MicroPython （一）点亮我的Led

工具 ：

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• putty
• F429Discovery 开发板
• Notepad++

注意：不知道为什么 其他的终端工具有问题，推荐 putty 基本没有发现问题

putty 实时调试

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1. 使用putty 打开USB 虚拟串口，我们打开可以使用help()方法寻求帮助

输入help()如下所示

help()
Welcome to MicroPython!

For online help please visit http://micropython.org/help/.

Quick overview of commands for the board:
pyb.info()    -- print some general information
pyb.delay(n)  -- wait for n milliseconds
pyb.millis()  -- get number of milliseconds since hard reset
pyb.Switch()  -- create a switch object
                 Switch methods: (), callback(f)
pyb.LED(n)    -- create an LED object for LED n (n=1,2,3,4)
                 LED methods: on(), off(), toggle(), intensity(<n>)
pyb.Pin(pin)  -- get a pin, eg pyb.Pin('X1')
pyb.Pin(pin, m, [p]) -- get a pin and configure it for IO mode m, pull mode p
                 Pin methods: init(..), value([v]), high(), low()
pyb.ExtInt(pin, m, p, callback) -- create an external interrupt object
pyb.ADC(pin)  -- make an analog object from a pin
                 ADC methods: read(), read_timed(buf, freq)
pyb.DAC(port) -- make a DAC object
                 DAC methods: triangle(freq), write(n), write_timed(buf, freq)
pyb.RTC()     -- make an RTC object; methods: datetime([val])
pyb.rng()     -- get a 30-bit hardware random number
pyb.Servo(n)  -- create Servo object for servo n (n=1,2,3,4)
                 Servo methods: calibration(..), angle([x, [t]]), speed([x, [t]])
pyb.Accel()   -- create an Accelerometer object
                 Accelerometer methods: x(), y(), z(), tilt(), filtered_xyz()

Pins are numbered X1-X12, X17-X22, Y1-Y12, or by their MCU name
Pin IO modes are: pyb.Pin.IN, pyb.Pin.OUT_PP, pyb.Pin.OUT_OD
Pin pull modes are: pyb.Pin.PULL_NONE, pyb.Pin.PULL_UP, pyb.Pin.PULL_DOWN
Additional serial bus objects: pyb.I2C(n), pyb.SPI(n), pyb.UART(n)

Control commands:
CTRL-A        -- on a blank line, enter raw REPL mode
CTRL-B        -- on a blank line, enter normal REPL mode
CTRL-C        -- interrupt a running program
CTRL-D        -- on a blank line, do a soft reset of the board
CTRL-E        -- on a blank line, enter paste mode

For further help on a specific object, type help(obj)
For a list of available modules, type help('modules')

上面就是所有的Micro Python 帮助文档。
输入下面的指令打开一个Led。

>>> import pyb
>>> led = pyb.LED(1)
>>> led.on()
>>> led.off()

MicroPython 脱机运行

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脱机运行指离开电脑独立运行，在插入USB的时候，电脑多了一个磁盘（不是Stlink V2.1），我们打开这个磁盘，里面有一个“main.py”文件。
打开这个文件，可以在里面输入如下代码

import pyb   
while true：   
    pyb.LED(1).on()   
    pyb.delay(500)   
    pyb.LED(1).off()    
    pyb.delay(500)  

保存“main.py”文件，完成复位即可。