#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "esp_system.h"
#include "esp_log.h"
#include "driver/pcnt.h"
#include "driver/gpio.h"
#include <soc/pcnt_reg.h>
#include "soc/dport_access.h"
#include <soc/pcnt_struct.h>
#include "driver/ledc.h"
#include <SPI.h>

void setup() {
    // put your setup code here, to run once:
    Serial.begin(115200);
    Serial.println("Hello, ESP32!");

    SPI.begin(-1, -1, -1, -1);
    SPI.setFrequency(10000);
    //int sck2 = 12;
    pinMode(21, OUTPUT);
    pinMode(22, OUTPUT);
    //pinMatrixOutAttach(sck, VSPICLK_OUT_IDX, false, false);
    //gpio_matrix_in(14, VSPICLK_IN_IDX, false);
  //	gpio_matrix_out(14, LEDC_HS_SIG_OUT0_IDX, false, false);
    gpio_matrix_out(21, VSPID_IN_IDX, false, false);
    gpio_matrix_out(22, VSPID_IN_IDX, false, false);
}

void loop() {
    // put your main code here, to run repeatedly:
    delay(10); // this speeds up the simulation
    SPI.write(0xaa);
    delay(1000);
    SPI.write(0xaa);
    delay(1000);
}