Jiang Han / HKC_MiniCheetah

MIT Motor FOC Control

Dependencies:   FastPWM3

main.cpp@43:dfb72608639c, 2018-05-25 (annotated)

Committer:
benkatz
Date:
Fri May 25 16:10:46 2018 +0000
Revision:
43:dfb72608639c
Parent:
42:738fa01b0346
Child:
44:8040fa2fcb0d
re-ordered main() so CAN powerup order doesn't break things;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
benkatz 22:60276ba87ac6 1 /// high-bandwidth 3-phase motor control, for robots
benkatz 22:60276ba87ac6 2 /// Written by benkatz, with much inspiration from bayleyw, nkirkby, scolton, David Otten, and others
benkatz 22:60276ba87ac6 3 /// Hardware documentation can be found at build-its.blogspot.com
benkatz 22:60276ba87ac6 4 /// Written for the STM32F446, but can be implemented on other STM32 MCU's with some further register-diddling
benkatz 22:60276ba87ac6 5
benkatz 23:2adf23ee0305 6 #define REST_MODE 0
benkatz 23:2adf23ee0305 7 #define CALIBRATION_MODE 1
benkatz 26:2b865c00d7e9 8 #define MOTOR_MODE 2
benkatz 23:2adf23ee0305 9 #define SETUP_MODE 4
benkatz 23:2adf23ee0305 10 #define ENCODER_MODE 5
benkatz 22:60276ba87ac6 11
benkatz 38:67e4e1453a4b 12 #define VERSION_NUM "1.5"
benkatz 26:2b865c00d7e9 13
benkatz 18:f1d56f4acb39 14
benkatz 26:2b865c00d7e9 15 float __float_reg[64]; // Floats stored in flash
benkatz 26:2b865c00d7e9 16 int __int_reg[256]; // Ints stored in flash. Includes position sensor calibration lookup table
benkatz 17:3c5df2982199 17
benkatz 0:4e1c4df6aabd 18 #include "mbed.h"
benkatz 0:4e1c4df6aabd 19 #include "PositionSensor.h"
benkatz 20:bf9ea5125d52 20 #include "structs.h"
benkatz 20:bf9ea5125d52 21 #include "foc.h"
benkatz 22:60276ba87ac6 22 #include "calibration.h"
benkatz 20:bf9ea5125d52 23 #include "hw_setup.h"
benkatz 23:2adf23ee0305 24 #include "math_ops.h"
benkatz 20:bf9ea5125d52 25 #include "current_controller_config.h"
benkatz 20:bf9ea5125d52 26 #include "hw_config.h"
benkatz 20:bf9ea5125d52 27 #include "motor_config.h"
benkatz 23:2adf23ee0305 28 #include "stm32f4xx_flash.h"
benkatz 23:2adf23ee0305 29 #include "FlashWriter.h"
benkatz 23:2adf23ee0305 30 #include "user_config.h"
benkatz 23:2adf23ee0305 31 #include "PreferenceWriter.h"
benkatz 42:738fa01b0346 32 #include "CAN_com.h"
benkatz 37:c0f352d6e8e3 33
benkatz 26:2b865c00d7e9 34
benkatz 23:2adf23ee0305 35 PreferenceWriter prefs(6);
benkatz 9:d7eb815cb057 36
benkatz 20:bf9ea5125d52 37 GPIOStruct gpio;
benkatz 20:bf9ea5125d52 38 ControllerStruct controller;
benkatz 20:bf9ea5125d52 39 COMStruct com;
benkatz 37:c0f352d6e8e3 40 ObserverStruct observer;
benkatz 43:dfb72608639c 41 Serial pc(PA_2, PA_3);
benkatz 9:d7eb815cb057 42
benkatz 17:3c5df2982199 43
