Wireles stick lite pin declaration

#1

Buenas tardes,

I have a wireless stick lite module.

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I want to use spi to communicate a sensor without interrupting the sending of messages to ttn v3.

What do you think I can use to make this communication?

Thank you very much for your help

#2

You can use another set of SPI, you can refer to CubeCell’s SPI(https://github.com/HelTecAutomation/CubeCell-Arduino/tree/master/cores/asr650x/SPI) to start the second set of SPI.

#3

ESP32’s SPI pins can use any GPIO, and you can select free GPIO pins as SPI pins.

#4

Thank you very much for your answer, will you have a small example for the pin declaration to use any pin for the SPI in the wireless stick lite?

I have tried but have no signal response

#5

I want to have data from an RC522 card but I have no data, I have looked everywhere but I have had no response

#6

/* The ESP32 has four SPi buses, however as of right now only two of

  • them are available to use, HSPI and VSPI. Simply using the SPI API
  • as illustrated in Arduino examples will use VSPI, leaving HSPI unused.
  • However if we simply intialise two instance of the SPI class for both
  • of these buses both can be used. However when just using these the Arduino
  • way only will actually be outputting at a time.
  • Logic analyser capture is in the same folder as this example as
  • “multiple_bus_output.png”
  • created 30/04/2018 by Alistair Symonds
    */
    #include <SPI.h>

// Define ALTERNATE_PINS to use non-standard GPIO pins for SPI bus

#ifdef ALTERNATE_PINS
#define VSPI_MISO 2
#define VSPI_MOSI 4
#define VSPI_SCLK 0
#define VSPI_SS 33

#define HSPI_MISO 26
#define HSPI_MOSI 27
#define HSPI_SCLK 25
#define HSPI_SS 32
#else
#define VSPI_MISO MISO
#define VSPI_MOSI MOSI
#define VSPI_SCLK SCK
#define VSPI_SS SS

#define HSPI_MISO 12
#define HSPI_MOSI 13
#define HSPI_SCLK 14
#define HSPI_SS 15
#endif

static const int spiClk = 1000000; // 1 MHz

//uninitalised pointers to SPI objects
SPIClass * vspi = NULL;
SPIClass * hspi = NULL;

void setup() {
//initialise two instances of the SPIClass attached to VSPI and HSPI respectively
vspi = new SPIClass(VSPI);
hspi = new SPIClass(HSPI);

//clock miso mosi ss

#ifndef ALTERNATE_PINS
//initialise vspi with default pins
//SCLK = 18, MISO = 19, MOSI = 23, SS = 5
vspi->begin();
#else
//alternatively route through GPIO pins of your choice
vspi->begin(VSPI_SCLK, VSPI_MISO, VSPI_MOSI, VSPI_SS); //SCLK, MISO, MOSI, SS
#endif

#ifndef ALTERNATE_PINS
//initialise hspi with default pins
//SCLK = 14, MISO = 12, MOSI = 13, SS = 15
hspi->begin();
#else
//alternatively route through GPIO pins
hspi->begin(HSPI_SCLK, HSPI_MISO, HSPI_MOSI, HSPI_SS); //SCLK, MISO, MOSI, SS
#endif

//set up slave select pins as outputs as the Arduino API
//doesn’t handle automatically pulling SS low
pinMode(VSPI_SS, OUTPUT); //VSPI SS
pinMode(HSPI_SS, OUTPUT); //HSPI SS

}

// the loop function runs over and over again until power down or reset
void loop() {
//use the SPI buses
vspiCommand();
hspiCommand();
delay(100);
}

void vspiCommand() {
byte data = 0b01010101; // junk data to illustrate usage

//use it as you would the regular arduino SPI API
vspi->beginTransaction(SPISettings(spiClk, MSBFIRST, SPI_MODE0));
digitalWrite(VSPI_SS, LOW); //pull SS slow to prep other end for transfer
vspi->transfer(data);
digitalWrite(VSPI_SS, HIGH); //pull ss high to signify end of data transfer
vspi->endTransaction();
}

void hspiCommand() {
byte stuff = 0b11001100;

hspi->beginTransaction(SPISettings(spiClk, MSBFIRST, SPI_MODE0));
digitalWrite(HSPI_SS, LOW);
hspi->transfer(stuff);
digitalWrite(HSPI_SS, HIGH);
hspi->endTransaction();
}