这是OpenMV的代码
import sensor, image, time
import json
from pyb import UART
# For color tracking to work really well you should ideally be in a very, very,
# very, controlled enviroment where the lighting is constant...
yellow_threshold = ( 46, 100, -68, 72, 58, 92)
# You may need to tweak the above settings for tracking green things...
# Select an area in the Framebuffer to copy the color settings.
sensor.reset() # Initialize the camera sensor.
sensor.set_pixformat(sensor.RGB565) # use RGB565.
sensor.set_framesize(sensor.QQVGA) # use QQVGA for speed.
sensor.skip_frames(10) # Let new settings take affect.
sensor.set_auto_whitebal(False) # turn this off.
clock = time.clock() # Tracks FPS.
uart = UART(3, 115200)
while(True):
clock.tick() # Track elapsed milliseconds between snapshots().
img = sensor.snapshot() # Take a picture and return the image.
blobs = img.find_blobs([yellow_threshold])
if blobs:
#print('sum : %d'% len(blobs))
data=[]
for b in blobs:
# Draw a rect around the blob.
img.draw_rectangle(b.rect()) # rect
img.draw_cross(b.cx(), b.cy()) # cx, cy
data.append((b.cx(),b.cy()))
#{(1,22),(-3,33),(22222,0),(9999,12),(0,0)}
data_out = json.dumps(set(data))
uart.write(data_out +'\n')
print('you send:',data_out)
else:
print("not found!")
这是Arduino的代码
#include <SoftwareSerial.h>
SoftwareSerial softSerial(10, 11); // RX, TX
typedef struct
{
int data[50][2] = {{0,0}};
int len = 0;
}List;
List list;
void setup() {
// put your setup code here, to run once:
softSerial.begin(115200);
Serial.begin(115200);
}
void loop() {
if(softSerial.available())
{
getList();
for (int i=0; i<list.len; i++)
{
Serial.print(list.data[i][0]);
Serial.print('\t');
Serial.println(list.data[i][1]);
}
Serial.println("============");
clearList();
}
}
String detectString()
{
while(softSerial.read() != '{');
return(softSerial.readStringUntil('}'));
}
void clearList()
{
memset(list.data, sizeof(list.data),0);
list.len = 0;
}
void getList()
{
String s = detectString();
String numStr = "";
for(int i = 0; i<s.length(); i++)
{
if(s[i]=='('){
numStr = "";
}
else if(s[i] == ','){
list.data[list.len][0] = numStr.toInt();
numStr = "";
}
else if(s[i]==')'){
list.data[list.len][1] = numStr.toInt();
numStr = "";
list.len++;
}
else{
numStr += s[i];
}
}
}
这是输出的截图
为什么Arduino串口监控器里的信息有的会出现0呢？
