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