benkatz 42:738fa01b0346 44 CAN can(PB_8, PB_9); // CAN Rx pin name, CAN Tx pin name
benkatz 26:2b865c00d7e9 45 CANMessage rxMsg;
benkatz 26:2b865c00d7e9 46 CANMessage txMsg;
benkatz 23:2adf23ee0305 47
benkatz 20:bf9ea5125d52 48
benkatz 8:10ae7bc88d6e 49
benkatz 26:2b865c00d7e9 50 PositionSensorAM5147 spi(16384, 0.0, NPP);
benkatz 20:bf9ea5125d52 51
benkatz 23:2adf23ee0305 52 volatile int count = 0;
benkatz 23:2adf23ee0305 53 volatile int state = REST_MODE;
benkatz 23:2adf23ee0305 54 volatile int state_change;
benkatz 20:bf9ea5125d52 55
benkatz 26:2b865c00d7e9 56 void onMsgReceived() {
benkatz 26:2b865c00d7e9 57 //msgAvailable = true;
benkatz 26:2b865c00d7e9 58 //printf("%.3f %.3f %.3f\n\r", controller.theta_mech, controller.dtheta_mech, controller.i_q);
benkatz 26:2b865c00d7e9 59 can.read(rxMsg);
benkatz 28:8c7e29f719c5 60 if((rxMsg.id == CAN_ID)){
benkatz 28:8c7e29f719c5 61 controller.timeout = 0;
benkatz 28:8c7e29f719c5 62 if(((rxMsg.data[0]==0xFF) & (rxMsg.data[1]==0xFF) & (rxMsg.data[2]==0xFF) & (rxMsg.data[3]==0xFF) & (rxMsg.data[4]==0xFF) & (rxMsg.data[5]==0xFF) & (rxMsg.data[6]==0xFF) & (rxMsg.data[7]==0xFC))){
benkatz 28:8c7e29f719c5 63 state = MOTOR_MODE;
benkatz 28:8c7e29f719c5 64 state_change = 1;
benkatz 28:8c7e29f719c5 65 }
benkatz 28:8c7e29f719c5 66 else if(((rxMsg.data[0]==0xFF) & (rxMsg.data[1]==0xFF) & (rxMsg.data[2]==0xFF) & (rxMsg.data[3]==0xFF) * (rxMsg.data[4]==0xFF) & (rxMsg.data[5]==0xFF) & (rxMsg.data[6]==0xFF) & (rxMsg.data[7]==0xFD))){
benkatz 28:8c7e29f719c5 67 state = REST_MODE;
benkatz 28:8c7e29f719c5 68 state_change = 1;
benkatz 37:c0f352d6e8e3 69 gpio.led->write(0);;
benkatz 28:8c7e29f719c5 70 }
benkatz 28:8c7e29f719c5 71 else if(((rxMsg.data[0]==0xFF) & (rxMsg.data[1]==0xFF) & (rxMsg.data[2]==0xFF) & (rxMsg.data[3]==0xFF) * (rxMsg.data[4]==0xFF) & (rxMsg.data[5]==0xFF) & (rxMsg.data[6]==0xFF) & (rxMsg.data[7]==0xFE))){
benkatz 28:8c7e29f719c5 72 spi.ZeroPosition();
benkatz 28:8c7e29f719c5 73 }
benkatz 28:8c7e29f719c5 74 else if(state == MOTOR_MODE){
benkatz 28:8c7e29f719c5 75 unpack_cmd(rxMsg, &controller);
benkatz 28:8c7e29f719c5 76 }
benkatz 37:c0f352d6e8e3 77 pack_reply(&txMsg, controller.theta_mech, controller.dtheta_mech, controller.i_q_filt*KT_OUT);
benkatz 37:c0f352d6e8e3 78 can.write(txMsg);
benkatz 28:8c7e29f719c5 79 }
benkatz 26:2b865c00d7e9 80
benkatz 26:2b865c00d7e9 81 }
benkatz 26:2b865c00d7e9 82
benkatz 23:2adf23ee0305 83 void enter_menu_state(void){
benkatz 23:2adf23ee0305 84 printf("\n\r\n\r\n\r");
benkatz 23:2adf23ee0305 85 printf(" Commands:\n\r");
benkatz 26:2b865c00d7e9 86 printf(" m - Motor Mode\n\r");
benkatz 23:2adf23ee0305 87 printf(" c - Calibrate Encoder\n\r");
