/******************************************************************************
 * Nome do Arquivo 	: main.c
 *
 * Descrição       	: Arquivo principal aula 4, exemplo 3
 *
 * Ambiente			    : WOKWI e RP2040 C/C++ SDK
 *
 * Responsável		  : Weslley M. Torres
 *
 * Versão/Data		  : 1.0.0 - 10/03/2024 - Initial version 
 *
 *****************************************************************************/

/******************************************************************************
* HEADER-FILES (Somente os arquivos necessários nesse arquivo)
******************************************************************************/
#include <stdio.h>
#include "pico/stdlib.h"
#include "display_lcd.h"
#include "hardware/timer.h"

/*****************************************************************************/

/******************************************************************************
* Variaveis Globais
******************************************************************************/

#define OUT_H 1
#define OUT_L 0

#define OUT 1
#define IN 0
#define DELAY 50000
#define ALARM_NUM 0
#define ALARM_IRQ timer_hardware_alarm_get_irq_num(timer_hw, ALARM_NUM)

uint8_t nome_ra= 1;
uint8_t trava=1;
uint8_t contagem=0;

/*****************************************************************************/
/******************************************************************************
* Prototipos das funções
******************************************************************************/
void system_init(void);

void alarm_irq(void);
 
 /*****************************************************************************/

/******************************************************************************
 * Funcao:		int main(void)
 * Entrada:		Nenhuma (void)
 * Saída:		Nenhuma (void)
 * Descrição:	Função principal
 *****************************************************************************/
void main(void) 
{
 
  uint8_t nome_1[17] = "Carlos E. S.    ";
  uint8_t nome_2[17] = "Carlos H. C. O. ";
  uint8_t nome_3[17] = "Guilherme Akaki ";
  uint8_t nome_4[17] = "Julio Cesar     ";
  uint8_t nome_5[17] = "Nathan S. Soares";
  uint8_t ra_1[17] = "1600732313022";
  uint8_t ra_2[17] = "1600732213005";
  uint8_t ra_3[17] = "1600732321042";
  uint8_t ra_4[17] = "1600732311020";
  uint8_t ra_5[17] = "1600732411020";

  stdio_init_all();
  system_init();
  
  while(true){
  if((trava))
  {
  LIMPA_DISPLAY();  
  if(nome_ra==1)
  {
  posicao_cursor_lcd(1,0);
  escreve_frase_ram_lcd(nome_1);
  posicao_cursor_lcd(2,0);
  escreve_frase_ram_lcd(ra_1);
  }
  else if(nome_ra==2)
  {
  posicao_cursor_lcd(1,0);
  escreve_frase_ram_lcd(nome_2);
  posicao_cursor_lcd(2,0);
  escreve_frase_ram_lcd(ra_2);
  }
  
  else if(nome_ra==3)
  {
  posicao_cursor_lcd(1,0);
  escreve_frase_ram_lcd(nome_3);
  posicao_cursor_lcd(2,0);
  escreve_frase_ram_lcd(ra_3);

  }
  
 else if(nome_ra==4)
 {
  posicao_cursor_lcd(1,0);
  escreve_frase_ram_lcd(nome_4);
  posicao_cursor_lcd(2,0);
  escreve_frase_ram_lcd(ra_4);
 }
 else if(nome_ra==5)
 {
  posicao_cursor_lcd(1,0);
  escreve_frase_ram_lcd(nome_5);
  posicao_cursor_lcd(2,0);
  escreve_frase_ram_lcd(ra_5);
  nome_ra=0;
 }
  trava=0;
  nome_ra++;
  DesligaCursor();
  }
  sleep_ms(1000);
  }
  

}

/******************************************************************************
 * Funcao:		void system_init(void)
 * Entrada:		Nenhuma (void)
 * Saída:		Nenhuma (void)
 * Descrição:	Inicializa sistema (microcontrolador e periféricos)
 *****************************************************************************/
void system_init(void)
{
  init_lcd();

 hw_set_bits(&timer_hw->inte, 1u << ALARM_NUM);

 irq_set_exclusive_handler(ALARM_IRQ, alarm_irq);

 uint64_t target = timer_hw->timerawl + DELAY;

 timer_hw->alarm[ALARM_NUM] = (uint32_t) target;

 irq_set_enabled(ALARM_IRQ, true);
}

void alarm_irq(void) 
{
   hw_clear_bits(&timer_hw->intr, 1u << ALARM_NUM);

   uint64_t target = timer_hw->timerawl + DELAY;

   timer_hw->alarm[ALARM_NUM] = (uint32_t) target;

   contagem++;
   if(contagem==60)
   {
    trava=1;
    contagem=0;
   }
}