#include <Arduino.h>

#if CONFIG_FREERTOS_UNICORE
static const BaseType_t app_cpu= 0;

#else
static const BaseType_t app_cpu=1;
#endif

TaskHandle_t * task_user=NULL;
TaskHandle_t * task_serial=NULL;


// char buff[255];
char *buff= NULL;
int buff_len=0;

void user_input(void *parameter){

  while (1) {
    buff_len = Serial.available();
    buff = (char*)realloc(buff,buff_len * sizeof(char));
    Serial.println(xPortGetFreeHeapSize());
    for (int i=0; i<buff_len; i++){
      buff[i]=Serial.read();
    }
    vTaskDelay(50/portTICK_PERIOD_MS);
  }
}


void serial_output(void *parameter){

  while (1) {
    Serial.write(buff,buff_len);
    if (buff_len!=0){
      Serial.println(buff_len);
      buff_len=0;
    }
    vTaskDelay(10/portTICK_PERIOD_MS);
    }
}

void setup() {
  Serial.begin(115200);
  xTaskCreatePinnedToCore(user_input,"user_input", 1024, NULL, 1, task_user, app_cpu);
  vTaskDelay(500/portTICK_PERIOD_MS);
  xTaskCreatePinnedToCore(serial_output,"serial_output", 1024, NULL, 1, task_serial, app_cpu);

}

void loop() {
  // put your main code here, to run repeatedly:

}