benkatz 23:2adf23ee0305 88 printf(" s - Setup\n\r");
benkatz 23:2adf23ee0305 89 printf(" e - Display Encoder\n\r");
benkatz 37:c0f352d6e8e3 90 printf(" z - Set Zero Position\n\r");
benkatz 23:2adf23ee0305 91 printf(" esc - Exit to Menu\n\r");
benkatz 23:2adf23ee0305 92 state_change = 0;
benkatz 25:f5741040c4bb 93 gpio.enable->write(0);
benkatz 37:c0f352d6e8e3 94 gpio.led->write(0);
benkatz 23:2adf23ee0305 95 }
benkatz 24:58c2d7571207 96
benkatz 24:58c2d7571207 97 void enter_setup_state(void){
benkatz 24:58c2d7571207 98 printf("\n\r\n\r Configuration Options \n\r\n\n");
benkatz 28:8c7e29f719c5 99 printf(" %-4s %-31s %-5s %-6s %-5s\n\r\n\r", "prefix", "parameter", "min", "max", "current value");
benkatz 28:8c7e29f719c5 100 printf(" %-4s %-31s %-5s %-6s %.1f\n\r", "b", "Current Bandwidth (Hz)", "100", "2000", I_BW);
benkatz 28:8c7e29f719c5 101 printf(" %-4s %-31s %-5s %-6s %-5i\n\r", "i", "CAN ID", "0", "127", CAN_ID);
benkatz 28:8c7e29f719c5 102 printf(" %-4s %-31s %-5s %-6s %-5i\n\r", "m", "CAN Master ID", "0", "127", CAN_MASTER);
benkatz 28:8c7e29f719c5 103 printf(" %-4s %-31s %-5s %-6s %.1f\n\r", "l", "Torque Limit (N-m)", "0.0", "18.0", TORQUE_LIMIT);
benkatz 28:8c7e29f719c5 104 printf(" %-4s %-31s %-5s %-6s %d\n\r", "t", "CAN Timeout (cycles)(0 = none)", "0", "100000", CAN_TIMEOUT);
benkatz 24:58c2d7571207 105 printf("\n\r To change a value, type 'prefix''value''ENTER'\n\r i.e. 'b1000''ENTER'\n\r\n\r");
benkatz 24:58c2d7571207 106 state_change = 0;
benkatz 24:58c2d7571207 107 }
benkatz 22:60276ba87ac6 108
benkatz 23:2adf23ee0305 109 void enter_torque_mode(void){
benkatz 37:c0f352d6e8e3 110 controller.ovp_flag = 0;
benkatz 28:8c7e29f719c5 111 gpio.enable->write(1); // Enable gate drive
benkatz 28:8c7e29f719c5 112 reset_foc(&controller); // Tesets integrators, and other control loop parameters
benkatz 28:8c7e29f719c5 113 wait(.001);
benkatz 23:2adf23ee0305 114 controller.i_d_ref = 0;
benkatz 28:8c7e29f719c5 115 controller.i_q_ref = 0; // Current Setpoints
benkatz 37:c0f352d6e8e3 116 gpio.led->write(1); // Turn on status LED
benkatz 25:f5741040c4bb 117 state_change = 0;
benkatz 28:8c7e29f719c5 118 printf("\n\r Entering Motor Mode \n\r");
benkatz 23:2adf23ee0305 119 }
benkatz 22:60276ba87ac6 120
benkatz 23:2adf23ee0305 121 void calibrate(void){
benkatz 25:f5741040c4bb 122 gpio.enable->write(1); // Enable gate drive
benkatz 37:c0f352d6e8e3 123 gpio.led->write(1); // Turn on status LED
benkatz 25:f5741040c4bb 124 order_phases(&spi, &gpio, &controller, &prefs); // Check phase ordering
benkatz 25:f5741040c4bb 125 calibrate(&spi, &gpio, &controller, &prefs); // Perform calibration procedure
