Aditya Mehrotra
Modified Motor Driver Firmware to include Flash + Thermal
Dependencies: FastPWM3 mbed-dev-STM-lean
Diff: main.cpp
- Revision:
- 26:2b865c00d7e9
- Parent:
- 25:f5741040c4bb
- Child:
- 27:501fee691e0e
diff -r f5741040c4bb -r 2b865c00d7e9 main.cpp
--- a/main.cpp Sun Apr 09 03:05:52 2017 +0000
+++ b/main.cpp Mon May 01 15:22:58 2017 +0000
@@ -6,21 +6,28 @@
#define REST_MODE 0
#define CALIBRATION_MODE 1
-#define TORQUE_MODE 2
-#define PD_MODE 3
+#define MOTOR_MODE 2
#define SETUP_MODE 4
#define ENCODER_MODE 5
+#define P_MASK
+#define D_MASK
+#define KP_MASK
+#define KD_MASK
+#define TFF_MASK
+/*
const unsigned int BOARDNUM = 0x2;
//const unsigned int a_id =
-const unsigned int TX_ID = 0x0100;
const unsigned int cmd_ID = (BOARDNUM<<8) + 0x7;
+*/
+const unsigned int TX_ID = 0x01;
+
-float __float_reg[64];
-int __int_reg[256];
+float __float_reg[64]; // Floats stored in flash
+int __int_reg[256]; // Ints stored in flash. Includes position sensor calibration lookup table
-#include "CANnucleo.h"
+
#include "mbed.h"
#include "PositionSensor.h"
#include "structs.h"
@@ -36,6 +43,7 @@
#include "user_config.h"
#include "PreferenceWriter.h"
+
PreferenceWriter prefs(6);
GPIOStruct gpio;
@@ -44,70 +52,112 @@
VelocityEstimatorStruct velocity;
-CANnucleo::CAN can(PB_8, PB_9); // CAN Rx pin name, CAN Tx pin name
-CANnucleo::CANMessage rxMsg;
-CANnucleo::CANMessage txMsg;
-int ledState;
-int counter = 0;
-int canCmd = 1000;
-volatile bool msgAvailable = false;
-
-DigitalOut toggle(PA_0);
-Ticker loop;
-/**
- * @brief 'CAN receive-complete' interrup handler.
- * @note Called on arrival of new CAN message.
- * Keep it as short as possible.
- * @param
- * @retval
- */
-void onMsgReceived() {
- msgAvailable = true;
- //printf("ping\n\r");
-}
+//using namespace CANnucleo;
-void sendCMD(int TX_addr, int val){
- txMsg.clear(); //clear Tx message storage
- txMsg.id = TX_addr;
- txMsg << val;
- can.write(txMsg);
- //wait(.1);
-
- }
-
-void readCAN(void){
- if(msgAvailable) {
- msgAvailable = false; // reset flag for next use
- can.read(rxMsg); // read message into Rx message storage
- // Filtering performed by software:
- if(rxMsg.id == cmd_ID) { // See comments in CAN.cpp for filtering performed by hardware
- rxMsg >> canCmd; // extract first data item
- }
- }
- }
-
-void cancontroller(void){
- //printf("%d\n\r", canCmd);
- readCAN();
- //sendCMD(TX_ID, canCmd);
+CAN can(PB_8, PB_9); // CAN Rx pin name, CAN Tx pin name
+CANMessage rxMsg;
+CANMessage txMsg;
- }
-
Serial pc(PA_2, PA_3);
-PositionSensorAM5147 spi(16384, 0.0, NPP);
-PositionSensorEncoder encoder(4096, 0, 21);
+PositionSensorAM5147 spi(16384, 0.0, NPP);
+PositionSensorEncoder encoder(4096, 0, NPP);
+
+
+DigitalOut toggle(PA_0);
volatile int count = 0;
volatile int state = REST_MODE;
volatile int state_change;
+ #define P_MIN -12.5f
+ #define P_MAX 12.5f
+ #define V_MIN -30.0f
+ #define V_MAX 30.0f
+ #define KP_MIN 0.0f
+ #define KP_MAX 500.0f
+ #define KD_MIN 0.0f
+ #define KD_MAX 100.0f
+ #define T_MIN -18.0f
+ #define T_MAX 18.0f
+
+
+/// CAN Reply Packet Structure ///
+/// 16 bit position, between -4*pi and 4*pi
+/// 12 bit velocity, between -30 and + 30 rad/s
+/// 12 bit current, between -40 and 40;
+/// CAN Packet is 5 8-bit words
+/// Formatted as follows. For each quantity, bit 0 is LSB
+/// 0: [position[15-8]]
+/// 1: [position[7-0]]
+/// 2: [velocity[11-4]]
+/// 3: [velocity[3-0], current[11-8]]
+/// 4: [current[7-0]]
+void pack_reply(CANMessage *msg, float p, float v, float i){
+ int p_int = float_to_uint(p, P_MIN, P_MAX, 16);
