         }
 242     }
 243 }
 244