benkatz 37:c0f352d6e8e3 126 gpio.led->write(0);; // Turn off status LED
benkatz 23:2adf23ee0305 127 wait(.2);
benkatz 25:f5741040c4bb 128 gpio.enable->write(0); // Turn off gate drive
benkatz 23:2adf23ee0305 129 printf("\n\r Calibration complete. Press 'esc' to return to menu\n\r");
benkatz 23:2adf23ee0305 130 state_change = 0;
benkatz 23:2adf23ee0305 131 }
benkatz 23:2adf23ee0305 132
benkatz 23:2adf23ee0305 133 void print_encoder(void){
benkatz 23:2adf23ee0305 134 printf(" Mechanical Angle: %f Electrical Angle: %f Raw: %d\n\r", spi.GetMechPosition(), spi.GetElecPosition(), spi.GetRawPosition());
benkatz 23:2adf23ee0305 135 wait(.05);
benkatz 22:60276ba87ac6 136 }
benkatz 20:bf9ea5125d52 137
benkatz 23:2adf23ee0305 138 /// Current Sampling Interrupt ///
benkatz 23:2adf23ee0305 139 /// This runs at 40 kHz, regardless of of the mode the controller is in ///
benkatz 2:8724412ad628 140 extern "C" void TIM1_UP_TIM10_IRQHandler(void) {
benkatz 2:8724412ad628 141 if (TIM1->SR & TIM_SR_UIF ) {
benkatz 23:2adf23ee0305 142
benkatz 23:2adf23ee0305 143 ///Sample current always ///
benkatz 25:f5741040c4bb 144 ADC1->CR2 |= 0x40000000; // Begin sample and conversion
benkatz 22:60276ba87ac6 145 //volatile int delay;
benkatz 20:bf9ea5125d52 146 //for (delay = 0; delay < 55; delay++);
benkatz 37:c0f352d6e8e3 147 controller.adc2_raw = ADC2->DR; // Read ADC Data Registers
benkatz 23:2adf23ee0305 148 controller.adc1_raw = ADC1->DR;
benkatz 37:c0f352d6e8e3 149 controller.adc3_raw = ADC3->DR;
benkatz 37:c0f352d6e8e3 150 spi.Sample(); // sample position sensor
benkatz 37:c0f352d6e8e3 151 controller.theta_elec = spi.GetElecPosition();
benkatz 37:c0f352d6e8e3 152 controller.theta_mech = (1.0f/GR)*spi.GetMechPosition();
benkatz 37:c0f352d6e8e3 153 controller.dtheta_mech = (1.0f/GR)*spi.GetMechVelocity();
benkatz 37:c0f352d6e8e3 154 controller.dtheta_elec = spi.GetElecVelocity();
benkatz 37:c0f352d6e8e3 155 controller.v_bus = 0.95f*controller.v_bus + 0.05f*((float)controller.adc3_raw)*V_SCALE;
benkatz 23:2adf23ee0305 156 ///
benkatz 20:bf9ea5125d52 157
benkatz 23:2adf23ee0305 158 /// Check state machine state, and run the appropriate function ///
benkatz 23:2adf23ee0305 159 switch(state){
benkatz 37:c0f352d6e8e3 160 case REST_MODE: // Do nothing
benkatz 23:2adf23ee0305 161 if(state_change){
benkatz 23:2adf23ee0305 162 enter_menu_state();
benkatz 23:2adf23ee0305 163 }
benkatz 23:2adf23ee0305 164 break;
benkatz 22:60276ba87ac6 165
benkatz 23:2adf23ee0305 166 case CALIBRATION_MODE: // Run encoder calibration procedure
benkatz 23:2adf23ee0305 167 if(state_change){
benkatz 23:2adf23ee0305 168 calibrate();
