K210_MaixPy IDE peripheral development part 2 lights

Development board: K210 AIRV R3 version widora

Development environment: MaixPy IDE silicon speed home

Required reference sites:

https://cn.maixpy.sipeed.com/zh/api_reference/Maix/fpioa.html

https://cn.maixpy.sipeed.com/zh/api_reference/Maix/gpio.html

 

(One)

Open MaixPy IDE

create a new file

Save it under the name _1led.py

 

 

If you want an electric light, you need to know where the LED light is and open the schematic diagram of your own board.

My side is the WIDORA V3 development board, I use IO17 and 18, and the high level is on and the low level is off.

 

 

To use GPIO and GPIOA

 

Get the code in first

from Maix import FPIOA
from Maix import GPIO

 

To configure IO17 and IO18, first look at the function of FPIOA

So we also refer to the above (according to mine, his fm is not imported, you will get an error if you use it directly)

Bind IO17 to GPIOHS0, and similarly bind IO18 to HS1

fpioa = FPIOA()
fpioa.set_function(17,fpioa.GPIOHS0)
fpioa.set_function(18,fpioa.GPIOHS1)

Pin binding is complete, let’s start configuring GPIO output mode

 

 

The same, I copied a wave

led1 = GPIO(GPIO.GPIOHS0,GPIO.OUT)
led2 = GPIO(GPIO.GPIOHS1,GPIO.OUT)

Note that the GPIOHS0 binding is IO17 bound to the above set_function, so it does not mean IO0. 

If you use set_function(0, gpioa.GPIOHS0), it is the IO0 bound to GPIOHS0

 

Then assign 0 or 1 to the LED

same

led1.value(1)
led2.value(1) //高电平
led1.value(0)//低电平

This will initialize the LED, just use it directly below

To use delay,

import utime

Then let him run in an endless loop, pay attention to the python syntax to backspace

 

The overall code is as follows

import utime 
from Maix import FPIOA
from Maix import GPIO

fpioa = FPIOA()
fpioa.set_function(17,fpioa.GPIOHS0)
fpioa.set_function(18,fpioa.GPIOHS1)

led1 = GPIO(GPIO.GPIOHS0,GPIO.OUT)
led2 = GPIO(GPIO.GPIOHS1,GPIO.OUT)

while(1):
    led1.value(1)
    led2.value(0)
    utime.sleep_ms(500)
    led1.value(0)
    led2.value(1)
    utime.sleep_ms(500)

 

 

Open the zipper, select your K210 serial port, my side is COM4

 

After connecting to the development board, the zipper turns red, just press the green play button. At the same time, I suggest to switch to the serial terminal next door to see the information on the development board.

If you run according to my code and see two blue LED lights alternately, it proves that the light is successful

 

Note that this green run (play) only runs the current py code, if you want to burn it to the development board

Just save the script to Boot.py

 

 

Test after burning: click red to play and turn green, and red zipper to green,

Disconnect the USB of the development board, and then plug it in again. After that, you should be running the program to burn boot.py

 

 

After lighting up, see you in the next section