Stepper Motor Control with STSPIN820 Evaluation Board

1[code]
2
3/*
4BIPOLAR STEPPER MOTOR CONTROL WITH EVALUATION BOARD  OF THE STSPIN820 BY STMicroelectronicss
5Versione 1.0 del 07/03/2018
6AUTORE:  microst
7*/
8
9// set pin numbers:
10const int EN = 23;     
11const int  M0 = 25;      
12const int M1 = 27;
13const int M2 = 29;
14const int STDBY =  33;
15const int STEP = 35;
16const int DIR = 37;
17
18
19// variables will  change:
20
21int number = 0;        
22int freq = 10;
23int swpulse = 0;
24int  lettura = 0;
25int dur = 0.1;
26int mode = 0;
27int m0 = 0;
28int m1 = 0;
29int  m2 = 0;
30int dir= 0;
31unsigned long tempMillis;  di PWM
32byte caratteri; 
33byte  tempChar; 
34
35
36void setup() {
37  // pin definitions
38  Serial.begin(9600);
39  pinMode(STDBY, OUTPUT);
40  pinMode(M0, OUTPUT );
41  pinMode(M1, OUTPUT );
42  pinMode(M2, OUTPUT);
43  pinMode(DIR, OUTPUT);
44  pinMode(STEP, OUTPUT);
45  digitalWrite(STDBY, LOW); //device in stand-by
46  pinMode(EN, OUTPUT); digitalWrite(EN,  LOW); // output stage disabled
47  digitalWrite(M0, HIGH);digitalWrite(M1, LOW);digitalWrite(M2,  LOW); //initial mode configuration 
48  delay (1000);
49  // Serial monitor menu
50  Serial.println(F(" m = mode")); 
51  Serial.println(F(" r = dir anti clockwise  "));
52  Serial.println(F(" l = dir clockwise"));
53  Serial.println(F(" e  = driver on "));
54  Serial.println(F(" o = driver in stand by"));
55  Serial.println(F("  s = step"));
56  Serial.println(F(" f = frequency or speed"));
57  //
58}
59
60void  loop() {
61 //check serial
62  if (Serial.available()) {
63    byte command =  Serial.read(); //leggo il primo byte
64    switch (command) { //controllo che sia  un comando valido
65  
66  // enable the device ( out of stand by )
67    case  'e': 
68          Serial.println(" driver on ");
69          digitalWrite(STDBY,  HIGH);
70          delay(1);
71    break;
72  // disable the device - stand by
73    case 'o': 
74          Serial.println(" driver in stand-by");
75          digitalWrite(STDBY,  LOW);
76    break;
77  // define the cw motor direction
78    case 'l': 
79          Serial.println(" direction clock wise");
80          dir=1;
81    break;
82  // define the ccw motor direction 
83    case 'r': 
84          Serial.println("  direction counter clock wise");
85          dir=0;
86    break;
87    case 's':  //step number
88           readnumb();
89           swpulse=lettura;
90           Serial.println(F("step  number  is  "));
91           Serial.println(swpulse, DEC);
92           Serial.println(F("  motor actived  "));
93           stepper(swpulse,m0,m1,m2,dir,dur);
94           Serial.println(F("motor  stopped  "));
95    break;
96    case 'f': // speed number
97           readnumb();
98           freq=lettura;
99           dur= freq/2;
100           Serial.print(F("speed  is  "));
101           Serial.println(freq, DEC);
102    break;
103    case 'm':  //mode selection 
104           readnumb();
105           mode=lettura;
106           if(mode>6){mode=6;}
107           m0=0;m1=0;m2=0;
108           if ( mode==0 ) { Serial.println(F("mode  1/1 step selected"));}
109           if ( mode==1 ) { Serial.println(F("mode 1/2  step selected"));m0=1;};
110           if ( mode==2 ) { Serial.println(F("mode  1/4 step selected"));m1=1;}
111           if ( mode==3 ) { Serial.println(F("mode  1/8 step selected"));m0=1;m1=1;}
112           if ( mode==4 ) { Serial.println(F("mode  1/16 step selected"));m2=1;}
113           if ( mode==5 ) { Serial.println(F("mode  1/128 step selected"));m2=1;m1=1;}
114           if ( mode==6 ) { Serial.println(F("mode  1/256 step selected"));m2=1;m1=1;m0=1;}
115    break;
116    }
117    }
118}
119
120
121
122//  function stepper for EVALSP820-XS
123int stepper (int swpulse, int m0, int m1, int  m2, int dir, int dur){
124  if (m0==0) {digitalWrite(M0, LOW);} else {digitalWrite(M0,  HIGH);}
125  if (m1==0) {digitalWrite(M1, LOW);} else {digitalWrite(M1, HIGH);}
126  if (m2==0) {digitalWrite(M2, LOW);} else {digitalWrite(M2, HIGH);}
127  if (dir==0)  {digitalWrite(DIR, LOW);} else {digitalWrite(DIR, HIGH);}
128  pinMode(EN, INPUT_PULLUP);  // output stage  on
129  delay(10);
130  if (digitalRead(EN)==LOW)  {Serial.println(F("  VM UVLO condition: check the VM power supply ")); }
131  while (digitalRead(EN)==LOW)  {;}
132  // STEP GENERATOR
133  for ( int i = 0; i < swpulse; i++) {
134    digitalWrite(STEP,  HIGH);
135    delay(dur);
136    digitalWrite(STEP, LOW); 
137    delay(dur);   
138  if (digitalRead(EN)==LOW)  {Serial.println(F("fault  ")); i=swpulse; }
139  }
140  pinMode(EN, OUTPUT);  
141  digitalWrite(EN, LOW); // output stage off
142  return;
143}
144  
145  int readnumb (){
146  lettura = 0; tempMillis = millis(); caratteri = 0;
147  do {
148      if (Serial.available()) {
149               tempChar = Serial.read();
150               caratteri++;
151               if ((tempChar >= 48) && (tempChar  <= 57)) { //è un numero? ok
152                   lettura = (lettura * 10) + (tempChar  - 48);
153                   } else if ((tempChar == 10) || (tempChar == 13)) {
154                   //con invio e/o nuova linea esco
155                   break;
156                   }
157                }
158     } while ((millis() - tempMillis  < 500) && (lettura <= 100) && (caratteri < 10));
159          //se il valore di  PWM è valido, lo imposto sul pin
160          if (lettura >= 500) {lettura=500;}
161  return (lettura);
162}
163
164
165[/code]

