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docs/esp8266/quickref: Fix and update the SPI docs

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Use the `SPI` factory function in the examples, and use
proper baud rate of 80 000 000.
This commit is contained in:
Radomir Dopieralski 2016-08-27 19:07:14 +02:00 committed by Damien George
parent 263aaa7030
commit ed0a06a93f
1 changed files with 5 additions and 5 deletions
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10
docs/esp8266/quickref.rst
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@ -165,14 +165,14 @@ Use the ``machine.ADC`` class::
SPI bus SPI bus
------- -------
The SPI driver is implemented in software and works on all pins:: There are two SPI drivers. One is implemented in software and works on all pins::
from machine import Pin, SPI from machine import Pin, SPI
# construct an SPI bus on the given pins # construct an SPI bus on the given pins
# polarity is the idle state of SCK # polarity is the idle state of SCK
# phase=0 means sample on the first edge of SCK, phase=1 means the second # phase=0 means sample on the first edge of SCK, phase=1 means the second
spi = SPI(baudrate=100000, polarity=1, phase=0, sck=Pin(0), mosi=Pin(2), miso=Pin(4)) spi = SPI(-1, baudrate=100000, polarity=1, phase=0, sck=Pin(0), mosi=Pin(2), miso=Pin(4))
spi.init(baudrate=200000) # set the baudrate spi.init(baudrate=200000) # set the baudrate
@ -194,13 +194,13 @@ Hardware SPI
------------ ------------
The hardware SPI is faster (up to 80Mhz), but only works on following pins: The hardware SPI is faster (up to 80Mhz), but only works on following pins:
``MISO`` is gpio2, ``MOSI`` is gpio13, and ``SCK`` is gpio14. It has the same ``MISO`` is gpio12, ``MOSI`` is gpio13, and ``SCK`` is gpio14. It has the same
methods as SPI, except for the pin parameters for the constructor and init methods as SPI, except for the pin parameters for the constructor and init
(as those are fixed). (as those are fixed).
from machine import Pin, HSPI from machine import Pin, SPI
hspi = HSPI(baudrate=800000000, polarity=0, phase=0) hspi = SPI(0, baudrate=80000000, polarity=0, phase=0)
I2C bus I2C bus