benkatz 23:2adf23ee0305 169 }
benkatz 23:2adf23ee0305 170 break;
benkatz 23:2adf23ee0305 171
benkatz 26:2b865c00d7e9 172 case MOTOR_MODE: // Run torque control
benkatz 25:f5741040c4bb 173 if(state_change){
benkatz 25:f5741040c4bb 174 enter_torque_mode();
benkatz 28:8c7e29f719c5 175 count = 0;
benkatz 25:f5741040c4bb 176 }
benkatz 28:8c7e29f719c5 177 else{
benkatz 37:c0f352d6e8e3 178 /*
benkatz 37:c0f352d6e8e3 179 if(controller.v_bus>28.0f){ //Turn of gate drive if bus voltage is too high, to prevent FETsplosion if the bus is cut during regen
benkatz 37:c0f352d6e8e3 180 gpio.enable->write(0);
benkatz 37:c0f352d6e8e3 181 controller.ovp_flag = 1;
benkatz 37:c0f352d6e8e3 182 state = REST_MODE;
benkatz 37:c0f352d6e8e3 183 state_change = 1;
benkatz 37:c0f352d6e8e3 184 printf("OVP Triggered!\n\r");
benkatz 37:c0f352d6e8e3 185 }
benkatz 37:c0f352d6e8e3 186 */
benkatz 37:c0f352d6e8e3 187
benkatz 40:cd7e837b2b93 188 torque_control(&controller);
benkatz 28:8c7e29f719c5 189 if((controller.timeout > CAN_TIMEOUT) && (CAN_TIMEOUT > 0)){
benkatz 28:8c7e29f719c5 190 controller.i_d_ref = 0;
benkatz 28:8c7e29f719c5 191 controller.i_q_ref = 0;
benkatz 37:c0f352d6e8e3 192 controller.kp = 0;
benkatz 37:c0f352d6e8e3 193 controller.kd = 0;
benkatz 37:c0f352d6e8e3 194 controller.t_ff = 0;
benkatz 28:8c7e29f719c5 195 }
benkatz 37:c0f352d6e8e3 196 commutate(&controller, &observer, &gpio, controller.theta_elec); // Run current loop
benkatz 28:8c7e29f719c5 197 controller.timeout += 1;
benkatz 38:67e4e1453a4b 198
benkatz 39:3580a907ef93 199 /*
benkatz 37:c0f352d6e8e3 200 count++;
benkatz 40:cd7e837b2b93 201 if(count == 4000){
benkatz 40:cd7e837b2b93 202 printf("%.4f\n\r", controller.dtheta_mech);
benkatz 32:ccac5da77844 203 count = 0;
benkatz 23:2adf23ee0305 204 }
benkatz 39:3580a907ef93 205 */
benkatz 38:67e4e1453a4b 206
benkatz 37:c0f352d6e8e3 207
benkatz 37:c0f352d6e8e3 208 }
benkatz 23:2adf23ee0305 209 break;
benkatz 23:2adf23ee0305 210 case SETUP_MODE:
benkatz 23:2adf23ee0305 211 if(state_change){
benkatz 24:58c2d7571207 212 enter_setup_state();
benkatz 23:2adf23ee0305 213 }
benkatz 23:2adf23ee0305 214 break;
benkatz 23:2adf23ee0305 215 case ENCODER_MODE:
benkatz 23:2adf23ee0305 216 print_encoder();
benkatz 23:2adf23ee0305 217 break;
benkatz 37:c0f352d6e8e3 218 }
benkatz 2:8724412ad628 219 }
benkatz 23:2adf23ee0305 220 TIM1->SR = 0x0; // reset the status register
benkatz 2:8724412ad628 221 }
benkatz 0:4e1c4df6aabd 222
benkatz 25:f5741040c4bb 223
benkatz 24:58c2d7571207 224 char cmd_val[8] = {0};
benkatz 24:58c2d7571207 225 char cmd_id = 0;
benkatz 25:f5741040c4bb 226 char char_count = 0;
benkatz 24:58c2d7571207 227