[code]

/*
BIPOLAR STEPPER MOTOR CONTROL WITH EVALUATION BOARD  OF THE STSPIN820 BY STMicroelectronicss
Versione 1.0 del 07/03/2018
AUTORE:  microst
*/

// set pin numbers:
const int EN = 23;     
const int  M0 = 25;      
const int M1 = 27;
const int M2 = 29;
const int STDBY =  33;
const int STEP = 35;
const int DIR = 37;


// variables will  change:

int number = 0;        
int freq = 10;
int swpulse = 0;
int  lettura = 0;
int dur = 0.1;
int mode = 0;
int m0 = 0;
int m1 = 0;
int  m2 = 0;
int dir= 0;
unsigned long tempMillis;  di PWM
byte caratteri; 
byte  tempChar; 


void setup() {
  // pin definitions
  Serial.begin(9600);
  pinMode(STDBY, OUTPUT);
  pinMode(M0, OUTPUT );
  pinMode(M1, OUTPUT );
  pinMode(M2, OUTPUT);
  pinMode(DIR, OUTPUT);
  pinMode(STEP, OUTPUT);
  digitalWrite(STDBY, LOW); //device in stand-by
  pinMode(EN, OUTPUT); digitalWrite(EN,  LOW); // output stage disabled
  digitalWrite(M0, HIGH);digitalWrite(M1, LOW);digitalWrite(M2,  LOW); //initial mode configuration 
  delay (1000);
  // Serial monitor menu
  Serial.println(F(" m = mode")); 
  Serial.println(F(" r = dir anti clockwise  "));
  Serial.println(F(" l = dir clockwise"));
  Serial.println(F(" e  = driver on "));
  Serial.println(F(" o = driver in stand by"));
  Serial.println(F("  s = step"));
  Serial.println(F(" f = frequency or speed"));
  //
}

void  loop() {
 //check serial
  if (Serial.available()) {
    byte command =  Serial.read(); //leggo il primo byte
    switch (command) { //controllo che sia  un comando valido
  
