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conf_general.c
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/*
Copyright 2016 - 2021 Benjamin Vedder [email protected]
This file is part of the VESC firmware.
The VESC firmware 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.
The VESC firmware 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma GCC push_options
#pragma GCC optimize ("Os")
#include "conf_general.h"
#include "ch.h"
#include "eeprom.h"
#include "mcpwm.h"
#include "mcpwm_foc.h"
#include "mc_interface.h"
#include "utils_math.h"
#include "utils_sys.h"
#include "stm32f4xx_conf.h"
#include "timeout.h"
#include "commands.h"
#include "encoder/encoder.h"
#include "comm_can.h"
#include "app.h"
#include "confgenerator.h"
#include "mempools.h"
#include "worker.h"
#include "crc.h"
#include "terminal.h"
#include "firmware_metadata.h"
#include <string.h>
#include <math.h>
//#define TEST_BAD_MC_CRC
//#define TEST_BAD_APP_CRC
// EEPROM settings
#define EEPROM_BASE_MCCONF 1000
#define EEPROM_BASE_APPCONF 2000
#define EEPROM_BASE_HW 3000
#define EEPROM_BASE_CUSTOM 4000
#define EEPROM_BASE_MCCONF_2 5000
#define EEPROM_BASE_BACKUP 6000
// Global variables
uint16_t VirtAddVarTab[NB_OF_VAR];
bool conf_general_permanent_nrf_found = false;
__attribute__((section(".ram4"))) volatile backup_data g_backup;
// Private functions
static bool read_eeprom_var(eeprom_var *v, int address, uint16_t base);
static bool store_eeprom_var(eeprom_var *v, int address, uint16_t base);
void conf_general_init(void) {
// First, make sure that all relevant virtual addresses are assigned for page swapping.
memset(VirtAddVarTab, 0, sizeof(VirtAddVarTab));
int ind = 0;
for (unsigned int i = 0;i < (sizeof(mc_configuration) / 2);i++) {
VirtAddVarTab[ind++] = EEPROM_BASE_MCCONF + i;
}
for (unsigned int i = 0;i < (sizeof(app_configuration) / 2);i++) {
VirtAddVarTab[ind++] = EEPROM_BASE_APPCONF + i;
}
for (unsigned int i = 0;i < (EEPROM_VARS_HW * 2);i++) {
VirtAddVarTab[ind++] = EEPROM_BASE_HW + i;
}
for (unsigned int i = 0;i < (EEPROM_VARS_CUSTOM * 2);i++) {
VirtAddVarTab[ind++] = EEPROM_BASE_CUSTOM + i;
}
for (unsigned int i = 0;i < (sizeof(backup_data) / 2);i++) {
VirtAddVarTab[ind++] = EEPROM_BASE_BACKUP + i;
}
FLASH_Unlock();
FLASH_ClearFlag(FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR |
FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
EE_Init();
FLASH_Lock();
// Read backup data
bool is_ok = true;
backup_data backup_tmp;
uint8_t *data_addr = (uint8_t*)&backup_tmp;
uint16_t var;
for (unsigned int i = 0;i < (sizeof(backup_data) / 2);i++) {
if (EE_ReadVariable(EEPROM_BASE_BACKUP + i, &var) == 0) {
data_addr[2 * i] = (var >> 8) & 0xFF;
data_addr[2 * i + 1] = var & 0xFF;
} else {
is_ok = false;
break;
}
}
if (!is_ok) {
memset(data_addr, 0, sizeof(backup_data));
// If the missing data is a result of programming it might still be in RAM4. Check
// and recover the valid values one by one.
if (g_backup.odometer_init_flag == BACKUP_VAR_INIT_CODE) {
backup_tmp.odometer = g_backup.odometer;
}
if (g_backup.runtime_init_flag == BACKUP_VAR_INIT_CODE) {
backup_tmp.runtime = g_backup.runtime;
}
if (g_backup.hw_config_init_flag == BACKUP_VAR_INIT_CODE) {
memcpy((void*)backup_tmp.hw_config, (uint8_t*)g_backup.hw_config, sizeof(g_backup.hw_config));
}
}
backup_tmp.odometer_init_flag = BACKUP_VAR_INIT_CODE;
backup_tmp.runtime_init_flag = BACKUP_VAR_INIT_CODE;
backup_tmp.hw_config_init_flag = BACKUP_VAR_INIT_CODE;
g_backup = backup_tmp;
conf_general_store_backup_data();
}
/*
* Store backup data to emulated eeprom. Currently this is only done from the shutdown function, which
* only works if the hardware has a power switch. It would be possible to do this when the input voltage
* drops (e.g. on FAULT_CODE_UNDER_VOLTAGE) to not rely on a power switch. The risk with that is that
* a page swap might longer than the capacitors have voltage left, which could make cause the motor and
* app config to get lost.