benkatz 25:f5741040c4bb 228 /// Manage state machine with commands from serial terminal or configurator gui ///
benkatz 25:f5741040c4bb 229 /// Called when data received over serial ///
benkatz 23:2adf23ee0305 230 void serial_interrupt(void){
benkatz 23:2adf23ee0305 231 while(pc.readable()){
benkatz 23:2adf23ee0305 232 char c = pc.getc();
benkatz 25:f5741040c4bb 233 if(c == 27){
benkatz 25:f5741040c4bb 234 state = REST_MODE;
benkatz 25:f5741040c4bb 235 state_change = 1;
benkatz 25:f5741040c4bb 236 char_count = 0;
benkatz 25:f5741040c4bb 237 cmd_id = 0;
benkatz 37:c0f352d6e8e3 238 gpio.led->write(0);;
benkatz 25:f5741040c4bb 239 for(int i = 0; i<8; i++){cmd_val[i] = 0;}
benkatz 25:f5741040c4bb 240 }
benkatz 24:58c2d7571207 241 if(state == REST_MODE){
benkatz 23:2adf23ee0305 242 switch (c){
benkatz 23:2adf23ee0305 243 case 'c':
benkatz 23:2adf23ee0305 244 state = CALIBRATION_MODE;
benkatz 23:2adf23ee0305 245 state_change = 1;
benkatz 23:2adf23ee0305 246 break;
benkatz 26:2b865c00d7e9 247 case 'm':
benkatz 26:2b865c00d7e9 248 state = MOTOR_MODE;
benkatz 23:2adf23ee0305 249 state_change = 1;
benkatz 23:2adf23ee0305 250 break;
benkatz 23:2adf23ee0305 251 case 'e':
benkatz 23:2adf23ee0305 252 state = ENCODER_MODE;
benkatz 23:2adf23ee0305 253 state_change = 1;
benkatz 23:2adf23ee0305 254 break;
benkatz 23:2adf23ee0305 255 case 's':
benkatz 23:2adf23ee0305 256 state = SETUP_MODE;
benkatz 23:2adf23ee0305 257 state_change = 1;
benkatz 23:2adf23ee0305 258 break;
benkatz 37:c0f352d6e8e3 259 case 'z':
benkatz 37:c0f352d6e8e3 260 spi.SetMechOffset(0);
benkatz 37:c0f352d6e8e3 261 spi.Sample();
benkatz 37:c0f352d6e8e3 262 wait_us(20);
benkatz 37:c0f352d6e8e3 263 M_OFFSET = spi.GetMechPosition();
benkatz 37:c0f352d6e8e3 264 if (!prefs.ready()) prefs.open();
benkatz 37:c0f352d6e8e3 265 prefs.flush(); // Write new prefs to flash
benkatz 37:c0f352d6e8e3 266 prefs.close();
benkatz 37:c0f352d6e8e3 267 prefs.load();
benkatz 37:c0f352d6e8e3 268 spi.SetMechOffset(M_OFFSET);
benkatz 37:c0f352d6e8e3 269 printf("\n\r Saved new zero position: %.4f\n\r\n\r", M_OFFSET);
benkatz 37:c0f352d6e8e3 270
benkatz 37:c0f352d6e8e3 271 break;
benkatz 37:c0f352d6e8e3 272 }
benkatz 37:c0f352d6e8e3 273
benkatz 24:58c2d7571207 274 }
benkatz 24:58c2d7571207 275 else if(state == SETUP_MODE){
benkatz 25:f5741040c4bb 276 if(c == 13){
benkatz 24:58c2d7571207 277 switch (cmd_id){
benkatz 24:58c2d7571207 278 case 'b':
benkatz 24:58c2d7571207 279 I_BW = fmaxf(fminf(atof(cmd_val), 2000.0f), 100.0f);
benkatz 24:58c2d7571207 280 break;
benkatz 24:58c2d7571207 281 case 'i':
benkatz 24:58c2d7571207 282 CAN_ID = atoi(cmd_val);
benkatz 24:58c2d7571207 283 break;