  // enable the device ( out of stand by )
    case  'e': 
          Serial.println(" driver on ");
          digitalWrite(STDBY,  HIGH);
          delay(1);
    break;
  // disable the device - stand by
    case 'o': 
          Serial.println(" driver in stand-by");
          digitalWrite(STDBY,  LOW);
    break;
  // define the cw motor direction
    case 'l': 
          Serial.println(" direction clock wise");
          dir=1;
    break;
  // define the ccw motor direction 
    case 'r': 
          Serial.println("  direction counter clock wise");
          dir=0;
    break;
    case 's':  //step number
           readnumb();
           swpulse=lettura;
           Serial.println(F("step  number  is  "));
           Serial.println(swpulse, DEC);
           Serial.println(F("  motor actived  "));
           stepper(swpulse,m0,m1,m2,dir,dur);
           Serial.println(F("motor  stopped  "));
    break;
    case 'f': // speed number
           readnumb();
           freq=lettura;
           dur= freq/2;
           Serial.print(F("speed  is  "));
           Serial.println(freq, DEC);
    break;
    case 'm':  //mode selection 
           readnumb();
           mode=lettura;
           if(mode>6){mode=6;}
           m0=0;m1=0;m2=0;
           if ( mode==0 ) { Serial.println(F("mode  1/1 step selected"));}
           if ( mode==1 ) { Serial.println(F("mode 1/2  step selected"));m0=1;};
           if ( mode==2 ) { Serial.println(F("mode  1/4 step selected"));m1=1;}
           if ( mode==3 ) { Serial.println(F("mode  1/8 step selected"));m0=1;m1=1;}
           if ( mode==4 ) { Serial.println(F("mode  1/16 step selected"));m2=1;}
           if ( mode==5 ) { Serial.println(F("mode  1/128 step selected"));m2=1;m1=1;}
           if ( mode==6 ) { Serial.println(F("mode  1/256 step selected"));m2=1;m1=1;m0=1;}
    break;
    }
    }
}



//  function stepper for EVALSP820-XS
int stepper (int swpulse, int m0, int m1, int  m2, int dir, int dur){
  if (m0==0) {digitalWrite(M0, LOW);} else {digitalWrite(M0,  HIGH);}
  if (m1==0) {digitalWrite(M1, LOW);} else {digitalWrite(M1, HIGH);}
  if (m2==0) {digitalWrite(M2, LOW);} else {digitalWrite(M2, HIGH);}
  if (dir==0)  {digitalWrite(DIR, LOW);} else {digitalWrite(DIR, HIGH);}
  pinMode(EN, INPUT_PULLUP);  // output stage  on
  delay(10);
  if (digitalRead(EN)==LOW)  {Serial.println(F("  VM UVLO condition: check the VM power supply ")); }
  while (digitalRead(EN)==LOW)  {;}
  // STEP GENERATOR
  for ( int i = 0; i < swpulse; i++) {
    digitalWrite(STEP,  HIGH);
    delay(dur);
    digitalWrite(STEP, LOW); 
    delay(dur);   
  if (digitalRead(EN)==LOW)  {Serial.println(F("fault  ")); i=swpulse; }
  }
  pinMode(EN, OUTPUT);  
  digitalWrite(EN, LOW); // output stage off
  return;
}
  
  int readnumb (){
  lettura = 0; tempMillis = millis(); caratteri = 0;
  do {
      if (Serial.available()) {
               tempChar = Serial.read();
               caratteri++;
               if ((tempChar >= 48) && (tempChar  <= 57)) { //è un numero? ok
                   lettura = (lettura * 10) + (tempChar  - 48);
                   } else if ((tempChar == 10) || (tempChar == 13)) {
                   //con invio e/o nuova linea esco
                   break;
                   }
                }
     } while ((millis() - tempMillis  < 500) && (lettura <= 100) && (caratteri < 10));
          //se il valore di  PWM è valido, lo imposto sul pin
          if (lettura >= 500) {lettura=500;}
  return (lettura);
}


[/code]