*/
bool conf_general_store_backup_data(void) {
mc_interface_ignore_input_both(5000);
mc_interface_release_motor_override_both();
if (!mc_interface_wait_for_motor_release_both(3.0)) {
return 100;
}
utils_sys_lock_cnt();
timeout_configure_IWDT_slowest();
bool is_ok = true;
uint8_t *data_addr = (uint8_t*)&g_backup;
uint16_t var;
FLASH_Unlock();
FLASH_ClearFlag(FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR |
FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
for (unsigned int i = 0;i < (sizeof(backup_data) / 2);i++) {
var = (data_addr[2 * i] << 8) & 0xFF00;
var |= data_addr[2 * i + 1] & 0xFF;
if (EE_WriteVariable(EEPROM_BASE_BACKUP + i, var) != FLASH_COMPLETE) {
is_ok = false;
break;
}
}
FLASH_Lock();
timeout_configure_IWDT();
mc_interface_ignore_input_both(100);
utils_sys_unlock_cnt();
return is_ok;
}
/**
* Read hw-specific variable from emulated EEPROM.
*
* @param v
* The variable to read the result from.
*
* @param address
* Mapped address in EEPROM. Range 0 to 31.
*
* @return
* true for success, false if variable was not found.
*/
bool conf_general_read_eeprom_var_hw(eeprom_var *v, int address) {
if (address < 0 || address >= EEPROM_VARS_HW) {
return false;
}
return read_eeprom_var(v, address, EEPROM_BASE_HW);
}
/**
* Read custom variable from emulated EEPROM.
*
* @param v
* The variable to read the result from.
*
* @param address
* Mapped address in EEPROM. Range 0 to 127.
*
* @return
* true for success, false if variable was not found.
*/
bool conf_general_read_eeprom_var_custom(eeprom_var *v, int address) {
if (address < 0 || address >= EEPROM_VARS_CUSTOM) {
return false;
}
return read_eeprom_var(v, address, EEPROM_BASE_CUSTOM);
}
/**
* Store hw-specific variable to emulated EEPROM.
*
* @param v
* The variable to store the result in.
*
* @param address
* Mapped address in EEPROM. Range 0 to 31.
*
* @return
* true for success, false if something went wrong.
*/
bool conf_general_store_eeprom_var_hw(eeprom_var *v, int address) {
if (address < 0 || address >= EEPROM_VARS_HW) {
return false;
}
return store_eeprom_var(v, address, EEPROM_BASE_HW);
}
/**
* Store custom variable to emulated EEPROM.
*
* @param v
* The variable to store the result in.
*
* @param address
* Mapped address in EEPROM. Range 0 to 127.
*
* @return
* true for success, false if something went wrong.
*/
bool conf_general_store_eeprom_var_custom(eeprom_var *v, int address) {
if (address < 0 || address >= EEPROM_VARS_CUSTOM) {
return false;
}
return store_eeprom_var(v, address, EEPROM_BASE_CUSTOM);
}
static bool read_eeprom_var(eeprom_var *v, int address, uint16_t base) {
bool is_ok = true;
uint16_t var0, var1;
if (EE_ReadVariable(base + 2 * address, &var0) == 0 &&
EE_ReadVariable(base + 2 * address + 1, &var1) == 0) {
uint32_t res = ((uint32_t)var0) << 16 | var1;
v->as_u32 = res;
} else {
is_ok = false;
}
return is_ok;
}
static bool store_eeprom_var(eeprom_var *v, int address, uint16_t base) {
bool is_ok = true;
uint16_t var0, var1;
var0 = v->as_u32 >> 16;
var1 = v->as_u32 & 0xFFFF;
mc_interface_ignore_input_both(5000);
mc_interface_release_motor_override_both();
if (!mc_interface_wait_for_motor_release_both(3.0)) {
return 100;
}
utils_sys_lock_cnt();
timeout_configure_IWDT_slowest();
FLASH_Unlock();
FLASH_ClearFlag(FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR |
FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
if (EE_WriteVariable(base + address * 2, var0) != FLASH_COMPLETE) {
is_ok = false;
}
if (is_ok) {
if (EE_WriteVariable(base + address * 2 + 1, var1) != FLASH_COMPLETE) {
is_ok = false;
}
}
FLASH_Lock();
timeout_configure_IWDT();
mc_interface_ignore_input_both(100);
utils_sys_unlock_cnt();
return is_ok;
}
/**
* Read app_configuration from EEPROM. If this fails, default values will be used.
