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new to esp32

Posted: Tue Aug 20, 2024 10:07 pm
by 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.

Re: new to esp32

Posted: Wed Aug 21, 2024 2:44 am
by 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.)

Re: new to esp32

Posted: Wed Aug 21, 2024 2:10 pm
by donreypirata
thank you, I didn't know that, any instruction on how to do that?

Re: new to esp32

Posted: Thu Aug 22, 2024 12:49 am
by ESP_Sprite
Depends on the SDK. Which one are you using?

Re: new to esp32

Posted: Thu Aug 22, 2024 11:45 am
by 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: ...'''
WhatsApp Image 2024-08-21 at 2.14.12 PM.jpeg
Error image
WhatsApp Image 2024-08-21 at 2.14.12 PM.jpeg (63.14 KiB) Viewed 1613 times

Re: new to esp32

Posted: Thu Aug 22, 2024 4:08 pm
by donreypirata
im using the Arduino ide to program the boards

Re: new to esp32

Posted: Thu Aug 22, 2024 11:53 pm
by ESP_Sprite
charansai wrote:
Thu Aug 22, 2024 11:45 am
Please post that in a separate topic.
donreypirata wrote: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.

Re: new to esp32

Posted: Fri Aug 23, 2024 10:31 pm
by donreypirata
great, thank you very much, I will try it this weekend, really appreciate your help