STEPPER MOTOR CONTROL WITH STSPIN820 EVAL BOARD

arduino

1[code]
2
3/*
4BIPOLAR STEPPER MOTOR CONTROL WITH EVALUATION BOARD
5  OF THE STSPIN820 BY STMicroelectronicss
6Versione 1.0 del 07/03/2018
7AUTORE:
8  microst
9*/
10
11// set pin numbers:
12const int EN = 23;     
13const int
14  M0 = 25;      
15const int M1 = 27;
16const int M2 = 29;
17const int STDBY =
18  33;
19const int STEP = 35;
20const int DIR = 37;
21
22
23// variables will
24  change:
25
26int number = 0;        
27int freq = 10;
28int swpulse = 0;
29int
30  lettura = 0;
31int dur = 0.1;
32int mode = 0;
33int m0 = 0;
34int m1 = 0;
35int
36  m2 = 0;
37int dir= 0;
38unsigned long tempMillis;  di PWM
39byte caratteri; 
40byte
41  tempChar; 
42
43
44void setup() {
45  // pin definitions
46  Serial.begin(9600);
47
48  pinMode(STDBY, OUTPUT);
49  pinMode(M0, OUTPUT );
50  pinMode(M1, OUTPUT );
51
52  pinMode(M2, OUTPUT);
53  pinMode(DIR, OUTPUT);
54  pinMode(STEP, OUTPUT);
55
56  digitalWrite(STDBY, LOW); //device in stand-by
57  pinMode(EN, OUTPUT); digitalWrite(EN,
58  LOW); // output stage disabled
59  digitalWrite(M0, HIGH);digitalWrite(M1, LOW);digitalWrite(M2,
60  LOW); //initial mode configuration 
61  delay (1000);
62  // Serial monitor menu
63
64  Serial.println(F(" m = mode")); 
65  Serial.println(F(" r = dir anti clockwise
66  "));
67  Serial.println(F(" l = dir clockwise"));
68  Serial.println(F(" e
69  = driver on "));
70  Serial.println(F(" o = driver in stand by"));
71  Serial.println(F("
72  s = step"));
73  Serial.println(F(" f = frequency or speed"));
74  //
75}
76
77void
78  loop() {
79 //check serial
80  if (Serial.available()) {
81    byte command =
82  Serial.read(); //leggo il primo byte
83    switch (command) { //controllo che sia
84  un comando valido
85  
86  // enable the device ( out of stand by )
87    case
88  'e': 
89          Serial.println(" driver on ");
90          digitalWrite(STDBY,
91  HIGH);
92          delay(1);
93    break;
94  // disable the device - stand by
95
96    case 'o': 
97          Serial.println(" driver in stand-by");
98          digitalWrite(STDBY,
99  LOW);
100    break;
101  // define the cw motor direction
102    case 'l': 
103
104          Serial.println(" direction clock wise");
105          dir=1;
106    break;
107
108  // define the ccw motor direction 
109    case 'r': 
110          Serial.println("
111  direction counter clock wise");
112          dir=0;
113    break;
114    case 's':
115  //step number
116           readnumb();
117           swpulse=lettura;
118           Serial.println(F("step
119  number  is  "));
120           Serial.println(swpulse, DEC);
121           Serial.println(F("
122  motor actived  "));
123           stepper(swpulse,m0,m1,m2,dir,dur);
124           Serial.println(F("motor
125  stopped  "));
126    break;
127    case 'f': // speed number
128           readnumb();
129
130           freq=lettura;
131           dur= freq/2;
132           Serial.print(F("speed
133  is  "));
134           Serial.println(freq, DEC);
135    break;
136    case 'm':
137  //mode selection 
138           readnumb();
139           mode=lettura;
140           if(mode>6){mode=6;}
141
142           m0=0;m1=0;m2=0;
143           if ( mode==0 ) { Serial.println(F("mode
144  1/1 step selected"));}
145           if ( mode==1 ) { Serial.println(F("mode 1/2
146  step selected"));m0=1;};
147           if ( mode==2 ) { Serial.println(F("mode
148  1/4 step selected"));m1=1;}
149           if ( mode==3 ) { Serial.println(F("mode
150  1/8 step selected"));m0=1;m1=1;}
151           if ( mode==4 ) { Serial.println(F("mode
152  1/16 step selected"));m2=1;}
153           if ( mode==5 ) { Serial.println(F("mode
154  1/128 step selected"));m2=1;m1=1;}
155           if ( mode==6 ) { Serial.println(F("mode
156  1/256 step selected"));m2=1;m1=1;m0=1;}
157    break;
158    }
159    }
160}
161
162
163
164//
165  function stepper for EVALSP820-XS
166int stepper (int swpulse, int m0, int m1, int
167  m2, int dir, int dur){
168  if (m0==0) {digitalWrite(M0, LOW);} else {digitalWrite(M0,
169  HIGH);}
170  if (m1==0) {digitalWrite(M1, LOW);} else {digitalWrite(M1, HIGH);}
171
172  if (m2==0) {digitalWrite(M2, LOW);} else {digitalWrite(M2, HIGH);}
173  if (dir==0)
174  {digitalWrite(DIR, LOW);} else {digitalWrite(DIR, HIGH);}
175  pinMode(EN, INPUT_PULLUP);
176  // output stage  on
177  delay(10);
178  if (digitalRead(EN)==LOW)  {Serial.println(F("
179  VM UVLO condition: check the VM power supply ")); }
180  while (digitalRead(EN)==LOW)
181  {;}
182  // STEP GENERATOR
183  for ( int i = 0; i < swpulse; i++) {
184    digitalWrite(STEP,
185  HIGH);
186    delay(dur);
187    digitalWrite(STEP, LOW); 
188    delay(dur);   
189
190  if (digitalRead(EN)==LOW)  {Serial.println(F("fault  ")); i=swpulse; }
191  }
192
193  pinMode(EN, OUTPUT);  
194  digitalWrite(EN, LOW); // output stage off
195  return;
196}
197
198  
199  int readnumb (){
200  lettura = 0; tempMillis = millis(); caratteri = 0;
201
202  do {
203      if (Serial.available()) {
204               tempChar = Serial.read();
205
206               caratteri++;
207               if ((tempChar >= 48) && (tempChar
208  <= 57)) { //è un numero? ok
209                   lettura = (lettura * 10) + (tempChar
210  - 48);
211                   } else if ((tempChar == 10) || (tempChar == 13)) {
212
213                   //con invio e/o nuova linea esco
214                   break;
215
216                   }
217                }
218     } while ((millis() - tempMillis
219  < 500) && (lettura <= 100) && (caratteri < 10));
220          //se il valore di
221  PWM è valido, lo imposto sul pin
222          if (lettura >= 500) {lettura=500;}
223
224  return (lettura);
225}
226
227
228[/code]

