Serialx need to be more generic and flexible #113

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1. fpistm

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   question ❓Usually converted as a discussionUsually converted as a discussion

   on Sep 26, 2017
2. fpistm commented on Sep 26, 2017

   

   fpistm

   on Sep 26, 2017

   Last edited by fpistm

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   Hi @mahesh2000,

   I think you talk about:
   https://github.com/stm32duino/Arduino_Core_STM32L4/blob/d30e65eed475fcdcafb9ce26e74be1055af860a5/variants/STM32L476RG_Nucleo/variant.cpp#L145

   It is not really broken. Serial3 (map to UART4) is only not defined by default in this core.
   For the PeriperalPins.c this is correct. You can use one or the other pin to the Serial connection.
   Ex:

   HardwareSerial Serial3(PA_1, PA_0);
   HardwareSerial Serial3(PC_11, PA_0);
   HardwareSerial Serial3(PA_1, PC_10);
   HardwareSerial Serial3(PC_11, PC_10);
   

   It's up to you to connect the serial interface on the right pins.

   Howerver, I think you raised one issue:
   How to define an extra Serial and process it to the SerialEventRun() and define the related serialEventx();
3. fpistm

   self-assigned this

   on Sep 27, 2017
4. fpistm

   added

   enhancementNew feature or requestNew feature or request

   on Sep 27, 2017
5. fpistm

   changed the title [-]Serial3 broken, fix created[/-] [+]Serialx need to be more generic and flexible[/+] on Sep 27, 2017
6. fpistm

   added this to the Next release milestone on Sep 27, 2017
7. fpistm

   closed this as completedin #122on Oct 6, 2017
8. mahesh2000 commented on Oct 6, 2017

   

   mahesh2000

   on Oct 6, 2017

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   hi, afaik, hardware serial ports numbers on the STM32L476 Nucleo-64 are specified to certain pins -- it would make sense to have the same nomenclature in the variant.cpp rather than let the user define his/her own. What do you think?
9. fpistm commented on Oct 6, 2017

   

   fpistm

   on Oct 6, 2017

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   Hi, in fact since #122 is merged, there is no more need to define HardwareSerial in the variant.cpp.
   Serial are now handle more generically.
   User could (re)define them from the sketch depending of his need (even the SerialEvent)
   If you want Serial3 enable the 'First third option in the Serial instance menu, this will enable the Serial 3.
10. fpistm commented on Oct 6, 2017

    

    fpistm

    on Oct 6, 2017

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    By default, when Serial 3 is enabled on Nucleo L476RG pins will be PB10(Tx) PB11(Rx).
    To change them call in the sketch:

      Serial.setRx(PC5);
      Serial.setTx(PC4);
    

    before the Serial3.begin(9600)