benkatz 26:2b865c00d7e9 284 case 'm':
benkatz 26:2b865c00d7e9 285 CAN_MASTER = atoi(cmd_val);
benkatz 26:2b865c00d7e9 286 break;
benkatz 24:58c2d7571207 287 case 'l':
benkatz 24:58c2d7571207 288 TORQUE_LIMIT = fmaxf(fminf(atof(cmd_val), 18.0f), 0.0f);
benkatz 24:58c2d7571207 289 break;
benkatz 28:8c7e29f719c5 290 case 't':
benkatz 28:8c7e29f719c5 291 CAN_TIMEOUT = atoi(cmd_val);
benkatz 28:8c7e29f719c5 292 break;
benkatz 24:58c2d7571207 293 default:
benkatz 24:58c2d7571207 294 printf("\n\r '%c' Not a valid command prefix\n\r\n\r", cmd_id);
benkatz 24:58c2d7571207 295 break;
benkatz 24:58c2d7571207 296 }
benkatz 24:58c2d7571207 297
benkatz 24:58c2d7571207 298 if (!prefs.ready()) prefs.open();
benkatz 24:58c2d7571207 299 prefs.flush(); // Write new prefs to flash
benkatz 24:58c2d7571207 300 prefs.close();
benkatz 24:58c2d7571207 301 prefs.load();
benkatz 24:58c2d7571207 302 state_change = 1;
benkatz 24:58c2d7571207 303 char_count = 0;
benkatz 24:58c2d7571207 304 cmd_id = 0;
benkatz 24:58c2d7571207 305 for(int i = 0; i<8; i++){cmd_val[i] = 0;}
benkatz 24:58c2d7571207 306 }
benkatz 24:58c2d7571207 307 else{
benkatz 24:58c2d7571207 308 if(char_count == 0){cmd_id = c;}
benkatz 24:58c2d7571207 309 else{
benkatz 24:58c2d7571207 310 cmd_val[char_count-1] = c;
benkatz 24:58c2d7571207 311
benkatz 24:58c2d7571207 312 }
benkatz 24:58c2d7571207 313 pc.putc(c);
benkatz 24:58c2d7571207 314 char_count++;
benkatz 23:2adf23ee0305 315 }
benkatz 23:2adf23ee0305 316 }
benkatz 24:58c2d7571207 317 else if (state == ENCODER_MODE){
benkatz 24:58c2d7571207 318 switch (c){
benkatz 24:58c2d7571207 319 case 27:
benkatz 24:58c2d7571207 320 state = REST_MODE;
benkatz 24:58c2d7571207 321 state_change = 1;
benkatz 24:58c2d7571207 322 break;
benkatz 24:58c2d7571207 323 }
benkatz 24:58c2d7571207 324 }
benkatz 24:58c2d7571207 325
benkatz 24:58c2d7571207 326 }
benkatz 22:60276ba87ac6 327 }
benkatz 0:4e1c4df6aabd 328
benkatz 0:4e1c4df6aabd 329 int main() {
benkatz 43:dfb72608639c 330 can.frequency(1000000); // set bit rate to 1Mbps
benkatz 20:bf9ea5125d52 331 controller.v_bus = V_BUS;
benkatz 22:60276ba87ac6 332 controller.mode = 0;
benkatz 23:2adf23ee0305 333 Init_All_HW(&gpio); // Setup PWM, ADC, GPIO
benkatz 20:bf9ea5125d52 334
benkatz 9:d7eb815cb057 335 wait(.1);
benkatz 26:2b865c00d7e9 336 gpio.enable->write(1);
benkatz 26:2b865c00d7e9 337 TIM1->CCR3 = 0x708*(1.0f); // Write duty cycles
benkatz 26:2b865c00d7e9 338 TIM1->CCR2 = 0x708*(1.0f);
benkatz 26:2b865c00d7e9 339 TIM1->CCR1 = 0x708*(1.0f);
benkatz 23:2adf23ee0305 340 zero_current(&controller.adc1_offset, &controller.adc2_offset); // Measure current sensor zero-offset