[code]

/*
BIPOLAR STEPPER MOTOR CONTROL WITH EVALUATION BOARD
  OF THE STSPIN820 BY STMicroelectronicss
Versione 1.0 del 07/03/2018
AUTORE:
  microst
*/

// set pin numbers:
const int EN = 23;     
const int
  M0 = 25;      
const int M1 = 27;
const int M2 = 29;
const int STDBY =
  33;
const int STEP = 35;
const int DIR = 37;


// variables will
  change:

int number = 0;        
int freq = 10;
int swpulse = 0;
int
  lettura = 0;
int dur = 0.1;
int mode = 0;
int m0 = 0;
int m1 = 0;
int
  m2 = 0;
int dir= 0;
unsigned long tempMillis;  di PWM
byte caratteri; 
byte
  tempChar; 


void setup() {
  // pin definitions
  Serial.begin(9600);

  pinMode(STDBY, OUTPUT);
  pinMode(M0, OUTPUT );
  pinMode(M1, OUTPUT );

  pinMode(M2, OUTPUT);
  pinMode(DIR, OUTPUT);
  pinMode(STEP, OUTPUT);

  digitalWrite(STDBY, LOW); //device in stand-by
  pinMode(EN, OUTPUT); digitalWrite(EN,
  LOW); // output stage disabled
  digitalWrite(M0, HIGH);digitalWrite(M1, LOW);digitalWrite(M2,
  LOW); //initial mode configuration 
  delay (1000);
  // Serial monitor menu

  Serial.println(F(" m = mode")); 
  Serial.println(F(" r = dir anti clockwise
  "));
  Serial.println(F(" l = dir clockwise"));
  Serial.println(F(" e
  = driver on "));
  Serial.println(F(" o = driver in stand by"));
  Serial.println(F("
  s = step"));
  Serial.println(F(" f = frequency or speed"));
  //
}

void
  loop() {
 //check serial
  if (Serial.available()) {
    byte command =
  Serial.read(); //leggo il primo byte
    switch (command) { //controllo che sia
  un comando valido
  
