请在这里粘贴代码
```# Blob Detection and uart transport
import sensor, image, time
from pyb import UART
import json
# For color tracking to work really well you should ideally be in a very, very,
# very, controlled enviroment where the lighting is constant...
red_threshold=(18, 69, 40, 86, 0, 72)
# 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, 19200)
def find_max(blobs):
    max_size=0
    for blob in blobs:
        if blob.pixels() > max_size:
            max_blob=blob
            max_size = blob.pixels()
    return max_blob

while(True):
    img = sensor.snapshot() # Take a picture and return the image.

    blobs = img.find_blobs([red_threshold])
    if blobs:
        max_blob=find_max(blobs)
        #print('sum :', len(blobs))
        img.draw_rectangle(max_blob.rect())
        img.draw_cross(max_blob.cx(), max_blob.cy())

        output_str="%d%d" % (max_blob.cx(),max_blob.cy()) #方式1
        #output_str=json.dumps([max_blob.cx(),max_blob.cy()]) #方式2
        print('',output_str)
        uart.write(output_str+'\r\n')

单片机程序
#include "stm32f10x.h"
#include "./led/bsp_led.h"
#include "./uart/bsp_uart.h"


void delay(uint32_t count)
{
	for(; count!=0; count--);
}

int main(void)
{
	uint8_t temp;
	
	LED_GPIO_Config();
	
	DEBUG_UART_Config();
	
	
	while(1)
  {
		temp = getchar();
		printf("%d%d\n",temp);
		
		
		
			if (temp=(75,73))
			{LED1_ON;
			  LED2_OFF;}
			else if (temp=(75,46))
			{LED2_ON;
			  LED1_OFF;}
			else;
				{LED2_OFF
			  LED1_OFF;}
			
	
   }
串口助手接收数据如下：[16:46:56.953]收←◆541073821696
511073821696

[16:46:56.988]收←◆541073821696
501073821696

[16:46:57.024]收←◆541073821696
501073821696

[16:46:57.059]收←◆541073821696
501073821696

[16:46:57.094]收←◆541073821696
501073821696

[16:46:57.129]收←◆541073821696
501073821696

[16:46:57.164]收←◆541073821696
501073821696

[16:46:57.200]收←◆541073821696
501073821696

[16:46:57.235]收←◆541073821696
501073821696

[16:46:57.271]收←◆541073821696
501073821696
openmv发送数据如下：
6248
 6248
 6249
 6249
 6249
 6249
 6250
 6250
 6250


数据格式不统一，不知道如何解决