K210 例程

扫描IIC设备

from machine import I2C
i2c = I2C(I2C.I2C0, freq=100000, scl=28, sda=29)
devices = i2c.scan()
print(devices)

PWM

from machine import Timer,PWM
import time

tim = Timer(Timer.TIMER0, Timer.CHANNEL0, mode=Timer.MODE_PWM)
ch = PWM(tim, freq=500000, duty=50, pin=board_info.LED_G)
duty=0
dir = True
while True:
    if dir:
        duty += 10
    else:
        duty -= 10
    if duty>100:
        duty = 100
        dir = False
    elif duty<0:
        duty = 0
        dir = True
    time.sleep(0.05)
    ch.duty(duty)

实时拍照

   import sensor
    import image
    import lcd
    lcd.init()
    sensor.reset()
    sensor.set_pixformat(sensor.RGB565)
    sensor.set_framesize(sensor.QVGA)
    sensor.run(1)
    while True:
        img=sensor.snapshot()
        lcd.display(img)

找颜色

import sensor
import image
import lcd
import time
lcd.init()
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.run(1)
green_threshold   = (0,   80,  -70,   -10,   -0,   30)
while True:
    img=sensor.snapshot()
    blobs = img.find_blobs([green_threshold])
    if blobs:    
        for b in blobs:
            tmp=img.draw_rectangle(b[0:4]) 
            tmp=img.draw_cross(b[5], b[6]) 
            c=img.get_pixel(b[5], b[6])
    lcd.display(img)

显示fps

import sensor
import image
import lcd
import time

clock = time.clock()
lcd.init()
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.run(1)
sensor.skip_frames(30)
while True:
    clock.tick()
    img = sensor.snapshot()
    fps =clock.fps()
    img.draw_string(2,2, ("%2.1ffps" %(fps)), color=(0,128,0), scale=2)
    lcd.display(img)

扫描二维码

import sensor
import image
import lcd
import time

clock = time.clock()
lcd.init()
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.set_vflip(1)
sensor.run(1)
sensor.skip_frames(30)
while True:
    clock.tick()
    img = sensor.snapshot()
    res = img.find_qrcodes()
    fps =clock.fps()
    if len(res) > 0:
        img.draw_string(2,2, res[0].payload(), color=(0,128,0), scale=2)
        print(res[0].payload())
    lcd.display(img)