  // enable the device ( out of stand by )
    case
  'e': 
          Serial.println(" driver on ");
          digitalWrite(STDBY,
  HIGH);
          delay(1);
    break;
  // disable the device - stand by

    case 'o': 
          Serial.println(" driver in stand-by");
          digitalWrite(STDBY,
  LOW);
    break;
  // define the cw motor direction
    case 'l': 

          Serial.println(" direction clock wise");
          dir=1;
    break;

  // define the ccw motor direction 
    case 'r': 
          Serial.println("
  direction counter clock wise");
          dir=0;
    break;
    case 's':
  //step number
           readnumb();
           swpulse=lettura;
           Serial.println(F("step
  number  is  "));
           Serial.println(swpulse, DEC);
           Serial.println(F("
  motor actived  "));
           stepper(swpulse,m0,m1,m2,dir,dur);
           Serial.println(F("motor
  stopped  "));
    break;
    case 'f': // speed number
           readnumb();

           freq=lettura;
           dur= freq/2;
           Serial.print(F("speed
  is  "));
           Serial.println(freq, DEC);
    break;
    case 'm':
  //mode selection 
           readnumb();
           mode=lettura;
           if(mode>6){mode=6;}

           m0=0;m1=0;m2=0;
           if ( mode==0 ) { Serial.println(F("mode
  1/1 step selected"));}
           if ( mode==1 ) { Serial.println(F("mode 1/2
  step selected"));m0=1;};
           if ( mode==2 ) { Serial.println(F("mode
  1/4 step selected"));m1=1;}
           if ( mode==3 ) { Serial.println(F("mode
  1/8 step selected"));m0=1;m1=1;}
           if ( mode==4 ) { Serial.println(F("mode
  1/16 step selected"));m2=1;}
           if ( mode==5 ) { Serial.println(F("mode
  1/128 step selected"));m2=1;m1=1;}
           if ( mode==6 ) { Serial.println(F("mode
  1/256 step selected"));m2=1;m1=1;m0=1;}
    break;
    }
    }
}



//
  function stepper for EVALSP820-XS
int stepper (int swpulse, int m0, int m1, int
  m2, int dir, int dur){
  if (m0==0) {digitalWrite(M0, LOW);} else {digitalWrite(M0,
  HIGH);}
  if (m1==0) {digitalWrite(M1, LOW);} else {digitalWrite(M1, HIGH);}

  if (m2==0) {digitalWrite(M2, LOW);} else {digitalWrite(M2, HIGH);}
  if (dir==0)
  {digitalWrite(DIR, LOW);} else {digitalWrite(DIR, HIGH);}
  pinMode(EN, INPUT_PULLUP);
  // output stage  on
  delay(10);
  if (digitalRead(EN)==LOW)  {Serial.println(F("
  VM UVLO condition: check the VM power supply ")); }
  while (digitalRead(EN)==LOW)
  {;}
  // STEP GENERATOR
  for ( int i = 0; i < swpulse; i++) {
    digitalWrite(STEP,
  HIGH);
    delay(dur);
    digitalWrite(STEP, LOW); 
    delay(dur);   

  if (digitalRead(EN)==LOW)  {Serial.println(F("fault  ")); i=swpulse; }
  }

  pinMode(EN, OUTPUT);  
  digitalWrite(EN, LOW); // output stage off
  return;
}

  
  int readnumb (){
  lettura = 0; tempMillis = millis(); caratteri = 0;

  do {
      if (Serial.available()) {
               tempChar = Serial.read();

               caratteri++;
               if ((tempChar >= 48) && (tempChar
  <= 57)) { //è un numero? ok
                   lettura = (lettura * 10) + (tempChar
  - 48);
                   } else if ((tempChar == 10) || (tempChar == 13)) {

                   //con invio e/o nuova linea esco
                   break;

                   }
                }
     } while ((millis() - tempMillis
  < 500) && (lettura <= 100) && (caratteri < 10));
          //se il valore di
  PWM è valido, lo imposto sul pin
          if (lettura >= 500) {lettura=500;}

  return (lettura);
}


[/code]

Downloadable files

STSPIN820 Evalution board with arduino mega 2560

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