ESP32 xQueue, how to copy struct (memory) efficiently ?

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2

if the len varies, probably better to change block to a pointer..
the sender will need to malloc(len) and the receiver should free the pointer..

#define BLOCK_SIZE 512
#define SD_QUEUE_SIZE 16 // maybe only 8

typedef struct {
  uint16_t len;
  uint8_t* block;
} SdBlock;

  QueueHandle_t SdQ;
  QueueHandle_t SdFileName;
  QueueHandle_t SdError;

void setup() {
  Serial.begin(500000);
  SdQ = xQueueCreate(SD_QUEUE_SIZE, sizeof(SdBlock));
 
  if(SdQ == NULL){
    Serial.println("Error creating the queue");
  }
}

void loop() { 

}


void SendToTask(uint8_t* buf, uint16_t len) {
  SdBlock qBlock;
  qBlock.block = (uint8_t*)malloc(len);
  memcpy (qBlock.block, buf, len);
  qBlock.len = len;
  xQueueSend(SdQ, &qBlock, portMAX_DELAY);
}

good luck.. ~q