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docs/esp8266/quickref: Update information on SPI classes.

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SPI(1) is not used for hardware SPI. Few more details are provided.
This commit is contained in:
Paul Sokolovsky 2016-09-04 21:13:55 +03:00
parent dba40afa70
commit 20da9064d7
1 changed files with 5 additions and 3 deletions
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8
docs/esp8266/quickref.rst
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@ -165,7 +165,8 @@ Use the ``machine.ADC`` class::
SPI bus SPI bus
------- -------
There are two SPI drivers. One is implemented in software and works on all pins:: There are two SPI drivers. One is implemented in software (bit-banging)
and works on all pins::
from machine import Pin, SPI from machine import Pin, SPI
@ -194,14 +195,15 @@ 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 gpio12, ``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, SPI from machine import Pin, SPI
hspi = SPI(0, baudrate=80000000, polarity=0, phase=0) hspi = SPI(1, baudrate=80000000, polarity=0, phase=0)
(SPI(0) is used for FlashROM and not available to users.)
I2C bus I2C bus
------- -------