Dual Brushless Motor ESC, 10-62V, up to 50A per motor. Motors ganged or independent, multiple control input methods, cycle-by-cycle current limit, speed mode and torque mode control. Motors tiny to kW. Speed limit and other parameters easily set in firmware. As used in 'The Brushless Brutalist' locomotive - www.jons-workshop.com. See also Model Engineer magazine June-October 2019.
Dependencies: mbed BufferedSerial Servo PCT2075 FastPWM
Update 17th August 2020 Radio control inputs completed
F411RE.h
- Committer:
- JonFreeman
- Date:
- 2019-09-29
- Revision:
- 13:ef7a06fa11de
File content as of revision 13:ef7a06fa11de:
#include "STM3_ESC.h"
// Feb 2018 Now using DGD21032 mosfet drivers via 74HC00 pwm gates (low side) - GOOD, works well with auto-tickle of high side drivers
// Jan 2019 Trying to add two Radio Control inputs on PC_14 and PC_15, previously connected to unused LF Xtal.
// Problem - Appears to conflict with serial port used for comms with controller
// Earlier efforts to use 'Servo' ports as 'you choose' between I/O failed as pins not capable of use as 'InterruptIn'
// CORRECTION Comms problem with Touch Screen was insufficient pull-up on STM3_ESC opto. Change R12 from 1k to 470R
// Experiment disabling RC inputs to see if clearing serial conflict is possible
// Port A -> MotorA, Port B -> MotorB
const uint16_t
// This is where port bits get assigned to motor output phase switches.
// Phases are U, V and W.
// Each phase uses two bits, one for the low side switch, one for the high side switch.
//MotorN_port_bits[] = {UL, VL, WL, UH, VH, WH}, // Order must be as shown - 3 low side switches U,V,W followed by 3 high side switches U,V,W
MotorA_port_bits[] = {0, 6, 4, 1, 7, 8}, // List of port A bits used to drive motor A UL, VL, WL, UH, VH, WH
MotorB_port_bits[] = {0, 1, 2, 10, 12, 13}, // List of port B bits used to drive motor B UL, VL, WL, UH, VH, WH
// Using port bit info in the two lines above, the compiler sorts all this into creation of lookup table
// to provide correct energisation sequencing as motors rotate.
// You need concern yourself no further about any of this.
AUL = (1 << MotorA_port_bits[0]),
AVL = (1 << MotorA_port_bits[1]), // These are which port bits connect to which mosfet driver
AWL = (1 << MotorA_port_bits[2]),
AUH = (1 << MotorA_port_bits[3]),
AVH = (1 << MotorA_port_bits[4]),
AWH = (1 << MotorA_port_bits[5]),
AUHVL = AUH | AVL, // Each of 6 possible output energisations made up of one hi and one low
AVHUL = AVH | AUL,
AUHWL = AUH | AWL,
AWHUL = AWH | AUL,
AVHWL = AVH | AWL,
AWHVL = AWH | AVL,
KEEP_L_MASK_A = AUL | AVL | AWL,
KEEP_H_MASK_A = AUH | AVH | AWH,
BRA = AUL | AVL | AWL, // All low side switches on (and all high side off) for braking
BUL = (1 << MotorB_port_bits[0]), // Likewise for MotorB but different port bits on different port
BVL = (1 << MotorB_port_bits[1]),
BWL = (1 << MotorB_port_bits[2]),
BUH = (1 << MotorB_port_bits[3]),
BVH = (1 << MotorB_port_bits[4]),
BWH = (1 << MotorB_port_bits[5]),
BUHVL = BUH | BVL,
BVHUL = BVH | BUL,
BUHWL = BUH | BWL,
BWHUL = BWH | BUL,
BVHWL = BVH | BWL,
BWHVL = BWH | BVL,
KEEP_L_MASK_B = BUL | BVL | BWL,
KEEP_H_MASK_B = BUH | BVH | BWH,
BRB = BUL | BVL | BWL,
PORT_A_MASK = AUL | AVL | AWL | AUH | AVH | AWH, // NEW METHOD FOR DGD21032 MOSFET DRIVERS
PORT_B_MASK = BUL | BVL | BWL | BUH | BVH | BWH;
//PortOut MotA (PortA, PORT_A_MASK); // Activate output ports to motor drivers
//PortOut MotB (PortB, PORT_B_MASK);
// Pin 1 VBAT NET +3V3
//DigitalIn J3 (PC_13, PullUp);// Pin 2 Jumper pulls to GND, R floats Hi
#ifdef TEMP_SENSOR_ENABLE
InterruptIn Temperature_pin (PC_13);// Pin 2 June 2018 - taken for temperature sensor - hard wired to T1 due to wrong thought T1 could be InterruptIn
#endif
// Pin 3 PC14-OSC32_IN NET O32I Xtal chucked off these pins, now needed for RC inputs
