Code for 'Smart Regulator' featured in 'Model Engineer', November 2020 on. Contains all work to August 2020 including all code described. Top level algorithm development is quite spares, leaving some work for you! Any questions - jon@jons-workshop.com
Dependencies: mbed BufferedSerial Servo2 PCT2075 I2CEeprom FastPWM
Alternator.h
- Committer:
- JonFreeman
- Date:
- 2020-04-25
- Revision:
- 1:450090bdb6f4
- Parent:
- 0:77803b3ee157
- Child:
- 2:8e7b51353f32
File content as of revision 1:450090bdb6f4:
#include "Servo.h" #include "BufferedSerial.h" #define SPEED_CONTROL_ENABLE // Includes engine revs servo control loop const int TICKOVER_RPM = 2500; const int MAX_RPM_LIMIT = 7500; const double SERVO_MAX = 0.5; const int eeprom_page = 17; // Determines where in eeprom 'settings' reside const int lut_seg_size = 60; // steps per thousand RPM const int lut_size = lut_seg_size * 8; // 8 segments - 0-1, 1-2, 2-3, 3-4 etc 000 rpm class VEXT_Data { public: uint32_t t_on, t_off, measured_pw_us, measured_period, rise_count, fall_count; double duty_cycle () { return (double) measured_pw_us / (double) measured_period; } ; VEXT_Data () { // constructor t_on = t_off = measured_pw_us = measured_period = rise_count = fall_count = 0; } ; } ; class eeprom_settings { char settings [36]; double max_pwm_lut [lut_size + 4]; // bool rd_24LC64 (int start_addr, char * dest, int length) ; // bool wr_24LC64 (int start_addr, char * dest, int length) ; // bool set_24LC64_internal_address (int start_addr) ; // bool ack_poll () ; void build_lut () ; public: eeprom_settings (); // Constructor double get_pwm (int) ; char rd (uint32_t) ; // Read one setup char value from private buffer 'settings' bool rd (char *, uint32_t) ; // Read one setup char value from private buffer 'settings' bool wr (char, uint32_t) ; // Write one setup char value to private buffer 'settings' bool save () ; // Write 'settings' buffer to EEPROM bool load () ; // Get 'settings' from EEPROM bool set_defaults (); // Put default settings into EEPROM and local buffer // uint32_t errs () ; // Return errors } ; enum {RPM0, RPM1, RPM2, RPM3, RPM4, RPM5, RPM6, RPM7, RPM8, PWM_SCALE, FUT1, FUT2, FUT3, FUT4, FUT5} ; // struct optpar { int min, max, def; // min, max, default const char * t; // description } ; const int MAX_PARAMS = 10; struct parameters { int32_t times[50]; int32_t position_in_list, last_time, numof_dbls; double dbl[MAX_PARAMS]; } ; const int PWM_PERIOD_US = 2400 ;