Question
problem running BLDC motor on STEVAL-ESC002V1using 6Step_lib function.
Hello Folks,
I am facing an issue while controlling a BLDC motor using the STEVAL-ESC002V1 board. ST provides a reference firmware for this board which includes the 6Step Library for motor control. The firmware exposes functions such as:
MC_StartMotor()
MC_StopMotor()
MC_Set_Speed()
According to the documentation, these APIs should allow setting and controlling the motor speed.
I had paste the code which is written by me in main while loop. (For Reference)
ISSUE:
1. when the val(ADC value) goes above the 300, still the MC_StartMotor(), is not getting enable. Motor didn't run.
2. If I make changes into my code, delete by everything in the while loop and just try to run the motor at 10000rpm, by function MC_StartMotor() and MC_Set_Speed(10000).
As result of it as motor make a sound and vibration, not working smoothly.
hey it would be helpful to me, if someone help me to resolve this issue.
/* Includes ------------------------------------------------------------------*/
#include "main_32F0.h"
#include "6Step_Lib.h"
#include "MC_SixStep_param_7PP_3S_propeller.h"
/* Variables -----------------------------------------------------------------*/
extern SipMotorDriver_TypeDef STSPIN32F0MotorDriver;
extern TIM_HandleTypeDef IF_TIMx;
extern TIM_HandleTypeDef HF_TIMx;
extern TIM_HandleTypeDef LF_TIMx;
extern TIM_HandleTypeDef ZC_TIMx;
extern ADC_HandleTypeDef ADCx;
extern UART_HandleTypeDef huart;
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
#if defined(POTENTIOMETER)
static void MX_ADC_Init(void);
#endif
#if defined(ST_PWM_INTERFACE)
static void MX_IF_TIMx_Init(void);
#endif
static void MX_HF_TIMx_Init(void);
static void MX_LF_TIMx_Init(void);
static void MX_ZC_TIMx_Init(void);
#if defined(UART_COMM)
static void MX_UART_Init(void);
#endif
uint32_t val=0;
uint16_t adc;
uint32_t target_speed=0;
int32_t map_function(int32_t val, int32_t min_pot, int32_t max_pot, int32_t min_motor, int32_t max_motor);
uint16_t Read_ADC_PA6(void)
{
HAL_ADC_Start(&ADCx);
HAL_ADC_PollForConversion(&ADCx,20);
return HAL_ADC_GetValue(&ADCx);
}
static uint32_t speed=0;
SIXSTEP_Base_InitTypeDef SixStep_Parameter;
uint8_t motor_status=0;
void run_motor(void)
{
val= Read_ADC_PA6();
target_speed=map_function(val,0,4040,0,20000);
//target_speed= 4 * target_speed;
target_speed =target_speed /1000;
target_speed =target_speed *1000;
if(speed < target_speed)
{
speed = speed +1000;
MC_Set_Speed(speed);
}
else if(speed > target_speed)
{
speed = speed -1000;
MC_Set_Speed(speed);
}
}
int32_t map_function(int32_t val, int32_t min_pot, int32_t max_pot, int32_t min_motor, int32_t max_motor)
{
return (val - min_pot) * (max_motor - min_motor) / (max_pot - min_pot) + min_pot;
}
uint32_t rpm_val=0;
int main(void)
{
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
#if (defined(POTENTIOMETER)||defined(CURRENT_SENSE_ADC)||defined(VBUS_SENSE_ADC)||defined(TEMP_SENSE_ADC))
MX_ADC_Init();
#endif
#if defined(ST_PWM_INTERFACE)
MX_IF_TIMx_Init();
#endif
MX_LF_TIMx_Init();
MX_HF_TIMx_Init();
MX_ZC_TIMx_Init();
#if defined(UART_COMM)
MX_UART_Init();
#endif
/* ****************************************************************************
==============================================================================
###### This function initializes 6-Step lib ######
==============================================================================
**************************************************************************** */
MC_SixStep_INIT();
MC_StartMotor();
/****************************************************************************/
/* Infinite loop */
while (1)
{
/*! **************************************************************************
==============================================================================
###### How to use the 6Step FW Example project ######
==============================================================================
This workspace contains the middleware layer with Motor Control library to
drive a motor connected on STEVAL-ESC002V1 board performing a 6-step control
algorithm allowing the motor speed regulation through PWM interface or UART
commands.
The 6-step algorithm is voltage mode sensorless.
A list of APIs in 6Step_Lib.h is provided to send user command to the 6Step
library, for instance:
(#) MC_StartMotor() -> Start the motor
(#) MC_StoptMotor() -> Stop the motor
(#) MC_Set_Speed(...) -> Set the new motor speed
The MC_SixStep_param_32F0.h contains the files names of the MC parameters
files. The user can add its own parameter file using one of the existing file
as an example.
==============================================================================
###### USER SPACE ######
==============================================================================
*****************************************************************************/
//MC_Set_Speed(7000);
rpm_val=MC_GetMechSpeedRPM();
val=Read_ADC_PA6();
if(val <300)
{
MC_StopMotor();
}
else if(val>300)
{
if(speed < 5000)
{
speed = speed +1000;
MC_Set_Speed(speed);
}
HAL_Delay(800);
while(1)
{
if(rpm_val <=5000)
{
run_motor();
val= Read_ADC_PA6();
if(val <300)
{
MC_StopMotor();
break;
}
}
}
}
}
}