Separeted commands

Projects Programming
1

hi guys, when i was working on ST7789 output, i notice commands using substring isnt that good, ex:"cmd 000 000 000 000", is somewone know a way to make better command system that works like (cmd 0,0,0,0)

2

If all you mean is to replace spaces as delimiters with commas, I ask why?

What was the problem with the code that you tried where spaces were expected in between?

a7

3

it seems to i cant find something like this. the code is use on command with 000s part is just regular string.substring's

4

I don't know if you mean a TFT LCD display. Your question is not in any context.

Perhaps this article will be of interest:

It gets into how to send multiple pieces of data separated by. Whatever.

a7

5

OHHHH I GOT IT, THERE WAS SPLIT THAT ON VB .NET, but i cant find on the arduino.cc

6

here is how I split a comma delimited string.

void fParseLIDAR_ReceivedSerial ( void * parameters )
{
  // distribute received LIDAR info
  String sTmp = "";
  sTmp.reserve ( 20 );
  String sMessage = "";
  sMessage.reserve ( StringBufferSize300 );
  for ( ;; )
  {
    EventBits_t xbit = xEventGroupWaitBits (eg, evtParseLIDAR_ReceivedSerial, pdTRUE, pdTRUE, portMAX_DELAY) ;
    xQueueReceive ( xQ_LIDAR_Display_INFO, &sMessage, QueueReceiveDelayTime );
    //        Serial.println ( sMessage );
    int commaIndex = sMessage.indexOf(',');
    sTmp.concat ( sMessage.substring(0, commaIndex) );
    sMessage.remove( 0, (commaIndex + 1) ); // chop off begining of message
    //    Serial.println ( sTmp );
    if ( sTmp == "!" )
    {
      xSemaphoreGive ( sema_LIDAR_OK );
      //  Display info from LIDAR
      sLIDAR_Display_Info = sMessage;
    }
    if ( sTmp == "$" )
    {
      xEventGroupSetBits( eg1, evtResetWatchDogVariables );
    }
    if ( sTmp == "#")
    {
      // Serial.println ( "#" );
      xSemaphoreTake( sema_LIDAR_Alarm, xSemaphoreTicksToWait );
      sLIDAR_Alarm_info = sMessage;
      xSemaphoreGive( sema_LIDAR_Alarm );
      xEventGroupSetBits( eg, evtfLIDAR_Alarm );
    }
    //    Serial.println ( "parse serial ok" );
    sTmp = "";
    sMessage = "";
    xSemaphoreGive( sema_ParseLIDAR_ReceivedSerial );
    //    Serial.print( "fParseReceivedSerial " );
    //    Serial.print(uxTaskGetStackHighWaterMark( NULL ));
    //    Serial.println();
    //    Serial.flush();
  }
  vTaskDelete( NULL );
} // void fParseReceivedSerial ( void * parameters )
7

is it saving them on an array of strings

8

No.

9

so how im gonna get "all" of those string's

10

you can write code to save them to an array?

In the case for the code posted in post#6 I receive the String on Serial like this.

void fReceiveSerial_LIDAR( void * parameters  )
{
  char OneChar;
  char *str;
  str = (char *)ps_calloc(300, sizeof(char) ); // put str buffer into PSRAM
  bool BeginSentence = false;
  sSerial.reserve ( StringBufferSize300 );
  for ( ;; )
  {
    EventBits_t xbit = xEventGroupWaitBits (eg, evtReceiveSerial_LIDAR, pdTRUE, pdTRUE, portMAX_DELAY);
    if ( LIDARSerial.available() >= 1 )
    {
      while ( LIDARSerial.available() )
      {
        OneChar = LIDARSerial.read();
        if ( BeginSentence )
        {
          if ( OneChar == ‘>’)
          {
            if ( xSemaphoreTake( sema_ParseLIDAR_ReceivedSerial, xSemaphoreTicksToWait10 ) == pdTRUE )
            {
              xQueueOverwrite( xQ_LIDAR_Display_INFO, ( void * ) &sSerial );
              xEventGroupSetBits( eg, evtParseLIDAR_ReceivedSerial );
              //
            }
            BeginSentence = false;
            break;
          }
          sSerial.concat ( OneChar );
        }
        else
        {
          if ( OneChar == ‘<’ )
          {
            sSerial = “”; // clear string buffer
            BeginSentence = true; // found begining of sentence
          }
        }
      } //  while ( LIDARSerial.available() )
    } //if ( LIDARSerial.available() >= 1 )
    xSemaphoreGive( sema_ReceiveSerial_LIDAR );
  }
  vTaskDelete( NULL );
} //void fReceiveSerial_LIDAR( void * parameters  )

After receipt of a complete String, the String is sent over to the parser xQueueOverwrite( xQ_LIDAR_Display_INFO, ( void * ) &sSerial ); where the parser receives the String with xQueueReceive ( xQ_LIDAR_Display_INFO, &sMessage, QueueReceiveDelayTime );

11

i found the code just i needed on forum in How to split a string with space and store the items in array?

12

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