我想让ESP32在ESP用超声波传感器检测到物体时向树莓发出信号。收到信号后,树莓拍了一张照片。在
我的问题是,我试图使用LED“信号”的信号代码,但它不起作用。当Raspberry和ESP将此问题连接到镜像中时,它始终显示:
mmal: mmal_vc_port_enable: failed to enable port vc.null_sink:in:0(OPQV): ENOSPC
mmal: mmal_port_enable: failed to enable connected port (vc.null_sink:in:0(OPQV))0x1d08dc0 (ENOSPC)
mmal: mmal_connection_enable: output port couldn't be enabled
Traceback (most recent call last):
File "camera.py", line 18, in <module>
cam = PiCamera()
File "/usr/lib/python2.7/dist-packages/picamera/camera.py", line 433, in __init__
self._init_preview()
File "/usr/lib/python2.7/dist-packages/picamera/camera.py", line 513, in _init_preview
self, self._camera.outputs[self.CAMERA_PREVIEW_PORT])
File "/usr/lib/python2.7/dist-packages/picamera/renderers.py", line 558, in __init__
self.renderer.inputs[0].connect(source).enable()
File "/usr/lib/python2.7/dist-packages/picamera/mmalobj.py", line 2212, in enable
prefix="Failed to enable connection")
File "/usr/lib/python2.7/dist-packages/picamera/exc.py", line 184, in mmal_check
raise PiCameraMMALError(status, prefix)
picamera.exc.PiCameraMMALError: Failed to enable connection: Out of resources
------------------
(program exited with code: 1)
Press return to continue
我已经尝试过使用app.run(host = '0.0.0.0')
修复id,但它显示了相同的问题。在
下面是我的Python代码:
^{pr2}$这是我的代码:
// defines pins numbers
#define trigPin 12
#define echoPin 13
#define ledPin 14
// defines variables
long duration;
int distance;
boolean triggered = false;
double activateDistance = 10;
void setup() {
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
pinMode(ledPin, OUTPUT);
Serial.begin(9600); // Starts the serial communication
}
void loop()
{
// Clears the trigPin
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
// Sets the trigPin on HIGH state for 10 micro seconds
digitalWrite(trigPin, LOW);
delayMicroseconds(5);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
// Reads the echoPin, returns the sound wave travel time in microseconds
duration = pulseIn(echoPin, HIGH);
// Calculating the distance
distance = duration * 0.034 / 2;
// Prints the distance on the Serial Monitor
if (distance <= activateDistance)
{
digitalWrite(ledPin, HIGH);
Serial.print("GOT");
delay(1000);
digitalWrite(ledPin,LOW);
}else{
digitalWrite(ledPin,LOW);
}
}
目前它只会点亮一个LED灯,我想(我的一个朋友也是)用同样的代码给树莓发送信号是可能的。在
如果社区里的人能帮上忙的话。如果有什么问题,尽管纠正我。在
尽量减少故障原因。在
从我看到的错误来看,问题是
PiCamera
模块无法正常工作,因此我认为最好测试您的pi,看看它是否能与来自here的测试代码源一起正常工作:如果它不起作用,那么你只能专注于真正的问题。在
{e>再次检查循环中是否存在问题
^{pr2}$相关问题 更多 >
编程相关推荐