kopia lustrzana https://github.com/micropython/micropython
docs/mimxrt: Change the examples which denote a Pin with a number.
This option was removed in PR #12211. Signed-off-by: robert-hh <robert@hammelrath.com>pull/12877/head
robert-hh
Damien George
rodzic
ae3b1cfab1
commit
e63d7189bc
|
|
@ -92,9 +92,7 @@ Use the :ref:`machine.Pin <machine.Pin>` class::
|
|||
|
||||
Available Pins follow the ranges and labelling of the respective board, like:
|
||||
|
||||
- 0-33 for Teensy 4.0,
|
||||
- 0-21 for the MIMXRT10xx-EVK board, or 'D0-Dxx', or 'A0-Ann',
|
||||
- 0-14 for the Olimex RT1010Py board, or 'D0'-'Dxx' and 'A0'-'Ann'
|
||||
- 'D0-Dxx', or 'A0-Ann' for Teensy 4.0, MIMXRT10xx-EVK ns Olimex board,
|
||||
- 'J3_xx', 'J4_xx', 'J5_xx' for the Seeed ARCH MIX board,
|
||||
|
||||
or the pin names of the Pin.board or Pin.cpu classes.
|
||||
|
|
@ -106,9 +104,9 @@ Notes:
|
|||
* At the MIMXRT1010_EVK, pins D4, D5 and D9 of the Arduino connector are by
|
||||
default not connected to the MCU. For details refer to the schematics.
|
||||
* At the MIMXRT1170_EVK board, the inner rows of the Arduino connectors are assigned as follows:
|
||||
- D16 - D23: J9, odd pin numbers; D17 is by default not connected.
|
||||
- D24 - D27: J26, odd pin numbers; J63-J66 have to be closed to enable these pins.
|
||||
- D29 - D36: J25, odd pin numbers; D29 and D30 are by default not connected.
|
||||
- 'D16' - 'D23': J9, odd pin numbers; 'D17' is by default not connected.
|
||||
- 'D24' - 'D27': J26, odd pin numbers; J63-J66 have to be closed to enable these pins.
|
||||
- 'D29' - 'D36': J25, odd pin numbers; 'D29' and 'D30' are by default not connected.
|
||||
|
||||
There's a higher-level abstraction :ref:`machine.Signal <machine.Signal>`
|
||||
which can be used to invert a pin. Useful for illuminating active-low LEDs
|
||||
|
|
@ -146,22 +144,22 @@ handling signal groups. ::
|
|||
from machine import Pin, PWM
|
||||
|
||||
# create PWM object from a pin and set the frequency and duty cycle
|
||||
pwm2 = PWM(Pin(2), freq=2000, duty_u16=32768)
|
||||
pwm2 = PWM(Pin('D2'), freq=2000, duty_u16=32768)
|
||||
pwm2.freq() # get the current frequency
|
||||
pwm2.freq(1000) # set/change the frequency
|
||||
pwm2.duty_u16() # get the current duty cycle, range 0-65535
|
||||
pwm2.duty_u16(200) # set the duty cycle, range 0-65535
|
||||
pwm2.deinit() # turn off PWM on the pin
|
||||
# create a complementary signal pair on Pin 2 and 3
|
||||
pwm2 = PWM((2, 3), freq=2000, duty_ns=20000)
|
||||
pwm2 = PWM(('D2', 'D3'), freq=2000, duty_ns=20000)
|
||||
|
||||
# Create a group of four synchronized signals.
|
||||
# Start with Pin(4) at submodule 0, which creates the sync pulse.
|
||||
pwm4 = PWM(Pin(4), freq=1000, align=PWM.HEAD)
|
||||
# Pins 5, 6, and 9 are pins at the same module
|
||||
pwm5 = PWM(Pin(5), freq=1000, duty_u16=10000, align=PWM.HEAD, sync=True)
|
||||
pwm6 = PWM(Pin(6), freq=1000, duty_u16=20000, align=PWM.HEAD, sync=True)
|
||||
pwm9 = PWM(Pin(9), freq=1000, duty_u16=30000, align=PWM.HEAD, sync=True)
