关于Adafruit_PWMServoDriver库的使用
买了这种驱动板http://duinopeak.cn/wiki/images/thumb/f/fd/01aa.jpg/500px-01aa.jpg
示例代码如下：
#include <Wire.h>
#include <Adafruit_PWMServoDriver.h>
// called this way, it uses the default address 0x40
Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver();
// you can also call it with a different address you want
//Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x41);
// Depending on your servo make, the pulse width min and max may vary, you
// want these to be as small/large as possible without hitting the hard stop
// for max range. You'll have to tweak them as necessary to match the servos you
// have!
#define SERVOMIN150 // this is the 'minimum' pulse length count (out of 4096)
#define SERVOMAX600 // this is the 'maximum' pulse length count (out of 4096)
// our servo # counter
//uint8_t servonum = 0;
void setup() {
Serial.begin(9600);
Serial.println("16 channel Servo test!");
pwm.begin();
pwm.setPWMFreq(60);// Analog servos run at ~60 Hz updates
}
// you can use this function if you'd like to set the pulse length in seconds
// e.g. setServoPulse(0, 0.001) is a ~1 millisecond pulse width. its not precise!
void setServoPulse(uint8_t n, double pulse) {
double pulselength;
pulselength = 1000000; // 1,000,000 us per second
pulselength /= 60; // 60 Hz
Serial.print(pulselength); Serial.println(" us per period");
pulselength /= 4096;// 12 bits of resolution
Serial.print(pulselength); Serial.println(" us per bit");
pulse *= 1000;
pulse /= pulselength;
Serial.println(pulse);
pwm.setPWM(n, 0, pulse);
}
void loop() {
// Drive each servo one at a time
//Serial.println(servonum);
for (uint16_t pulselen = SERVOMIN; pulselen < SERVOMAX; pulselen++) {
pwm.setPWM(0, 0, pulselen);
pwm.setPWM(1, 0, pulselen);
pwm.setPWM(2, 0, pulselen);
pwm.setPWM(3, 0, pulselen);
pwm.setPWM(4, 0, pulselen);
pwm.setPWM(5, 0, pulselen);
pwm.setPWM(6, 0, pulselen);
pwm.setPWM(7, 0, pulselen);
pwm.setPWM(8, 0, pulselen);
pwm.setPWM(9, 0, pulselen);
pwm.setPWM(10, 0, pulselen);
pwm.setPWM(11, 0, pulselen);
pwm.setPWM(12, 0, pulselen);
pwm.setPWM(13, 0, pulselen);
pwm.setPWM(14, 0, pulselen);
}
delay(500);
for (uint16_t pulselen = SERVOMAX; pulselen > SERVOMIN; pulselen--) {
pwm.setPWM(0, 0, pulselen);
pwm.setPWM(0, 0, pulselen);
pwm.setPWM(1, 0, pulselen);
pwm.setPWM(2, 0, pulselen);
pwm.setPWM(3, 0, pulselen);
pwm.setPWM(4, 0, pulselen);
pwm.setPWM(5, 0, pulselen);
pwm.setPWM(6, 0, pulselen);
pwm.setPWM(7, 0, pulselen);
pwm.setPWM(8, 0, pulselen);
pwm.setPWM(9, 0, pulselen);
pwm.setPWM(10, 0, pulselen);
pwm.setPWM(11, 0, pulselen);
pwm.setPWM(12, 0, pulselen);
pwm.setPWM(13, 0, pulselen);
pwm.setPWM(14, 0, pulselen);
}
delay(500);
}
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？
本帖最后由 绿林网页 于 2015-10-9 23:08 编辑
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？ 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
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