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988 B
ReStructuredText
40 lines
988 B
ReStructuredText
Custom SPI Device
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=================
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Lots of devices communicate using the SPI protocol. If you want to integrate
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a device into esphomelib that uses this protocol you can pretty much use almost
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all Arduino-based code because the ``SPI`` library is also available in esphomelib.
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See the other custom component guides for how to register components and make
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them publish values.
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.. code-block:: cpp
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#include "esphomelib.h"
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using namespace esphomelib;
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class MyCustomComponent : public Component {
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public:
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void setup() override {
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SPI.pins(SCK_PIN, MISO_PIN, MOSI_PIN);
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SPI.begin();
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pinMode(CS_PIN, OUTPUT);
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}
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void loop() override {
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digitalWrite(CS_PIN, LOW);
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SPI.beginTransaction(...);
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SPI.write(0x42);
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digitalWrite(CS_PIN, HIGH);
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}
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};
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See Also
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--------
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- `Edit this page on GitHub <https://github.com/OttoWinter/esphomedocs/blob/current/esphomeyaml/custom/spi.rst>`__
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.. disqus::
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