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MAIX BIT K210与单片机通过串口通信

问题：在使用K210时使用官方介绍的串口通信，发送的数据为八位的数据，但是在使用中需要十六位的，因为所需数据可能涉及到百位。

解决方法：将数据打包后发送。

一下为打包函数：

def sending_data(cx,cy,ch):
    global uart;
    #frame=[0x2C,18,cx%0xff,int(cx/0xff),cy%0xff,int(cy/0xff),0x5B];
    #data = bytearray(frame)
    data = ustruct.pack("<bbhhhb",              #格式为俩个字符俩个短整型(2字节)
                   0x2C,                       #帧头1
                   0x12,                       #帧头2
                   int(cx), # up sample by 4    #数据1
                   int(cy), # up sample by 4    #数据2
                   int(ch),
                   0x5B)
    uart = UART(UART.UART1, 115200, 8, 1, 0, timeout=1000, read_buf_len=4096)
    uart.write(data);   #必须要传入一个字节数组

MAIX BIT K210端完整代码

# object detector boot.py
# generated by maixhub.com

import sensor, image, lcd, time
import KPU as kpu
import gc, sys

import ustruct

#LED
from fpioa_manager import fm
from Maix import GPIO
io_led_red = 13
io_led_bule = 14
io_led_green = 12
fm.register(io_led_red, fm.fpioa.GPIO0)
fm.register(io_led_bule, fm.fpioa.GPIO1)
fm.register(io_led_green, fm.fpioa.GPIO2)
led_r=GPIO(GPIO.GPIO0, GPIO.OUT)
led_b=GPIO(GPIO.GPIO1, GPIO.OUT)
led_g=GPIO(GPIO.GPIO2, GPIO.OUT)

#串口
from fpioa_manager import fm
from machine import UART
# need your connect hardware IO 10/11 to loopback
fm.register(10, fm.fpioa.UART1_TX, force=True)
fm.register(9, fm.fpioa.UART1_RX, force=True)

def sending_data(cx,cy,ch):
    global uart;
    #frame=[0x2C,18,cx%0xff,int(cx/0xff),cy%0xff,int(cy/0xff),0x5B];
    #data = bytearray(frame)
    data = ustruct.pack("<bbhhhb",              #格式为俩个字符俩个短整型(2字节)
                   0x2C,                       #帧头1
                   0x12,                       #帧头2
                   int(cx), # up sample by 4    #数据1
                   int(cy), # up sample by 4    #数据2
                   int(ch),
                   0x5B)
    uart = UART(UART.UART1, 115200, 8, 1, 0, timeout=1000, read_buf_len=4096)
    uart.write(data);   #必须要传入一个字节数组


def lcd_show_except(e):
    import uio
    err_str = uio.StringIO()
    sys.print_exception(e, err_str)
    err_str = err_str.getvalue()
    img = image.Image(size=(224,224))
    img.draw_string(0, 10, err_str, scale=1, color=(0xff,0x00,0x00))
    lcd.display(img)

def main(anchors, labels = None, model_addr="/sd/m.kmodel", sensor_window=(240, 240), lcd_rotation=0, sensor_hmirror=False, sensor_vflip=False):
    sensor.reset()
    sensor.set_pixformat(sensor.RGB565)
    sensor.set_framesize(sensor.QVGA)
    sensor.set_windowing(sensor_window)
    sensor.set_hmirror(sensor_hmirror)
    sensor.set_vflip(sensor_vflip)
    sensor.run(1)

    lcd.init(type=1)
    lcd.rotation(lcd_rotation)
    lcd.clear(lcd.WHITE)

