ESP32 Forum

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Arduino: 1.6.7 (Windows 7), Board: "Beta ESP31B Module, 80 MHz, 40MHz, QIO, 256000, 2M (1M SPIFFS)"

C:\Program Files (x86)\Arduino\hardware\Espressif\ESP31B\cores\esp31b\core_esp31b_i2s.c: In function 'i2s_slc_begin':

C:\Program Files (x86)\Arduino\hardware\Espressif\ESP31B\cores\esp31b\core_esp31b_i2s.c:130:23: warning: passing argument 2 of 'xt_set_interrupt_handler' from incompatible pointer type [-Wincompatible-pointer-types]

   ETS_SLC_INTR_ATTACH(i2s_slc_isr, NULL);

                       ^

C:\Program Files (x86)\Arduino\hardware\Espressif\ESP31B\cores\esp31b\core_esp31b_i2s.c:35:42: note: in definition of macro 'ETS_SLC_INTR_ATTACH'

   xt_set_interrupt_handler(ETS_SLC_INUM, fn, arg); \

                                          ^

In file included from C:\Program Files (x86)\Arduino\hardware\Espressif\ESP31B\cores\esp31b\Arduino.h:28:0,

                 from C:\Program Files (x86)\Arduino\hardware\Espressif\ESP31B\cores\esp31b\core_esp31b_i2s.c:23:

C:\Program Files (x86)\Arduino\hardware\Espressif\ESP31B/tools/sdk/include/freertos/xtensa_api.h:71:19: note: expected 'xt_handler {aka void (*)(void *)}' but argument is of type 'void (*)(void)'

 extern xt_handler xt_set_interrupt_handler(int n, xt_handler f, void * arg);

                   ^

C:\Program Files (x86)\Arduino\hardware\Espressif\ESP31B\cores\esp31b\core_esp31b_noniso.c: In function 'dtostrf':

C:\Program Files (x86)\Arduino\hardware\Espressif\ESP31B\cores\esp31b\core_esp31b_noniso.c:180:9: internal compiler error: Segmentation fault

         rounding *= 10.0;     

         ^

libbacktrace could not find executable to open

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/*
  Blink
  Turns on an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the Uno and
  Leonardo, it is attached to digital pin 13. If you're unsure what
  pin the on-board LED is connected to on your Arduino model, check
  the documentation at http://www.arduino.cc

  This example code is in the public domain.

  modified 8 May 2014
  by Scott Fitzgerald
  
  modified 08 Jan 2016
  by rudi - esp31b pin 22
  
 */


// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin 13 as an output.
  // modified for test with esp31b
  pinMode(22, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(22, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);              // wait for a second
  digitalWrite(22, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);              // wait for a second
}

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..
uint8 temper;  // result in fahrenheit
float celsius;    // conversion in Celsius later

celsius = ( temper -  32 ) / 1.8 ;
..