*
* @param conf
* A pointer to a app_configuration struct to write the read configuration to.
*/
void conf_general_read_app_configuration(app_configuration *conf) {
bool is_ok = true;
uint8_t *conf_addr = (uint8_t*)conf;
uint16_t var;
for (unsigned int i = 0;i < (sizeof(app_configuration) / 2);i++) {
if (EE_ReadVariable(EEPROM_BASE_APPCONF + i, &var) == 0) {
conf_addr[2 * i] = (var >> 8) & 0xFF;
conf_addr[2 * i + 1] = var & 0xFF;
} else {
is_ok = false;
break;
}
}
// check CRC
#ifdef TEST_BAD_APP_CRC
conf->crc++;
#endif
if(conf->crc != app_calc_crc(conf)) {
is_ok = false;
// mc_interface_fault_stop(FAULT_CODE_FLASH_CORRUPTION_APP_CFG, false, false);
fault_data f;
f.fault = FAULT_CODE_FLASH_CORRUPTION_APP_CFG;
terminal_add_fault_data(&f);
}
// Set the default configuration
if (!is_ok) {
confgenerator_set_defaults_appconf(conf);
}
}
/**
* Write app_configuration to EEPROM.
*
* @param conf
* A pointer to the configuration that should be stored.
*/
bool conf_general_store_app_configuration(app_configuration *conf) {
mc_interface_ignore_input_both(5000);
mc_interface_release_motor_override_both();
if (!mc_interface_wait_for_motor_release_both(3.0)) {
return false;
}
utils_sys_lock_cnt();
timeout_configure_IWDT_slowest();
bool is_ok = true;
uint8_t *conf_addr = (uint8_t*)conf;
uint16_t var;
conf->crc = app_calc_crc(conf);
FLASH_Unlock();
FLASH_ClearFlag(FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR |
FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
for (unsigned int i = 0;i < (sizeof(app_configuration) / 2);i++) {
var = (conf_addr[2 * i] << 8) & 0xFF00;
var |= conf_addr[2 * i + 1] & 0xFF;
if (EE_WriteVariable(EEPROM_BASE_APPCONF + i, var) != FLASH_COMPLETE) {
is_ok = false;
break;
}
}
FLASH_Lock();
timeout_configure_IWDT();
mc_interface_ignore_input_both(100);
utils_sys_unlock_cnt();
return is_ok;
}
/**
* Read mc_configuration from EEPROM. If this fails, default values will be used.
*
* @param conf
* A pointer to a mc_configuration struct to write the read configuration to.
*/
void conf_general_read_mc_configuration(mc_configuration *conf, bool is_motor_2) {
bool is_ok = true;
uint8_t *conf_addr = (uint8_t*)conf;
uint16_t var;
unsigned int base = is_motor_2 ? EEPROM_BASE_MCCONF_2 : EEPROM_BASE_MCCONF;
for (unsigned int i = 0;i < (sizeof(mc_configuration) / 2);i++) {
if (EE_ReadVariable(base + i, &var) == 0) {
conf_addr[2 * i] = (var >> 8) & 0xFF;
conf_addr[2 * i + 1] = var & 0xFF;
} else {
is_ok = false;
break;
}
}
// check CRC
#ifdef TEST_BAD_MC_CRC
conf->crc++;
#endif
if(conf->crc != mc_interface_calc_crc(conf, is_motor_2)) {
is_ok = false;
// mc_interface_fault_stop(FAULT_CODE_FLASH_CORRUPTION_MC_CFG, is_motor_2, false);
fault_data f;
f.fault = FAULT_CODE_FLASH_CORRUPTION_MC_CFG;
terminal_add_fault_data(&f);
}
if (!is_ok) {
confgenerator_set_defaults_mcconf(conf);
}
}
/**
* Write mc_configuration to EEPROM.