+ int v_int = float_to_uint(v, V_MIN, V_MAX, 12);
+ int i_int = float_to_uint(i, -I_MAX, I_MAX, 12);
+ msg->data[0] = p_int>>8;
+ msg->data[1] = p_int&0xFF;
+ msg->data[2] = v_int>>4;
+ msg->data[3] = ((v_int&0xF)<<4) + (i_int>>8);
+ msg->data[4] = i_int&0xFF;
+ }
+
+/// CAN Command Packet Structure ///
+/// 16 bit position command, between -4*pi and 4*pi
+/// 12 bit velocity command, between -30 and + 30 rad/s
+/// 12 bit kp, between 0 and 500 N-m/rad
+/// 12 bit kd, between 0 and 100 N-m*s/rad
+/// 12 bit feed forward torque, between -18 and 18 N-m
+/// CAN Packet is 8 8-bit words
+/// Formatted as follows. For each quantity, bit 0 is LSB
+/// 0: [position[15-8]]
+/// 1: [position[7-0]]
+/// 2: [velocity[11-4]]
+/// 3: [velocity[3-0], kp[11-8]]
+/// 4: [kp[7-0]]
+/// 5: [kd[11-4]]
+/// 6: [kd[3-0], torque[11-8]]
+/// 7: [torque[7-0]]
+void unpack_cmd(CANMessage msg, ControllerStruct * controller){
+ int p_int = (msg.data[0]<<8)|msg.data[1];
+ int v_int = (msg.data[2]<<4)|(msg.data[3]>>4);
+ int kp_int = ((msg.data[3]&0xF)<<8)|msg.data[4];
+ int kd_int = (msg.data[5]<<4)|(msg.data[6]>>4);
+ int t_int = ((msg.data[6]&0xF)<<8)|msg.data[7];
+
+ controller->p_des = uint_to_float(p_int, P_MIN, P_MAX, 16);
+ controller->v_des = uint_to_float(v_int, V_MIN, V_MAX, 12);
+ controller->kp = uint_to_float(kp_int, KP_MIN, KP_MAX, 12);
+ controller->kd = uint_to_float(kd_int, KD_MIN, KD_MAX, 12);
+ controller->t_ff = uint_to_float(t_int, T_MIN, T_MAX, 12);
+
+ /*
+ printf("Received ");
+ printf("%.3f %.3f %.3f %.3f %.3f %.3f", controller->p_des, controller->v_des, controller->kp, controller->kd, controller->t_ff, controller->i_q_ref);
+ printf("\n\r");
+ */
+
+ }
+
+void onMsgReceived() {
+ //msgAvailable = true;
+ //printf("%.3f %.3f %.3f\n\r", controller.theta_mech, controller.dtheta_mech, controller.i_q);
+ can.read(rxMsg);
+ if((rxMsg.id == CAN_ID) && (state == MOTOR_MODE)){
+ unpack_cmd(rxMsg, &controller);
+ pack_reply(&txMsg, controller.theta_mech, controller.dtheta_mech, controller.i_q);
+ can.write(txMsg);
+ }
+
+}
+
void enter_menu_state(void){
printf("\n\r\n\r\n\r");
printf(" Commands:\n\r");
- printf(" t - Torque Mode\n\r");
- printf(" p - PD Mode\n\r");
+ printf(" m - Motor Mode\n\r");
printf(" c - Calibrate Encoder\n\r");
printf(" s - Setup\n\r");
printf(" e - Display Encoder\n\r");
@@ -121,6 +171,7 @@
printf(" %-7s %-25s %-5s %-5s %-5s\n\r\n\r", "prefix", "parameter", "min", "max", "current value");
printf(" %-7s %-25s %-5s %-5s %.1f\n\r", "b", "Current Bandwidth (Hz)", "100", "2000", I_BW);
printf(" %-7s %-25s %-5s %-5s %-5i\n\r", "i", "CAN ID", "0", "127", CAN_ID);
+ printf(" %-7s %-25s %-5s %-5s %-5i\n\r", "m", "CAN Master ID", "0", "127", CAN_MASTER);
printf(" %-7s %-25s %-5s %-5s %.1f\n\r", "l", "Torque Limit (N-m)", "0.0", "18.0", TORQUE_LIMIT);
printf("\n\r To change a value, type 'prefix''value''ENTER'\n\r i.e. 'b1000''ENTER'\n\r\n\r");
state_change = 0;
@@ -128,19 +179,19 @@
void enter_torque_mode(void){
controller.i_d_ref = 0;
- controller.i_q_ref = 1; // Current Setpoints
+ controller.i_q_ref = 6; // Current Setpoints
reset_foc(&controller); // Tesets integrators, and other control loop parameters
gpio.enable->write(1); // Enable gate drive
- GPIOC->ODR ^= (1 << 5); // Turn on status LED
+ GPIOC->ODR |= (1 << 5); // Turn on status LED
state_change = 0;
}
void calibrate(void){
gpio.enable->write(1); // Enable gate drive
- GPIOC->ODR ^= (1 << 5); // Turn on status LED
+ GPIOC->ODR |= (1 << 5); // Turn on status LED
order_phases(&spi, &gpio, &controller, &prefs); // Check phase ordering
