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a4988 sample board for m5atom
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#include <M5Atom.h> | |
#define DIR_PIN 23 | |
#define STP_PIN 19 | |
#define ENL_PIN 22 | |
#define VOL_PIN 25 | |
#define DSW_PIN 21 | |
#define VOL_MAX (4095.0) | |
/** | |
STP_MIN~STP_MAXの間で可変になる。 | |
## A4988 + nema17 | |
400: 早い。ギリギリ回る | |
500: 速い。安定して回る限界 | |
1000: ふつう | |
2000-10000: ゆっくり回るがとても振動する | |
*/ | |
//#define STP_MIN (400) | |
//#define STP_MAX (2000) | |
/** | |
## TMC2100 + nema17 | |
10: 脱調 | |
25: 速い。ギリギリ回る | |
30: 速い。安定して回る限界 | |
100: はやい。 | |
500: ゆっくり | |
1000: すごくゆっくり | |
49000: すごいゆっくり | |
50000: 逆に速くなる | |
*/ | |
#define STP_MIN (30) | |
#define STP_MAX (1000) | |
bool isRuning = false; | |
void setup() { | |
M5.begin(true, false, true); | |
pinMode(DIR_PIN, OUTPUT); | |
pinMode(STP_PIN, OUTPUT); | |
pinMode(ENL_PIN, OUTPUT); | |
pinMode(VOL_PIN, INPUT); | |
pinMode(DSW_PIN, INPUT_PULLUP); | |
delay(50); | |
M5.dis.clear(); | |
} | |
void loop() { | |
if (M5.Btn.wasReleasefor(100)) { // M5ATOMのボタン長押しで回転スタート | |
isRuning = !isRuning; | |
} | |
if (!isRuning) { | |
digitalWrite(ENL_PIN, HIGH); | |
delay(100); | |
} else { | |
// 速度 | |
int vol = analogRead(VOL_PIN); | |
int d = (STP_MAX - STP_MIN) * (vol / VOL_MAX); | |
d = d + STP_MIN; | |
// 回転方向 | |
int dir = digitalRead(DSW_PIN); | |
digitalWrite(ENL_PIN, LOW); | |
digitalWrite(DIR_PIN, dir == LOW ? HIGH : LOW); | |
Serial.printf("vol: %d, dir: %d\n", vol, dir); | |
for(int i=0; i<100; i++) { | |
digitalWrite(STP_PIN, HIGH); | |
delayMicroseconds(d); | |
digitalWrite(STP_PIN, LOW); | |
delayMicroseconds(d); | |
} | |
} | |
M5.update(); | |
} |
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