*
* @param conf
* A pointer to the configuration that should be stored.
*/
bool conf_general_store_mc_configuration(mc_configuration *conf, bool is_motor_2) {
mc_interface_ignore_input_both(5000);
mc_interface_release_motor_override_both();
if (!mc_interface_wait_for_motor_release_both(3.0)) {
return false;
}
utils_sys_lock_cnt();
timeout_configure_IWDT_slowest();
bool is_ok = true;
uint8_t *conf_addr = (uint8_t*)conf;
unsigned int base = is_motor_2 ? EEPROM_BASE_MCCONF_2 : EEPROM_BASE_MCCONF;
conf->crc = mc_interface_calc_crc(conf, is_motor_2);
FLASH_Unlock();
FLASH_ClearFlag(FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR |
FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
for (unsigned int i = 0;i < (sizeof(mc_configuration) / 2);i++) {
uint16_t var = (conf_addr[2 * i] << 8) & 0xFF00;
var |= conf_addr[2 * i + 1] & 0xFF;
if (EE_WriteVariable(base + i, var) != FLASH_COMPLETE) {
is_ok = false;
break;
}
}
FLASH_Lock();
timeout_configure_IWDT();
mc_interface_ignore_input_both(100);
utils_sys_unlock_cnt();
return is_ok;
}
bool conf_general_detect_motor_param(float current, float min_rpm, float low_duty,
float *int_limit, float *bemf_coupling_k, int8_t *hall_table, int *hall_res) {
int ok_steps = 0;
const float spinup_to_duty = 0.5;
mc_configuration *mcconf = mempools_alloc_mcconf();
mc_configuration *mcconf_old = mempools_alloc_mcconf();
*mcconf = *mc_interface_get_configuration();
*mcconf_old = *mcconf;
mcconf->motor_type = MOTOR_TYPE_BLDC;
mcconf->sensor_mode = SENSOR_MODE_SENSORLESS;
mcconf->comm_mode = COMM_MODE_INTEGRATE;
mcconf->sl_phase_advance_at_br = 1.0;
mcconf->sl_min_erpm = min_rpm;
mcconf->sl_bemf_coupling_k = 300;
mcconf->sl_cycle_int_limit = 50;
mcconf->sl_min_erpm_cycle_int_limit = 1100;
mcconf->m_invert_direction = false;
mc_interface_set_configuration(mcconf);
// Wait maximum 5s for fault code to disappear
for (int i = 0;i < 500;i++) {
if (mc_interface_get_fault() == FAULT_CODE_NONE) {
break;
}
chThdSleepMilliseconds(10);
}
// Wait one second for things to get ready after
// the fault disappears. (will fry things otherwise...)
chThdSleepMilliseconds(1000);
// Disable timeout
systime_t tout = timeout_get_timeout_msec();
float tout_c = timeout_get_brake_current();
KILL_SW_MODE tout_ksw = timeout_get_kill_sw_mode();
timeout_reset();
timeout_configure(60000, 0.0, KILL_SW_MODE_DISABLED);
mc_interface_lock();
mc_interface_lock_override_once();
mc_interface_set_current(current);
// Try to spin up the motor. Up to three attempts with different settings are made.
