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pyboard板简称PYB或pyb,运行使用的是MircoPython文件系统,MicroPython是在单片机上可以跑的Python,也就是说,你可以通过Python脚本语言开发单片机程序.在MicroPython设备板(pyboard)上你可以通过Python代码轻松控制微控制器的各种外设,比如LED等,读取管脚电压,各种总线通讯,或控制其他设备联网通讯等等。 使用python语言的好处就是几乎要实现的控制环节用3行代码就可以搞定,开发周期短,见效速度快,从想法到实现没有中间环节,如果不会Pyhthon语言请客官花费30分钟仔细拜读以下一张图片完成python入门。

PYBv1.0 pinout

下图为YD-PYBv1.1引脚功能示意图示意图. PYBv1.1引脚功能中文 PYBv1.1引脚功能英文

PYBv1.0 pinout

如果这是你第一次使用pyboard 请先考虑阅读以下参考两篇入门:

基础控制命令

详情参考 pyb.

import pyb

pyb.repl_uart(pyb.UART(1, 9600)) # duplicate REPL on UART(1)
pyb.wfi() # pause CPU, waiting for interrupt
pyb.freq() # get CPU and bus frequencies
pyb.freq(60000000) # set CPU freq to 60MHz
pyb.stop() # stop CPU, waiting for external interrupt

延时和定时

使用 time 模块:

import time

time.sleep(1)           # sleep for 1 second
time.sleep_ms(500)      # sleep for 500 milliseconds
time.sleep_us(10)       # sleep for 10 microseconds
start = time.ticks_ms() # get value of millisecond counter
delta = time.ticks_diff(time.ticks_ms(), start) # compute time difference

板载LED控制

参考 pyb.LED.

from pyb import LED

led = LED(1) # 1=red, 2=green, 3=yellow, 4=blue
led.toggle()
led.on()
led.off()

# LEDs 3 and 4 support PWM intensity (0-255)
LED(4).intensity()    # get intensity
LED(4).intensity(128) # set intensity to half

板子用户按键

参考 pyb.Switch.

from pyb import Switch

sw = Switch()
sw.value() # returns True or False
sw.callback(lambda: pyb.LED(1).toggle())

引脚和通用输入输出引脚控制

参考 pyb.Pin.

from pyb import Pin

p_out = Pin('X1', Pin.OUT_PP)
p_out.high()
p_out.low()

p_in = Pin('X2', Pin.IN, Pin.PULL_UP)
p_in.value() # get value, 0 or 1

舵机控制

参考 pyb.Servo.

from pyb import Servo

s1 = Servo(1) # servo on position 1 (X1, VIN, GND)
s1.angle(45) # move to 45 degrees
s1.angle(-60, 1500) # move to -60 degrees in 1500ms
s1.speed(50) # for continuous rotation servos

外部中断

参考 pyb.ExtInt.

from pyb import Pin, ExtInt

callback = lambda e: print("intr")
ext = ExtInt(Pin('Y1'), ExtInt.IRQ_RISING, Pin.PULL_NONE, callback)

定时器

参考 pyb.Timer.

from pyb import Timer

tim = Timer(1, freq=1000)
tim.counter() # get counter value
tim.freq(0.5) # 0.5 Hz
tim.callback(lambda t: pyb.LED(1).toggle())

RTC (实时时钟)

参考 pyb.RTC

from pyb import RTC

rtc = RTC()
rtc.datetime((2017, 8, 23, 1, 12, 48, 0, 0)) # set a specific date and time
rtc.datetime() # get date and time

PWM (脉宽调制输出)

参考 pyb.Pin & pyb.Timer.

from pyb import Pin, Timer

p = Pin('X1') # X1 has TIM2, CH1
tim = Timer(2, freq=1000)
ch = tim.channel(1, Timer.PWM, pin=p)
ch.pulse_width_percent(50)

ADC (模数转换)

参考 pyb.Pin & pyb.ADC.

from pyb import Pin, ADC

adc = ADC(Pin('X19'))
adc.read() # read value, 0-4095

DAC (数模转换)

参考 pyb.Pin & pyb.DAC.

from pyb import Pin, DAC

dac = DAC(Pin('X5'))
dac.write(120) # output between 0 and 255

UART (串口)

参考 pyb.UART.

from pyb import UART

uart = UART(1, 9600)
uart.write('hello')
uart.read(5) # read up to 5 bytes

SPI 总线

参考 pyb.SPI.

from pyb import SPI

spi = SPI(1, SPI.MASTER, baudrate=200000, polarity=1, phase=0)
spi.send('hello')
spi.recv(5) # receive 5 bytes on the bus
spi.send_recv('hello') # send and receive 5 bytes

I2C 总线

参考 pyb.I2C.

from pyb import I2C

i2c = I2C(1, I2C.MASTER, baudrate=100000)
i2c.scan() # returns list of slave addresses
i2c.send('hello', 0x42) # send 5 bytes to slave with address 0x42
i2c.recv(5, 0x42) # receive 5 bytes from slave
i2c.mem_read(2, 0x42, 0x10) # read 2 bytes from slave 0x42, slave memory 0x10
i2c.mem_write('xy', 0x42, 0x10) # write 2 bytes to slave 0x42, slave memory 0x10

CAN 总线

参考 pyb.CAN.

from pyb import CAN

can = CAN(1, CAN.LOOPBACK)
can.setfilter(0, CAN.LIST16, 0, (123, 124, 125, 126))
can.send('message!', 123)   # send a message with id 123
can.recv(0)                 # receive message on FIFO 0

板载加速度传感器

参考 pyb.Accel.

from pyb import Accel

accel = Accel()
print(accel.x(), accel.y(), accel.z(), accel.tilt())