benkatz 26:2b865c00d7e9 341 gpio.enable->write(0);
benkatz 23:2adf23ee0305 342 reset_foc(&controller); // Reset current controller
benkatz 26:2b865c00d7e9 343 TIM1->CR1 ^= TIM_CR1_UDIS;
benkatz 26:2b865c00d7e9 344 //TIM1->CR1 |= TIM_CR1_UDIS; //enable interrupt
benkatz 20:bf9ea5125d52 345
benkatz 20:bf9ea5125d52 346 wait(.1);
benkatz 37:c0f352d6e8e3 347 NVIC_SetPriority(TIM1_UP_TIM10_IRQn, 2); // commutation > communication
benkatz 43:dfb72608639c 348
benkatz 37:c0f352d6e8e3 349 NVIC_SetPriority(CAN1_RX0_IRQn, 3);
benkatz 26:2b865c00d7e9 350 can.filter(CAN_ID<<21, 0xFFE00004, CANStandard, 0);
benkatz 26:2b865c00d7e9 351 //can.filter(CAN_ID, 0xF, CANStandard, 0);
benkatz 43:dfb72608639c 352
benkatz 28:8c7e29f719c5 353 txMsg.id = CAN_MASTER;
benkatz 28:8c7e29f719c5 354 txMsg.len = 6;
benkatz 26:2b865c00d7e9 355 rxMsg.len = 8;
benkatz 43:dfb72608639c 356 can.attach(&onMsgReceived); // attach 'CAN receive-complete' interrupt handler
benkatz 23:2adf23ee0305 357
benkatz 25:f5741040c4bb 358 prefs.load(); // Read flash
benkatz 37:c0f352d6e8e3 359 if(isnan(E_OFFSET)){E_OFFSET = 0.0f;}
benkatz 37:c0f352d6e8e3 360 if(isnan(M_OFFSET)){M_OFFSET = 0.0f;}
benkatz 25:f5741040c4bb 361 spi.SetElecOffset(E_OFFSET); // Set position sensor offset
benkatz 37:c0f352d6e8e3 362 spi.SetMechOffset(M_OFFSET);
benkatz 23:2adf23ee0305 363 int lut[128] = {0};
benkatz 23:2adf23ee0305 364 memcpy(&lut, &ENCODER_LUT, sizeof(lut));
benkatz 25:f5741040c4bb 365 spi.WriteLUT(lut); // Set potision sensor nonlinearity lookup table
benkatz 23:2adf23ee0305 366
benkatz 26:2b865c00d7e9 367 pc.baud(921600); // set serial baud rate
benkatz 20:bf9ea5125d52 368 wait(.01);
benkatz 23:2adf23ee0305 369 pc.printf("\n\r\n\r HobbyKing Cheetah\n\r\n\r");
benkatz 20:bf9ea5125d52 370 wait(.01);
benkatz 23:2adf23ee0305 371 printf("\n\r Debug Info:\n\r");
benkatz 32:ccac5da77844 372 printf(" Firmware Version: %s\n\r", VERSION_NUM);
benkatz 23:2adf23ee0305 373 printf(" ADC1 Offset: %d ADC2 Offset: %d\n\r", controller.adc1_offset, controller.adc2_offset);
benkatz 23:2adf23ee0305 374 printf(" Position Sensor Electrical Offset: %.4f\n\r", E_OFFSET);
benkatz 37:c0f352d6e8e3 375 printf(" Output Zero Position: %.4f\n\r", M_OFFSET);
benkatz 24:58c2d7571207 376 printf(" CAN ID: %d\n\r", CAN_ID);
benkatz 23:2adf23ee0305 377
benkatz 23:2adf23ee0305 378 pc.attach(&serial_interrupt); // attach serial interrupt
benkatz 22:60276ba87ac6 379
benkatz 23:2adf23ee0305 380 state_change = 1;
benkatz 20:bf9ea5125d52 381
benkatz 22:60276ba87ac6 382
benkatz 0:4e1c4df6aabd 383 while(1) {
benkatz 11:c83b18d41e54 384
benkatz 0:4e1c4df6aabd 385 }
benkatz 0:4e1c4df6aabd 386 }