关于Adafruit_PWMServoDriver库的使用

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买了这种驱动板

示例代码如下：

1. #include <Wire.h>
   
2. #include <Adafruit_PWMServoDriver.h>
   
3. 
   
4. // called this way, it uses the default address 0x40
   
5. Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver();
   
6. // you can also call it with a different address you want
   
7. //Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x41);
   
8. 
   
9. // Depending on your servo make, the pulse width min and max may vary, you
   
10. // want these to be as small/large as possible without hitting the hard stop
    
11. // for max range. You'll have to tweak them as necessary to match the servos you
    
12. // have!
    
13. #define SERVOMIN  150 // this is the 'minimum' pulse length count (out of 4096)
    
14. #define SERVOMAX  600 // this is the 'maximum' pulse length count (out of 4096)
    
15. 
    
16. // our servo # counter
    
17. //uint8_t servonum = 0;
    
18. 
    
19. void setup() {
    
20.   Serial.begin(9600);
    
21.   Serial.println("16 channel Servo test!");
    
22. 
    
23.   pwm.begin();
    
24.   
    
25.   pwm.setPWMFreq(60);  // Analog servos run at ~60 Hz updates
    
26. }
    
27. 
    
28. // you can use this function if you'd like to set the pulse length in seconds
    
29. // e.g. setServoPulse(0, 0.001) is a ~1 millisecond pulse width. its not precise!
    
30. void setServoPulse(uint8_t n, double pulse) {
    
31.   double pulselength;
    
32.   
    
33.   pulselength = 1000000;   // 1,000,000 us per second
    
34.   pulselength /= 60;   // 60 Hz
    
35.   Serial.print(pulselength); Serial.println(" us per period");
    
36.   pulselength /= 4096;  // 12 bits of resolution
    
37.   Serial.print(pulselength); Serial.println(" us per bit");
    
38.   pulse *= 1000;
    
39.   pulse /= pulselength;
    
40.   Serial.println(pulse);
    
41.   pwm.setPWM(n, 0, pulse);
    
42. }
    
43. 
    
44. void loop() {
    
45.   // Drive each servo one at a time
    
46.   //Serial.println(servonum);
    
47.   for (uint16_t pulselen = SERVOMIN; pulselen < SERVOMAX; pulselen++) {
    
48.     pwm.setPWM(0, 0, pulselen);
    
49.     pwm.setPWM(1, 0, pulselen);
    
50.     pwm.setPWM(2, 0, pulselen);
    
51.     pwm.setPWM(3, 0, pulselen);
    
52.     pwm.setPWM(4, 0, pulselen);
    
53.     pwm.setPWM(5, 0, pulselen);
    
54.     pwm.setPWM(6, 0, pulselen);
    
55.     pwm.setPWM(7, 0, pulselen);
    
56.     pwm.setPWM(8, 0, pulselen);
    
57.     pwm.setPWM(9, 0, pulselen);
    
58.     pwm.setPWM(10, 0, pulselen);
    
59.     pwm.setPWM(11, 0, pulselen);
    
60.     pwm.setPWM(12, 0, pulselen);
    
61.     pwm.setPWM(13, 0, pulselen);
    
62.     pwm.setPWM(14, 0, pulselen);
    
63.   }
    
64.   delay(500);
    
65.   for (uint16_t pulselen = SERVOMAX; pulselen > SERVOMIN; pulselen--) {
    
66.     pwm.setPWM(0, 0, pulselen);
    
67.     pwm.setPWM(0, 0, pulselen);
    
68.     pwm.setPWM(1, 0, pulselen);
    
69.     pwm.setPWM(2, 0, pulselen);
    
70.     pwm.setPWM(3, 0, pulselen);
    
71.     pwm.setPWM(4, 0, pulselen);
    
72.     pwm.setPWM(5, 0, pulselen);
    
73.     pwm.setPWM(6, 0, pulselen);
    
74.     pwm.setPWM(7, 0, pulselen);
    
75.     pwm.setPWM(8, 0, pulselen);
    
76.     pwm.setPWM(9, 0, pulselen);
    
77.     pwm.setPWM(10, 0, pulselen);
    
78.     pwm.setPWM(11, 0, pulselen);
    
79.     pwm.setPWM(12, 0, pulselen);
    
80.     pwm.setPWM(13, 0, pulselen);
    
81.     pwm.setPWM(14, 0, pulselen);
    
82.   }
    
83.   delay(500);
    
84. }

复制代码

我对里面的参数不太明白，求教

我要让舵机分别转到0度，90度，180度，应该传入多少？

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找到一点资料，看不太懂，谁能解释一下！

我要让舵机分别转到0度，90度，180度，应该传入多少？

顺子

我也买了这个驱动板，但是我使用的是stm32的单片机，我一直在尝试这个地址到底是不是0x40或者0x41，我一直没有弄好。_i2caddr = addr;这个_i2caddr 到底是多少