|
||||
# Start with Pin('D4') at submodule 0, which creates the sync pulse.
|
||||
pwm4 = PWM(Pin('D4'), freq=1000, align=PWM.HEAD)
|
||||
# Pins D5, D6, and D9 are pins at the same module
|
||||
pwm5 = PWM(Pin('D5'), freq=1000, duty_u16=10000, align=PWM.HEAD, sync=True)
|
||||
pwm6 = PWM(Pin('D6', freq=1000, duty_u16=20000, align=PWM.HEAD, sync=True)
|
||||
pwm9 = PWM(Pin('D9'), freq=1000, duty_u16=30000, align=PWM.HEAD, sync=True)
|
||||
|
||||
pwm3 # show the PWM objects properties
|
||||
|
||||
|
|
@ -256,7 +254,7 @@ Use the :ref:`machine.ADC <machine.ADC>` class::
|
|||
|
||||
from machine import ADC
|
||||
|
||||
adc = ADC(Pin(32)) # create ADC object on ADC pin
|
||||
adc = ADC(Pin('A2')) # create ADC object on ADC pin
|
||||
adc.read_u16() # read value, 0-65536 across voltage range 0.0v - 3.3v
|
||||
|
||||
The resolution of the ADC is 12 bit with 10 to 11 bit accuracy, irrespective of the
|
||||
|
|
@ -274,7 +272,7 @@ Software SPI (using bit-banging) works on all pins, and is accessed via the
|
|||
# construct a SoftSPI 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 second
|
||||
spi = SoftSPI(baudrate=100000, polarity=1, phase=0, sck=Pin(0), mosi=Pin(2), miso=Pin(4))
|
||||
spi = SoftSPI(baudrate=100000, polarity=1, phase=0, sck=Pin('D0'), mosi=Pin('D2'), miso=Pin('D4'))
|
||||
|
||||
spi.init(baudrate=200000) # set the baudrate
|
||||
|
||||
|
|
@ -303,7 +301,7 @@ rates (up to 30Mhz). Hardware SPI is accessed via the
|
|||
from machine import SPI, Pin
|
||||
|
||||
spi = SPI(0, 10000000)
|
||||
cs_pin = Pin(6, Pin.OUT, value=1)
|
||||
cs_pin = Pin('D6', Pin.OUT, value=1)
|
||||
cs_pin(0)
|
||||
spi.write('Hello World')
|
||||
cs_pin(1)
|
||||
|
|
@ -331,7 +329,7 @@ accessed via the :ref:`machine.SoftI2C <machine.SoftI2C>` class::
|
|||
|
||||
from machine import Pin, SoftI2C
|
||||
|
||||
i2c = SoftI2C(scl=Pin(5), sda=Pin(4), freq=100000)
|
||||
i2c = SoftI2C(scl=Pin('D5'), sda=Pin('D4'), freq=100000)
|
||||
|
||||
i2c.scan() # scan for devices
|
||||
|
||||
|
|
@ -365,7 +363,7 @@ See :ref:`machine.I2S <machine.I2S>`. Example using a Teensy 4.1 board with a si
|
|||
external Codec like UDA1334.::
|
||||
|
||||
from machine import I2S, Pin
|
||||
i2s = I2S(2, sck=Pin(26), ws=Pin(27), sd=Pin(7),
|
||||
i2s = I2S(2, sck=Pin('D26'), ws=Pin('D27'), sd=Pin('D7'),
|
||||
mode=I2S.TX, bts=16,format=I2S.STEREO,
|
||||
rate=44100,ibuf=40000)
|
||||
i2s.write(buf) # write buffer of audio samples to I2S device
|
||||
|
|
@ -397,7 +395,7 @@ Example using the Teensy audio shield::
|
|||
|
||||
from machine import I2C, I2S, Pin
|
||||
from sgtl5000 import CODEC
|
||||
i2s = I2S(1, sck=Pin(21), ws=Pin(20), sd=Pin(7), mck=Pin(23),
|
||||
i2s = I2S(1, sck=Pin('D21'), ws=Pin('D20'), sd=Pin('D7'), mck=Pin('D23'),
|
||||
mode=I2S.TX, bits=16,rate=44100,format=I2S.STEREO,
|
||||
ibuf=40000,
|
||||
)
|
||||
|
|
@ -475,7 +473,7 @@ The OneWire driver is implemented in software and works on all pins::
|
|||
from machine import Pin
|
||||
import onewire
|
||||
|
||||
ow = onewire.OneWire(Pin(12)) # create a OneWire bus on GPIO12
|
||||
ow = onewire.OneWire(Pin('D12')) # create a OneWire bus on GPIO12
|
||||
ow.scan() # return a list of devices on the bus
|
||||
ow.reset() # reset the bus
|
||||
ow.readbyte() # read a byte
|
||||
|
|
@ -505,12 +503,12 @@ The DHT driver is implemented in software and works on all pins::
|
|||
import dht
|
||||
import machine
|
||||
|
||||
d = dht.DHT11(machine.Pin(4))
|
||||
d = dht.DHT11(machine.Pin('D4'))
|
||||
d.measure()
|
||||
d.temperature() # eg. 23 (°C)
|
||||
d.humidity() # eg. 41 (% RH)
|
||||
|
||||
d = dht.DHT22(machine.Pin(4))
|
||||
d = dht.DHT22(machine.Pin('D4'))
|
||||
d.measure()
|
||||
d.temperature() # eg. 23.6 (°C)
|
||||
d.humidity() # eg. 41.3 (% RH)
|
||||
|
|
|
|||
Ładowanie…
Reference in New Issue