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== XIAO RP2040
  * 2022/11/01 Amazon ￥1,419.-

||[[Image(XiaoRP2040.png, 400)]]||

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== XIAO RP2040 の動作ログ
  * USBケーブルで接続し、!TeraTerm で開くと MicroPython が動作している

{{{
>>> help()
Welcome to MicroPython!

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

For access to the hardware use the 'machine' module.  RP2 specific commands
are in the 'rp2' module.

Quick overview of some objects:
  machine.Pin(pin) -- get a pin, eg machine.Pin(0)
  machine.Pin(pin, m, [p]) -- get a pin and configure it for IO mode m, pull mode p
    methods: init(..), value([v]), high(), low(), irq(handler)
  machine.ADC(pin) -- make an analog object from a pin
    methods: read_u16()
  machine.PWM(pin) -- make a PWM object from a pin
    methods: deinit(), freq([f]), duty_u16([d]), duty_ns([d])
  machine.I2C(id) -- create an I2C object (id=0,1)
    methods: readfrom(addr, buf, stop=True), writeto(addr, buf, stop=True)
             readfrom_mem(addr, memaddr, arg), writeto_mem(addr, memaddr, arg)
  machine.SPI(id, baudrate=1000000) -- create an SPI object (id=0,1)
    methods: read(nbytes, write=0x00), write(buf), write_readinto(wr_buf, rd_buf)
  machine.Timer(freq, callback) -- create a software timer object
    eg: machine.Timer(freq=1, callback=lambda t:print(t))

Pins are numbered 0-29, and 26-29 have ADC capabilities
Pin IO modes are: Pin.IN, Pin.OUT, Pin.ALT
Pin pull modes are: Pin.PULL_UP, Pin.PULL_DOWN

Useful control commands:
  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')
>>>
>>> help('modules')
__main__          gc                uasyncio/event    umachine
_boot             lwip              uasyncio/funcs    uos
_boot_fat         math              uasyncio/lock     urandom
_onewire          micropython       uasyncio/stream   ure
_rp2              mip               ubinascii         urequests
_thread           neopixel          ucollections      uselect
_uasyncio         network           ucryptolib        usocket
_webrepl          ntptime           uctypes           ussl
builtins          onewire           uerrno            ustruct
cmath             rp2               uhashlib          usys
dht               uarray            uheapq            utime
ds18x20           uasyncio/__init__ uio               uwebsocket
framebuf          uasyncio/core     ujson             uzlib
Plus any modules on the filesystem
>>>
>>> help(rp2)
object <module 'rp2' from 'rp2.py'> is of type module
  country -- <function>
  PIOASMEmit -- <class 'PIOASMEmit'>
  __file__ -- rp2.py
  asm_pio -- <function asm_pio at 0x20008580>
  const -- <function>
  PIOASMError -- <class 'PIOASMError'>
  PIO -- <class 'PIO'>
  __name__ -- rp2
  asm_pio_encode -- <function asm_pio_encode at 0x200085a0>
  StateMachine -- <class 'StateMachine'>
  Flash -- <class 'Flash'>
  dht_readinto -- <function>
  _pio_funcs -- {'in_': None, 'y_dec': 4, 'pin': 6, 'iffull': 64, 'gpio': 0, 'not_osre': 7, 'clear': 64, 'rel': <function <lambda> at 0x20008a50>, 'wrap': None, 'x_not_y': 5, 'word': None, 'out': None, 'push': None, 'noblock': 1, 'pull': None, 'wrap_target': None, 'x_dec': 2, 'mov': None, 'irq': None, 'set': None, 'y': 2, 'x': 1, 'null': 3, 'pc': 5, 'invert': <function <lambda> at 0x20008a30>, 'pins': 0, 'not_x': 1, 'not_y': 3, 'ifempty': 64, 'isr': 6, 'pindirs': 4, 'exec': 8, 'label': None, 'status': 5, 'nop': None, 'osr': 7, 'block': 33, 'reverse': <function <lambda> at 0x20008a40>, 'jmp': None, 'wait': None}
>>>
}}}

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