calibrate(&spi, &gpio, &controller, &prefs); // Perform calibration procedure
- GPIOC->ODR ^= (1 << 5); // Turn off status LED
+ GPIOC->ODR &= !(1 << 5); // Turn off status LED
wait(.2);
gpio.enable->write(0); // Turn off gate drive
printf("\n\r Calibration complete. Press 'esc' to return to menu\n\r");
@@ -184,24 +235,31 @@
}
break;
- case TORQUE_MODE: // Run torque control
+ case MOTOR_MODE: // Run torque control
if(state_change){
enter_torque_mode();
}
count++;
- controller.theta_elec = spi.GetElecPosition();
+ toggle.write(1);
+ controller.theta_elec = spi.GetElecPosition();
+ controller.theta_mech = spi.GetMechPosition();
+ controller.dtheta_mech = spi.GetMechVelocity();
+ //TIM1->CCR3 = 0x708*(1.0f);
+ //TIM1->CCR1 = 0x708*(1.0f);
+ //TIM1->CCR2 = 0x708*(1.0f);
+
+ //controller.i_q_ref = controller.t_ff/KT_OUT;
+ //torque_control(&controller);
+ controller.i_q_ref = 1;
commutate(&controller, &gpio, controller.theta_elec); // Run current loop
spi.Sample(); // Sample position sensor
+ toggle.write(0);
+
if(count > 100){
count = 0;
- //readCAN();
- //controller.i_q_ref = ((float)(canCmd-1000))/100;
- //pc.printf("%f\n\r ", controller.theta_elec);
+ //printf("%d %d\n\r", controller.adc1_raw, controller.adc2_raw);
}
break;
-
- case PD_MODE:
- break;
case SETUP_MODE:
if(state_change){
enter_setup_state();
@@ -211,9 +269,7 @@
print_encoder();
break;
}
-
-
-
+
}
TIM1->SR = 0x0; // reset the status register
}
@@ -233,6 +289,7 @@
state_change = 1;
char_count = 0;
cmd_id = 0;
+ GPIOC->ODR &= !(1 << 5);
for(int i = 0; i<8; i++){cmd_val[i] = 0;}
}
if(state == REST_MODE){
@@ -241,8 +298,8 @@
state = CALIBRATION_MODE;
state_change = 1;
break;
- case 't':
- state = TORQUE_MODE;
+ case 'm':
+ state = MOTOR_MODE;
state_change = 1;
break;
case 'e':
@@ -264,6 +321,9 @@
case 'i':
CAN_ID = atoi(cmd_val);
break;
+ case 'm':
+ CAN_MASTER = atoi(cmd_val);
+ break;
case 'l':
TORQUE_LIMIT = fmaxf(fminf(atof(cmd_val), 18.0f), 0.0f);
break;
@@ -310,24 +370,27 @@
Init_All_HW(&gpio); // Setup PWM, ADC, GPIO
wait(.1);
- //TIM1->CR1 |= TIM_CR1_UDIS;
- gpio.enable->write(1); // Enable gate drive
- gpio.pwm_u->write(1.0f); // Write duty cycles
- gpio.pwm_v->write(1.0f);
- gpio.pwm_w->write(1.0f);
+ gpio.enable->write(1);
+ TIM1->CCR3 = 0x708*(1.0f); // Write duty cycles
+ TIM1->CCR2 = 0x708*(1.0f);
+ TIM1->CCR1 = 0x708*(1.0f);
zero_current(&controller.adc1_offset, &controller.adc2_offset); // Measure current sensor zero-offset
- //gpio.enable->write(0);
+ gpio.enable->write(0);
reset_foc(&controller); // Reset current controller
-
- TIM1->CR1 ^= TIM_CR1_UDIS; //enable interrupt
+ TIM1->CR1 ^= TIM_CR1_UDIS;
+ //TIM1->CR1 |= TIM_CR1_UDIS; //enable interrupt
wait(.1);
NVIC_SetPriority(TIM5_IRQn, 2); // set interrupt priority
+
can.frequency(1000000); // set bit rate to 1Mbps
- can.attach(&onMsgReceived); // attach 'CAN receive-complete' interrupt handler
- can.filter(0x020 << 25, 0xF0000004, CANAny, 0);
-
+ can.filter(CAN_ID<<21, 0xFFE00004, CANStandard, 0);
+ //can.filter(CAN_ID, 0xF, CANStandard, 0);
+ can.attach(&onMsgReceived); // attach 'CAN receive-complete' interrupt handler
+ txMsg.id = TX_ID;
+ txMsg.len = 5;
+ rxMsg.len = 8;
prefs.load(); // Read flash
spi.SetElecOffset(E_OFFSET); // Set position sensor offset
@@ -335,7 +398,7 @@
memcpy(&lut, &ENCODER_LUT, sizeof(lut));
spi.WriteLUT(lut); // Set potision sensor nonlinearity lookup table
- pc.baud(115200); // set serial baud rate
+ pc.baud(921600); // set serial baud rate
wait(.01);
pc.printf("\n\r\n\r HobbyKing Cheetah\n\r\n\r");
wait(.01);