/*
 * Command.cpp
 *
 *  Created on: Jul 8, 2021
 *      Author: Andreas Berthoud
 */
#include <queue>

#include "Command.hpp"
#include "string.h"
#include "usbd_cdc_if.h"

Command::Command(CommandId id) : id(id) {
  this->data[0] = id;
  this->data[3] = 0x00; // reserved
  this->payload_ptr = this->data + 4;
 }

void Command::send() {
  uint16_t size = this->payload_length + 5;
  this->data[size-1] = 0xff;
  CDC_Transmit_FS(this->data, size);
}

void Command::set_payload_length(uint16_t payload_length) {
  this->payload_length = payload_length;
  data[1] = (payload_length & 0xFF00) >> 8;
  data[2] = payload_length & 0x00FF;
}

std::queue<Command> command_queue;

void push_command(const Command &command) {
  command_queue.push(command);
}

void pop_and_execute_commands() {
  while (!command_queue.empty()) {
    Command command = command_queue.front();
    command.send();
    command_queue.pop();
  }
}