/*
 * Notification.cpp
 *
 *  Created on: Jul 14, 2021
 *      Author: Andreas Berthoud
 */

#include "usbd_cdc_if.h"
#include "Notification.hpp"

Notification::Notification() {
  this->payload_ptr = this->data +4;
}

bool Notification::execute() {
  uint16_t size = NOTIFICATION_COMMAND_TOTAL_OVERHEAD + this->payload_size;

  this->data[0] = (uint8_t)this->get_command_id();
  this->data[1] = (this->payload_size & 0xFF00) >> 8;
  this->data[2] = this->payload_size & 0x00FF;
  this->data[3] = 0x00; // reserved
  this->data[size-1] = 0xff;  // set stop byte

  uint8_t result = CDC_Transmit_FS(this->data, size);
  return result == USBD_OK || result == USBD_BUSY;
}

uint16_t Notification::get_payload_size() {
  return this->payload_size;
}

void Notification::add_to_payload_size(uint16_t size) {
  this->payload_size += size; 
}