    #uart = UART(UART.UART1, 500000, 8, 1, 0, timeout=1000, read_buf_len=4096)
    #白灯开机指示
    led_r.value(0)
    led_b.value(0)
    led_g.value(0)


    if not labels:
        with open('labels.txt','r') as f:
            exec(f.read())
    if not labels:
        print("no labels.txt")
        img = image.Image(size=(320, 240))
        img.draw_string(90, 110, "no labels.txt", color=(255, 0, 0), scale=2)
        lcd.display(img)
        return 1
    try:
        img = image.Image("startup.jpg")
        lcd.display(img)
    except Exception:
        img = image.Image(size=(320, 240))
        img.draw_string(90, 110, "loading model...", color=(255, 255, 255), scale=2)
        lcd.display(img)

    try:
        task = None
        task = kpu.load(model_addr)
        kpu.init_yolo2(task, 0.5, 0.3, 5, anchors) # threshold:[0,1], nms_value: [0, 1]
        while(True):
            img = sensor.snapshot()
            t = time.ticks_ms()
            objects = kpu.run_yolo2(task, img)
            t = time.ticks_ms() - t
            if objects:
                for obj in objects:
                    pos = obj.rect()
                    img.draw_rectangle(pos)
                    img.draw_string(pos[0], pos[1], "%s : %.2f" %(labels[obj.classid()], obj.value()), scale=2, color=(255, 0, 0))
                    #串口发送数据
                    objx = (obj.x()+obj.w())/2
                    objy = (obj.y()+obj.h())/2
                    #uart.write("AB%sD%dE%dF" %(labels[obj.classid()], objx, objy))
                    #print("AB%sD%dE%dF" %(labels[obj.classid()], objx, objy))
                    if labels[obj.classid()] == "WWW":
                        sending_data(1,objx,objy)
                        led_r.value(0)
                    if labels[obj.classid()] == "CAR":
                        sending_data(2,objx,objy)
                        led_b.value(0)
                    if labels[obj.classid()] == "HHH":
                        sending_data(3,objx,objy)
                        led_g.value(0)
            else:
                sending_data(0,0,0)
                led_r.value(1)
                led_b.value(1)
                led_g.value(1)
                #print(00000)
            img.draw_string(0, 200, "t:%dms" %(t), scale=2, color=(255, 0, 0))

            lcd.display(img)
    except Exception as e:
        raise e
    finally:
        if not task is None:
            kpu.deinit(task)


if __name__ == "__main__":
    try:
        labels = ["CAR", "WWW", "HHH"]
        anchors = [5.5, 6.90625, 5.0, 5.0, 4.1875, 4.125, 6.875, 5.25, 10.5, 9.9375]
        # main(anchors = anchors, labels=labels, model_addr=0x300000, lcd_rotation=0)
        main(anchors = anchors, labels=labels, model_addr="/sd/m.kmodel")
    except Exception as e:
        sys.print_exception(e)
        lcd_show_except(e)
    finally:
        gc.collect()

单片机端的数据处理代码

//Maix字节处理
void Maix_Byte_Get(u8 bytedata){
		static u8 rec_sta;
	//u8 check_val=0;
	
	maix_buf[rec_sta] = bytedata;

	if(rec_sta==0)
	{
		if(bytedata==0x2C)
		{
			rec_sta=1;
		}
		else
		{
			rec_sta=0;
		}
	}
	
	else if(rec_sta==1)
	{
		if(bytedata==0x12)
		{
			rec_sta=2;
		}
		else
		{
			rec_sta=0;
		}
	}
	
	else if(rec_sta==2)
	{
		rec_sta=3;
	}


  else if(rec_sta == 3)
		{
			maix.clas = maix_buf[3]<<8|maix_buf[2];
			rec_sta=4;
		}
		
	else if(rec_sta ==4)
	{
		rec_sta=5;
	}
		
	else if(rec_sta == 5)
		{
			maix.pos_x = maix_buf[5]<<8|maix_buf[4];
			rec_sta=6;
		}
	
	else if(rec_sta == 6)
	{
		rec_sta=7;
	}
		
	else if(rec_sta == 7)
		{
			maix.pos_y = maix_buf[7]<<8|maix_buf[6];
			rec_sta = 8;
		}
	else if(rec_sta == 8)
	{
		rec_sta = 9;
	}
	else if(rec_sta ==9)
	{
		rec_sta = 0;
	}

	
}

版权声明：本文为CSDN博主「Orange--Lin」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/ORANGEbb/article/details/117395590