bool started = false;
for (int i = 0;i < 3;i++) {
if (i == 1) {
mc_interface_lock_override_once();
mc_interface_release_motor();
mc_interface_wait_for_motor_release(1.0);
mcconf->sl_min_erpm = 2 * min_rpm;
mcconf->sl_cycle_int_limit = 20;
mc_interface_lock_override_once();
mc_interface_set_configuration(mcconf);
chThdSleepMilliseconds(1000);
mc_interface_lock_override_once();
mc_interface_set_current(current);
} else if (i == 2) {
mc_interface_lock_override_once();
mc_interface_release_motor();
mc_interface_wait_for_motor_release(1.0);
mcconf->sl_min_erpm = 4 * min_rpm;
mcconf->comm_mode = COMM_MODE_DELAY;
mc_interface_lock_override_once();
mc_interface_set_configuration(mcconf);
chThdSleepMilliseconds(1000);
mc_interface_lock_override_once();
mc_interface_set_current(current);
}
int cnt = 0;
bool switch_done = false;
started = true;
while (mc_interface_get_duty_cycle_now() < spinup_to_duty) {
chThdSleepMilliseconds(1);
cnt++;
if (mc_interface_get_duty_cycle_now() >= (spinup_to_duty / 2.0) && !switch_done) {
mcpwm_switch_comm_mode(COMM_MODE_DELAY);
switch_done = true;
}
if (cnt > 2000 && !switch_done) {
started = false;
break;
}
if (cnt >= 5000) {
started = false;
break;
}
}
if (switch_done) {
break;
}
}
if (!started) {
mc_interface_set_current(0.0);
timeout_configure(tout, tout_c, tout_ksw);
mc_interface_set_configuration(mcconf_old);
mc_interface_unlock();
mempools_free_mcconf(mcconf);
mempools_free_mcconf(mcconf_old);
return false;
}
ok_steps++;
// Reset hall sensor samples
mcpwm_reset_hall_detect_table();
// Run for a while to get hall sensor samples
mc_interface_lock_override_once();
mc_interface_set_duty(spinup_to_duty);
chThdSleepMilliseconds(400);
// Release the motor and wait a few commutations
mc_interface_lock_override_once();
mc_interface_set_current(0.0);
int tacho = mc_interface_get_tachometer_value(0);
for (int i = 0;i < 2000;i++) {
if ((mc_interface_get_tachometer_value(0) - tacho) < 3) {
chThdSleepMilliseconds(1);
} else {
ok_steps++;
break;
}
}
// Average the cycle integrator for 50 commutations
mcpwm_read_reset_avg_cycle_integrator();
tacho = mc_interface_get_tachometer_value(false);
for (int i = 0;i < 3000;i++) {
if ((mc_interface_get_tachometer_value(false) - tacho) < 50) {
chThdSleepMilliseconds(1);
} else {
ok_steps++;
break;
}
}
// Get hall detect result
*hall_res = mcpwm_get_hall_detect_result(hall_table);
*int_limit = mcpwm_read_reset_avg_cycle_integrator();
// Wait for the motor to slow down
for (int i = 0;i < 5000;i++) {
if (mc_interface_get_duty_cycle_now() > low_duty) {
chThdSleepMilliseconds(1);
} else {
ok_steps++;
break;
}
}
mc_interface_lock_override_once();
mc_interface_set_duty(low_duty);
// Average the cycle integrator for 100 commutations
mcpwm_read_reset_avg_cycle_integrator();
tacho = mc_interface_get_tachometer_value(0);
float rpm_sum = 0.0;
float rpm_iterations = 0.0;
for (int i = 0;i < 3000;i++) {
if ((mc_interface_get_tachometer_value(0) - tacho) < 100) {
rpm_sum += mc_interface_get_rpm();
rpm_iterations += 1;
chThdSleepMilliseconds(1);
} else {
ok_steps++;
break;
}
}
float avg_cycle_integrator_running = mcpwm_read_reset_avg_cycle_integrator();
float rpm = rpm_sum / rpm_iterations;
mc_interface_lock_override_once();
mc_interface_release_motor();
mc_interface_wait_for_motor_release(1.0);
// Try to figure out the coupling factor
avg_cycle_integrator_running -= *int_limit;
avg_cycle_integrator_running /= (float)ADC_Value[ADC_IND_VIN_SENS];
avg_cycle_integrator_running *= rpm;
*bemf_coupling_k = avg_cycle_integrator_running;
// Restore settings
mc_interface_set_configuration(mcconf_old);
timeout_configure(tout, tout_c, tout_ksw);
mc_interface_unlock();
mempools_free_mcconf(mcconf);
mempools_free_mcconf(mcconf_old);
return ok_steps == 5 ? true : false;
}
/**
* Try to measure the motor flux linkage.
*
* @param current
* The current so spin up the motor with.
*
* @param duty
* The duty cycle to maintain.
*
* @param min_erpm
* The minimum ERPM for the delay commutation mode.
*
* @param res
* The motor phase resistance.
*
* @param linkage
* The calculated flux linkage.
*
* @return
* True for success, false otherwise.
