importmachinemachine.freq()# get the current frequency of the CPUmachine.freq(160000000)# set the CPU frequency to 160 MHz

importespesp.osdebug(None)# turn off vendor O/S debugging messagesesp.osdebug(0)# redirect vendor O/S debugging messages to UART(0)

importnetworkwlan=network.WLAN(network.WLAN.IF_STA)# create station interfacewlan.active(True)# activate the interfacewlan.scan()# scan for access pointswlan.isconnected()# check if the station is connected to an APwlan.connect('ssid','key')# connect to an APwlan.config('mac')# get the interface's MAC addresswlan.ipconfig('addr4')# get the interface's IPv4 addressesap=network.WLAN(network.WLAN.IF_AP)# create access-point interfaceap.active(True)# activate the interfaceap.config(ssid='ESP-AP')# set the SSID of the access point

defdo_connect():importnetworkwlan=network.WLAN(network.WLAN.IF_STA)wlan.active(True)ifnotwlan.isconnected():print('connecting to network...')wlan.connect('ssid','key')whilenotwlan.isconnected():passprint('network config:',wlan.ipconfig('addr4'))

importtimetime.sleep(1)# sleep for 1 secondtime.sleep_ms(500)# sleep for 500 millisecondstime.sleep_us(10)# sleep for 10 microsecondsstart=time.ticks_ms()# get millisecond counterdelta=time.ticks_diff(time.ticks_ms(),start)# compute time difference

frommachineimportTimertim=Timer(-1)tim.init(period=5000,mode=Timer.ONE_SHOT,callback=lambdat:print(1))tim.init(period=2000,mode=Timer.PERIODIC,callback=lambdat:print(2))

frommachineimportPinp0=Pin(0,Pin.OUT)# create output pin on GPIO0p0.on()# set pin to "on" (high) levelp0.off()# set pin to "off" (low) levelp0.value(1)# set pin to on/highp2=Pin(2,Pin.IN)# create input pin on GPIO2print(p2.value())# get value, 0 or 1p4=Pin(4,Pin.IN,Pin.PULL_UP)# enable internal pull-up resistorp5=Pin(5,Pin.OUT,value=1)# set pin high on creation

frommachineimportUARTuart=UART(0,baudrate=9600)uart.write('hello')uart.read(5)# read up to 5 bytes

importosos.dupterm(None,1)

importos,machineuart=machine.UART(0,115200)os.dupterm(uart,1)

frommachineimportPin,PWMpwm0=PWM(Pin(0))# create PWM object from a pinpwm0.freq()# get current frequencypwm0.freq(1000)# set frequencypwm0.duty()# get current duty cyclepwm0.duty(200)# set duty cyclepwm0.deinit()# turn off PWM on the pinpwm2=PWM(Pin(2),freq=500,duty=512)# create and configure in one go

frommachineimportADCadc=ADC(0)# create ADC object on ADC pinadc.read()# read value, 0-1024

frommachineimportPin,SoftSPI# construct an SPI bus on the given pins# polarity is the idle state of SCK# phase=0 means sample on the first edge of SCK, phase=1 means the secondspi=SoftSPI(baudrate=100000,polarity=1,phase=0,sck=Pin(0),mosi=Pin(2),miso=Pin(4))spi.init(baudrate=200000)# set the baudratespi.read(10)# read 10 bytes on MISOspi.read(10,0xff)# read 10 bytes while outputting 0xff on MOSIbuf=bytearray(50)# create a bufferspi.readinto(buf)# read into the given buffer (reads 50 bytes in this case)spi.readinto(buf,0xff)# read into the given buffer and output 0xff on MOSIspi.write(b'12345')# write 5 bytes on MOSIbuf=bytearray(4)# create a bufferspi.write_readinto(b'1234',buf)# write to MOSI and read from MISO into the bufferspi.write_readinto(buf,buf)# write buf to MOSI and read MISO back into buf

frommachineimportPin,SPIhspi=SPI(1,baudrate=80000000,polarity=0,phase=0)

frommachineimportPin,I2C# construct an I2C busi2c=I2C(scl=Pin(5),sda=Pin(4),freq=100000)i2c.readfrom(0x3a,4)# read 4 bytes from peripheral device with address 0x3ai2c.writeto(0x3a,'12')# write '12' to peripheral device with address 0x3abuf=bytearray(10)# create a buffer with 10 bytesi2c.writeto(0x3a,buf)# write the given buffer to the peripheral

frommachineimportRTCrtc=RTC()rtc.datetime((2017,8,23,0,1,12,48,0))# set a specific date and# time, eg. 2017/8/23 1:12:48# the day-of-week value is ignoredrtc.datetime()# get date and time# synchronize with ntp# need to be connected to wifiimportntptimentptime.settime()# set the rtc datetime from the remote serverrtc.datetime()# get the date and time in UTC

frommachineimportWDT# enable the WDTwdt=WDT()wdt.feed()

importmachine# configure RTC.ALARM0 to be able to wake the devicertc=machine.RTC()rtc.irq(trigger=rtc.ALARM0,wake=machine.DEEPSLEEP)# check if the device woke from a deep sleepifmachine.reset_cause()==machine.DEEPSLEEP_RESET:print('woke from a deep sleep')# set RTC.ALARM0 to fire after 10 seconds (waking the device)rtc.alarm(rtc.ALARM0,10000)# put the device to sleepmachine.deepsleep()

frommachineimportPinimportonewireow=onewire.OneWire(Pin(12))# create a OneWire bus on GPIO12ow.scan()# return a list of devices on the busow.reset()# reset the busow.readbyte()# read a byteow.writebyte(0x12)# write a byte on the busow.write('123')# write bytes on the busow.select_rom(b'12345678')# select a specific device by its ROM code

importtime,ds18x20ds=ds18x20.DS18X20(ow)roms=ds.scan()ds.convert_temp()time.sleep_ms(750)forrominroms:print(ds.read_temp(rom))

frommachineimportPinfromneopixelimportNeoPixelpin=Pin(0,Pin.OUT)# set GPIO0 to output to drive NeoPixelsnp=NeoPixel(pin,8)# create NeoPixel driver on GPIO0 for 8 pixelsnp[0]=(255,255,255)# set the first pixel to whitenp.write()# write data to all pixelsr,g,b=np[0]# get first pixel colour

frommachineimportPinfromapa102importAPA102clock=Pin(14,Pin.OUT)# set GPIO14 to output to drive the clockdata=Pin(13,Pin.OUT)# set GPIO13 to output to drive the dataapa=APA102(clock,data,8)# create APA102 driver on the clock and the data pin for 8 pixelsapa[0]=(255,255,255,31)# set the first pixel to white with a maximum brightness of 31apa.write()# write data to all pixelsr,g,b,brightness=apa[0]# get first pixel colour

importespesp.apa102_write(clock_pin,data_pin,rgbi_buf)

importdhtimportmachined=dht.DHT11(machine.Pin(4))d.measure()d.temperature()# eg. 23 (°C)d.humidity()# eg. 41 (% RH)d=dht.DHT22(machine.Pin(4))d.measure()d.temperature()# eg. 23.6 (°C)d.humidity()# eg. 41.3 (% RH)

frommachineimportPin,I2Cimportssd1306i2c=I2C(scl=Pin(5),sda=Pin(4),freq=100000)display=ssd1306.SSD1306_I2C(128,64,i2c)display.text('Hello World',0,0,1)display.show()

importwebrepl_setup

importwebreplwebrepl.start()