问题：在使用K210时使用官方介绍的串口通信，发送的数据为八位的数据，但是在使用中需要十六位的，因为所需数据可能涉及到百位。

解决方法：将数据打包后发送。

一下为打包函数：

def sending_data(cx,cy,ch):
    global uart;
    #frame=[0x2C,18,cx%0xff,int(cx/0xff),cy%0xff,int(cy/0xff),0x5B];
    #data = bytearray(frame)
    data = ustruct.pack("<bbhhhb",              #格式为俩个字符俩个短整型(2字节)
                   0x2C,                       #帧头1
                   0x12,                       #帧头2
                   int(cx), # up sample by 4    #数据1
                   int(cy), # up sample by 4    #数据2
                   int(ch),
                   0x5B)
    uart = UART(UART.UART1, 115200, 8, 1, 0, timeout=1000, read_buf_len=4096)
    uart.write(data);   #必须要传入一个字节数组

MAIX BIT K210端完整代码

# object detector boot.py
# generated by maixhub.com

import sensor, image, lcd, time
import KPU as kpu
import gc, sys

import ustruct

#LED
from fpioa_manager import fm
from Maix import GPIO
io_led_red = 13
io_led_bule = 14
io_led_green = 12
fm.register(io_led_red, fm.fpioa.GPIO0)
fm.register(io_led_bule, fm.fpioa.GPIO1)
fm.register(io_led_green, fm.fpioa.GPIO2)
led_r=GPIO(GPIO.GPIO0, GPIO.OUT)
led_b=GPIO(GPIO.GPIO1, GPIO.OUT)
led_g=GPIO(GPIO.GPIO2, GPIO.OUT)

#串口
from fpioa_manager import fm
from machine import UART
# need your connect hardware IO 10/11 to loopback
fm.register(10, fm.fpioa.UART1_TX, force=True)
fm.register(9, fm.fpioa.UART1_RX, force=True)

def sending_data(cx,cy,ch):
    global uart;
    #frame=[0x2C,18,cx%0xff,int(cx/0xff),cy%0xff,int(cy/0xff),0x5B];
    #data = bytearray(frame)
    data = ustruct.pack("<bbhhhb",              #格式为俩个字符俩个短整型(2字节)
                   0x2C,                       #帧头1
                   0x12,                       #帧头2
                   int(cx), # up sample by 4    #数据1
                   int(cy), # up sample by 4    #数据2
                   int(ch),
                   0x5B)
    uart = UART(UART.UART1, 115200, 8, 1, 0, timeout=1000, read_buf_len=4096)
    uart.write(data);   #必须要传入一个字节数组


def lcd_show_except(e):
    import uio
    err_str = uio.StringIO()
    sys.print_exception(e, err_str)
    err_str = err_str.getvalue()
    img = image.Image(size=(224,224))
    img.draw_string(0, 10, err_str, scale=1, color=(0xff,0x00,0x00))
    lcd.display(img)

def main(anchors, labels = None, model_addr="/sd/m.kmodel", sensor_window=(240, 240), lcd_rotation=0, sensor_hmirror=False, sensor_vflip=False):
    sensor.reset()
    sensor.set_pixformat(sensor.RGB565)
    sensor.set_framesize(sensor.QVGA)
    sensor.set_windowing(sensor_window)
    sensor.set_hmirror(sensor_hmirror)
    sensor.set_vflip(sensor_vflip)
    sensor.run(1)

    lcd.init(type=1)
    lcd.rotation(lcd_rotation)
    lcd.clear(lcd.WHITE)

