new to esp32

[donreypirata]

Hi, I'm new to esp32, I got the esp32 s-3 devout c-1 board and the esp32-c3 devout m1, but I can't identify which are the i2c pins in the s-3, in the c3 are clearly identified in the documentation, all help will be appreciated.

[ESP_Sprite]

ESP32 chips don't have dedicated pins for that; you can select any of them to be used for I2C. (Note that some SDKs, like Arduino, do use default pins if you don't specify any, but that's an SDK thing, not something that is enforced in hardware.)

[donreypirata]

thank you, I didn't know that, any instruction on how to do that?

[ESP_Sprite]

Depends on the SDK. Which one are you using?

[charansai]

hii i am getting this error while compiling can anyone can help me...

Code: Select all

else if(subMenuPage==2){
      lcd.setCursor(0,0);lcd.print("CHARGING CURRENT");
      if(setMenuPage==1){lcd.setCursor(0,1);lcd.print(" >");}
      else{lcd.setCursor(0,1);lcd.print("= ");}
      lcd.setCursor(2,1);lcd.print(currentCharging,2);lcd.print("A");  
      lcd.print("                ");  

      //SET MENU - FLOATTYPE
      if(setMenuPage==0){floatTemp = currentCharging;}
      else{
        if(digitalRead(buttonBack)==1){while(digitalRead(buttonBack)==1){}currentCharging = floatTemp;setMenuPage=0;} 
        if(digitalRead(buttonSelect)==1){while(digitalRead(buttonSelect)==1){}saveSettings();setMenuPage=0;}     
        currentMenuSetMillis = millis();
        if(digitalRead(buttonRight)==1){                                                  //Right button press (increments setting values)
          while(digitalRead(buttonRight)==1){
            if(millis()-currentMenuSetMillis>longPressTime){                              //Long Press     
              currentCharging += 1.00;                                                    //Increment by 1
              currentCharging = constrain(currentCharging,0.0,cOutSystemMax);             //Limit settings values to a range
              lcd.setCursor(2,1);lcd.print(currentCharging,2);delay(longPressInterval);   //Display settings data                               
            }
            else{                                                                         //Short Press  
              currentCharging += 0.01;                                                    //Increment by 0.01
              currentCharging = constrain(currentCharging,0.0,cOutSystemMax);             //Limit settings values to a range
              lcd.setCursor(2,1);lcd.print(currentCharging,2);delay(shortPressInterval);  //Display settings data                            
            }  
            lcd.print("A   ");                                                            //Display unit
          } 
        }
        else if(digitalRead(buttonLeft)==1){                                              //Left button press (decrements setting values)
          while(digitalRead(buttonLeft)==1){
            if(millis()-currentMenuSetMillis>longPressTime){                              //Long Press     
              currentCharging -= 1.00;                                                    //Increment by 1
              currentCharging = constrain(currentCharging,0.0,cOutSystemMax);             //Limit settings values to a range
              lcd.setCursor(2,1);lcd.print(currentCharging,2);delay(longPressInterval);   //Display settings data                               
            }
            else{                                                                         //Short Press  
              currentCharging -= 0.01;                                                    //Increment by 0.01
              currentCharging =  constrain(currentCharging,0.0,cOutSystemMax);            //Limit settings values to a range
              lcd.setCursor(2,1);lcd.print(currentCharging,2);delay(shortPressInterval);  //Display settings data                                      
            } 
            lcd.print("A   ");                                                            //Display unit
          } 
        }
      } 
    }

Error: ...8_LCD_Menu:377:1: error: insn does not satisfy its constraints:
377 | }
| ^
(insn 11 2651 1185 127 (set (reg:SF 19 f0 [orig:127 _95 ] [127])
(mem/u/c:SF (symbol_ref/u:SI ("*.LC357") [flags 0x2]) [0 S4 A32])) "C:\Users\chara\Downloads\CODE_MPPT_ESP32_V1.2.1-20240819T055256Z-001\CODE_MPPT_ESP32_V1.2.1\8_LCD_Menu.ino":205:33 49 {movsf_internal}
(expr_list:REG_EQUAL (const_double:SF 0.0 [0x0.0p+0])
(nil)))
during RTL pass: postreload
C:\Users\chara\Downloads\CODE_MPPT_ESP32_V1.2.1-20240819T055256Z-001\CODE_MPPT_ESP32_V1.2.1\8_LCD_Menu.ino:377:1: internal compiler error: in extract_constrain_insn, at recog.cc:2692
Please submit a full bug report, with preprocessed source (by using -freport-bug).
See <https://gcc.gnu.org/bugs/> for instructions.
exit status 1
insn does not satisfy its constraints: ...'''

Error image

WhatsApp Image 2024-08-21 at 2.14.12 PM.jpeg (63.14 KiB) Viewed 1565 times

[donreypirata]

im using the Arduino ide to program the boards

[ESP_Sprite]

Please post that in a separate topic.

im using the Arduino ide to program the boards

You can set the GPIOs when initializing the TwoWire object. For e.g.GPIO 12 and 13, you would do something like

Code: Select all

TwoWire I2Cbus = TwoWire(0);
I2Cbus.begin(12, 13, 100000); 

See here for some more examples.

[donreypirata]

great, thank you very much, I will try it this weekend, really appreciate your help