// Pin 4 PC15-OSC32_OUT NET O32O
// Pin 5 PH0-OSC_IN NET PH1
// Pin 6 PH1-OSC_OUT NET PH1
// Pin 7 NRST NET NRST
AnalogIn Ain_DriverPot (PC_0); // Pin 8 Spare Analogue in, net SAIN fitted with external pull-down
AnalogIn Ain_SystemVolts (PC_1); // Pin 9
#define MOT_A_I_ADC PC_2
#define MOT_B_I_ADC PC_3
//AnalogIn Motor_A_Current (PC_2); // Pin 10
//AnalogIn Motor_B_Current (PC_3); // Pin 11
// Pin 12 VSSA/VREF- NET GND
// Pin 13 VDDA/VREF+ NET +3V3
// Pin 14 Port_A AUL
// Pin 15 Port_A AUH
// Pins 16, 17 BufferedSerial pc
BufferedSerial pc (PA_2, PA_3, 2048, 4, NULL); // Pins 16, 17 tx, rx to pc via usb lead
// Pin 18 VSS NET GND
// Pin 19 VDD NET +3V3
// Pin 20 Port_A AWL
// Pin 21 DigitalOut led1(LED1);
DigitalOut LED (PA_5); // Pin 21
// Pin 22 Port_A AVL
// Pin 23 Port_A AVH
//InterruptIn MBH2 (PC_4); // Pin 24
//InterruptIn MBH3 (PC_5); // Pin 25
#define _MBH2 PC_4
#define _MBH3 PC_5
// Pin 26 Port_B BUL
// Pin 27 Port_B BVL
// Pin 28 Port_B BWL
// Pin 29 Port_B BUH
// Pin 30 VCAP1
// Pin 31 VSS
// Pin 32 VDD
// Pin 33 Port_B BVH
// Pin 34 Port_B BWH
DigitalOut T4 (PB_14); // Pin 35
DigitalOut T3 (PB_15); // Pin 36
// BufferedSerial com2 pins 37 Tx, 38 Rx
BufferedSerial com2 (PC_6, PC_7); // Pins 37, 38 tx, rx to Touch Screen Controller
#define APWMV PC_8
#define APWMI PC_9
//FastPWM A_MAX_V_PWM (PC_8, PWM_PRESECALER_DEFAULT), // Pin 39 pwm3/3
// A_MAX_I_PWM (PC_9, PWM_PRESECALER_DEFAULT); // pin 40, prescaler value pwm3/4
//InterruptIn MotB_Hall (PA_8); // Pin 41
// Pin 41 Port_A AWH
// BufferedSerial com3 pins 42 Tx, 43 Rx
//InterruptIn tryseredge (PA_9);
BufferedSerial com3 (PA_9, PA_10); // Pins 42, 43 tx, rx to any aux module
// PA_9 is Tx. I wonder, can we also use InterruptIn on this pin to generate interrupts on tx bit transitions ? Let's find out !
// No.
// Feb 2018 Pins 44 and 45 now liberated, could use for serial or other uses
//BufferedSerial extra_ser (PA_11, PA_12); // Pins 44, 45 tx, rx to XBee module
DigitalOut T2 (PA_11); // Pin 44
// was DigitalOut T1 (PA_12); // Pin 45
//InterruptIn T1 (PA_12); // Pin 45 now input counting pulses from LMT01 temperature sensor
// InterruptIn DOES NOT WORK ON PA_12. Boards are being made, will have to wire link PA12 to PC13
DigitalIn T1 (PA_12);
////InterruptIn T1 (PC_13); // Pin 45 now input counting pulses from LMT01 temperature sensor
// Pin 46 SWDIO
// Pin 47 VSS
// Pin 48 VDD
// Pin 49 SWCLK
//Was DigitalOut T5 (PA_15); // Pin 50
DigitalIn T5 (PA_15); // Pin 50 now fwd/rev from remote control box if fitted
#define _MAH1 PC_10 // Pin 51
#define _MAH2 PC_11 // Pin 52
#define _MAH3 PC_12 // Pin 53
//InterruptIn MBH1 (PD_2); // Pin 54
#define _MBH1 PD_2
DigitalOut T6 (PB_3); // Pin 55
#define BPWMV PB_4
#define BPWMI PB_5
//FastPWM B_MAX_V_PWM (PB_4, PWM_PRESECALER_DEFAULT), // Pin 56 pwm3/3
// B_MAX_I_PWM (PB_5, PWM_PRESECALER_DEFAULT); // pin 57, prescaler value pwm3/4
//I2C i2c (PB_7, PB_6); // Pins 58, 59 For 24LC64 eeprom
#define SDA_PIN PB_7
#define SCL_PIN PB_6
// Pin 60 BOOT0
// Servo pins, 2 off. Configured as Input to read radio control receiver
// ** Update December 2018 **
// These pins can not be used as InterruptIn.
// Can be used as outputs by 'Servo'
// If used as servo output, code gives pin to 'Servo' - seems to work
//InterruptIn Servo1_i (PB_8); // Pin 61 to read output from rc rx
//InterruptIn Servo2_i (PB_9); // Pin 62 to read output from rc rx
// *** NOTE *** Above InterruptIn Servo using PB pins seems not to work, probably due to other Port B pins used as PortOut (try PortInOut?)
// Nov 2018 - Yet to try using PC14, PC15, free now as 32k768 xtal not fitted
// Pin 63 VSS
// Pin 64 VDD
// SYSTEM CONSTANTS
// December 2018 ** NEED TO PROVE SERVO OUT WORKS ** YES, DONE.
Servo Servo1 (PB_8) ;
// Servos[0] = & Servo1;
Servo Servo2 (PB_9) ;
// Servos[1] = & Servo2;