*/
bool conf_general_measure_flux_linkage(float current, float duty,
float min_erpm, float res, float *linkage) {
mc_configuration *mcconf = mempools_alloc_mcconf();
mc_configuration *mcconf_old = mempools_alloc_mcconf();
*mcconf = *mc_interface_get_configuration();
*mcconf_old = *mcconf;
mcconf->motor_type = MOTOR_TYPE_BLDC;
mcconf->sensor_mode = SENSOR_MODE_SENSORLESS;
mcconf->comm_mode = COMM_MODE_INTEGRATE;
mcconf->sl_phase_advance_at_br = 1.0;
mcconf->sl_min_erpm = min_erpm;
mcconf->m_bldc_f_sw_min = 10000.0;
mcconf->sl_bemf_coupling_k = 300;
mcconf->sl_cycle_int_limit = 50;
mcconf->sl_min_erpm_cycle_int_limit = 1100;
mc_interface_set_configuration(mcconf);
// Wait maximum 5s for fault code to disappear
for (int i = 0;i < 500;i++) {
if (mc_interface_get_fault() == FAULT_CODE_NONE) {
break;
}
chThdSleepMilliseconds(10);
}
if (mc_interface_get_fault() != FAULT_CODE_NONE) {
mc_interface_set_configuration(mcconf_old);
mempools_free_mcconf(mcconf);
mempools_free_mcconf(mcconf_old);
return false;
}
// Wait one second for things to get ready after
// the fault disapears.
chThdSleepMilliseconds(1000);
// Disable timeout
systime_t tout = timeout_get_timeout_msec();
float tout_c = timeout_get_brake_current();
KILL_SW_MODE tout_ksw = timeout_get_kill_sw_mode();
timeout_reset();
timeout_configure(60000, 0.0, KILL_SW_MODE_DISABLED);
mc_interface_lock();
mc_interface_lock_override_once();
mc_interface_set_current(current);
// Try to spin up the motor. Up to three attempts with different settings are made.
bool started = false;
for (int i = 0;i < 4;i++) {
if (i == 1) {
mc_interface_lock_override_once();
mc_interface_release_motor();
mc_interface_wait_for_motor_release(1.0);
mcconf->sl_cycle_int_limit = 250;
mc_interface_lock_override_once();
mc_interface_set_configuration(mcconf);
chThdSleepMilliseconds(1000);
mc_interface_lock_override_once();
mc_interface_set_current(current);
} else if (i == 2) {
mc_interface_lock_override_once();
mc_interface_release_motor();
mc_interface_wait_for_motor_release(1.0);
mcconf->sl_min_erpm = 2 * min_erpm;
mcconf->sl_cycle_int_limit = 20;
mc_interface_lock_override_once();
mc_interface_set_configuration(mcconf);
chThdSleepMilliseconds(1000);
mc_interface_lock_override_once();
mc_interface_set_current(current);
} else if (i == 3) {
mc_interface_lock_override_once();
mc_interface_release_motor();
mc_interface_wait_for_motor_release(1.0);
mcconf->sl_min_erpm = 4 * min_erpm;
mcconf->comm_mode = COMM_MODE_DELAY;
mc_interface_lock_override_once();
mc_interface_set_configuration(mcconf);
chThdSleepMilliseconds(1000);
mc_interface_lock_override_once();
mc_interface_set_current(current);
}
int cnt = 0;
bool switch_done = false;
started = true;
while (mc_interface_get_duty_cycle_now() < duty) {
chThdSleepMilliseconds(1);
cnt++;
if (mc_interface_get_duty_cycle_now() >= (duty / 2.0) && !switch_done) {
mcpwm_switch_comm_mode(COMM_MODE_DELAY);
switch_done = true;
}
if (cnt > 2000 && !switch_done) {
started = false;
break;
}
if (cnt >= 5000) {
started = false;
break;
}
}
if (switch_done) {
break;
}
}
if (!started) {
mc_interface_set_current(0.0);
timeout_configure(tout, tout_c, tout_ksw);
mc_interface_set_configuration(mcconf);
mc_interface_unlock();
mempools_free_mcconf(mcconf);
mempools_free_mcconf(mcconf_old);
return false;
}
mc_interface_lock_override_once();
mc_interface_set_duty(duty);
float avg_voltage = 0.0;
float avg_rpm = 0.0;
float avg_current = 0.0;
float samples = 0.0;
for (int i = 0;i < 2000;i++) {
avg_voltage += GET_INPUT_VOLTAGE() * mc_interface_get_duty_cycle_now();
avg_rpm += mc_interface_get_rpm();
avg_current += mc_interface_get_tot_current();