    #uart = UART(UART.UART1, 500000, 8, 1, 0, timeout=1000, read_buf_len=4096)
    #白灯开机指示
    led_r.value(0)
    led_b.value(0)
    led_g.value(0)


    if not labels:
        with open('labels.txt','r') as f:
            exec(f.read())
    if not labels:
        print("no labels.txt")
        img = image.Image(size=(320, 240))
        img.draw_string(90, 110, "no labels.txt", color=(255, 0, 0), scale=2)
        lcd.display(img)
        return 1
    try:
        img = image.Image("startup.jpg")
        lcd.display(img)
    except Exception:
        img = image.Image(size=(320, 240))
        img.draw_string(90, 110, "loading model...", color=(255, 255, 255), scale=2)
        lcd.display(img)

    try:
        task = None
        task = kpu.load(model_addr)
        kpu.init_yolo2(task, 0.5, 0.3, 5, anchors) # threshold:[0,1], nms_value: [0, 1]
        while(True):
            img = sensor.snapshot()
            t = time.ticks_ms()
            objects = kpu.run_yolo2(task, img)
            t = time.ticks_ms() - t
            if objects:
                for obj in objects:
                    pos = obj.rect()
                    img.draw_rectangle(pos)
                    img.draw_string(pos[0], pos[1], "%s : %.2f" %(labels[obj.classid()], obj.value()), scale=2, color=(255, 0, 0))
                    #串口发送数据
                    objx = (obj.x()+obj.w())/2
                    objy = (obj.y()+obj.h())/2
                    #uart.write("AB%sD%dE%dF" %(labels[obj.classid()], objx, objy))
                    #print("AB%sD%dE%dF" %(labels[obj.classid()], objx, objy))
                    if labels[obj.classid()] == "WWW":
                        sending_data(1,objx,objy)
                        led_r.value(0)
                    if labels[obj.classid()] == "CAR":
                        sending_data(2,objx,objy)
                        led_b.value(0)
                    if labels[obj.classid()] == "HHH":
                        sending_data(3,objx,objy)
                        led_g.value(0)
            else:
                sending_data(0,0,0)
                led_r.value(1)
                led_b.value(1)
                led_g.value(1)
                #print(00000)
            img.draw_string(0, 200, "t:%dms" %(t), scale=2, color=(255, 0, 0))

            lcd.display(img)
    except Exception as e:
        raise e
    finally:
        if not task is None:
            kpu.deinit(task)


if __name__ == "__main__":
    try:
        labels = ["CAR", "WWW", "HHH"]
        anchors = [5.5, 6.90625, 5.0, 5.0, 4.1875, 4.125, 6.875, 5.25, 10.5, 9.9375]
        # main(anchors = anchors, labels=labels, model_addr=0x300000, lcd_rotation=0)
        main(anchors = anchors, labels=labels, model_addr="/sd/m.kmodel")
    except Exception as e:
        sys.print_exception(e)
        lcd_show_except(e)
    finally:
        gc.collect()

单片机端的数据处理代码

//Maix字节处理
void Maix_Byte_Get(u8 bytedata){
		static u8 rec_sta;
	//u8 check_val=0;
	
	maix_buf[rec_sta] = bytedata;

	if(rec_sta==0)
	{
		if(bytedata==0x2C)
		{
			rec_sta=1;
		}
		else
		{
			rec_sta=0;
		}
	}
	
	else if(rec_sta==1)
	{
		if(bytedata==0x12)
		{
			rec_sta=2;
		}
		else
		{
			rec_sta=0;
		}
	}
	
	else if(rec_sta==2)
	{
		rec_sta=3;
	}


  else if(rec_sta == 3)
		{
			maix.clas = maix_buf[3]<<8|maix_buf[2];
			rec_sta=4;
		}
		
	else if(rec_sta ==4)
	{
		rec_sta=5;
	}
		
	else if(rec_sta == 5)
		{
			maix.pos_x = maix_buf[5]<<8|maix_buf[4];
			rec_sta=6;
		}
	
	else if(rec_sta == 6)
	{
		rec_sta=7;
	}
		
	else if(rec_sta == 7)
		{
			maix.pos_y = maix_buf[7]<<8|maix_buf[6];
			rec_sta = 8;
		}
	else if(rec_sta == 8)
	{
		rec_sta = 9;
	}
	else if(rec_sta ==9)
	{
		rec_sta = 0;
	}

	
}

版权声明：本文为CSDN博主「Orange--Lin」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/ORANGEbb/article/details/117395590

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