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docs/esp8266: Update quick reference: i2c.readfrom and neopixel example.

This commit is contained in:
Damien George 2016-03-16 13:37:39 +00:00
parent 3acaa28b52
commit 2466cb67f8
1 changed files with 4 additions and 3 deletions
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7
docs/esp8266/quickref.rst
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@ -183,15 +183,15 @@ The I2C driver is implemented in software and works on all pins::
# construct an I2C bus
i2c = I2C(scl=Pin(5), sda=Pin(4), freq=100000)
i2c.readfrom(0x3a, 4) # read 4 bytes from slave device with address 0x3a
i2c.writeto(0x3a, '12') # write '12' to slave device with address 0x3a
buf = bytearray(10) # create a buffer with 10 bytes
i2c.writeto(0x3a, buf) # write the given buffer to the slave
i2c.readfrom(0x3a, 4, stop=False) # don't send a stop bit after reading
i2c.writeto(0x3a, buf, stop=False) # don't send a stop bit after writing
Note that reading is not yet implemented.
OneWire driver
--------------
@ -227,7 +227,7 @@ NeoPixel driver
Use the ``neopixel`` module::
from machine import Pin
import neopixel
from neopixel import NeoPixel
pin = Pin(0, Pin.OUT) # set GPIO0 to output to drive NeoPixels
np = NeoPixel(pin, 8) # create NeoPixel driver on GPIO0 for 8 pixels
@ -235,6 +235,7 @@ Use the ``neopixel`` module::
np.write() # write data to all pixels
r, g, b = np[0] # get first pixel colour
import neopixel
neopixel.demo(np) # run a demo
For low-level driving of a NeoPixel::