samples += 1.0;
chThdSleepMilliseconds(1.0);
}
timeout_configure(tout, tout_c, tout_ksw);
mc_interface_set_configuration(mcconf_old);
mc_interface_unlock();
mc_interface_set_current(0.0);
avg_voltage /= samples;
avg_rpm /= samples;
avg_current /= samples;
avg_voltage -= avg_current * res * 2.0;
*linkage = avg_voltage / (sqrtf(3.0) * RPM2RADPS_f(avg_rpm));
mempools_free_mcconf(mcconf);
mempools_free_mcconf(mcconf_old);
return true;
}
/* Calculate DTG register */
uint8_t conf_general_calculate_deadtime(float deadtime_ns, float core_clock_freq) {
uint8_t DTG = 0;
float timebase = 1.0 / (core_clock_freq / 1000000.0) * 1000.0;
if (deadtime_ns <= (timebase * 127.0)) {
DTG = deadtime_ns / timebase;
} else {
if (deadtime_ns <= ((63.0 + 64.0) * 2.0 * timebase)) {
DTG = deadtime_ns / (2.0 * timebase) - 64.0;
DTG |= 0x80;
} else {
if (deadtime_ns <= ((31.0 + 32.0) * 8.0 * timebase)) {
DTG = deadtime_ns / (8.0 * timebase) - 32.0;
DTG |= 0xC0;
} else {
if (deadtime_ns <= ((31.0 + 32) * 16 * timebase)) {
DTG = deadtime_ns / (16.0 * timebase) - 32.0;
DTG |= 0xE0;
} else {
// Deadtime requested is longer than max achievable. Set deadtime at
// longest possible value
DTG = 0xFF;
assert_param(1); //catch this
}
}
}
}
return DTG;
}
/**
* Try to measure the motor flux linkage using open loop FOC control.
*
* @param current
* The Q-axis current to spin up the motor.
*
* @param duty
* Duty cycle % to measure at
*
* @param erpm_per_sec
* Acceleration rate
*
* @param res
* The motor phase resistance.
*
* @param ind
* The motor phase inductance.
*
* @param linkage
* The calculated flux linkage.
*
* @param linkage_undriven
* Flux linkage measured while the motor was undriven.
*
* @param undriven_samples
* Number of flux linkage samples while the motor was undriven.
*
* @param result
* True for success, false for anything else
*
* @return
* Fault code
*/
int conf_general_measure_flux_linkage_openloop(float current, float duty,
float erpm_per_sec, float res, float ind, float *linkage,
float *linkage_undriven, float *undriven_samples, bool *result) {
*result = false;
int fault = FAULT_CODE_NONE;
// Allow using old values when only measuring the flux linkage undriven
if (fabsf(current) <= mc_interface_get_configuration()->cc_min_current) {
if (res <= 0.0) {
res = mc_interface_get_configuration()->foc_motor_r;
}
if (ind <= 0.0) {
ind = mc_interface_get_configuration()->foc_motor_l;
}
}
// Don't let impossible values through.
if (res <= 0.0 || ind <= 0.0) {
return fault;
}
// Calculate kp and ki from supplied resistance and inductance, default to 1000us time constant.
float tc = 1500;
float bw = 1.0 / (tc * 1e-6);
float kp = ind * bw;
float ki = res * bw;
mc_configuration *mcconf = mempools_alloc_mcconf();
mc_configuration *mcconf_old = mempools_alloc_mcconf();
*mcconf = *mc_interface_get_configuration();
*mcconf_old = *mcconf;
if (duty > (mcconf->l_max_duty * 0.9)) {
duty = mcconf->l_max_duty * 0.9;
}
mcconf->motor_type = MOTOR_TYPE_FOC;
mcconf->foc_sensor_mode = FOC_SENSOR_MODE_SENSORLESS;
mcconf->foc_current_kp = kp;
mcconf->foc_current_ki = ki;
mcconf->foc_cc_decoupling = FOC_CC_DECOUPLING_DISABLED;
mc_interface_set_configuration(mcconf);
// Wait maximum 5s for fault code to disappear
for (int i = 0;i < 500;i++) {
if (mc_interface_get_fault() == FAULT_CODE_NONE) {
break;
}
chThdSleepMilliseconds(10);
}
fault = mc_interface_get_fault();
if (fault != FAULT_CODE_NONE) {
mc_interface_set_configuration(mcconf_old);
mempools_free_mcconf(mcconf);
mempools_free_mcconf(mcconf_old);
return fault;
}
// Wait one second for things to get ready after
// the fault disapears.
chThdSleepMilliseconds(1000);
// Disable timeout